The convenient preparation of porous CuO via copper oxalate precursor

Zeng, Jia; Yue, Linhai; Zheng, Yifan; Xu, Zhi‐Kang

doi:10.1016/j.materresbull.2007.07.044

Cited by 38 publications

(20 citation statements)

References 27 publications

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“…No other peaks were observed either in TG or DTA on increasing the heating temperature up to 1000 o C which confirm that the produced CuO is thermally stable and does not undergo any phase-phase transitions. These results are in agreement with the results obtained by many authors [16,25,26,46]. From the above results, copper oxalate can decompose to copper oxide according to the following equation [25]:…”

Section: Electron Microscopy (Semandtem)supporting

confidence: 92%

“…CuO is an important oxide in many chemical processes such as degradation of nitrous oxides, selective catalytic reduction of nitric oxide with ammonia and oxidation of CO, hydrocarbons and fine chemicals [17][18][19]. Up to date, many studies have been reported about the preparation of CuO nanomaterials such as nanorods [20], nanowires [21], Shuttke-like structure [22], nanoribbones and nanoparticles [11,16,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Nano CuO-NiO Mixed Oxides

Said¹,

El-Wahab²,

Soliman³

et al. 2014

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A series of single and mixed oxides of nano CuO-NiO were prepared by thermal decomposition of the NiC 2 O 4 .2H 2 O and/or CuC 2 O 4 precursors which obtained via the reaction between alcoholic metal nitrates and oxalic acid solutions. Thermal behavior of the single and mixed salts has been studied using thermal analysis (TG and DTA). Thermal products were characterized using Fouier transform infrared (FTIR), X-ray diffraction (XRD), Electron microscopy (SEM&TEM), Nitrogen adsorption at -196 o C and surface excess oxygen measurements. The results revealed that, pure NiC 2 O 4 .2H 2 O and CuC 2 O 4 decomposed at 355 and 325 o C, respectively. Also, it was found that the addition of NiO to CuO brought a significant increase in the degree of crystallinity of the mixed oxides which is accompanying with an increase in their particle size and a decrease in the surface area. Moreover, addition of NiO to CuO, also reduces the amount of surface excess oxygen of CuO due to a synergistic effect.

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Section: Electron Microscopy (Semandtem)supporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Nano CuO-NiO Mixed Oxides

Said¹,

El-Wahab²,

Soliman³

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Cupric oxide, CuO, is an important p-type semiconductor metal oxide with a band gap of 1.0-4.5 eV 2,3 , which is widely used in nano systems such as high temperature superconductors 4 , magnetic storage media 1,5 , solar cells 1,[3][4][5][6][7][8][9] , hydrogen storage materials 7 , batteries 1,2,8 , gas sensors 1-10 , catalysis [2][3][4][5][6][7]9,10 . Up to date, CuO with different morphologies such as nanobelt 1,8 , nanospindle 2 , nanoring 2,4 , nanorod 1,4,6 , nanospherical 8 7,8,9,12,13 methods.…”

Section: Introductionmentioning

confidence: 99%

A green synthesis of copper oxide nanoparticles by mechanochemical method

Tadjarodi¹,

Roshani²

2014

10.5267/j.ccl

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Copper oxide nanoparticles were successfully synthesized by mechanochemical reaction, which is a green, low cost, solvent free, rapid method and followed by calcining treatment. Copper acetate monohydrate and urea were used as reagents and the resulted precursor was calcined at 500 C for 2h in air. The scanning electron microscopy (SEM) revealed the formation of nanoparticles with an average size of about 86 nm. The Fourier transform infrared (FT-IR) spectrum and X-ray powder diffraction (XRD) pattern of the product confirmed all of reflections can be indexed to pure phase of CuO with a monoclinic crystal system. The diffuse reflectance spectrum (DRS) showed a band gap of 1.7 eV.

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“…Besides various usual CuO micro-/nano-structures such as nanowires [20,21], nanosheets [22,23], nanoribbons [24][25][26], hollow and hierarchical micro-spheres [27,28], nanorods [29,30] and nanoparticles [31], porous CuO micro-/nano-structures have also been reported for the improvement of its performance in currently existing applications [32][33][34][35][36]. Recently, a precursor-calcination route was demonstrated for the effective fabrication of hierarchically porous oxide materials with desired microstructure [37][38][39].…”

Section: Introductionmentioning

confidence: 99%