Thin p-type NiO nanosheet modified peanutshaped monoclinic BiVO4 for enhanced charge separation and photocatalytic activities

Yaru Peng; Junhao Cai; Yuxin Shi

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Thin p-type NiO nanosheet modified peanutshaped monoclinic BiVO4 for enhanced charge separation and photocatalytic activities

机译：Thin p-type NiO nanosheet modified peanutshaped monoclinic BiVO4 for enhanced charge separation and photocatalytic activities

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BiVO4(BVO)is an excellent semiconductor material with a suitable band gap for photocatalytic applications.The serious challenge is to solve the problem of electron-hole pair recombination in pure BVO.Herein,we reported the synthesis of NiO nanosheet coated BVO and the NiO/BVO heterojunction improved the photocatalytic activity effectively,while an appropriate precursor Ni(NO3)2·6H2O concentration is a key factor for the NiO formation with different morphologies.The enhanced dye adsorption capacity of the composite materials is attributed to the large specific surface area of NiO nanosheets.Moreover,the typical type-II p-n junction structure promoted the separation ability of photogenerated carriers and produced more ~·O_2~-and ~·OH~-radicals.The prepared NiO/BVO showed much higher photocatalytic activity than pristine BVO and the optimal photocatalytic performance was obtained when the mass percentage of precursors Ni(NO3)2·6H2O and BVO was 60%.The removal efficiency for RhB reached 92%,which was nine times than that of pure BVO.

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来源
《Catalysis science & technology》 |2022年第16期|5162-5170|共9页
作者
Yaru Peng; Junhao Cai; Yuxin Shi;
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作者单位

National Demonstration Center for Experimental Physics and Electronics Education,School of Physics and Electronics,Henan University,Kaifeng 475004,PR China;

Key Laboratory of Photovoltaic Materials of Henan Province,School of Physics and Electronics,Henan University,Kaifeng 475004,PR China;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
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Thin p-type NiO nanosheet modified peanutshaped monoclinic BiVO4 for enhanced charge separation and photocatalytic activities

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