Investigations on the role of alkali to obtain modulated defect concentrations for Cu2O thin films

Chowdhury, Anirban; Bijalwan, Pavan; Sahu, Ranjan K.

doi:10.1016/j.apsusc.2013.10.183

Cited by 24 publications

(13 citation statements)

References 61 publications

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“…2(b) at 932.6/952.5 eV, 934.4/954.8 eV can be assigned to Cu/Cu 2 O and CuO species, respectively. These assignments match very well with previous reports [51][52][53]. The C 1s spectrum shown in Fig.…”

Section: Xps Analyses For the Electrodeposited Superhydrophobic Metalsupporting

confidence: 90%

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Insights into the superhydrophobicity of metallic surfaces prepared by electrodeposition involving spontaneous adsorption of airborne hydrocarbons

Liu

Cao

Zhao

et al. 2015

Applied Surface Science

121

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Section: Xps Analyses For the Electrodeposited Superhydrophobic Metalsupporting

confidence: 90%

“…The O 1s spectrum in Fig. 2(d) is resolved into three peaks centered at 530.8, 532.0, and 533.2 eV from CuO, OH, and C O species [51][52][53][54]. These XPS analyses reveal that besides copper oxides, there were organic contaminations on the micro/nanostructured Cu surface.…”

Section: Xps Analyses For the Electrodeposited Superhydrophobic Metalmentioning

confidence: 86%

Insights into the superhydrophobicity of metallic surfaces prepared by electrodeposition involving spontaneous adsorption of airborne hydrocarbons

Liu

Cao

Zhao

et al. 2015

Applied Surface Science

121

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“…39,40 The as-synthesised Cu 2 O nanoparticles exhibited a predominant peak at 706 nm that is attributable to the recombination of excitons bounded to oxygen vacancies (ν O ) in the cubic Cu 2 O lattice. 39 This supports the presence of intrinsic oxygen defects in our material. In contrast, the commercial Cu 2 O nanoparticles did not show PL signature at ca.…”

Section: Nanoscale Papermentioning

confidence: 99%

Oxygen-deficient photostable Cu₂O for enhanced visible light photocatalytic activity

et al. 2018

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Oxygen vacancies in inorganic semiconductors play an important role in reducing electron-hole recombination, which may have important implications in photocatalysis. Cuprous oxide (Cu2O), a visible light active p-type semiconductor, is a promising photocatalyst. However, the synthesis of photostable Cu2O enriched with oxygen defects remains a challenge. We report a simple method for the gram-scale synthesis of highly photostable Cu2O nanoparticles by the hydrolysis of a Cu(i)-triethylamine [Cu(i)-TEA] complex at low temperature. The oxygen vacancies in these Cu2O nanoparticles led to a significant increase in the lifetimes of photogenerated charge carriers upon excitation with visible light. This, in combination with a suitable energy band structure, allowed Cu2O nanoparticles to exhibit outstanding photoactivity in visible light through the generation of electron-mediated hydroxyl (OH˙) radicals. This study highlights the significance of oxygen defects in enhancing the photocatalytic performance of promising semiconductor photocatalysts.

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“…The O 1s spectrum shown in Fig. 4d has a peak at 531.6 eV which can be attributed to the C=O/−OH [33]. Therefore, the XPS measurements confirm the existence of Ag and spontaneously adsorbed carbon contaminant on the superhydrophobic Ag surface.…”

Section: Resultsmentioning

confidence: 56%

Reversible wettability between superhydrophobicity and superhydrophilicity of Ag surface

et al. 2016

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We present a facile one-step method to fabricate superhydrophobic Ag surface by electrodeposition without using any low surface energy reagent. The water contact angle of the prepared surface is 167.1°and the sliding angle is only 0.5°after heat treatment. It is demonstrated by the field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses that the dendrites of rough micro-nanostructure combined with the spontaneously adsorbed hydrocarbon make the surface exhibit superhydrophobicity. However, the superhydrophobic Ag surface becomes superhydrophilic when the surface is irradiated by UV light for several hours. It recovers superhydrophobicity after further heat treatment and can successfully implement the reversible wettability transition between superhydrophobicity and superhydrophilicity for several cycles.

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Investigations on the role of alkali to obtain modulated defect concentrations for Cu2O thin films

Cited by 24 publications

References 61 publications

Insights into the superhydrophobicity of metallic surfaces prepared by electrodeposition involving spontaneous adsorption of airborne hydrocarbons

Insights into the superhydrophobicity of metallic surfaces prepared by electrodeposition involving spontaneous adsorption of airborne hydrocarbons

Oxygen-deficient photostable Cu₂O for enhanced visible light photocatalytic activity

Reversible wettability between superhydrophobicity and superhydrophilicity of Ag surface

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Investigations on the role of alkali to obtain modulated defect concentrations for Cu2O thin films

Cited by 24 publications

References 61 publications

Insights into the superhydrophobicity of metallic surfaces prepared by electrodeposition involving spontaneous adsorption of airborne hydrocarbons

Insights into the superhydrophobicity of metallic surfaces prepared by electrodeposition involving spontaneous adsorption of airborne hydrocarbons

Oxygen-deficient photostable Cu2O for enhanced visible light photocatalytic activity

Reversible wettability between superhydrophobicity and superhydrophilicity of Ag surface

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Product

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Oxygen-deficient photostable Cu₂O for enhanced visible light photocatalytic activity