Ultramicrosensors based on transition metal hexacyanoferrates for scanning electrochemical microscopy

• Maria A. Komkova,
• Angelika Holzinger,
• Andreas Hartmann,
• Alexei R. Khokhlov,
• Christine Kranz,
• Arkady A. Karyakin and
• Oleg G. Voronin

Beilstein J. Nanotechnol. 2013, 4, 649–654, doi:10.3762/bjnano.4.72

• (CN)63− ions tend to form insoluble precipitate in pure aqueous solutions. Therefore an excessive amount of supporting electrolyte (0.5 М KCl) was used during the deposition of Ni–HCF films. Deposition of Ni–HCF was performed by using CV as described elsewhere [20]. Every two cycles of PB deposition

• applied to the H2O2 generating gold electrode. In all control experiments a significant signal was not recorded. After the imaging experiments, the integrity of the film was confirmed by CV recorded in 0.1 M HCl/KCl. Conclusion Ultramicrosensors for the detection of hydrogen peroxide with increased

• [18]. The electrodeposition of nickel hexacyanoferrate (NiHCF) was carried out in a non-colloid solution containing 1 mM NiCl2 and 0.5 mM K3[Fe(CN)6] with an excessive amount of supporting electrolyte (0.1 M HCl and 0.5 M KCl), while cycling the electrode potential between 0 and 0.85 V at a scan rate

In situ monitoring magnetism and resistance of nanophase platinum upon electrochemical oxidation

• Eva-Maria Steyskal,
• Stefan Topolovec,
• Stephan Landgraf,
• Heinz Krenn and
• Roland Würschum

Beilstein J. Nanotechnol. 2013, 4, 394–399, doi:10.3762/bjnano.4.46

• sample served as the working electrode and was charged via the Pt wire contacted to the center of the sample. Porous carbon fabric and a commercial Ag/AgCl (sat. KCl) electrode (Radiometer Analytical) were used as counter and reference electrode, respectively. The electrical resistance was measured in a

Nanoscopic surfactant behavior of the porin MspA in aqueous media

• Ayomi S. Perera,
• Hongwang Wang,
• Tej B. Shrestha,
• Deryl L. Troyer and
• Stefan H. Bossmann

Beilstein J. Nanotechnol. 2013, 4, 278–284, doi:10.3762/bjnano.4.30

• Supporting Information File 1. PBS consists of 8.0 g NaCl, 0.20 g KCl, 1.44 g Na2HPO4 and 0.24 g KH2PO4 in 1 L H2O, pH 7.40. Geometric calculations based on the crystal structure of MspA [2]. TEM of vesicles formed from MspA on a carbon-coated 200-mesh copper grid. A: MspA vesicles formed in (5 × 10−5)× PBS

Photoelectrochemical and Raman characterization of In₂O₃ mesoporous films sensitized by CdS nanoparticles

• Mikalai V. Malashchonak,
• Sergey K. Poznyak,
• Eugene A. Streltsov,
• Anatoly I. Kulak,
• Olga V. Korolik and
• Alexander V. Mazanik

Beilstein J. Nanotechnol. 2013, 4, 255–261, doi:10.3762/bjnano.4.27

• Ag|AgCl|KCl (sat.) electrode as the reference electrode (+0.201 V versus SHE). The cell was controlled by a conventional programmable potentiostat. Photocurrent spectra were obtained by using a setup equipped with a high-intensity grating monochromator, a 1 kW xenon lamp and a slowly rotating light

Characterization and properties of micro- and nanowires of controlled size, composition, and geometry fabricated by electrodeposition and ion-track technology

• Maria Eugenia Toimil-Molares

Beilstein J. Nanotechnol. 2012, 3, 860–883, doi:10.3762/bjnano.3.97

• PET are typically achieved by using solutions of sodium hydroxide (various concentrations) for etching and a mixture of potassium chloride (KCl) and formic acid (HCOOH) for stopping [31][46]. Methanol can be added in different concentrations to the NaOH etchant to influence Vb. In the case of 30 µm

• monitored by chronoamperometric current–time (I–t) curves. In the two-electrode arrangement the potential Uc is applied between cathode and anode. In the three-electrode arrangement, reference electrodes such as saturated silver/silver chloride (Ag/AgCl/sat. KCl) and saturated calomel electrodes (SCE) are

• membranes (dpore = 450 nm, 107 cm−2) at 25 °C, in a solution consisting of 0.25 mol/L CuSO4·5H2O and 2 mol/L H2SO4, by applying different potentials ranging between −80 and −440 mV (versus Ag/AgCl/3 mol/L KCl provided with a Haber–Luggin capillary) [59]. 2 Composition and crystallinity of the nanowires

Paper modified with ZnO nanorods – antimicrobial studies

• Mayuree Jaisai,
• Sunandan Baruah and
• Joydeep Dutta

Beilstein J. Nanotechnol. 2012, 3, 684–691, doi:10.3762/bjnano.3.78

• mixed with phosphate buffer saline (PBS) solution (8 g NaCl, 0.2 g KCl, 1.44 g Na2HPO4, 0.24 g KH2PO4 in 1 L of distilled water) by a vortex mixer until the cells were homogeneously dispersed. The suspension was centrifuged at 4,000 rpm for 10 min and the supernatant discarded. These steps were repeated

Dipole-driven self-organization of zwitterionic molecules on alkali halide surfaces

• Laurent Nony,
• Franck Bocquet,
• Franck Para,
• Frédéric Chérioux,
• Eric Duverger,
• Frank Palmino,
• Vincent Luzet and
• Christian Loppacher

Beilstein J. Nanotechnol. 2012, 3, 285–293, doi:10.3762/bjnano.3.32

• zwitterionic molecules on ionic-crystal (100) template surfaces. The crystals chosen (NaCl, KCl, RbCl, and KBr) all show the same structure (face-centered cubic, or rock salt) and thus provide an identical quadratic pattern of alternating electric charges on the surface, but with a different lattice constant

• software [22]. Results and Discussion The topography image of ≈0.2 ML MSPS deposited on a clean KCl substrate surface is depicted in Figure 2a. MSPS diffuses to step edges and impurities and forms disordered amorphous islands, but with a more or less uniform height, and no formation of larger clusters or

• to the island boundaries. With the annealing cycle, we also observe a rearrangement of the KCl substrate surface, which will be discussed at the end of this section. For the moment we would just like to mention that the diffusion of MSPS, with its strong electric dipole, on an ionic surface can

Molecular-resolution imaging of pentacene on KCl(001)

• Julia L. Neff,
• Jan Götzen,
• Enhui Li,
• Michael Marz and
• Regina Hoffmann-Vogel

Beilstein J. Nanotechnol. 2012, 3, 186–191, doi:10.3762/bjnano.3.20

• National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki, Japan 10.3762/bjnano.3.20 Abstract The growth of pentacene on KCl(001) at submonolayer coverage was studied by dynamic scanning force microscopy. At coverages below one monolayer pentacene was found to arrange in islands with

• an upright configuration. The molecular arrangement was resolved in high-resolution images. In these images two different types of patterns were observed, which switch repeatedly. In addition, defects were found, such as a molecular vacancy and domain boundaries. Keywords: KCl; molecular growth

• of a functionalized tip [35]. In this work, we describe the arrangement of pentacene adsorbed on the KCl(001) single-crystal surface. For submonolayer coverage the molecules form islands with upright ordering. In molecularly resolved images of these islands two different molecular patterns are