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Search for "electrodes" in Full Text gives 601 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Influence of conductive carbon and MnCo2O4 on morphological and electrical properties of hydrogels for electrochemical energy conversion

  • Sylwia Pawłowska,
  • Karolina Cysewska,
  • Yasamin Ziai,
  • Jakub Karczewski,
  • Piotr Jasiński and
  • Sebastian Molin

Beilstein J. Nanotechnol. 2024, 15, 57–70, doi:10.3762/bjnano.15.6

Graphical Abstract
  • hydrogel structure. The changes are within the range of 79.7–1390.5 kΩ at 0.01 Hz and 3.5–18.6 kΩ at 1 Hz. The trend of the electrochemical impedance spectroscopy (EIS) results shows the capacitive-dominant nature of the hydrogel for all analysed hydrogel-based electrodes. Three different regions were
  • , 9.26 mF/cm2, and 4.38 mF/cm2, respectively, for , , and electrodes [56], but with four times higher catalyst loading. The catalytic kinetics of the hydrogel samples showed a much lower Tafel slope value for pure hydrogel (141 mV/dec) than those obtained for the hydrogel with catalyst and conductive
  • . Table 2 compares the results obtained for the hydrogel samples investigated by us with the data of hydrogel-based electrodes obtained by other scientific groups. Comparing the overpotential values obtained by us and data obtained by other groups for hydrogel electrodes with various types of
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Published 11 Jan 2024

Josephson dynamics and Shapiro steps at high transmissions: current bias regime

  • Artem V. Galaktionov and
  • Andrei D. Zaikin

Beilstein J. Nanotechnol. 2024, 15, 51–56, doi:10.3762/bjnano.15.5

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  • ) electrodes is kept much shorter than the superconducting coherence length, that is, d ≪ ξ0 ∼ vF/Δ. Here, Δ is the absolute value of the order parameter in superconducting electrodes and vF denotes the Fermi velocity. For simplicity here and below, we set the Planck and Boltzmann constants equal to unity (ℏ
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Published 11 Jan 2024

Spatial variations of conductivity of self-assembled monolayers of dodecanethiol on Au/mica and Au/Si substrates

  • Julian Skolaut,
  • Jędrzej Tepper,
  • Federica Galli,
  • Wulf Wulfhekel and
  • Jan M. van Ruitenbeek

Beilstein J. Nanotechnol. 2023, 14, 1169–1177, doi:10.3762/bjnano.14.97

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  • ][3] has always held a central role, as the flexibility and control over the structure of molecules is unmatched. One of the fundamental parts of devices employing a bottom-up approach combined with molecular electronics is comprised of metal electrodes and molecular layers deposited onto them. For
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Published 05 Dec 2023

A multi-resistance wide-range calibration sample for conductive probe atomic force microscopy measurements

  • François Piquemal,
  • Khaled Kaja,
  • Pascal Chrétien,
  • José Morán-Meza,
  • Frédéric Houzé,
  • Christian Ulysse and
  • Abdelmounaim Harouri

Beilstein J. Nanotechnol. 2023, 14, 1141–1148, doi:10.3762/bjnano.14.94

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  • voltage between −1 V and +1 V. This approach mitigates the difficulties related to surface contamination on the gold electrodes during scanning. Resistance values for each electrode arm were determined from the slopes of the I–V straights using a regression model. For each value, the coefficient of
  • effect is currently under thorough investigations for a future publication. Accordingly, a new set of images was acquired for the electrodes i = 3 to i = 15 at two bias voltages of +1 V and −1 V, and the corresponding resistance value was determined by their mean value. For each electrode, this imaging
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Published 22 Nov 2023

Spatial mapping of photovoltage and light-induced displacement of on-chip coupled piezo/photodiodes by Kelvin probe force microscopy under modulated illumination

  • Zeinab Eftekhari,
  • Nasim Rezaei,
  • Hidde Stokkel,
  • Jian-Yao Zheng,
  • Andrea Cerreta,
  • Ilka Hermes,
  • Minh Nguyen,
  • Guus Rijnders and
  • Rebecca Saive

Beilstein J. Nanotechnol. 2023, 14, 1059–1067, doi:10.3762/bjnano.14.87

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  • zirconate titanate (PZT), was integrated onto a silicon photodiode. The PZT layer was sandwiched between two lanthanum nickelate (LNO) electrodes and ultimately the backside of the silicon substate was etched to enhance the motion of the membrane. More detailed information on the fabrication and cross
  • with a diluted BHF:HNO3:H2O solution and a HCl solution, respectively. To avoid shunting of the device, a SiO2 insulating layer was deposited. Patterned aluminum (Al) contacts which connect to the top and bottom electrodes of the PBZT were fabricated through a lift-off process. The fabrication was
  • waveform voltage at an adjustable frequency, operated through a function generator (GWInstek, SFG-1013). Here, the selected modulation frequency was 1 Hz. It should be noted that the active area of the device stack of piezoelectric layer (PZT) and LNO electrodes is transparent and thus the incoming light
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Published 06 Nov 2023

A visible-light photodetector based on heterojunctions between CuO nanoparticles and ZnO nanorods

  • Doan Nhat Giang,
  • Nhat Minh Nguyen,
  • Duc Anh Ngo,
  • Thanh Trang Tran,
  • Le Thai Duy,
  • Cong Khanh Tran,
  • Thi Thanh Van Tran,
  • Phan Phuong Ha La and
  • Vinh Quang Dang

Beilstein J. Nanotechnol. 2023, 14, 1018–1027, doi:10.3762/bjnano.14.84

Graphical Abstract
  • relations under reverse and bias voltages, indicating a good ohmic contact between semiconductor materials and Ag electrodes [42]. It is worth noting that the current rise corresponds to the light intensity increase. The highest photocurrent reached 18 μA under a light illumination of 1.28 mW·cm−2. The low
  • , increasing the visible-light intensity promotes more excited electrons in the conduction band (CB) of CuO NPs. These electrons transfer to the CB of ZnO NRs and increase the photocurrent collected by the Ag electrodes. Response time and recovery are essential when evaluating a photodetector’s performance
  • the Ag electrodes and generate the photocurrent, while holes accumulate near the surface of ZnO NRs to desorb ionized oxygen and release gaseous oxygen: Conclusion In this report, a visible-light photodetector based on CuO NPs/ZnO NRs was fabricated by simple and time-saving methods. Spherical CuO
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Published 13 Oct 2023

Ni, Co, Zn, and Cu metal-organic framework-based nanomaterials for electrochemical reduction of CO2: A review

  • Ha Huu Do and
  • Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 904–911, doi:10.3762/bjnano.14.74

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  • converting individual MOFs into MOF-derived carbon-support nanomaterials. Another issue is the durability of the working electrodes. Many studies have employed drop casting and the use of binders to affix MOFs onto the substrate for electrode fabrication. This approach presents drawbacks such as reduced
  • accessibility to active sites and unstable MOFs/substrate interfaces. Therefore, further studies are required to develop binder-free electrodes by in situ synthesis of MOFs on conductive substrates, such as nickel foam, copper foil, and carbon cloth, to overcome the aforementioned limitations and advancing the
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Published 31 Aug 2023

A wearable nanoscale heart sound sensor based on P(VDF-TrFE)/ZnO/GR and its application in cardiac disease detection

  • Yi Luo,
  • Jian Liu,
  • Jiachang Zhang,
  • Yu Xiao,
  • Ying Wu and
  • Zhidong Zhao

Beilstein J. Nanotechnol. 2023, 14, 819–833, doi:10.3762/bjnano.14.67

Graphical Abstract
  • signal, which is then amplified by the power amplifier and delivered to the speaker to convert the electrical signal into an acoustic signal. A flexible nanoscale heart sound sensor is placed 1 cm above the speaker, and its electrodes are connected to the charge amplifier and then to the oscilloscope
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Published 31 Jul 2023

In situ magnesiothermic reduction synthesis of a Ge@C composite for high-performance lithium-ion batterie anodes

  • Ha Tran Huu,
  • Ngoc Phi Nguyen,
  • Vuong Hoang Ngo,
  • Huy Hoang Luc,
  • Minh Kha Le,
  • Minh Thu Nguyen,
  • My Loan Phung Le,
  • Hye Rim Kim,
  • In Young Kim,
  • Sung Jin Kim,
  • Van Man Tran and
  • Vien Vo

Beilstein J. Nanotechnol. 2023, 14, 751–761, doi:10.3762/bjnano.14.62

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  • , is a possible alternative for graphite electrodes due to its high theoretical capacity of 1623 mAh·g−1 (four times higher than that of graphite) and good rate performance due to high electronic (2.1 S·m−1, 1 × 104 times higher than that of silicon) and ionic (6.51 × 10−12 cm2·s−1, 400 times higher
  • than Si at room temperature) conductivity [14]. However, electrodes based on alloying suffer from deterioration during repeated lithiation/delithiation because of the large variation in volume. Despite the lower volume change ratio compared to Si (370% for Ge and 400% for Si) and the structural
  • nanoparticles and a carbon matrix using a hydrothermal route has been reported, and the enhancement in the electrochemical performance of Ge@C electrodes was demonstrated [33]. In this work, a one-pot synthesis route has been followed to prepare a Ge@C composite using an in situ magnesiothermic reduction of
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Published 26 Jun 2023

A graphene quantum dots–glassy carbon electrode-based electrochemical sensor for monitoring malathion

  • Sanju Tanwar,
  • Aditi Sharma and
  • Dhirendra Mathur

Beilstein J. Nanotechnol. 2023, 14, 701–710, doi:10.3762/bjnano.14.56

Graphical Abstract
  • /reduction behavior and charge transfer resistance, cyclic voltammetry and electrochemical impedance spectroscopy were performed. An investigation of the relationship between concentrations and peak currents was conducted using differential pulse voltammetry (DPV). In this study, the modified GQD electrodes
  • GCE and GQDs/GCE electrodes was first evaluated using cyclic voltammetry in 0.1 M KCl containing 0.05 M [Fe(CN)6]3−/4− at a scan rate of 100 mV·s−1, as shown in Figure 7a. The bare GCE exhibits well-defined anodic and cathodic redox peaks at 1.45 and 0.16 V, respectively. In the cathodic direction
  • quantitation (LOQ) of 2.06 nM was calculated using a k value of 10. A comparison of the GQDs/GCE electrode with other existing electrodes for malathion detection is presented in Table 1. It indicates that the proposed GQDs-based electrode has a lower detection limit than other electrodes. The modified GQDs/GCE
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Published 09 Jun 2023

Humidity-dependent electrical performance of CuO nanowire networks studied by electrochemical impedance spectroscopy

  • Jelena Kosmaca,
  • Juris Katkevics,
  • Jana Andzane,
  • Raitis Sondors,
  • Liga Jasulaneca,
  • Raimonds Meija,
  • Kiryl Niherysh,
  • Yelyzaveta Rublova and
  • Donats Erts

Beilstein J. Nanotechnol. 2023, 14, 683–691, doi:10.3762/bjnano.14.54

Graphical Abstract
  • , which was explained by water chemisorption on the nanowire surface [6][13][18][19]. Nevertheless, for single nanowires assembled on electrodes by dielectrophoresis (DEP), the opposite response to humidity was observed [21]. Besides, unusual responses to humidity were shown for nanowires of other
  • the gap (Figure 1d); however, the electrical signal was assumed to come from the CuO nanowire bundles interconnecting the electrodes. Examples of impedance spectra of the CuO networks interconnecting the metal electrodes are shown in Figure 2. Figure 2a shows Nyquist plots measured for variable
  • −12, and “pseudo chi imaginary” was less than 1.0 × 10−10, meaning that these spectra are valid for further analysis [36]. The EIS model of the whole tested sample consisted of 152 electrochemical cells, formed by nanowires interconnecting a pair of electrodes, connected in a parallel circuit. Using
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Published 05 Jun 2023

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

  • Akeem Adeyemi Oladipo,
  • Saba Derakhshan Oskouei and
  • Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

Graphical Abstract
  • then measure the resulting current [61]. In voltammetric sensors that typically have two or three electrodes (the working electrode, the counter electrode, and the reference electrode), the current is measured as a function of the applied voltage at the working electrode. Currently, cyclic voltammetry
  • nanocomposites. Because of their large surface area, ordered structure, tunable physico-chemical properties, and good absorbability, MOFs exhibit high potential among the various materials used for electrochemical sensor electrodes [63]. Strong interactions between the functional groups of MOFs and the target
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Published 01 Jun 2023

Evaluation of electrosynthesized reduced graphene oxide–Ni/Fe/Co-based (oxy)hydroxide catalysts towards the oxygen evolution reaction

  • Karolina Cysewska,
  • Marcin Łapiński,
  • Marcin Zając,
  • Jakub Karczewski,
  • Piotr Jasiński and
  • Sebastian Molin

Beilstein J. Nanotechnol. 2023, 14, 420–433, doi:10.3762/bjnano.14.34

Graphical Abstract
  • influence of the addition of GO to NiFe and CoNiFe oxides/(oxy)hydroxides catalysts towards the OER was studied. NiFe, CoNiFe, NiFe-GO, and CoNiFe-GO were synthesized by electrodeposition directly on nickel foam. The process made it possible to fabricate OER electrodes with reduced GO and without any
  • plate-like structure remained for NiFe and CoNiFe catalysts. However, in each case, some material agglomeration occurred randomly on the surface of the electrodes. No detachment of the catalyst from the surface of the nickel foam was observed. Discussion The studies showed that the addition of GO to
  • , the substrates were cleaned ultrasonically in distilled water (5 min) and acetone (5 min). The reference and counter electrodes were Ag/AgCl (4 M KCl) and platinum mesh, respectively. Distilled water was used for the solutions. The measurement temperature was controlled by a thermostat (Julabo F12
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Published 29 Mar 2023

A novel approach to pulsed laser deposition of platinum catalyst on carbon particles for use in polymer electrolyte membrane fuel cells

  • Bogusław Budner,
  • Wojciech Tokarz,
  • Sławomir Dyjak,
  • Andrzej Czerwiński,
  • Bartosz Bartosewicz and
  • Bartłomiej Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 190–204, doi:10.3762/bjnano.14.19

Graphical Abstract
  • support Platinum was deposited on the synthesized carbon material C-11 and Vulcan XC-72R, one of the most popular materials used as catalyst support in the anode and cathode electrodes of PEMFCs. The platinum deposition was performed in vacuum at a pressure of around (4.6 ± 0.8) × 10−5 mbar. The PLD
  • properties of the investigated catalysts. The number of electrons obtained in the oxygen reduction reaction (the number of electrons per O2 molecule) on electrodes made of the tested catalytic materials, and the resulting amount of hydrogen peroxide produced were determined based on polarization curves
  • . The durability of fabricated catalysts in RRDE tests is, after all, proportional to the amount of deposited platinum. Efficiency of manufactured catalysts in a fuel cell system Fabricated materials A, B, C, and D were used to make electrodes to investigate the efficiency of the fabricated Pt-based
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Published 02 Feb 2023

A distributed active patch antenna model of a Josephson oscillator

  • Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2023, 14, 151–164, doi:10.3762/bjnano.14.16

Graphical Abstract
  • and the flux-flow phenomenon. (iii) The slow propagation speed of EMWs inside the JJ, c0 ≪ c. This is caused by a large kinetic inductance of superconducting electrodes. For Nb-based JJs, c/c0 ≈ 40 (see the estimation in section Discussion). For atomic-scale intrinsic JJs in layered cuprates, c0 can
  • mode, the argument of J0 becomes (c0/c)πnsinΘ. Since c0 ≪ c, k0a is small. Expanding in Equation 6, J0(x) ≃ 1 − x2/4 (for x ≪ 1), we obtain: It is seen that the mutual conductance for a JJ with thin electrodes (slow c0) is not negligible and can be as big as the single-slot conductance G1, Equation 5
  • radiative losses to free space, characterized by the radiative resistance Rrad. They are connected by the transmission line impedance, Here Zsurf is the surface impedance of the electrodes, GQP = 1/RQP is the quasiparticle conductance, L is the inductance, and C is the capacitance of the JJ. The bars
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Published 26 Jan 2023

Cooper pair splitting controlled by a temperature gradient

  • Dmitry S. Golubev and
  • Andrei D. Zaikin

Beilstein J. Nanotechnol. 2023, 14, 61–67, doi:10.3762/bjnano.14.7

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  • Moscow, Russia 10.3762/bjnano.14.7 Abstract Electrons in two different normal metallic electrodes attached to a sufficiently thin superconducting island may become entangled due to the effect of Cooper pair splitting. This phenomenon is of fundamental importance and may also have serious implications
  • reflection (CAR): A Cooper pair may split into two electrons [2] (see Figure 1a), thereby generating pairs of entangled electrons in different metallic electrodes [3]. This phenomenon and its effect on electron transport in normal metal–superconductor–normal metal (NSN) hybrid structures were intensively
  • conducting channel transmissions τ1,n and τ2,n with n being the integer number enumerating all conducting channels. The two junctions are located at a distance considerably shorter than the superconducting coherence length ξ. Normal electrodes are kept at different temperatures T1 and T2, thus creating a
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Published 09 Jan 2023

Observation of collective excitation of surface plasmon resonances in large Josephson junction arrays

  • Roger Cattaneo,
  • Mikhail A. Galin and
  • Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2022, 13, 1578–1588, doi:10.3762/bjnano.13.132

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  • oscillating state. We use an external detector to measure the emission of electromagnetic waves. The emission power correlates with the step amplitude. Our results indicate that the emission is facilitated by the cavity modes in the electrodes. The modes are collectively excited by active junctions. In turn
  • , the standing wave imprints its order on the array, facilitating mutual phase-locking of junctions. This provides an indirect coupling mechanism, allowing for the synchronization of junctions, which do not directly interact with each other. Our results demonstrate that electrodes can effectively work
  • interaction via shared electromagnetic fields and currents [26]. For conventional overlap JJs the scale of such interaction is short (nanoscale) because it is limited by the corresponding screening lengths in superconducting electrodes [27]. However, for planar JJs the direct interaction can be of long range
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Published 28 Dec 2022

Utilizing the surface potential of a solid electrolyte region as the potential reference in Kelvin probe force microscopy

  • Nobuyuki Ishida

Beilstein J. Nanotechnol. 2022, 13, 1558–1563, doi:10.3762/bjnano.13.129

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  • electrodes. In Kelvin probe force microscopy (KPFM) measurements on electrochemical cells, the surface potential is generally measured relative to electrical ground instead of a stable reference. Here, we show that the changes in the surface potential, measured using KPFM relative to the surface potential in
  • interface [13]. In the case of KPFM measurements, the CPD can be measured not only at the electrodes but also over the electrolyte region. Therefore, the change in the potential difference across the electrode–electrolyte interface can, in principle, be detected without a reference electrode, although this
  • has not yet been directly confirmed. This study explored the possibility of obtaining a stable reference for KPFM measurements performed on electrochemical devices without a reference electrode. To this end, we prepared an electrochemical cell consisting of two Au electrodes and one Li reference
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Published 19 Dec 2022

Induced electric conductivity in organic polymers

  • Konstantin Y. Arutyunov,
  • Anatoli S. Gurski,
  • Vladimir V. Artemov,
  • Alexander L. Vasiliev,
  • Azat R. Yusupov,
  • Danfis D. Karamov and
  • Alexei N. Lachinov

Beilstein J. Nanotechnol. 2022, 13, 1551–1557, doi:10.3762/bjnano.13.128

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  • cyclohexanone immediately before applying the polymer solution. The electrodes consisted of two mutually perpendicular lead strips with a width of ≈1 mm, between which the PDP polymer film was ‘sandwiched’ (Figure 2a). Lead was chosen as fairly low-melting metal exhibiting superconducting properties. Formation
  • of thin-film lead electrodes with thicknesses from 50 nm to 200 nm was carried out by thermal evaporation in vacuum. The critical temperature of bulk lead is Тс(Pb3D) = 7.2 K. However, in the form of a thin film, the critical temperature of a superconductor can differ significantly from the tabulated
  • value [15][16]. In our samples, the critical temperature of lead electrodes varied from 7.8 K < Tc(Pbfilm) < 8.2 K. Submicron PDP films were prepared by centrifuging the polymer from a solution in cyclohexanone on a solid substrate. When preparing the solution, the polymer was first soaked in a small
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Published 19 Dec 2022

Photoelectrochemical water oxidation over TiO2 nanotubes modified with MoS2 and g-C3N4

  • Phuong Hoang Nguyen,
  • Thi Minh Cao,
  • Tho Truong Nguyen,
  • Hien Duy Tong and
  • Viet Van Pham

Beilstein J. Nanotechnol. 2022, 13, 1541–1550, doi:10.3762/bjnano.13.127

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  • electrodes were a Pt counter electrode, a Ag/AgCl 3 M reference electrode, and a MoS2/TNAs or g-C3N4/TNAs working electrode in a 1 M Na2SO4 (pH 7.4) electrolyte solution. The light source used in this study was a 150 W Xe lamp (ABET Instruments) with a calibrated luminous intensity of 100 mW·cm−2 and a UV
  • temperature (500 °C for 2 h) in [35] yielded better results better than those of this study. The investigation of the stability of the PEC electrodes from MoS2/TNAs and g-C3N4/TNAs is described in Figure S3, Supporting Information File 1. After every PEC test cycle, we immersed the PEC electrode in DI water
  • for 1 h and let it dry completely before the next test. We can conclude that the stability of the MoS2/TNAs heterojunction is higher than that of the g-C3N4/TNAs heterojunction. The decrease in catalytic activity of the PEC electrodes is explained by the leaching of the catalysts MoS2 and g-C3N4 after
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Published 16 Dec 2022

A TiO2@MWCNTs nanocomposite photoanode for solar-driven water splitting

  • Anh Quynh Huu Le,
  • Ngoc Nhu Thi Nguyen,
  • Hai Duy Tran,
  • Van-Huy Nguyen and
  • Le-Hai Tran

Beilstein J. Nanotechnol. 2022, 13, 1520–1530, doi:10.3762/bjnano.13.125

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  • performed in 0.1 M KCl solution at a scan rate of 50 mV·s−1 with a three-electrode cell using Ag/AgCl and Pt wire as the reference and counter electrodes, respectively. The prepared TiO2@MWCNTs electrode is used as the working electrode. The measurement is carried out in a lab under 350 ± 10 lux of
  • photoelectrochemical processes occurring at the interface between electrode and electrolyte [31]. Cyclic voltammetry measurements are utilized to analyze the characteristics of charge and discharge of the photoelectrochemical electrodes. Figure 8a shows the cyclic voltammograms (CVs) generated using the prepared TiO2
  • , MWCNTs, and TiO2@MWCNTs electrodes as working electrodes in 0.1 M KCl electrolyte at a sweep rate of 50 mV/s. In Figure 8a, oxidation and reduction peaks are not observed in the CVs in the scanned potential range from −1.0 to +0.2 V. In the CV of the TiO2 electrode, the current decreases significantly at
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Published 14 Dec 2022

Structural studies and selected physical investigations of LiCoO2 obtained by combustion synthesis

  • Monika Michalska,
  • Paweł Ławniczak,
  • Tomasz Strachowski,
  • Adam Ostrowski and
  • Waldemar Bednarski

Beilstein J. Nanotechnol. 2022, 13, 1473–1482, doi:10.3762/bjnano.13.121

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  • with silver paste (Hans Wolbring GmbH) to form electrodes. IS measurements were performed using a Novocontrol AlphaA Broadband Dielectric/Impedance Spectrometer (Novocontrol GmbH) at room temperature. Measurements were carried out in the frequency range from 1 Hz to 1 MHz with an oscillation voltage of
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Published 07 Dec 2022

Rapid and sensitive detection of box turtles using an electrochemical DNA biosensor based on a gold/graphene nanocomposite

  • Abu Hashem,
  • M. A. Motalib Hossain,
  • Ab Rahman Marlinda,
  • Mohammad Al Mamun,
  • Khanom Simarani and
  • Mohd Rafie Johan

Beilstein J. Nanotechnol. 2022, 13, 1458–1472, doi:10.3762/bjnano.13.120

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  • scanning electron microscopy and structural characteristics were analysed by using energy-dispersive X-ray, UV–vis, and Fourier-transform infrared spectroscopy. The electrochemical characteristics of the modified electrodes were studied by cyclic voltammetry, differential pulse voltammetry (DPV), and
  • the immobilisation of DNA. Supporting Information File 1, Table S1 illustrates the major peaks and their shifting after each modification of the nanocomposites. Modified effective surface area of screen-printed carbon electrodes Cyclic voltammetry (CV) was employed to measure SPCE and modified SPCE at
  • ). Electrochemical characterisation of screen-printed carbon electrodes Figure 3b shows the CV behaviour of SPCE and different modified SPCEs with 2 mM of a [Fe(CN)6]3−/4− aqueous solution in 0.2 M KCl at a scan rate of 100 mV/S. Compared with bare SPCE, the peak currents of Gr/SPCE and AuNPs/SPCE considerably
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Published 06 Dec 2022

Coherent amplification of radiation from two phase-locked Josephson junction arrays

  • Mikhail A. Galin,
  • Vladimir M. Krasnov,
  • Ilya A. Shereshevsky,
  • Nadezhda K. Vdovicheva and
  • Vladislav V. Kurin

Beilstein J. Nanotechnol. 2022, 13, 1445–1457, doi:10.3762/bjnano.13.119

Graphical Abstract
  • straight electrodes with niobium JJs have been directly visualized recently using low-temperature scanning laser microscopy [13]. The scans revealed that the standing waves can provide the global coupling of all junctions in the array, that is, extended parts of the array can interact with each other. This
  • generates the two-dimensional resonant mode that should lead to the increased output power. Therefore, along with the interaction between individual JJs, there is also a mutual coupling between different arrays (including JJs and electrodes) [14]. In the ideal case of two perfectly phase-locked arrays with
  • the array electrodes. This leads to a profound enhancement of resonant step amplitudes in the IVCs of the arrays, indicating that the state of one array is strongly affected by oscillations in another array. The inter-array coupling is manifested by a significant amplification of emitted power with a
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Published 06 Dec 2022

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

  • Nirmalendu S. Mishra and
  • Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

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  • utilizing an EMX micro A200-9.5/12/S/W, Bruker Biospin, Germany. Photoelectrochemical study The photoelectrochemical properties of the studied materials were evaluated through a CHI 650 electrochemical workstation comprising a three-electrode system with Pt and Ag/AgCl as counter and reference electrodes
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Published 22 Nov 2022
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