Facile chemical routes to mesoporous silver substrates for SERS analysis

• Elina A. Tastekova,
• Alexander Y. Polyakov,
• Anastasia E. Goldt,
• Alexander V. Sidorov,
• Alexandra A. Oshmyanskaya,
• Irina V. Sukhorukova,
• Dmitry V. Shtansky,
• Wolgang Grünert and
• Anastasia V. Grigorieva

Beilstein J. Nanotechnol. 2018, 9, 880–889, doi:10.3762/bjnano.9.82

• from a 0.1 M silver nitrate solution in the presence of poly(vinyl pyrrolidone) (PVP, Mw ≈40000 kDa). The Ag/PVP molar ratio was varied to optimize the phase composition and micromorphology of the product. The microstructure of the products varied with the molar ratio of the reactants (Figure 1a,b). A

• procedure reported by Lyu et al. [26]. Briefly, 0.05 g of crystalline silver nitrate (Carl Roth GmbH, ≥99%, Ph.Eur., extra pure) was dissolved in 210 mL of 0.2 M ammonium nitrate NH4NO3 aqueous solution. PVP solution was added slowly in the PVP monomeric unit/silver at atomic ratios of 5:1 or 10:1. The

Towards the third dimension in direct electron beam writing of silver

• Katja Höflich,
• Jakub Mateusz Jurczyk,
• Katarzyna Madajska,
• Maximilian Götz,
• Luisa Berger,
• Carlos Guerra-Nuñez,
• Caspar Haverkamp,
• Iwona Szymanska and
• Ivo Utke

Beilstein J. Nanotechnol. 2018, 9, 842–849, doi:10.3762/bjnano.9.78

• of silver 2,2-dimethylbutyrate, carboxylic acid and potassium nitrate were suspended in a water–ethanol solution, heated up to 40 °C and stirred, followed by the addition of silver nitrate. Silver pentafluoropropionate was synthesized by the reaction of fluorinated carboxylic acid and silver

Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity

• Mengyuan Zhang,
• Jiaqian Qin,
• Pengfei Yu,
• Bing Zhang,
• Mingzhen Ma,
• Xinyu Zhang and
• Riping Liu

Beilstein J. Nanotechnol. 2018, 9, 789–800, doi:10.3762/bjnano.9.72

• ability as compared to pure BiOI and ZnO, which could be attributed to the synergistic effects of higher specific area and the enhanced separation efficiency of photoinduced electron–hole pairs. Experimental Chemicals Zinc acetate (Zn(CH3COO)2·2H2O), bismuth nitrate (Bi(NO3)3·5H2O), potassium iodine (KI

A review of carbon-based and non-carbon-based catalyst supports for the selective catalytic reduction of nitric oxide

• Shahreen Binti Izwan Anthonysamy,
• Syahidah Binti Afandi,
• Mehrnoush Khavarian and
• Abdul Rahman Bin Mohamed

Beilstein J. Nanotechnol. 2018, 9, 740–761, doi:10.3762/bjnano.9.68

• Equation 4 [20]. Fast SCR and standard SCR can be distinguished according to the formation of NO2. In fast SCR, nitrous acid (HNO2) and nitric acid (HNO3) are formed from the dimerisation of NO2 [2]. Then, an ammonium nitrate (H4NNO3) intermediate is formed when NH3 reacts with HNO3 and subsequently

Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation

• Ashish Kumar,
• Christian Schuerings,
• Suneel Kumar,
• Ajay Kumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2018, 9, 671–685, doi:10.3762/bjnano.9.62

• pollutants from water very effectively. Experimental Materials Both titanium diisopropoxide bis(acetylacetonate) and dicyandiamide were purchased from Sigma-Aldrich, India. Calcium nitrate (Ca(NO3)2·4H2O), acrylamide and D-glucose were supplied by MP Biomedicals, India. Ammonia solution (NH3 about 25

Fabrication and photoactivity of ionic liquid–TiO₂ structures for efficient visible-light-induced photocatalytic decomposition of organic pollutants in aqueous phase

• Anna Gołąbiewska,
• Marta Paszkiewicz-Gawron,
• Aleksandra Sadzińska,
• Wojciech Lisowski,
• Ewelina Grabowska,
• Adriana Zaleska-Medynska and
• Justyna Łuczak

Beilstein J. Nanotechnol. 2018, 9, 580–590, doi:10.3762/bjnano.9.54

• -tetradecylimidazolium chloride [TDMIM][Cl] were purchased from Ionic Liquids Technologies GmbH. Ammonium oxalate, silver nitrate (≥99%), benzoquinone and tert-butyl alcohol from Sigma-Aldrich were used as scavengers. Photocatalyst preparation TiO2 was modified by ILs using a solvothermal method. First of all, the

Ultralight super-hydrophobic carbon aerogels based on cellulose nanofibers/poly(vinyl alcohol)/graphene oxide (CNFs/PVA/GO) for highly effective oil–water separation

• Zhaoyang Xu,
• Huan Zhou,
• Sicong Tan,
• Xiangdong Jiang,
• Weibing Wu,
• Jiangtao Shi and
• Peng Chen

Beilstein J. Nanotechnol. 2018, 9, 508–519, doi:10.3762/bjnano.9.49

• (H2O2, 30%), potassium permanganate (KMnO4), concentrated sulfuric acid (H2SO4, 98%), hydrochloric acid (HCl), sodium nitrate (NaNO3), sodium chlorite (NaClO2), phosphorus pentoxide (P2O5), potassium persulfate (K2S2O8) and ammonium hydroxide (NH3·H2O) were purchased from Nanjing Chemical Reagent Co

Colloidal solution of silver nanoparticles for label-free colorimetric sensing of ammonia in aqueous solutions

• Alessandro Buccolieri,
• Antonio Serra,
• Gabriele Giancane and
• Daniela Manno

Beilstein J. Nanotechnol. 2018, 9, 499–507, doi:10.3762/bjnano.9.48

• concentration range of 0.5–200 ppm. Finally, the silver ions run out and the rate of nucleation goes into saturation. Experimental Materials Silver nitrate (AgNO3, 99%), α-D-glucose (C6H12C6, 99.99%), sucralose (C12H19Cl3O8, 98%) and ammonia (30% solution) were purchased from Sigma-Aldrich and used without

Kinetics of solvent supported tubule formation of Lotus (Nelumbo nucifera) wax on highly oriented pyrolytic graphite (HOPG) investigated by atomic force microscopy

• Sujit Kumar Dora,
• Kerstin Koch,
• Wilhelm Barthlott and
• Klaus Wandelt

Beilstein J. Nanotechnol. 2018, 9, 468–481, doi:10.3762/bjnano.9.45

• may suggest that salts like ammonium-nitrate or -sulfate do not seem to interact with wax molecules at all and, hence, have no effect on tubule growth rate or orientation. But a too low solubility of these two salts in chloroform (dipole moment 1.15 D) in order to expect any influence cannot be

Influence of the preparation method on the photocatalytic activity of Nd-modified TiO₂

• Patrycja Parnicka,
• Paweł Mazierski,
• Tomasz Grzyb,
• Wojciech Lisowski,
• Ewa Kowalska,
• Bunsho Ohtani,
• Adriana Zaleska-Medynska and
• Joanna Nadolna

Beilstein J. Nanotechnol. 2018, 9, 447–459, doi:10.3762/bjnano.9.43

• different scavengers (Figure 10). Silver nitrate was used as electron scavenger, ammonium oxalate as hole scavenger, benzoquinone for O2•− and tert-butanol for •OH radicals. After 60 min of visible light irradiation in the presence of SHT photocatalyst, the degradation rate declined from 0.31 to 0.30

• μmol·dm−1·min−1 due to addition of ammonium oxalate and tert-butanol (Table 4). While, after the addition of silver nitrate and benzoquinone, the degradation rate decreased from 0.31 to 0.12 and 0.22 μmol·dm−1·min−1, respectively, suggesting that photogenerated electrons and superoxide radicals are the

• , respectively) compared to the system without scavengers (0.62 μmol·dm−1·min−1), suggesting a limited role played by holes in the photocatalytic process. The addition of silver nitrate and benzoquinone significantly reduced the phenol degradation rate (from 0.62 to 0.15 and 0.21 μmol·dm−1·min−1, respectively

Blister formation during graphite surface oxidation by Hummers’ method

• Olga V. Sinitsyna,
• Georgy B. Meshkov,
• Anastasija V. Grigorieva,
• Alexander A. Antonov,
• Inna G. Grigorieva and
• Igor V. Yaminsky

Beilstein J. Nanotechnol. 2018, 9, 407–414, doi:10.3762/bjnano.9.40

• Offeman, in which graphite is treated with a mixture of concentrated sulfuric acid, sodium nitrate, and potassium permanganate and then washed with water [8]. Traditionally, HOPG is used as a model material to study the physical and chemical processes occurring on graphite surfaces [9]. HOPG consists of

• provided by Optigraph GmbH (Germany). Samples of HAPG with a size of ≈10 × 10 mm2 were cleaved before the experiment. Then, an oxidation mixture was prepared consisting of 5 mg of sodium nitrate, 30 mg of potassium permanganate, and 230 μL of concentrated sulfuric acid (obtained from Sigma Tec). 10 μL of

Dielectric properties of a bisimidazolium salt with dodecyl sulfate anion doped with carbon nanotubes

• Doina Manaila Maximean,
• Viorel Cîrcu and
• Constantin Paul Ganea

Beilstein J. Nanotechnol. 2018, 9, 164–174, doi:10.3762/bjnano.9.19

• dropwise to a solution of compound 2 (2 g, 3.0 mmol) in dichloromethane (50 mL). The mixture was stirred at room temperature for 1 h after which 100 mL of deionised water was added. The organic layer was separated and washed repeatedly with water until no reaction with silver nitrate for Br− was noticed

Gas-sensing behaviour of ZnO/diamond nanostructures

• Marina Davydova,
• Alexandr Laposa,
• Jiri Smarhak,
• Alexander Kromka,
• Neda Neykova,
• Josef Nahlik,
• Jiri Kroutil,
• Jan Drahokoupil and
• Jan Voves

Beilstein J. Nanotechnol. 2018, 9, 22–29, doi:10.3762/bjnano.9.4

• hydrothermal synthesis process. The synthesis was conducted in an equimolar aqueous solution containing zinc nitrate hexahydrate (Zn(NO3)2·6H2O) and hexamethylenetetramine (C6H12N4). During the synthesis a temperature of 90 °C was maintained for 3 h. The experimental procedure has been described in detail in

Facile synthesis of silver/silver thiocyanate (Ag@AgSCN) plasmonic nanostructures with enhanced photocatalytic performance

• Xinfu Zhao,
• Dairong Chen,
• Abdul Qayum,
• Bo Chen and
• Xiuling Jiao

Beilstein J. Nanotechnol. 2017, 8, 2781–2789, doi:10.3762/bjnano.8.277

• stability compared to the previously reported silver halogen plasma catalyst, which make it more suitable for practical application. Experimental Chemicals Silver nitrate (AgNO3, Shanghai Chemical Co.) and ammonium thiocyanate (NH4SCN, Tianjin Reagent Co.) were used as precursors for the synthesis of silver

One-step chemical vapor deposition synthesis and supercapacitor performance of nitrogen-doped porous carbon–carbon nanotube hybrids

• Egor V. Lobiak,
• Lyubov G. Bulusheva,
• Ekaterina O. Fedorovskaya,
• Yury V. Shubin,
• Pavel E. Plyusnin,
• Pierre Lonchambon,
• Boris V. Senkovskiy,
• Zinfer R. Ismagilov,
• Emmanuel Flahaut and
• Alexander V. Okotrub

Beilstein J. Nanotechnol. 2017, 8, 2669–2679, doi:10.3762/bjnano.8.267

• works devoted to one-step formation of porous carbon–CNT hybrids for energy storage applications. Lei et al. have reported the CCVD synthesis of nitrogen-doped ordered mesoporous carbon and multiwalled CNTs (MWCNTs) with the use of a silica SBA-15 template impregnated by iron nitrate [14

Patterning of supported gold monolayers via chemical lift-off lithography

• Liane S. Slaughter,
• Kevin M. Cheung,
• Sami Kaappa,
• Huan H. Cao,
• Qing Yang,
• Thomas D. Young,
• Andrew C. Serino,
• Sami Malola,
• Jana M. Olson,
• Stephan Link,
• Hannu Häkkinen,
• Anne M. Andrews and
• Paul S. Weiss

Beilstein J. Nanotechnol. 2017, 8, 2648–2661, doi:10.3762/bjnano.8.265

• , Ithaca, NY, USA) for 40 s and contacted with SAMs. The stamps were removed from Au substrates after 2 h. The substrates were then treated with 20 mM iron(III) nitrate and 30 mM thiourea for 10–15 min to etch the Au selectively from the exposed regions. Fabricating flat poly(dimethylsiloxane) stamps The

The role of ligands in coinage-metal nanoparticles for electronics

• Ioannis Kanelidis and
• Tobias Kraus

Beilstein J. Nanotechnol. 2017, 8, 2625–2639, doi:10.3762/bjnano.8.263

• silver nitrate in the presence of poly(vinylpyrrolidone) (PVP, Figure 2) and sodium bromide. The nanobars formed when bromide ions etched the multiply twinned seeds, promoted the formation of single crystal seeds, and initiated anisotropic growth [68]. Longer silver nanowires grew from multiply twinned

• nanoparticles by the reduction of silver nitrate in the presence of PVP. The twin boundaries served as active sites for the addition of silver atoms as the strong interaction between PVP and the sides of the initially formed nanorod allowed preferential diffusion of the silver atoms to the ends of the nanorods

Synthesis of [{AgO₂CCH₂OMe(PPh₃)}_n] and theoretical study of its use in focused electron beam induced deposition

• Jelena Tamuliene,
• Julian Noll,
• Peter Frenzel,
• Tobias Rüffer,
• Alexander Jakob,
• Bernhard Walfort and
• Heinrich Lang

Beilstein J. Nanotechnol. 2017, 8, 2615–2624, doi:10.3762/bjnano.8.262

• hydride and then from P2O5. Dichloromethane (95%) and diethyl ether (99%) were dried with a solvent purification system (MB SPS-800, MBraun). Silver(I) nitrate (99%), methoxyacetic acid (97%), triethylamine (99%), triphenylphosphine (99%) were obtained from commercial suppliers and used without further

• . Data have been deposited with the Cambridge Structural Database under CCDC 1552018. Synthesis of [{AgO2CCH2OMe}n] (1) [11]. Silver(I) nitrate (0.5 g (2.94 mmol)) was dissolved in a mixture of 20 mL of ethanol and 0.25 mL of acetonitrile at 25 °C. To this solution a mixture of 0.26 g (2.89 mmol, 0.22 mL

Synthesis of metal-fluoride nanoparticles supported on thermally reduced graphite oxide

• Alexa Schmitz,
• Kai Schütte,
• Vesko Ilievski,
• Juri Barthel,
• Laura Burk,
• Rolf Mülhaupt,
• Junpei Yue,
• Bernd Smarsly and
• Christoph Janiak

Beilstein J. Nanotechnol. 2017, 8, 2474–2483, doi:10.3762/bjnano.8.247

• with sodium nitrate, potassium permanganate and sulfuric acid followed by thermal reduction through rapid heating under nitrogen to 300–1000 °C [5], yielding thermally reduced graphite oxide (TRGO) as a graphene-type material (Scheme S1, Supporting Information File 1) [6]. The thermal reduction results

Fabrication of CeO₂–MO_x (M = Cu, Co, Ni) composite yolk–shell nanospheres with enhanced catalytic properties for CO oxidation

• Ling Liu,
• Jingjing Shi,
• Hongxia Cao,
• Ruiyu Wang and
• Ziwu Liu

Beilstein J. Nanotechnol. 2017, 8, 2425–2437, doi:10.3762/bjnano.8.241

• nanostructures for a broad range of technical applications. Experimental Materials Cerium(III) nitrate hexahydrate (Ce(NO3)3·6H2O), concentrated nitric acid (HNO3, 68%), diethylene glycol (DEG), acetone, copper(II) acetate monohydrate (Cu(CH3COO)2·H2O), nickel(II) acetate tetrahydrate (Ni(CH3COO)2·4H2O), cobalt

Tailoring the nanoscale morphology of HKUST-1 thin films via codeposition and seeded growth

• Landon J. Brower,
• Lauren K. Gentry,
• Amanda L. Napier and
• Mary E. Anderson

Beilstein J. Nanotechnol. 2017, 8, 2307–2314, doi:10.3762/bjnano.8.230

• , MO, USA). The DMSO was purged with nitrogen and passed through columns of molecular sieves. Copper(II) nitrate hemi(pentahydrate) (ACS grade) and copper(II) acetate monohydrate were received from Fisher Scientific (Fair Lawn, NJ, USA). Absolute, anhydrous ethyl alcohol (200 proof, ACS/USP grade) was

• formed the foundational anchor for the framework. Once removed from solution, the sample was rinsed thoroughly with ethanol and dried with nitrogen gas. Codeposition SurMOF formation: The codeposition solution was prepared, consisting of 0.53 M copper nitrate and 0.27 M TMA in DMSO. This concentration

In situ controlled rapid growth of novel high activity TiB₂/(TiB₂–TiN) hierarchical/heterostructured nanocomposites

• Jilin Wang,
• Hejie Liao,
• Yuchun Ji,
• Fei Long,
• Yunle Gu,
• Zhengguang Zou,
• Weimin Wang and
• Zhengyi Fu

Beilstein J. Nanotechnol. 2017, 8, 2116–2125, doi:10.3762/bjnano.8.211

• reaction, while Equation 13 is an endothermic reaction. The standard enthalpies of Equation 12 and Equation 13 are calculated as −15.88 kJ/(g TiB2) and 5.89 kJ/(g TiB2), respectively. Besides, ammonium nitrate and nitrogen are applied as the nitrogen source. Finally, the whole reaction of B2O3/TiO2/Mg/KBH4

Synthesis and characterization of noble metal–titania core–shell nanostructures with tunable shell thickness

• Bartosz Bartosewicz,
• Marta Michalska-Domańska,
• Malwina Liszewska,
• Dariusz Zasada and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2017, 8, 2083–2093, doi:10.3762/bjnano.8.208

• the reduction of silver nitrate with hydroxylamine hydrochloride [50][51]. In both cases, relatively monodisperse spherical or quasi-spherical metal NPs with a mean particle diameter of around 100 nm were obtained (Table 1, Figure 1 and Figure S1, Supporting Information File 1). Initially, we also

• /w aq. soln.) and silver nitrate (99.9%) were purchased from Alfa Aesar. Ethanol (99.8%) and acetonitrile (99.5%) were purchased from Avantor Performance Materials Poland. Nitric acid (65% w/w aq. soln.), hydrofluoric acid (40% w/w aq. soln.) and sodium hydroxide (>99%) were purchased from Chempur

• aqueous solution of silver nitrate (1.1 mM) were stirred at room temperature. 10 mL of solution containing hydroxylamine hydrochloride (25 mM) and sodium hydroxide (0.1 w/w %) were added. The reaction was completed within a few seconds, which was indicated by a change of solution color to milky yellow. In

A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process

• Peter Krauß,
• Jörg Engstler and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2017, 8, 2017–2025, doi:10.3762/bjnano.8.202

• [12][13][30][38]. For transferring the graphene layer, the copper substrate is dissolved in a Faradaic reaction with aqueous etchants such as iron(III) chloride [25][28], iron(III) nitrate [22][23] or ammonium persulfate [26][27]. Though all of these etchants are suitable oxidizing agents for

Enhancement of mechanical and electrical properties of continuous-fiber-reinforced epoxy composites with stacked graphene

• Naum Naveh,
• Olga Shepelev and
• Samuel Kenig

Beilstein J. Nanotechnol. 2017, 8, 1909–1918, doi:10.3762/bjnano.8.191

• exfoliating graphite treated by a mixture of H2SO4/HNO3/KMnO4 at a ratio of 1:9:3:0.44 over an immersing time of 150 min in formic acid [10]. Intercalation with 98% HNO3 followed by hydrolysis resulted in the the formation of graphite nitrate with negligible damage to the sp2 graphite lattice. An interlayer