Synthesis of CuO nano- and micro-structures and their Raman spectroscopic studies

Wang, Wenzhong; Qing, Zhou; Fei, Xiangmin; He, Yu; Zhang, Pengcheng; Zhang, Guling; Peng, Lei; Xie, Wei

doi:10.1039/b919043k

Cited by 157 publications

(77 citation statements)

References 50 publications

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“…All of these bands are either weak or overlapped with ceria Raman modes. Additionally, a broad band centred at 1150 cm -1 , assigned to multi-phonon (MP) transition was observed for the alumina based systems [51]. The presence of the CuO Raman mode is in agreement with our XRD data, where some CuO phases were detected.…”

Section: Raman Spectroscopysupporting

confidence: 80%

WGS and CO-PrOx reactions using gold promoted copper-ceria catalysts: “Bulk CuO CeO2 vs. CuO CeO2/Al2O3 with low mixed oxide content”

Reina

Ivanova

Laguna

et al. 2016

Applied Catalysis B: Environmental

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A copper-ceria bulk catalyst has been compared to a series of catalysts designed according to the as called "supported approach", corresponding to the dispersion of low content mixed copper-ceria oxide on alumina matrix. The principal characteristics of both types of catalysts are contemplated and the differences in their electronic and redox properties discussed in details. As a plus, the gold metal promotion of the catalysts is also envisaged. The advantages of the systems in the CO clean up reactions, WGS and CO-PrOx are commented. While the WGS activity appears to be ruled especially by the Cu/Ce surface to volume ratio, the CO-PrOx reaction is governed by the CuO loading. Gold addition provides benefits only at the low temperature WGS regime. Very importantly, the supported systems are always superior to the bulk configuration in terms of specific activity, a key factor from the catalyst's design perspective.

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Section: Raman Spectroscopysupporting

confidence: 80%

WGS and CO-PrOx reactions using gold promoted copper-ceria catalysts: “Bulk CuO CeO2 vs. CuO CeO2/Al2O3 with low mixed oxide content”

Reina

Ivanova

Laguna

et al. 2016

Applied Catalysis B: Environmental

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“…The Raman spectra of CuO NPs are discussed elsewhere. [39][40][41][42] In the Raman spectra of pure CuO NPs (Fig. 3), a strong Raman peak at 275 cm À1 is attributed to the Raman active optical-phonon A g mode of monoclinic (C2/c) CuO NPs.…”

Section: Raman Analysis Of Cuo : Mn Nanoparticlesmentioning

confidence: 99%

Surface‐enhanced Raman scattering characteristics of CuO : Mn/Ag heterojunction probed by methyl orange: effect of Mn²⁺ doping

Prakash

Kumar

Singh

et al. 2016

J Raman Spectroscopy

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Interest in the synthesis of hybrid substrates for surface-enhanced Raman scattering (SERS) has surged recently. Hereof, in the present work, a hybrid SERS substrate CuO : Mn/Ag heterojunction has been synthesised. To accomplish this, the nanostructred Ag island film and CuO : Mn nanoparticles are synthesised by vacuum thermal evaporation method and sol-gel method respectively, and thereafter, a heterojunction between the CuO : Mn and Ag is fabricated by adsorption of CuO : Mn (10 -3 M in ethanol) on Ag island film. Further, the SERS sensitivity of CuO : Mn/Ag heterojunctions has been studied by probing methyl orange. We observed that with Mn-doping in the lattice of CuO, the SERS signal is enhanced considerably because of ferromagnetic ordering in CuO : Mn. DFT/B3LYP/6-311 G(d, p) method is used to calculate the energy of HOMO and LUMO level of methyl orange.

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“…The monomer of PEG was apt to exist with chain structures in water and there existed a large quantity of activated oxygens in PEG molecular chains, resulting in strong interactions between PEG molecules and metal ions to form metal ions-PEG 1D chain structures. Therefore, in the case of our experiment, Ag 1+ -PEG 1D chain structures can be formed when PEG and Ag + are mixed together in water [24,25]. Thus, we postulated that these Ag + -PEG 1D chain structures could serve as templates to direct the formation of Ag 2 CO 3 quasi-onedimensional nanostructures.…”

Section: Role Of Surfactant Pegmentioning

confidence: 84%

“…tures [25]. On the other hand, the length of chain structure formed by PEG in water increases with increasing the molecular weight of PEG, thus using PEG with molecular weights of 200, 400, and 600, the Ag 2 CO 3 one-dimensional nanostructures with different length are obtained.…”

Section: Growth Mechanism Of Ag 2 Co 3 Quasi-one-dimensional Nanostrumentioning

confidence: 97%

Room temperature surfactant-assisted one-step solid-state synthesis of Ag2CO3 quasi-one-dimensional nanostructures

Wang¹,

Zhao²,

Zhang³

2011

Journal of Alloys and Compounds

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Synthesis of CuO nano- and micro-structures and their Raman spectroscopic studies

Cited by 157 publications

References 50 publications

WGS and CO-PrOx reactions using gold promoted copper-ceria catalysts: “Bulk CuO CeO2 vs. CuO CeO2/Al2O3 with low mixed oxide content”

WGS and CO-PrOx reactions using gold promoted copper-ceria catalysts: “Bulk CuO CeO2 vs. CuO CeO2/Al2O3 with low mixed oxide content”

Surface‐enhanced Raman scattering characteristics of CuO : Mn/Ag heterojunction probed by methyl orange: effect of Mn²⁺ doping

Room temperature surfactant-assisted one-step solid-state synthesis of Ag2CO3 quasi-one-dimensional nanostructures

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Synthesis of CuO nano- and micro-structures and their Raman spectroscopic studies

Cited by 157 publications

References 50 publications

WGS and CO-PrOx reactions using gold promoted copper-ceria catalysts: “Bulk CuO CeO2 vs. CuO CeO2/Al2O3 with low mixed oxide content”

WGS and CO-PrOx reactions using gold promoted copper-ceria catalysts: “Bulk CuO CeO2 vs. CuO CeO2/Al2O3 with low mixed oxide content”

Surface‐enhanced Raman scattering characteristics of CuO : Mn/Ag heterojunction probed by methyl orange: effect of Mn2+ doping

Room temperature surfactant-assisted one-step solid-state synthesis of Ag2CO3 quasi-one-dimensional nanostructures

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Surface‐enhanced Raman scattering characteristics of CuO : Mn/Ag heterojunction probed by methyl orange: effect of Mn²⁺ doping