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

• ; copper(II) oxide; core–shell; reduced graphene oxide; Introduction In the last years, graphene oxide (GO) and reduced graphene oxide (rGO) have emerged as suitable candidates to prepare graphene-based nanocomposites [1][2], including those based on GO/inorganic nanoparticles [3]. The opportunity to

Efficient electron-induced removal of oxalate ions and formation of copper nanoparticles from copper(II) oxalate precursor layers

• Kai Rückriem,
• Sarah Grotheer,
• Henning Vieker,
• Paul Penner,
• André Beyer,
• Armin Gölzhäuser and
• Petra Swiderek

Beilstein J. Nanotechnol. 2016, 7, 852–861, doi:10.3762/bjnano.7.77

• , Bielefeld University, D-33615 Bielefeld, Germany 10.3762/bjnano.7.77 Abstract Copper(II) oxalate grown on carboxy-terminated self-assembled monolayers (SAM) using a step-by-step approach was used as precursor for the electron-induced synthesis of surface-supported copper nanoparticles. The precursor

• material was deposited by dipping the surfaces alternately in ethanolic solutions of copper(II) acetate and oxalic acid with intermediate thorough rinsing steps. The deposition of copper(II) oxalate and the efficient electron-induced removal of the oxalate ions was monitored by reflection absorption

• evidence that nanoparticle formation is primarily controlled by the available amount of precursor. Keywords: copper(II) oxalate; electron-induced reactions; layer-by-layer deposition; nanoparticle formation; thin film; Introduction Electron-induced chemistry is a versatile approach to the fabrication of

Formation of pure Cu nanocrystals upon post-growth annealing of Cu–C material obtained from focused electron beam induced deposition: comparison of different methods

• Aleksandra Szkudlarek,
• Alfredo Rodrigues Vaz,
• Yucheng Zhang,
• Andrzej Rudkowski,
• Czesław Kapusta,
• Rolf Erni,
• Stanislav Moshkalev and
• Ivo Utke

Beilstein J. Nanotechnol. 2015, 6, 1508–1517, doi:10.3762/bjnano.6.156

• . The deposition process has been carried out at room temperature on two types of substrates: Si with a 200 nm top layer of SiO2 and copper TEM grids with holey carbon films. The beam energy was fixed to 25 keV. In this study bis(hexafluoroacetylacetonato)copper(II) [Cu(hfac)2, Cu(HC5O2F6)2] was used as

Growth evolution and phase transition from chalcocite to digenite in nanocrystalline copper sulfide: Morphological, optical and electrical properties

• Priscilla Vasthi Quintana-Ramirez,
• Ma. Concepción Arenas-Arrocena,
• José Santos-Cruz,
• Marina Vega-González,
• Omar Martínez-Alvarez,
• Víctor Manuel Castaño-Meneses,
• Laura Susana Acosta-Torres and
• Javier de la Fuente-Hernández

Beilstein J. Nanotechnol. 2014, 5, 1542–1552, doi:10.3762/bjnano.5.166

• received. The aqueous reaction: deionized water (10 MΩ·cm), thiourea (H2NCSNH2, Aldrich ≥99%), copper(II) sulfate pentahydrate (CuSO4·5H2O, Baker 99.3%), triethanolamine (TEA, C6H15NO3, Baker 99.8%), and sodium acetate (NaCOOCH3, Baker, 99.5%) Synthesis of nanocrystalline copper sulfide from organic

• aqueous solution In this reaction thiourea and copper(II) sulfate pentahydrate (CuSO4·5H2O) were the sulfur and copper precursors, respectively, and the TEA ligand was an intermediary in the reaction. The synthesis proceeded as follows: A three-necked reactor containing 440 mL of deionized water was

Antimicrobial properties of CuO nanorods and multi-armed nanoparticles against B. anthracis vegetative cells and endospores

• Pratibha Pandey,
• Merwyn S. Packiyaraj,
• Himangini Nigam,
• Gauri S. Agarwal,
• Beer Singh and
• Manoj K. Patra

Beilstein J. Nanotechnol. 2014, 5, 789–800, doi:10.3762/bjnano.5.91

• electrochemically synthesized product, P5, was nanometer-scaled powder of copper(II) oxide composed of highly branched nanoparticles [16]. Briefly, SEM data (Figure S2a, Supporting Information File 1) show that multi-armed nanoparticles were made of 500–1000 nm long radiating nano-spicules with a Cu/O ratio of

Cyclodextrin-poly(ε-caprolactone) based nanoparticles able to complex phenolphthalein and adamantyl carboxylate

• Daniela Ailincai and
• Helmut Ritter

Beilstein J. Nanotechnol. 2014, 5, 651–657, doi:10.3762/bjnano.5.76

• purchased from Acros, dried over calcium hydride, distilled under reduced pressure, and stored over 0.4 nm molecular sieves. Sodium ascorbate (AppliChem) and copper(II) sulfate (Carl Roth GmbH) were used as received. Commercially available reagents and solvents were used without further purification

• described before [8] the click reaction was successfully realized by adding mono-(6-azido-6-desoxy)-ß-CD to a solution of polyester in DMF (0.6% w/w). To the reaction mixture were added 10 mol % sodium ascorbate and 5 mol % copper(II) sulfate pentahydrate. The flask was immersed in an oil bath at 95 °C for

One-step synthesis of high quality kesterite Cu₂ZnSnS₄ nanocrystals – a hydrothermal approach

• Vincent Tiing Tiong,
• John Bell and
• Hongxia Wang

Beilstein J. Nanotechnol. 2014, 5, 438–446, doi:10.3762/bjnano.5.51

• the formation of pure kesterite CZTS nanocrystals. The roles of TGA in the hydrothermal synthesis are discussed. Experimental Materials: All the materials were provided by Sigma Aldrich unless otherwise stated. Chemicals of copper(II) chloride dehydrate (CuCl2·2H2O), zinc chloride (ZnCl2) product of

One pot synthesis of silver nanoparticles using a cyclodextrin containing polymer as reductant and stabilizer

• Arkadius Maciollek and
• Helmut Ritter

Beilstein J. Nanotechnol. 2014, 5, 380–385, doi:10.3762/bjnano.5.44

• the silver nitrate or polymer concentration silver nanoparticles of different sizes can be prepared. To avoid reduction of the silver salt by sodium ascorbate the microwave assisted click-type triazol-CD-monomer synthesis was carried out in the absence of copper(II) sulfate pentahydrate and sodium

• -methylacryl-β-cyclodextrin was synthesized according to the known procedure but without the addition of copper(II) sulfate pentahydrate and sodium ascorbate and the reaction time was elongated to 60 min [28]. Synthesis of poly(N-isopropylacrylamide-co-mono-β-CD-methacrylate) (1) Poly(N-isopropylacrylamide-co

Preparation of electrochemically active silicon nanotubes in highly ordered arrays

• Tobias Grünzel,
• Young Joo Lee,
• Karsten Kuepper and
• Julien Bachmann

Beilstein J. Nanotechnol. 2013, 4, 655–664, doi:10.3762/bjnano.4.73

• , phosphoric acid, copper(II) chloride dihydrate, chromium(VI) oxide, ethanol, hydrochloric acid, perchloric acid, argon, and dioxygen, were purchased from commercial suppliers and used as received. Ozone was generated from dioxygen in a generator BMT 803N from BMT Messtechnik. Aluminum (99.999%) was purchased

Continuous parallel ESI-MS analysis of reactions carried out in a bespoke 3D printed device

• Jennifer S. Mathieson,
• Mali H. Rosnes,
• Victor Sans,
• Philip J. Kitson and
• Leroy Cronin

Beilstein J. Nanotechnol. 2013, 4, 285–291, doi:10.3762/bjnano.4.31

• , mixing points, inlets and outlets, et cetera [4]. Herein, we show that we can carry out complex supramolecular chemistry in milliscale reactionware, in which cis,trans-1,3,5-tris(pyridine-2-ylmethylene)cyclohexane-1,3,5-triamine (ttop) forms complexes with a number of metals, such as copper(II) and