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Search for "nanostructures" in Full Text gives 748 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Atmospheric water harvesting using functionalized carbon nanocones

  • Fernanda R. Leivas and
  • Marcia C. Barbosa

Beilstein J. Nanotechnol. 2023, 14, 1–10, doi:10.3762/bjnano.14.1

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  • occurs due to the presence of hydrophilic sites at the nanocone entrance. The functionalization, together with the high mobility of water inside nanostructures, leads to a fast water flow through the nanostructure. We show using molecular dynamics simulations that this device is able to collect water if
  • super flow in nanostructures has been explored in processes of separating water from salt or from other contaminants. This high mobility of water under nanoconfinement requires huge pressure and, consequently, a lot of energy [27][28]. In order to help water entrance and decrease the amount of required
  • pressure, nanotubes have been functionalized with hydrophilic groups [29][30]. The addition of hydrophilic regions in small diameter environments, however, decreases the velocity of water molecules [31]. The high flow of water in nanostructures is also useful for capturing water from the atmosphere
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Published 02 Jan 2023

Density of states in the presence of spin-dependent scattering in SF bilayers: a numerical and analytical approach

  • Tairzhan Karabassov,
  • Valeriia D. Pashkovskaia,
  • Nikita A. Parkhomenko,
  • Anastasia V. Guravova,
  • Elena A. Kazakova,
  • Boris G. Lvov,
  • Alexander A. Golubov and
  • Andrey S. Vasenko

Beilstein J. Nanotechnol. 2022, 13, 1418–1431, doi:10.3762/bjnano.13.117

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  • behavior of DOS dependencies on magnetic and spin–orbit scattering times is discussed. Keywords: density of states; Josephson junctions; proximity effect; superconductivity; superconductor/ferromagnet hybrid nanostructures; Introduction It is well-known that superconductivity can be induced in a non
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Published 01 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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  • crystallographic characterization. The morphology of the obtained nanostructures was captured by high-resolution transmission electron microscopy (HRTEM, Talos F200X G2, Thermo Scientific). The optical properties were characterized with a Shimadzu UV 2600 UV–vis spectrophotometer with an integrating sphere
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Published 22 Nov 2022

Supramolecular assembly of pentamidine and polymeric cyclodextrin bimetallic core–shell nanoarchitectures

  • Alexandru-Milentie Hada,
  • Nina Burduja,
  • Marco Abbate,
  • Claudio Stagno,
  • Guy Caljon,
  • Louis Maes,
  • Nicola Micale,
  • Massimiliano Cordaro,
  • Angela Scala,
  • Antonino Mazzaglia and
  • Anna Piperno

Beilstein J. Nanotechnol. 2022, 13, 1361–1369, doi:10.3762/bjnano.13.112

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  • nanostructures endowed with unique physicochemical properties. Recently, we have proposed a straightforward synthetic strategy that exploits the properties of polymeric β-cyclodextrin (PolyCD) to act as both the reducing and stabilizing agent to produce monodispersed and stable gold-based NPs either as
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Published 18 Nov 2022

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

  • Vishal Dutta,
  • Ankush Chauhan,
  • Ritesh Verma,
  • C. Gopalkrishnan and
  • Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

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  • making nanostructures of functional materials. However, templates were chosen rather based on utility than on cost. The self-template technology does not require additional templates, which leads to less expensive production and increased efficiency. This makes the approach more realistic for practical
  • regular structures. The aqueous NH3 solution provided OH− ions for the successful exchange of I−, and the result was the synthesis of Bi7O9I3. The Bi7O9I3/NTC has evenly distributed Bi7O9I3 nanostructures in the shape of lanterns formed of extremely thin nanosheets with a thickness of less than 10 nm on
  • plasmonic photocatalyst. Nanospheres, nanorods, and nanosheets can be synthesized using various techniques. Hydrothermal calcination, template synthesis, precipitation, reverse micro-emulsion, sonochemical procedures, and microwave methods are typical techniques for fabricating Bi-based nanostructures [77
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Published 11 Nov 2022

Bending and punching characteristics of aluminum sheets using the quasi-continuum method

  • Man-Ping Chang,
  • Shang-Jui Lin and
  • Te-Hua Fang

Beilstein J. Nanotechnol. 2022, 13, 1303–1315, doi:10.3762/bjnano.13.108

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  • , nanoelectromechanical systems (NEMS), environmental science, and semiconductors [1][2][3][4][5][6][7][8][9][10]. The increased requirements for advanced nanostructures simultaneously give rise to extensive researches in precision machining techniques, including nanoimprinting lithography (NIL) [11][12], mechanical nano
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Published 10 Nov 2022

Enhanced electronic transport properties of Te roll-like nanostructures

  • E. R. Viana,
  • N. Cifuentes and
  • J. C. González

Beilstein J. Nanotechnol. 2022, 13, 1284–1291, doi:10.3762/bjnano.13.106

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  • work, the electronic transport properties of Te roll-like nanostructures were investigated in a broad temperature range by fabricating single-nanostructure back-gated field-effect-transistors via photolithography. These one-dimensional nanostructures, with a unique roll-like morphology, were produced
  • by a facile synthesis and extensively studied by scanning and transmission electron microscopy. The nanostructures are made of pure and crystalline Tellurium with trigonal structure (t-Te), and exhibit p-type conductivity with enhanced field-effect hole mobility between 273 cm2/Vs at 320 K and 881
  • electrical properties of these nanostructures, with a small disorder, and superior quality for nanodevice applications. Keywords: electrical characterization; field-effect transistors; hopping conduction; nanobelts; tellurium; Introduction The chalcogen tellurium (Te) is a rare element (0.002 ppm) in the
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Published 08 Nov 2022

Laser-processed antiadhesive bionic combs for handling nanofibers inspired by nanostructures on the legs of cribellate spiders

  • Sebastian Lifka,
  • Kristóf Harsányi,
  • Erich Baumgartner,
  • Lukas Pichler,
  • Dariya Baiko,
  • Karsten Wasmuth,
  • Johannes Heitz,
  • Marco Meyer,
  • Anna-Christin Joel,
  • Jörn Bonse and
  • Werner Baumgartner

Beilstein J. Nanotechnol. 2022, 13, 1268–1283, doi:10.3762/bjnano.13.105

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  • ; nanostructures; Introduction Nanofibers have a diameter of approximately 10 to 800 nm, whereas their length is much greater than their diameter, which is why the term fiber or thread is used. These fibers are constantly drawing the attention of engineers because their surface-to-volume ratio is favorable for
  • titanium alloy samples in Figure 9. Thus, the force measured for peel-off from the polished surface is not the force needed to detach the fibers from the surface, but to tear a superficial fiber layer from the rest of the nonwoven. Conclusion Mimicking the principle of nanostructures on the calamistrum of
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Published 07 Nov 2022

Studies of probe tip materials by atomic force microscopy: a review

  • Ke Xu and
  • Yuzhe Liu

Beilstein J. Nanotechnol. 2022, 13, 1256–1267, doi:10.3762/bjnano.13.104

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  • cutting process. Complex nanostructures with high spreading chord ratios can be scanned using carbon nanotube probes, thus solving the long-standing problem of mapping complex nanostructures. A colloidal probe [12][13] consists of colloidal particles attached to an AFM cantilever to measure the
  • aspect ratios. The imaging results showed higher spatial resolution and prominent tips with CNTs with aspect ratios greater than 10 compared to standard AFM probes. Using such CNT probes for scanning complex nanostructures could solve the long-standing problem of mapping complex nanostructures. Composite
  • future, such probes will enable previously unexplored conductivity measurements, such as measurements of semiconductor nanostructures or electrical conductivity on insulating substrates. Conductive atomic force microscopy (C-AFM) can be used to characterize the electrical properties of semi-conductive
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Published 03 Nov 2022

Roll-to-roll fabrication of superhydrophobic pads covered with nanofur for the efficient clean-up of oil spills

  • Patrick Weiser,
  • Robin Kietz,
  • Marc Schneider,
  • Matthias Worgull and
  • Hendrik Hölscher

Beilstein J. Nanotechnol. 2022, 13, 1228–1239, doi:10.3762/bjnano.13.102

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  • sandblasted steel-plates as mold inserts. It is an interesting feature of this procedure that a surface with nanostructures is realized without elaborate and costly lithography. Nanofur can be hot-pulled from several types of polymers [16]. Nonetheless, the surface area per process step is limited to some
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Published 31 Oct 2022

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

  • Yinglin Ma,
  • Xiangyun Xiao and
  • Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

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  • design of the recognition layers. Various strategies have been employed for studying the relationship between the structural features and the specific detection of chiral isomers. This review provides an overview of the construction of chiral sensing layers by various nanostructures and materials in the
  • QCM system, which include organic molecules, supermolecular assemblies, inorganic nanostructures, and metal surfaces. The sensing mechanisms based on these surface nanostructures and the related potentials for chiral detection by the QCM system are also summarized. Keywords: assembled nanostructure
  • sensors is always based on aspects of effective chiral host molecules, proper chiral surface functions, and suitable host nanostructures. To achieve high chiral selectivity and sensitivity, it is also essential to understand the basis of the interactions for the formation of transient diastereomeric
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Published 27 Oct 2022

Application of nanoarchitectonics in moist-electric generation

  • Jia-Cheng Feng and
  • Hong Xia

Beilstein J. Nanotechnol. 2022, 13, 1185–1200, doi:10.3762/bjnano.13.99

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  • area between the nanomaterial and the moisture larger and greatly improves the carrier yield. Therefore, in the abovementioned charge transfer mechanism, nanostructures theoretically yield better performance [18][19][20]. More researchers have also noticed that nanoarchitectonics can significantly
  • . Different nanostructures also have an influence on the performance of MEGs, which is worth further investigation. Metal compound nanomaterials have been successfully used in many fields, such as optoelectronic, thermoelectric, and piezoelectric devices [56][57][58][59][60]. With the knowledge about
  • parameters such as humidity, airflow rate, airflow direction, and number of oxygen-containing groups on the output power of nanostructures [80]. Figure 7c shows that the higher the humidity, the greater the output voltage. When the relative humidity of the device increases, the interaction area between the
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Published 25 Oct 2022

Rapid fabrication of MgO@g-C3N4 heterojunctions for photocatalytic nitric oxide removal

  • Minh-Thuan Pham,
  • Duyen P. H. Tran,
  • Xuan-Thanh Bui and
  • Sheng-Jie You

Beilstein J. Nanotechnol. 2022, 13, 1141–1154, doi:10.3762/bjnano.13.96

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  • with a lower bandgap is an efficient process for improving the photocatalytic performance. Li and co-workers reported an improvement in the photocatalytic efficiency of MgO@g-C3N4 for the photoreduction of CO2 under visible light [33]. Similarly, MgO-modified g-C3N4 nanostructures enhanced the removal
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Published 18 Oct 2022

Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

  • Se-Kwon Kim,
  • Sesha Subramanian Murugan,
  • Pandurang Appana Dalavi,
  • Sebanti Gupta,
  • Sukumaran Anil,
  • Gi Hun Seong and
  • Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

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  • nanosized hydroxyapatite crystals with connective collagen fibrils [27]. The bone possesses a unique combination of strength and stiffness, and it has excellent compressive strength and tensile strength due to the attribution of deep nanostructures of inorganic and organic components. Human bones are
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Published 29 Sep 2022

Electrocatalytic oxygen reduction activity of AgCoCu oxides on reduced graphene oxide in alkaline media

  • Iyyappan Madakannu,
  • Indrajit Patil,
  • Bhalchandra Kakade and
  • Kasibhatta Kumara Ramanatha Datta

Beilstein J. Nanotechnol. 2022, 13, 1020–1029, doi:10.3762/bjnano.13.89

Graphical Abstract
  • nanostructures. Also, upon increasing the Ag fraction in the sample, the dispersion of the trimetallic assembly considerably increases, which is clearly reflected in Figure S3c–e, Supporting Information File 1. The importance of the rGO support is further evident from the imaging of supportless the ACC-2* sample
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Published 26 Sep 2022

Numerical study on all-optical modulation characteristics of quantum cascade lasers

  • Biao Wei,
  • Haijun Zhou,
  • Guangxiang Li and
  • Bin Tang

Beilstein J. Nanotechnol. 2022, 13, 1011–1019, doi:10.3762/bjnano.13.88

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  • physics in QCL’s gain medium which consists of multiple of dielectric nanostructures with high refractive index under light injection, we modified the 1½-period model to calculate values of electron population and lifetime in each subband which is separated by the nanostructures, optical gain, current and
  • optimizing its use and dielectric nanostructure design. Keywords: all-optical modulation; dielectric nanostructures; high refractive index materials; numerical study; quantum cascade lasers; Introduction The quantum cascade laser (QCL) was invented nearly 30 years ago [1], and its cavity consists of
  • multiple nanostructures, which are grown by molecular beam epitaxy (MBE) [1]. It has been widely used in the fields of free space optical communication [2][3], gas detection [4][5], and biological research [6][7]. Because the QCL is a narrow linewidth and high-power laser working in the mid-infrared to
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Published 23 Sep 2022

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

  • Jānis Sniķeris,
  • Vjačeslavs Gerbreders,
  • Andrejs Bulanovs and
  • Ēriks Sļedevskis

Beilstein J. Nanotechnol. 2022, 13, 1004–1010, doi:10.3762/bjnano.13.87

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  • Janis Snikeris Vjaceslavs Gerbreders Andrejs Bulanovs Eriks Sledevskis Daugavpils University, Institute of Life Sciences and Technologies, Parādes Str. 1, Daugavpils, LV-5401, Latvia 10.3762/bjnano.13.87 Abstract Metallic nanostructures are applied in many fields, including photonics and
  • plasmonics, due to their ability to absorb or emit light at frequencies which depend on their size and shape. It was recently shown that irradiation by a focused electron beam can promote the growth of nanostructures on metal surfaces and the height of these structures depends on the duration of the
  • angle of incidence the growth rate decreased; however, by raising the beam focus up to 5–6 μm above the surface the growth rate increased. Vacuum chamber cleaning reduced structure growth rate for a few hours. These findings can help to better control and optimise the growth of nanostructures on metal
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Published 22 Sep 2022

Design of a biomimetic, small-scale artificial leaf surface for the study of environmental interactions

  • Miriam Anna Huth,
  • Axel Huth,
  • Lukas Schreiber and
  • Kerstin Koch

Beilstein J. Nanotechnol. 2022, 13, 944–957, doi:10.3762/bjnano.13.83

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  • nanostructures) [27]. Due to this structural diversity and different chemical modifications, plant surfaces can have different wetting properties, ranging from superhydrophobic to superhydrophilic [28]. An overview of the diverse microstructures and their influence on the wettability of plant surfaces is given
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Published 13 Sep 2022

Ultrafast signatures of magnetic inhomogeneity in Pd1−xFex (x ≤ 0.08) epitaxial thin films

  • Andrey V. Petrov,
  • Sergey I. Nikitin,
  • Lenar R. Tagirov,
  • Amir I. Gumarov,
  • Igor V. Yanilkin and
  • Roman V. Yusupov

Beilstein J. Nanotechnol. 2022, 13, 836–844, doi:10.3762/bjnano.13.74

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  • ferromagnetic metals was a subject of interest in magnetic nanostructures [50][51][52] and had a value of about 3 × 105 m/s. Being stronger localized in the narrower 4d bands [44], the itinerant 4d electrons must have a lower velocity, say 105 m/s. Then, with the transport time τ ≈ 10−14 s and the electron-spin
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Published 25 Aug 2022

Approaching microwave photon sensitivity with Al Josephson junctions

  • Andrey L. Pankratov,
  • Anna V. Gordeeva,
  • Leonid S. Revin,
  • Dmitry A. Ladeynov,
  • Anton A. Yablokov and
  • Leonid S. Kuzmin

Beilstein J. Nanotechnol. 2022, 13, 582–589, doi:10.3762/bjnano.13.50

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  • Common Research Center “Physics and technology of micro- and nanostructures” of IPM RAS. Funding The work is supported by the Russian Science Foundation (Project No. 19-79-10170).
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Published 04 Jul 2022

Detection and imaging of Hg(II) in vivo using glutathione-functionalized gold nanoparticles

  • Gufeng Li,
  • Shaoqing Li,
  • Rui Wang,
  • Min Yang,
  • Lizhu Zhang,
  • Yanli Zhang,
  • Wenrong Yang and
  • Hongbin Wang

Beilstein J. Nanotechnol. 2022, 13, 549–559, doi:10.3762/bjnano.13.46

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  • may be due to the introduction of gold nanostructures. Previous studies showed that GNPs-GSH-Rh6G2 permeate well into cells [48][57][58]. Cytotoxicity studies of nanomaterials are important to determine the effects of different components of the nanostructure [59][60]. The cytotoxicity of GSH-Rh6G2
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Published 23 Jun 2022

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

  • Ioana Marica,
  • Fran Nekvapil,
  • Maria Ștefan,
  • Cosmin Farcău and
  • Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

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  • surface features, and the specific location of analyte molecules. Lately, ZnO-based nanostructures have been exploited especially as SERS substrates showing high enhancement factors and increased charge transfer effect. Additionally, applications focused on enhancing the fluorescence of analyte molecules
  • as well as on tuning the photoluminescence properties of ZnO nanostructures through combination with metal nanoparticles. This review covers the major recent results of ZnO-based nanostructures used for fluorescence and Raman signal enhancement. The broad range of ZnO and ZnO–metal nanostructures
  • synthesis methods are discussed, highlighting low-cost methods and the recyclability of ZnO-based nanosubstrates. Also, the SERS signal enhancement by ZnO-based nanostructures and the influences of lattice defects on the SERS signal are described. The photoluminescence enhancement of ZnO in the presence of
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Published 27 May 2022

Investigation of electron-induced cross-linking of self-assembled monolayers by scanning tunneling microscopy

  • Patrick Stohmann,
  • Sascha Koch,
  • Yang Yang,
  • Christopher David Kaiser,
  • Julian Ehrens,
  • Jürgen Schnack,
  • Niklas Biere,
  • Dario Anselmetti,
  • Armin Gölzhäuser and
  • Xianghui Zhang

Beilstein J. Nanotechnol. 2022, 13, 462–471, doi:10.3762/bjnano.13.39

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  • role in science and technology. A highly focused electron beam is employed to create nanostructures via electron-beam lithography [1], and has been further developed to produce three-dimensional structures through controlled dissociation of precursor molecules [2]. Electron-induced chemistry has also
  • of molecular dissociation and bond formation. In related efforts, on surface polymerization, a reaction of monomers in a two-dimensional confined space has developed rapidly in the last decades, representing a new strategy to create functional molecular nanostructures in a controlled fashion [6][7][8
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Published 25 May 2022

Tunable superconducting neurons for networks based on radial basis functions

  • Andrey E. Schegolev,
  • Nikolay V. Klenov,
  • Sergey V. Bakurskiy,
  • Igor I. Soloviev,
  • Mikhail Yu. Kupriyanov,
  • Maxim V. Tereshonok and
  • Anatoli S. Sidorenko

Beilstein J. Nanotechnol. 2022, 13, 444–454, doi:10.3762/bjnano.13.37

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  • Engineering and Nanotechnologies ASM, MD2028 Kishinev, Moldova Laboratory of Functional Nanostructures, Orel State University named after I.S. Turgenev, 302026, Orel, Russia 10.3762/bjnano.13.37 Abstract The hardware implementation of signal microprocessors based on superconducting technologies seems
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Published 18 May 2022

A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures

  • Irena Mihailova,
  • Vjaceslavs Gerbreders,
  • Marina Krasovska,
  • Eriks Sledevskis,
  • Valdis Mizers,
  • Andrejs Bulanovs and
  • Andrejs Ogurcovs

Beilstein J. Nanotechnol. 2022, 13, 424–436, doi:10.3762/bjnano.13.35

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  • nanostructures were obtained by a one-step hydrothermal oxidation method. The resulting coating is uniform and dense and shows good adhesion to the wire surface. Structure, surface, and composition of the obtained samples were studied using field-emission scanning electron microscopy along with energy-dispersive
  • qualitative detection of H2O2 in real samples, as well as for the quantitative determination of its concentration. Keywords: copper oxide; electrochemical sensor; hydrogen peroxide; nanostructures; Introduction Hydrogen peroxide, a strong oxidant and an essential intermediate product in many biomedical
  • ]. Compared to bulk materials, nanostructures have higher catalytic activity and a significantly increased surface area-to-volume ratio, which makes it possible to significantly increase both sensitivity of the sensor and rate of detection of H2O2. Among the nanostructured materials used, the most promising
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Published 03 May 2022
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