Controllable preparation, characterization and performance of Cu2O thin film and photocatalytic degradation of methylene blue using response surface methodology

Yu, Xiaojiao; Huang, Linzhu; Wei, Yu‐Chen; Zhang, Jian; Zhao, Zhuozhuo; Dai, Wenqin; Yao, Binghua

doi:10.1016/j.materresbull.2015.01.009

Cited by 62 publications

(28 citation statements)

References 30 publications

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“…Furthermore, the peak intensity of Cu2p gradually increases, indicating that the increasing molar percentage of Cu 1.8 Se of the composite. However, with the increase amount of Cu 1.8 Se, a shakeup peak almost appear and the binding energies of Cu 2p 3/2 and Cu 2p 1/2 slightly left‐shift, which briefly indicate the presence of Cu 2+ . Excluding the existence of CuO or CuS by XRD and Raman, it is reasonable to assume that a small amount of Cu + bond with Bi 2 WO 6 in the form of Cu‐O chemical interaction.…”

Section: Resultssupporting

confidence: 85%

“…However, with the increase amount of Cu 1.8 Se, a shakeup peak almost appear and the binding energies of Cu 2p 3/2 and Cu 2p 1/2 slightly left-shift, which briefly indicate the presence of Cu 2+ . 30,31 Excluding the existence of CuO or CuS by XRD and Raman, it is reasonable to assume that a small amount of Cu + bond with Bi 2 WO 6 in the form of Cu-O chemical interaction. These results reveal the electron transfer from Cu 1.8 Se to Bi 2 WO 6 .…”

Section: Resultsmentioning

confidence: 99%

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Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign

et al. 2018

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To make better use of solar light, a new Bi2WO6/Cu1.8Se photocatalyst active to visible and near‐infrared light has been synthesized by a facile hydrothermal method. The composites were characterized by X‐ray diffractometry (XRD), scanning electron microscopy (SEM), UV‐vis diffuse reflectance spectroscopy (DRS), and photoluminescene (PL). The photocatalytic activities of Bi2WO6/Cu1.8Se are evaluated by degrading Congo red solution and hydrogen generation from water. It was found that the molar percentage of Cu1.8Se had great effects on the morphology and photocatalytic property of the Bi2WO6/Cu1.8Se heterojunctions, and the composite with suitable molar amount of Cu1.8Se exhibits much enhanced photocatalytic activity for Congo red degradation under visible and near‐infrared light irradiation and for hydrogen generation under visible light compared to Bi2WO6. The significant improvement photocatalytic activity of the composite could be attributed to its good light absorption, suitable band gap structure, and effective separation of photogenerated electron‐hole pairs of Bi2WO6/Cu1.8Se heterojunction. This work presents an efficient multifunction photocatalyst owning the activity both for water splitting under visible light and for organic contaminants decomposition under visible‐near‐infrared light.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign

et al. 2018

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“…Four characteristic peaks (246, 292, 613 and 664 nm) of MB are observed and they are similar to those reported previously. 42 Another adsorbate, Cr(III) (Cr(NO 3 ) 3 ) ions, was prepared by dissolving Cr(III) (1000 mg L À1 ) in double-distilled water.…”

Section: Mb (C 16 H 18mentioning

confidence: 99%

Insight into the adsorption mechanisms of methylene blue and chromium(iii) from aqueous solution onto pomelo fruit peel

et al. 2019

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“…where x is the ratio of the sp 2 C content to the amount of sp 3 and sp 2 C atoms, which was determined to be 0.29.…”

Section: Synergistic Effect Between Nd and The Cu 2 O Matrixmentioning

confidence: 99%

“…[ 1 ] Copper(I) oxide (Cu 2 O) is an attractive photocatalyst because of its abundance, low toxicity, and environmental compatibility. [ 3 ] However, because of the short electron diffusion wileyonlinelibrary.com Considering these advantage of ND, we believe that it can overcome the above-mentioned defects of Cu 2 O nanoparticles. [ 3 ] However, because of the short electron diffusion wileyonlinelibrary.com Considering these advantage of ND, we believe that it can overcome the above-mentioned defects of Cu 2 O nanoparticles.…”

Section: Introductionmentioning

confidence: 97%

Nanodiamond‐Embedded p‐Type Copper(I) Oxide Nanocrystals for Broad‐Spectrum Photocatalytic Hydrogen Evolution

Lin

Xiao

et al. 2015

Advanced Energy Materials

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Copper(I) oxide (Cu2O) is an attractive photocatalyst because of its abundance, low toxicity, environmental compatibility, and narrow direct band gap, which allows efficient light harvesting. However, Cu2O exhibits poor photocatalytic performance and photostability because of its short electron diffusion length and low hole mobility. Here, it is demonstrated that nanodiamond (ND) can greatly improve the photocatalytic hydrogen evolution reaction (HER) of the p‐type photocatalyst Cu2O nanocrystals by nanocomposition. Compared with pure Cu2O nanocrystals, this composite shows a tremendous improvement in HER performance and photostability. HER rates of 100.0 mg NDs‐Cu2O nanocrystals are 1597 μmol normalh−1 normalg−1 and 824 μmol normalh−1 normalg−1 under the simulated solar light irradiation (AM 1.5, 100 mW cm−2) and visible light irradiation (420–760 nm, 77.5 mW cm−2), respectively. The solar‐to‐hydrogen conversion efficiency of this composite is 0.85%, which is nearly ten times higher than that of pure Cu2O. The quantum efficiency of the composite is high, with values of 0.17% at λ = 780 nm and 0.23% at λ = 850 nm. The broad spectral response of ND provides numerous carriers for the subsequent reactions. The electron‐donating ability of ND and suitable band structures of the two components promote electron injection from ND to Cu2O. These results suggest the broad applicability of ND to ameliorate the photoelectric properties of semiconductors.

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Controllable preparation, characterization and performance of Cu2O thin film and photocatalytic degradation of methylene blue using response surface methodology

Cited by 62 publications

References 30 publications

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign

Insight into the adsorption mechanisms of methylene blue and chromium(iii) from aqueous solution onto pomelo fruit peel

Nanodiamond‐Embedded p‐Type Copper(I) Oxide Nanocrystals for Broad‐Spectrum Photocatalytic Hydrogen Evolution

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Controllable preparation, characterization and performance of Cu2O thin film and photocatalytic degradation of methylene blue using response surface methodology

Cited by 62 publications

References 30 publications

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi2WO6/Cu1.8Se for organic pollutants under Vis‐NIR light reign

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi2WO6/Cu1.8Se for organic pollutants under Vis‐NIR light reign

Insight into the adsorption mechanisms of methylene blue and chromium(iii) from aqueous solution onto pomelo fruit peel

Nanodiamond‐Embedded p‐Type Copper(I) Oxide Nanocrystals for Broad‐Spectrum Photocatalytic Hydrogen Evolution

Contact Info

Product

Resources

About

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign