Nanocrystalline ZrO₂ and Pt-doped ZrO₂ catalysts for low-temperature CO oxidation

• Amit Singhania and
• Shipra Mital Gupta

Beilstein J. Nanotechnol. 2017, 8, 264–271, doi:10.3762/bjnano.8.29

• industrial applications. The above method involves combustion of an aqueous solution of metal nitrates and a fuel (glycine [32], citric acid [33], sucrose [4] and hexamethylenetetramine [34]). The combustion reaction is an exothermic redox reaction that takes place between metal nitrate and the fuel

• the used chemicals for the synthesis purpose were used as such with no further purification. Zirconyl nitrate hexahydrate (Fischer Scientific), hexachloroplatinic acid hexahydrate (Alfa Aesar), and urea (Merck) were used as Zr, Pt precursors and fuel. The ZrO2 nanoparticles were prepared by solution

• combustion. For the synthesis of ZrO2 nanoparticles, a small amount of deionized water (10–15 mL) was added to a mixture zirconyl nitrate and urea. The ratio of zirconyl nitrate and urea was maintained at 5:1. The mixture of zirconyl nitrate, urea and deionized water was stirred vigorously which resulted

Microfluidic setup for on-line SERS monitoring using laser induced nanoparticle spots as SERS active substrate

• Oana-M. Buja,
• Ovidiu D. Gordan,
• Nicolae Leopold,
• Andreas Morschhauser,
• Jörg Nestler and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2017, 8, 237–243, doi:10.3762/bjnano.8.26

• continuous flow of a mixture of silver nitrate or gold chloride and sodium citrate. The described microfluidic setup enables within a few minutes the monitoring of several processes: the synthesis of the SERS active spot, MG adsorption to the metal surface, detection of the analyte when saturation of the

• detection of the analyte, as shown schematically in Figure 1a. SERS monitoring of MG adsorbed on silver nanoparticle spots The synthesis of the SERS active silver nanoparticles spot was carried out by laser-induced spot synthesis [24] inside the glass capillary. The silver nitrate and sodium citrate

• beam (λ = 514.7 nm) on 5 μL of silver/citrate mixture for 60 s. The scanning electron microscopy (SEM) image was obtained with a FEI NovaNanoSEM 200 scanning electron microscope with a working distance of 5.9 mm. The following chemical reagents were used: silver nitrate (Alfa Aesar), hydrogen

Intercalation and structural aspects of macroRAFT agents into MgAl layered double hydroxides

• Dessislava Kostadinova,
• Ana Cenacchi Pereira,
• Muriel Lansalot,
• Franck D’Agosto,
• Elodie Bourgeat-Lami,
• Fabrice Leroux,
• Christine Taviot-Guého,
• Sylvian Cadars and
• Vanessa Prevot

Beilstein J. Nanotechnol. 2016, 7, 2000–2012, doi:10.3762/bjnano.7.191

• a basal spacing of 0.85 nm, a net shift of the 00l harmonic reflections to lower values of 2θ below 20° was observed for the LDH-macroRAFT compounds, which is consistent with the replacement of nitrate ions by larger anionic species ensuring the layer surface charge neutralization. For PAA49-CTPPA

• intensity decrease of the nitrate vibration band at 1350 cm−1 (Figure 4), and the increasing intensities of new vibrations in both the 2961–2877 cm−1 region (νCH3, νCH2, νCH) and the 1750–1150 cm−1 region (νC–O, νC=O). For the PAA49-CTPPA-intercalated LDH, the shift of the OH vibration band at 3346 cm−1 in

• comparison with the precursor phase could traduce a modification of the hydrogen bond network in the interlayer domain due to macroRAFT polymer intercalation evidenced by the presence of the typical vibration of the carboxylate (νas and νs). In the case of P(AA-stat-BA)-CTPPA copolymers, the nitrate

Controlled supramolecular structure of guanosine monophosphate in the interlayer space of layered double hydroxide

• Gyeong-Hyeon Gwak,
• Istvan Kocsis,
• Yves-Marie Legrand,
• Mihail Barboiu and
• Jae-Min Oh

Beilstein J. Nanotechnol. 2016, 7, 1928–1935, doi:10.3762/bjnano.7.184

• . Experimental Materials Magnesium nitrate hexahydrate (Mg(NO3)2·6H2O) and aluminum nitrate nonahydrate (Al(NO3)3·9H2O) were purchased from Sigma-Aldrich (St. Louis, USA). Guanosine 5'-monophosphate disodium salt hydrate (C10H12N5Na2O8P·xH2O) was purchased from Tokyo Chemical Industry Co., Ltd. (Tokyo, Japan

In situ formation of reduced graphene oxide structures in ceria by combined sol–gel and solvothermal processing

• Jingxia Yang,
• Johannes Ofner,
• Bernhard Lendl and
• Ulrich Schubert

Beilstein J. Nanotechnol. 2016, 7, 1815–1821, doi:10.3762/bjnano.7.174

• observed in the Raman spectra (Supporting Information File 1, Figure S1) when (1) H2O was used instead of EtOH for solvothermal treatment or (2) cerium ammonium nitrate (NH4)2[Ce(NO3)6] was used as precursor instead of cerium tert-butoxide (identical preparation conditions in all cases). We did not check

Role of RGO support and irradiation source on the photocatalytic activity of CdS–ZnO semiconductor nanostructures

• Suneel Kumar,
• Rahul Sharma,
• Vipul Sharma,
• Gurunarayanan Harith,
• Vaidyanathan Sivakumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2016, 7, 1684–1697, doi:10.3762/bjnano.7.161

• support and irradiation source on the photocatalytic activity of CdS–ZnO nanostructures has been elucidated. Experimental Materials For the synthesis of GO graphite powder (crystalline, −300 mesh, 99%) was purchased from Alfa Aesar, whereas sodium nitrate (NaNO3), sulfuric acid (H2SO4), potassium

Hydrophilic silver nanoparticles with tunable optical properties: application for the detection of heavy metals in water

• Paolo Prosposito,
• Federico Mochi,
• Erica Ciotta,
• Mauro Casalboni,
• Fabio De Matteis,
• Iole Venditti,
• Laura Fontana,
• Giovanna Testa and
• Ilaria Fratoddi

Beilstein J. Nanotechnol. 2016, 7, 1654–1661, doi:10.3762/bjnano.7.157

• nitrate as precursor molecules, hydrophilic thiol (3-mercapto-1-propanesulfonic acid sodium salt, 3MPS) and sodium borohydride as capping and reducing agents, respectively. The AgNPs were characterized using techniques such as surface plasmon resonance (SPR) spectroscopy, dynamic light scattering (DLS

• procedure (synthesis b) for the synthesis of the AgNPs. In this case, the molar ratio between silver nitrate, sodium borohydride and 3-MPS was varied. The reaction was conducted at 3 °C and the final purification was avoided in order to prevent possible aggregation with a consequent broadening of the SPR

• the development of an analytical sensor system based on optical methods to detect metal ions in actual water samples. Experimental Materials and sample preparation Silver nitrate (AgNO3, Sigma-Aldrich, 99.5%), sodium borohydride (NaBH4, Sigma-Aldrich, 98%) and 3-mercapto-1-propanesulfonic acid sodium

An efficient recyclable magnetic material for the selective removal of organic pollutants

• Clément Monteil,
• Nathalie Bar,
• Agnès Bee and
• Didier Villemin

Beilstein J. Nanotechnol. 2016, 7, 1447–1453, doi:10.3762/bjnano.7.136

• of 1:2, in the presence of ammonium hydroxide solution (28%), at room temperature and under mechanical stirring. Then, a solution of iron(III) nitrate in concentrated nitric acid was added at 80 °C under stirring. After the removal of the supernatant, nanoparticles were washed with acetone and

Ammonia gas sensors based on In₂O₃/PANI hetero-nanofibers operating at room temperature

• Qingxin Nie,
• Zengyuan Pang,
• Hangyi Lu,
• Yibing Cai and
• Qufu Wei

Beilstein J. Nanotechnol. 2016, 7, 1312–1321, doi:10.3762/bjnano.7.122

• Qingxin Nie Zengyuan Pang Hangyi Lu Yibing Cai Qufu Wei Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, 214122 Wuxi, Jiangsu, China 10.3762/bjnano.7.122 Abstract Indium nitrate/polyvinyl pyrrolidone (In(NO3)3/PVP) composite nanofibers were synthesized via

• Industrial Co. Ltd of Tianjin. Indium nitrate hydrate, N,N-dimethylformamide (DMF), ethyl alcohol, aniline monomer (An), ammonium persulfate (APS), hydrochloric acid (HCl, 37%), ammonium hydroxide (NH4OH) and m-cresol were obtained from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). All chemicals

Mesoporous hollow carbon spheres for lithium–sulfur batteries: distribution of sulfur and electrochemical performance

• Anika C. Juhl,
• Artur Schneider,
• Boris Ufer,
• Torsten Brezesinski,
• Jürgen Janek and
• Michael Fröba

Beilstein J. Nanotechnol. 2016, 7, 1229–1240, doi:10.3762/bjnano.7.114

• cycle at C/50 rate can be ascribed to lithium nitrate decomposition at the cathode side [44]. The charge curve shows two plateaus at about 2.2 V and 2.4 V, indicating the reoxidation of lithium polysulfides to sulfur. Figure 8b presents data on the long term performance at C/5. As can be seen, the

• inside an argon-filled glovebox from MBraun. The electrolyte used was a solution of lithium bis(trifluoromethanesulfonyl)imide (Aldrich, 99.95%, 8 wt %), lithium nitrate (Merck, 99.995%, 4 wt %), 1,2-dimethoxyethane (Alfa Aesar, >99%, 44 wt %), and 1,3-dioxolane (Acros, 99.8%, 44 wt %). The volume of

Preparation of alginate–chitosan–cyclodextrin micro- and nanoparticles loaded with anti-tuberculosis compounds

• Albert Ivancic,
• Fliur Macaev,
• Fatma Aksakal,
• Veaceslav Boldescu,
• Serghei Pogrebnoi and
• Gheorghe Duca

Beilstein J. Nanotechnol. 2016, 7, 1208–1218, doi:10.3762/bjnano.7.112

• , 41400, Turkey 10.3762/bjnano.7.112 Abstract This paper describes the synthesis and application of alginate–chitosan–cyclodextrin micro- and nanoparticulate systems loaded with isoniazid (INH) and isoconazole nitrate (ISN) as antimycobacterial compounds. Preparation and morphology of the obtained

• cell walls [17], disorganizing their double lipid layer and increasing their penetrability for active compounds [18]. We propose the preparation of chitosane–alginate–cyclodextrin particles containing the antimycobacterial compounds isoniazid (INH) and isoconazole nitrate (ISN). INH (4

Voltammetric determination of polyphenolic content in pomegranate juice using a poly(gallic acid)/multiwalled carbon nanotube modified electrode

• Refat Abdel-Hamid and
• Emad F. Newair

Beilstein J. Nanotechnol. 2016, 7, 1104–1112, doi:10.3762/bjnano.7.103

• pomegranate juice without interference of ascorbic acid, fructose, potassium nitrate and barbituric acid. The obtained data were compared with the standard Folin–Ciocalteu spectrophotometric results. Keywords: electrochemical sensor; gallic acid; multiwalled carbon nanotubes; pomegranate juice; total

• amount of GA was taken with different amounts of AA. On increasing the concentration of AA to a 1000-fold excess, no influence on the GA response was observed. Moreover, interference from fructose, potassium nitrate and barbituric acid was studied. It was revealed that the response of GA exhibits no

Development of highly faceted reduced graphene oxide-coated copper oxide and copper nanoparticles on a copper foil surface

• Rebeca Ortega-Amaya,
• Yasuhiro Matsumoto,
• Andrés M. Espinoza-Rivas,
• Manuel A. Pérez-Guzmán and
• Mauricio Ortega-López

Beilstein J. Nanotechnol. 2016, 7, 1010–1017, doi:10.3762/bjnano.7.93

• . Their morphology and the inorganic predominant phase strongly depended on the annealing temperature. Experimental Materials Graphite flakes (+100 mesh), sodium nitrate (≥99%), potassium permanganate (≥99%) and hexane (≥99%) were purchased from Sigma-Aldrich. Sulfuric acid (95–98%) was obtained from

Templated green synthesis of plasmonic silver nanoparticles in onion epidermal cells suitable for surface-enhanced Raman and hyper-Raman scattering

• Marta Espina Palanco,
• Klaus Bo Mogensen,
• Marina Gühlke,
• Zsuzsanna Heiner,
• Janina Kneipp and
• Katrin Kneipp

Beilstein J. Nanotechnol. 2016, 7, 834–840, doi:10.3762/bjnano.7.75

• silver nitrate solution (10−3 M concentration from 99.9% pure AgNO3, Sigma-Aldrich Denmark A/S). After 20 h of incubation at room temperature and in darkness, the pieces were removed, rinsed with tap water and placed on a glass slide to dry for several hours, also in darkness. After drying, the samples

Selective photocatalytic reduction of CO₂ to methanol in CuO-loaded NaTaO₃ nanocubes in isopropanol

• Tianyu Xiang,
• Feng Xin,
• Jingshuai Chen,
• Yuwen Wang,
• Xiaohong Yin and
• Xiao Shao

Beilstein J. Nanotechnol. 2016, 7, 776–783, doi:10.3762/bjnano.7.69

• oxide (Ta2O5, 99.99%), sodium hydroxide (NaOH, 96%) and isopropanol (iPrOH, 99.9%) were purchased from Aladdin Industrial Corporation. Copper nitrate (Cu(NO3)2·3H2O, AR) was purchased from Tianjin Guangfu Chemical Reagent Company. All reagents were used as received without any further purification. The

Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour

• Saurav Kumar,
• Sudeshna Bagchi,
• Senthil Prasad,
• Anupma Sharma,
• Ritesh Kumar,
• Rishemjit Kaur,
• Jagvir Singh and
• Amol P. Bhondekar

Beilstein J. Nanotechnol. 2016, 7, 501–510, doi:10.3762/bjnano.7.44

• solution consisting of zinc nitrate and hexamine. This inverted growth scheme was preferred in order to avoid contamination effects due to sedimentation and to achieve a uniform growth pattern [35][36]. Further, the suspension of wild-type, photoactive bR was prepared with aqueous amphipol (A8-35) in a 1:5

• coating (Millman, single-stage coating unit) was performed at 3000 rpm for 20 s to obtain a thin film of ZnO nanoparticles. ZnO nanorod (ZnO-NR) synthesis ZnO-NRs were grown on the ZnO-TF substrate by the hydrothermal method [36][83]. Zinc nitrate hexahydrate (0.2 M) was used as a precursor salt and was

• dissolved in aqueous ethanol (30%). A separate equimolar solution of hexamethylenetetramine (HMT) was also prepared in aqueous ethanol (30%). These solutions were stirred for 30 min at 60 °C. The growth solution was obtained by slow titration of HMT solution against zinc nitrate solution [34]. The ZnO

Time-dependent growth of crystalline Au⁰-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

• Liz M. Rösken,
• Felix Cappel,
• Susanne Körsten,
• Christian B. Fischer,
• Andreas Schönleber,
• Sander van Smaalen,
• Stefan Geimer,
• Christian Beresko,
• Georg Ankerhold and
• Stefan Wehner

Beilstein J. Nanotechnol. 2016, 7, 312–327, doi:10.3762/bjnano.7.30

• used throughout this study were grown in 250 mL Erlenmeyer flasks containing 150 mL modified Bold's Basal Medium (BBM, pH 6.8) with 50% less nitrate and without vitamins [43][44][45]. The cultures were shaken continuously horizontally (Labworld Orbital Shaker 20) and placed in a temperature-controlled

Characterisation of thin films of graphene–surfactant composites produced through a novel semi-automated method

• Nik J. Walch,
• Alexei Nabok,
• Frank Davis and
• Séamus P. J. Higson

Beilstein J. Nanotechnol. 2016, 7, 209–219, doi:10.3762/bjnano.7.19

• first reported by Notley et al. [4]. This method was chosen for a number of reasons; firstly, it does not require the use of hazardous chemicals such as sodium nitrate, sulfuric acid, potassium permanganate and hydrazine hydrate, which are used in the oxidation of graphite to graphite oxide and the

Synthesis and applications of carbon nanomaterials for energy generation and storage

• Marco Notarianni,
• Jinzhang Liu,
• Kristy Vernon and
• Nunzio Motta

Beilstein J. Nanotechnol. 2016, 7, 149–196, doi:10.3762/bjnano.7.17

• acid (H2SO4), sodium nitrate (NaNO3), and potassium permanganate (KMnO4) [106]. Recently, Hummers-modified methods have been proposed in order to produce a higher fraction of well-oxidized hydrophilic carbon material with a more regular structure where the basal plane of the graphite is less disrupted

Controlled graphene oxide assembly on silver nanocube monolayers for SERS detection: dependence on nanocube packing procedure

• Martina Banchelli,
• Bruno Tiribilli,
• Roberto Pini,
• Luigi Dei,
• Paolo Matteini and
• Gabriella Caminati

Beilstein J. Nanotechnol. 2016, 7, 9–21, doi:10.3762/bjnano.7.2

• produces a large fraction of particle clusters with small interparticle distance, which generates an efficient hot spot distribution. Experimental Materials. Ethylene Glycol (EG, ≥99%) was obtained from Scharlab. Sodium sulfide nonahydrate, PVP (Mw = 55000), silver nitrate and GO solution (4 mg mL−1) were

• . Then, 0.175 mL of a 0.72 mg mL−1 sodium sulfide solution and 3.75 mL of a 20 mg mL−1 PVP solution in EG were subsequently added to the flask. The flask was thermostated for additional 10 min, until a temperature of 150 °C was again established. A silver nitrate solution (1.25 mL) in EG with a

Blue and white light emission from zinc oxide nanoforests

• Nafisa Noor,
• Luca Lucera,
• Thomas Capuano,
• Venkata Manthina,
• Alexander G. Agrios,
• Helena Silva and
• Ali Gokirmak

Beilstein J. Nanotechnol. 2015, 6, 2463–2469, doi:10.3762/bjnano.6.255

• sonication in ethanol, dried with nitrogen and spin-coated with a seed solution that was prepared by dissolving 0.0457 mg of zinc acetate dihydrate in 50 mL of ethanol. The samples were then baked at 350 °C for 30 min and then submersed in a water-based precursor solution containing 25 mM of zinc nitrate

Ultrastructural changes in methicillin-resistant Staphylococcus aureus induced by positively charged silver nanoparticles

• Dulce G. Romero-Urbina,
• Humberto H. Lara,
• J. Jesús Velázquez-Salazar,
• M. Josefina Arellano-Jiménez,
• Eduardo Larios,
• Anand Srinivasan,
• Jose L. Lopez-Ribot and
• Miguel José Yacamán

Beilstein J. Nanotechnol. 2015, 6, 2396–2405, doi:10.3762/bjnano.6.246

• widely known. Around the 1800s silver nitrate was commonly applied topically to treat burns and ulcerations or infected wounds, although its use declined following the introduction of antibiotics. Fox revived its use in the form of silver sulfadiazine, which is applied topically in burn therapy [23]. An

• + ion leaching. Therefore, the combination of all three species is more efficient in binding and lysing bacteria. Experimental Chemicals and Materials: Silver nitrate, AgNO3 (99.99%), was purchased from Sigma-Aldrich and used as received. Distilled water was purified using Whatman® 0.2 µm filters. A

• film for further analysis. The use of microwaves to synthesize silver nanoparticles has been shown to work in the presence of an eco-friendly reducing agent [54]. Silver nitrate can decompose into metallic silver, NO2 gas and O2 by the addition of heat as represented in Equation 1 [55]: In our study

Surfactant-controlled composition and crystal structure of manganese(II) sulfide nanocrystals prepared by solvothermal synthesis

• Elena Capetti,
• Anna M. Ferretti,
• Vladimiro Dal Santo and
• Alessandro Ponti

Beilstein J. Nanotechnol. 2015, 6, 2319–2329, doi:10.3762/bjnano.6.238

• –100 nm, l = 250–700 nm) were obtained [16]. The reaction of manganese(II) nitrate with elemental S in octadecylamine at 200 °C gave 50 nm α-MnS hexagons at high S concentration, whereas γ-MnS rods (d ≈ 50 nm) resulted at low S concentration [22]. The hydrothermal reaction of manganese(II) chloride

Optimized design of a nanostructured SPCE-based multipurpose biosensing platform formed by ferrocene-tethered electrochemically-deposited cauliflower-shaped gold nanoparticles

• Wicem Argoubi,
• Maroua Saadaoui,
• Sami Ben Aoun and
• Noureddine Raouafi

Beilstein J. Nanotechnol. 2015, 6, 1840–1852, doi:10.3762/bjnano.6.187

• Materials and apparatuses α-Lipoic acid (≥98%), 1-ferrocenylmethanol (97%), dimethylaminopyridine (DMAP) (99%), HAuCl4.3H2O (99.9%), dicyclohexylcarbodiimide (DCC) (99%), sodium nitrate (≥98%), human IgG (hIgG, ≥95%), polyclonal anti-human IgG antibody (α-hIgG), polyclonal anti-human IgG antibody (gIgG

Template-controlled mineralization: Determining film granularity and structure by surface functionality patterns

• Nina J. Blumenstein,
• Jonathan Berson,
• Stefan Walheim,
• Petia Atanasova,
• Johannes Baier,
• Joachim Bill and
• Thomas Schimmel

Beilstein J. Nanotechnol. 2015, 6, 1763–1768, doi:10.3762/bjnano.6.180

• concentration of 45 mM, and were prepared according to Gerstel et al. [26]. For the preparation of the mineralization solution, equal amounts of HMTA and histidine stock solutions were mixed. Afterwards, the zinc nitrate solution was added dropwise to obtain a ratio of [Zn2+]/[HMTA]/[His] of 1:1:1. The