CuInSe₂ quantum dots grown by molecular beam epitaxy on amorphous SiO₂ surfaces

• Henrique Limborço,
• Pedro M.P. Salomé,
• Rodrigo Ribeiro-Andrade,
• Jennifer P. Teixeira,
• Nicoleta Nicoara,
• Kamal Abderrafi,
• Joaquim P. Leitão,
• Juan C. Gonzalez and
• Sascha Sadewasser

Beilstein J. Nanotechnol. 2019, 10, 1103–1111, doi:10.3762/bjnano.10.110

• layer prior to the protective Pt bi-layer deposition assisted by electron and ion beams. The final polishing of the lamella was done using 1 keV in energy to reduce the lateral damage and the Ga implantation effects in the lamellae. EDS was performed in the same STEM microscope in order to check the [Cu

Glucose-derived carbon materials with tailored properties as electrocatalysts for the oxygen reduction reaction

• Rafael Gomes Morais,
• Natalia Rey-Raap,
• José Luís Figueiredo and
• Manuel Fernando Ribeiro Pereira

Beilstein J. Nanotechnol. 2019, 10, 1089–1102, doi:10.3762/bjnano.10.109

• incorporate nitrogen atoms and to modify the surface chemistry of carbon materials [39][40]. Some of these doping techniques have shown to provide materials with similar ORR performance as commercially available Pt/C electrocatalysts [39]. However, most of these studies have been focused only on the effect of

Synthesis of novel C-doped g-C₃N₄ nanosheets coupled with CdIn₂S₄ for enhanced photocatalytic hydrogen evolution

• Jingshuai Chen,
• Chang-Jie Mao,
• Helin Niu and
• Ji-Ming Song

Beilstein J. Nanotechnol. 2019, 10, 912–921, doi:10.3762/bjnano.10.92

• transfer nanochannels [5]. The as-prepared g-C3N4 nanosheet@ZnIn2S4 nanoleaf structure displays an enhanced photocatalytic activity for H2 production without the addition of a Pt co-catalyst. As visible-light-active photocatalysts, ternary metal sulfide (e.g., ZnIn2S4 and CdIn2S4) have attracted great

• enhance photocatalytic activity. Accordingly, the two-step fabrication of CdIn2S4/CCN photocatalysts with different CdIn2S4 content is the target of this study. It is demonstrated that the CdIn2S4/CCN hybrid shows a superior H2 production activity without the addition of a Pt co-catalyst under visible

• use of the additive Pt co-catalyst. As shown in Figure 8, the pristine g-C3N4 presents a negligible H2 generation rate, but after introduction of the self-doped C by a simple supramolecular self-assembly method, the CCN nanosheets display a higher H2 generation rate due to the presence of the large

Fabrication of silver nanoisland films by pulsed laser deposition for surface-enhanced Raman spectroscopy

• Bogusław Budner,
• Mariusz Kuźma,
• Barbara Nasiłowska,
• Bartosz Bartosewicz,
• Malwina Liszewska and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2019, 10, 882–893, doi:10.3762/bjnano.10.89

• procedure described in Supporting Information File 1. In our EF calculations we have assumed that the intensity of the Raman pMA signal on Pt increased due to the chemical factor of 102 and corrected the obtained EF values by this number [32][33]. The values of the EF of the Raman signal for SNIFs were

Novel reversibly switchable wettability of superhydrophobic–superhydrophilic surfaces induced by charge injection and heating

• Xiangdong Ye,
• Junwen Hou and
• Dongbao Cai

Beilstein J. Nanotechnol. 2019, 10, 840–847, doi:10.3762/bjnano.10.84

• Dongwen) was used for wettability modification of the silica surfaces. An S3000 scanning electron microscope (SEM, Japan Hitachi Group) and a Kelvin probe force microscope (Bruker Dimension Icon, Brook) with a SCM-PIT probe (Pt/Ir coated tips, 2.8 N/m, 75 kHz, Pt/Ir reflective coating) were used for

Capillary force-induced superlattice variation atop a nanometer-wide graphene flake and its moiré origin studied by STM

• Loji K. Thomas and
• Michael Reichling

Beilstein J. Nanotechnol. 2019, 10, 804–810, doi:10.3762/bjnano.10.80

• suitable for STM operation at a solid–liquid interface. In STM experiments, the meniscus is macroscopically visible with dimensions equal to the diameter of the tip (A-side). Typical Pt/Ir tips used are 0.25 mm in diameter. The lateral spread of the liquid on the surface side (B-side) extents much beyond

• sharpened Pt/Ir 80/20% wires (Goodfellow Cambridge limited, Huntingdon, United Kingdom) were used as STM tips. The solution was drop-cast on HOPG, and the images were taken at a solution–graphite interface with a thin meniscus between the tip and the sample. By imaging the atomic structure of the bare

An iridescent film of porous anodic aluminum oxide with alternatingly electrodeposited Cu and SiO₂ nanoparticles

• Menglei Chang,
• Huawen Hu,
• Haiyan Quan,
• Hongyang Wei,
• Zhangyi Xiong,
• Jiacong Lu,
• Pin Luo,
• Yaoheng Liang,
• Jianzhen Ou and
• Dongchu Chen

Beilstein J. Nanotechnol. 2019, 10, 735–745, doi:10.3762/bjnano.10.73

• approximately 5.7 cm2. After being allowed to stand for 24 h, the sample was exposed to the electrochemical impedance measurements. A three-electrode system was adopted for the measurements, and a Pt wire and a saturated calomel electrode (SCE) were employed as the auxiliary electrode and reference electrode

Deposition of metal particles onto semiconductor nanorods using an ionic liquid

• Michael D. Ballentine,
• Elizabeth G. Embry,
• Marco A. Garcia and
• Lawrence J. Hill

Beilstein J. Nanotechnol. 2019, 10, 718–724, doi:10.3762/bjnano.10.71

• be used to deposit nanoscopic noble metal particles onto a well-defined semiconductor nanorod substrate with diameters less than 10 nm. We found that photodeposition of platinum onto CdSe@CdS (core@shell) nanorods proceeded readily from Pt(acac)2 in the ionic liquid 1-butyl-3-methylimidazolium bis

• ionic liquid due to its facile synthesis and the hydrophobicity imparted by the fluorinated anion. For metal deposition in organic media (tol-NR, Figure 1a), CdSe@CdS nanorods were dispersed in toluene containing triethylamine and Pt(acac)2 followed by irradiation using a xenon arc lamp. For metal

• deposition using the ionic liquid, (IL-NR, Figure 1b), CdSe@CdS nanorods were dispersed in [bmim][Tf2N] containing Pt(acac)2 without addition of triethylamine as a sacrificial reducing agent, followed by irradiation using a xenon arc lamp. Nanorod powders were difficult to disperse directly in [bmim][Tf2N

Review of time-resolved non-contact electrostatic force microscopy techniques with applications to ionic transport measurements

• Aaron Mascaro,
• Yoichi Miyahara,
• Tyler Enright,
• Omur E. Dagdeviren and
• Peter Grütter

Beilstein J. Nanotechnol. 2019, 10, 617–633, doi:10.3762/bjnano.10.62

• between a Pt-coated AFM tip and a gold substrate (separated by about 20 nm) under high vacuum (ca. 10−6 mbar, Jeol JSPM-5200) to simulate ionic transport in the sample with a known decay time constant. Note that a separation ≥1 nm is necessary in general to ensure that no charge is injected into the

Hydrophilicity and carbon chain length effects on the gas sensing properties of chemoresistive, self-assembled monolayer carbon nanotube sensors

• Juan Casanova-Cháfer,
• Carla Bittencourt and
• Eduard Llobet

Beilstein J. Nanotechnol. 2019, 10, 565–577, doi:10.3762/bjnano.10.58

• more responsive to nitrogen dioxide than Au, Pt or Pd-decorated CNTs when operated at room temperature [10][18][40]. This was attributed to a stronger interaction and charge transfer between nitrogen dioxide and oxygenated defects in CNTs than with metal clusters. Possibly the surface of metal clusters

Mo-doped boron nitride monolayer as a promising single-atom electrocatalyst for CO₂ conversion

• Qianyi Cui,
• Gangqiang Qin,
• Weihua Wang,
• Lixiang Sun,
• Aijun Du and
• Qiao Sun

Beilstein J. Nanotechnol. 2019, 10, 540–548, doi:10.3762/bjnano.10.55

• earth, thus using Mo-doped BN monolayers as an electrocatalyst for CO2 conversion can significantly reduce the cost compared with conventional noble-metal catalysts, such Au, Ag, Pt, Pd and so on [30][33][48][49]. This work provides insight and guidance to experimentalists in search of low cost, high

Ceria/polymer nanocontainers for high-performance encapsulation of fluorophores

• Kartheek Katta,
• Dmitry Busko,
• Yuri Avlasevich,
• Katharina Landfester,
• Stanislav Baluschev and
• Rafael Muñoz-Espí

Beilstein J. Nanotechnol. 2019, 10, 522–530, doi:10.3762/bjnano.10.53

• film at the oil–water interface [32] or rose bengal embedded in a microcapsule shell [33] can also be used to protect the encapsulated dye from molecular oxygen. Incorporating oxygen-scavenging materials such as WO3 photocatalysts loaded with Pt [34], phosphonate coatings [35], organophosphates [36] or

Widening of the electroactivity potential range by composite formation – capacitive properties of TiO₂/BiVO₄/PEDOT:PSS electrodes in contact with an aqueous electrolyte

• Konrad Trzciński,
• Mariusz Szkoda,
• Andrzej P. Nowak,
• Marcin Łapiński and
• Anna Lisowska-Oleksiak

Beilstein J. Nanotechnol. 2019, 10, 483–493, doi:10.3762/bjnano.10.49

• vs Ag/AgCl (0.1 M KCl)). The charge consumed during polymerization was in the range from 0.01 to 0.1 mC·cm−2 per pulse, which is expected to deposit a conducting polymer film of 0.07 to 0.7 nm per pulse. An exemplary chronoamperometric curve (single pulse) is presented in Figure 1a. A Pt/PEDOT:PSS

• polymer, particularly PEDOT, may be used as an electrode material for supercapacitors in both aqueous [67] and nonaqueous electrolytes [68]. In Figure 4c cv curves of Ti/TiO2/BiVO4/PEDOT:PSS, Ti/TiO2/PEDOT:PSS, and Pt/PEDOT:PSS electrode materials are compared. The range of electrochemical activity is

• wider for the composite electrodes in comparison with bare PEDOT:PSS on a platinum substrate due to PEDOT overoxidation [42], which starts to occur at a potential of E = 0.7 V only in the case of the Pt/PEDOT:PSS electrode. The Ti/TiO2/BiVO4/PEDOT:PSS and Ti/TiO2/PEDOT:PSS electrodes can be safely

Temperature-dependent Raman spectroscopy and sensor applications of PtSe₂ nanosheets synthesized by wet chemistry

• Mahendra S. Pawar and
• Dattatray J. Late

Beilstein J. Nanotechnol. 2019, 10, 467–474, doi:10.3762/bjnano.10.46

• a homogeneous solution, the mixture was carefully stirred for 15–20 s until the colour of the solution became slightly yellow; this is referred to as the Pt precursor. In another beaker 0.8 mg of Se powder was added into a 10 mL ice-cold solution of 0.1 M NaBH4 which acts as a strong reducing agent

• for the reduction of Se powder. The solution of Se was then heated in an oil bath at 90 °C for ≈20 min in order to completely reduce the Se. After complete reduction, the colour of the solution became dark brown and is referred to as the Se precursor. The Pt precursor was then slowly added into the Se

• precursor. The colour of the solution was found to suddenly change to greenish brown. The mixture was then kept undisturbed for ≈20 min. After 20 min the complex of Pt and Se was formed on the wall of the beaker. The complex was then washed several times using deionized water. First complex was transferred

Biocompatible organic–inorganic hybrid materials based on nucleobases and titanium developed by molecular layer deposition

• Leva Momtazi,
• Henrik H. Sønsteby and
• Ola Nilsen

Beilstein J. Nanotechnol. 2019, 10, 399–411, doi:10.3762/bjnano.10.39

• and therapy, and probes for biosensing [1]. Nucleobases are constituents of DNA and RNA and can interact with different metals to form several molecular assemblies [2][3]. In the 1960s, a powerful antitumor agent named cisplatin (cis-[Pt(NH3)2Cl2]) was discovered by Rosenberg [4]. Later it was

Integration of LaMnO_3+δ films on platinized silicon substrates for resistive switching applications by PI-MOCVD

• Raquel Rodriguez-Lamas,
• Dolors Pla,
• Odette Chaix-Pluchery,
• Benjamin Meunier,
• Fabrice Wilhelm,
• Andrei Rogalev,
• Laetitia Rapenne,
• Xavier Mescot,
• Quentin Rafhay,
• Hervé Roussel,
• Michel Boudard,
• Carmen Jiménez and
• Mónica Burriel

Beilstein J. Nanotechnol. 2019, 10, 389–398, doi:10.3762/bjnano.10.38

• functions of electrode and active material, creating an ohmic contact or a Schottky barrier. Furthermore, some electrodes can be oxidized forming a new interface layer that can also act as oxygen reservoir (e.g., Ti, TiO2) [20][21][22]. The use of Pt as bottom electrode in our LMO-based devices guarantees

• an inert and ohmic contact, as the work function of LMO is 4.5–5.1 eV [23] and the one of Pt is 5.9–6.2 eV [24]. In order to integrate crystalline LMO memristive films in silicon-based devices, we used commercial platinized silicon as the bottom electrode/substrate heterostructure. Nevertheless

• , these substrates undergo dewetting when exposed to high temperatures for long times. The high temperatures required to grow perovskite thin films by techniques such as PI-MOCVD or PLD are a drawback because the continuity of the Pt bottom electrode can be lost [25]. In this work, we explore a number of

Intuitive human interface to a scanning tunnelling microscope: observation of parity oscillations for a single atomic chain

• Sumit Tewari,
• Jacob Bakermans,
• Christian Wagner,
• Federica Galli and
• Jan M. van Ruitenbeek

Beilstein J. Nanotechnol. 2019, 10, 337–348, doi:10.3762/bjnano.10.33

• one-dimensional (1D) systems and are known to be formed only in pure metals such as Au, Pt and Ir. They have been studied by collecting large amounts of statistics using mechanically controlled break junction (MCBJ) [8][30] and scanning tunnelling microscope break junction (STMBJ) [31] techniques

Nitrous oxide as an effective AFM tip functionalization: a comparative study

• Taras Chutora,
• Bruno de la Torre,
• Pingo Mutombo,
• Jack Hellerstedt,
• Jaromír Kopeček,
• Pavel Jelínek and
• Martin Švec

Beilstein J. Nanotechnol. 2019, 10, 315–321, doi:10.3762/bjnano.10.30

• with exposures of 0.5–1.7 L. AFM measurements were performed with a qPlus sensor (resonance frequency ca. 30 kHz; k ≈ 1800 N/m), using an oscillation amplitude of 50 pm. Prior to functionalization, the Pt tip was repeatedly indented into the Au(111) substrate several nanometers deep for sharpening and

A Ni(OH)₂ nanopetals network for high-performance supercapacitors synthesized by immersing Ni nanofoam in water

• Donghui Zheng,
• Man Li,
• Yongyan Li,
• Chunling Qin,
• Yichao Wang and
• Zhifeng Wang

Beilstein J. Nanotechnol. 2019, 10, 281–293, doi:10.3762/bjnano.10.27

• . Finally, the dispersed materials were dripped on copper mesh supported carbon film. Electrochemical measurements The electrochemical tests of the Ni(OH)2/Ni-NF/MG electrodes were carried out in a standard three-electrode cell. The Ni(OH)2/Ni-NF/MG composites, a Pt net, and a Ag/AgCl electrode were

Nanoporous water oxidation electrodes with a low loading of laser-deposited Ru/C exhibit enhanced corrosion stability

• Sandra Haschke,
• Dmitrii Pankin,
• Vladimir Mikhailovskii,
• Maïssa K. S. Barr,
• Adriana Both-Engel,
• Alina Manshina and
• Julien Bachmann

Beilstein J. Nanotechnol. 2019, 10, 157–167, doi:10.3762/bjnano.10.15

• limited by its significant dissolution (corrosion) at high anodic potential over the whole pH range (Figure 2) [10][11][12]. One strategy to address this limitation has involved mixing metallic Ru (or its oxides) with other solids (such as Ir [13][14][15][16][17][18], Ta [19], or Pt [20], TiO2 [21], Ni

• been reported on siliceous supports) [23][24]. The areal loadings are as low as the lowest values found in the literature (amorphous RuO2 with 49 µg cm−2 [45], mixed Ru–Pt catalyst with 15–35 µg cm−2 [20], and RuO2 nanoparticles with 49 µg cm−2) [46]. Chemical characterization of nanostructured Ru/C

Sputtering of silicon nanopowders by an argon cluster ion beam

• Xiaomei Zeng,
• Vasiliy Pelenovich,
• Zhenguo Wang,
• Wenbin Zuo,
• Sergey Belykh,
• Alexander Tolstogouzov,
• Dejun Fu and
• Xiangheng Xiao

Beilstein J. Nanotechnol. 2019, 10, 135–143, doi:10.3762/bjnano.10.13

• surface morphology, with preferable erosion of hills as compared with valleys [6], which also results in the smoothing of the surface [7]. Sputtering by an argon cluster beam has been studied for many pure metals (Cu, Ag, Au, W, Pt, Ni) and their alloys, semiconductors (Si and SiC), and insulators (SiO2

Wet chemistry route for the decoration of carbon nanotubes with iron oxide nanoparticles for gas sensing

• Hussam M. Elnabawy,
• Juan Casanova-Chafer,
• Badawi Anis,
• Mostafa Fedawy,
• Mattia Scardamaglia,
• Carla Bittencourt,
• Ahmed S. G. Khalil,
• Eduard Llobet and
• Xavier Vilanova

Beilstein J. Nanotechnol. 2019, 10, 105–118, doi:10.3762/bjnano.10.10

• layer were connected to a printed circuit board (PCB) using platinum wires. Those wires were attached to the heaters and CNT layers using silver paste that was cured in an oven at 120 °C for 30 minutes. To connect the Pt wires to the PCB we used tin wire and a soldering iron. Wire bonded sensors ready

Amorphous Ni_xCo_yP-supported TiO₂ nanotube arrays as an efficient hydrogen evolution reaction electrocatalyst in acidic solution

• Yong Li,
• Peng Yang,
• Bin Wang and
• Zhongqing Liu

Beilstein J. Nanotechnol. 2019, 10, 62–70, doi:10.3762/bjnano.10.6

• (ECSA). In 0.5 mol L−1 H2SO4 electrolyte, the NixCoyP/TNAs (x = 3.84, y = 0.78) demonstrated an ECSA value of 52.1 mF cm−2, which is 3.8 times that of Ni–P/TNAs (13.7 mF cm−2). In a two-electrode system with a Pt sheet as the anode, the NixCoyP/TNAs presented a bath voltage of 1.92 V at 100 mA cm−2

• bottleneck for HER is the high overpotential associated with the process that takes place at a significant rate due to the high activation barrier and the sluggish multiple-proton-coupled electron transfer [4][5][6]. Noble metal Pt-based catalysts are widely used for HER to circumvent the overpotential

• our previous work [25][26]. In a three-electrode system, the TNAs act as the working electrode, Pt as the counter electrode, Ag/AgCl (saturated KCl) as the reference, and a constant voltage (−1.2 V vs Ag/AgCl) was applied to the system and the duration of the electrodeposition was 200 s. The

Electrolyte tuning in dye-sensitized solar cells with N-heterocyclic carbene (NHC) iron(II) sensitizers

• Mariia Karpacheva,
• Catherine E. Housecroft and
• Edwin C. Constable

Beilstein J. Nanotechnol. 2018, 9, 3069–3078, doi:10.3762/bjnano.9.285

• Pt counter-electrodes were combined using thermoplast hot-melt sealing foil (Solaronix, Test Cell Gaskets, made from Meltonix 1170-60 sealing film, 60 microns thick) by heating while pressing them together. The electrolyte was introduced into the DSC by vacuum backfilling through a hole drilled in

Electrostatic force microscopy for the accurate characterization of interphases in nanocomposites

• Diana El Khoury,
• Richard Arinero,
• Jean-Charles Laurentie,
• Mikhaël Bechelany,
• Michel Ramonda and
• Jérôme Castellon

Beilstein J. Nanotechnol. 2018, 9, 2999–3012, doi:10.3762/bjnano.9.279

• AFM (Bruker, previously Veeco, EnviroscopeTM). The probe consisted of a metal covered tip (µmasch: HQ:NSC18/Pt) supported by a cantilever electrically connected to a metallic sample holder and biased at an electrical potential. AC-biased EFM (ω = 100π rad) was employed in the double-pass configuration