Structure of copper(II) hydroxide, Cu(OH)2

Oswald, H. R.; Reller, A.; Schmalle, Helmut W.; Dubler, E.

doi:10.1107/s0108270190006230

Cited by 110 publications

(99 citation statements)

References 8 publications

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“…The XRD pattern shown in Figure 1 is attributable to the orthorhombic Cu(OH) 2 phase with lattice parameters of a ) 0.29463, b ) 1.05437, and c ) 0.52377 nm, which are in good agreement with the corresponding literature values: a ) 0.29471, b ) 1.05930, and c ) 0.52564 nm. 18 The chemical composition of the as-synthesized nanoribbon was determined previously by X-ray photoelectron spectrum (XPS) and the Cu Auger electron spectrum.…”

Section: Resultsmentioning

confidence: 99%

In Situ Structure Evolution from Cu(OH)₂ Nanobelts to Copper Nanowires

Wang¹,

Kong²,

Wen³

et al. 2003

J. Phys. Chem. B

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In situ structural evolution from Cu(OH) 2 nanobelts to copper nanowires has been studied by transmission electron microscopy in a vacuum of 3 × 10 -8 Torr. The decomposition follows the sequence of Cu(OH) 2 f CuO f Cu 2 O f Cu. The decomposition from Cu(OH) 2 to CuO is attributed to electron beam radiation damage. The reduction from CuO to Cu 2 O is attributed to heat-induced decomposition between 50 and 200 °C. For the Cu(OH) 2 nanobelts synthesized using the copper grid with and without a carbon coating, the decomposition from Cu 2 O to Cu takes place between 200 and 300 °C and 300 and 600 °C, and the final Cu takes the forms of polycrystalline nanowires sheathed with graphitic carbon and nanoparticles, respectively. Therefore, because of the nanostructured nature of the nanowires and large surface area, introducing carbon into the sample synthesis can reduce the decomposition temperature by almost half. This study demonstrates a possible approach for creating metallic copper nanowires by heat-induced decomposition under vacuum at 300 °C or even lower.

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Section: Resultsmentioning

confidence: 99%

In Situ Structure Evolution from Cu(OH)₂ Nanobelts to Copper Nanowires

Wang¹,

Kong²,

Wen³

et al. 2003

J. Phys. Chem. B

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“…Theoretical scattering paths were calculated using FEFF (Ankudinov et al, 1998). For copper(II), they were based on the structure of copper(II) hydroxide, Cu(OH) 2 , (Oswald et al, 1990), cornetite, Cu 3 PO 4 (OH) 3 , (Eby and Hawthorne, 1989) and libethenite, Cu 2 PO 4 OH, (Heritsch, 1940) with partial Fe-for-Cu substitution, except for the Cu-O multiple scattering paths that were calculated directly in FEFF. For lead(II), the scattering paths were based on the structure of red tetragonal lead(II) oxide, PbO, (Leciejewicz, 1961) (Kolitsch et al, 2008) with partial Fe-for-P substitution, and lead tetrapolyphosphate (Averbuch-Pouchot and Durif, 1987) with partial Fe-for-Pb substitution.…”

Section: X-ray Absorption Spectroscopymentioning

confidence: 99%

Phosphate effects on copper(II) and lead(II) sorption to ferrihydrite

Tiberg

Sjöstedt

Persson

et al. 2013

Geochimica et Cosmochimica Acta

165

110

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Transport of lead(II) and copper(II) ions in soil is affected by the soil phosphorus status. Part of the explanation may be that phosphate increases the adsorption of copper(II) and lead(II) to iron (hydr)oxides in soil, but the details of these interactions are poorly known. Knowledge about such mechanisms is important, for example, in risk assessments of contaminated sites and development of remediation methods. We used a combination of batch experiments, extended X-ray absorption fine structure (EXAFS) spectroscopy and surface complexation modeling with the three-plane CD-MUSIC model to study the effect of phosphate on sorption of copper(II) and lead(II) to ferrihydrite. The aim was to identify the surface complexes formed and to derive constants for the surface complexation reactions. In the batch experiments phosphate greatly enhanced the adsorption of copper(II) and lead(II) to ferrihydrite at pH < 6. The largest effects were seen for lead(II). In conclusion, geochemical models used for simulating trace element behavior in acidic environments seem to require ternary metal-phosphate surface complexes to properly describe partitioning of metals between solution and the solid phase.3

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“…In the synthesis, reactions (1. direction: a feature characteristic of the square-planar coordinated Cu 2+ ions [56].…”

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confidence: 99%

Microemulsion Synthesis of Copper Oxide Nanorod-Like Structures

Dodoo‐Arhin

Leoni

Scardi

2012

Molecular Crystals and Liquid Crystals

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Copper oxide (CuO) nanorod-like structures made of spherical nanocrystals were synthesized at moderate temperature (80°C) starting from CuCl 2 •2H 2 O crystals in a water/n-heptane microemulsion stabilised by the nonionic Brij-30 surfactant. Whole Powder Pattern Modelling of the X-ray diffraction pattern shows absence of linear and planar defects with crystalline domains in the range of 4 -8 nm. A linear correlation between the average size of the particles and the quantity of water in the system was observed: all synthesised specimens show a large blue shift of the energy bandgap (up to 2.7 eV versus 1.2 eV of bulk CuO) resulting from quantum confinement effects. The mechanism of growth of the spherical nanoparticles into nanorod-like structures has been elucidated.

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Structure of copper(II) hydroxide, Cu(OH)2

Cited by 110 publications

References 8 publications

In Situ Structure Evolution from Cu(OH)₂ Nanobelts to Copper Nanowires

In Situ Structure Evolution from Cu(OH)₂ Nanobelts to Copper Nanowires

Phosphate effects on copper(II) and lead(II) sorption to ferrihydrite

Microemulsion Synthesis of Copper Oxide Nanorod-Like Structures

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Structure of copper(II) hydroxide, Cu(OH)2

Cited by 110 publications

References 8 publications

In Situ Structure Evolution from Cu(OH)2 Nanobelts to Copper Nanowires

In Situ Structure Evolution from Cu(OH)2 Nanobelts to Copper Nanowires

Phosphate effects on copper(II) and lead(II) sorption to ferrihydrite

Microemulsion Synthesis of Copper Oxide Nanorod-Like Structures

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Product

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In Situ Structure Evolution from Cu(OH)₂ Nanobelts to Copper Nanowires

In Situ Structure Evolution from Cu(OH)₂ Nanobelts to Copper Nanowires