In Situ Photocurrent Spectroscopy and Photocatalysis of Heterojunctions Based on BiOCl/MgO/ZnO Core/Shell Nanosheets

Fang, Xuan1,6; Fang, Dan1; Zhao, Hongbin5; Yuen, Mukfung6; Li, Bobo4; Quan, Xiaoyu1; Xu, Zhikun2; Guo, Zhen3

2020-09-01

10.1166/jno.2020.2831

Journal of Nanoelectronics and Optoelectronics   影响因子和分区

1555-130X

1555-1318

The wide bandgap and layered morphology of BiOCl nanosheets are beneficial to separate electronhole pairs efficiently, making them attractive for high-efficiency photocatalysis applications. In this work, with hydrothermal method and atom layer deposition processes, we obtained BiOCl/MgO/ZnO core/shell structure nanosheets. Morphological and structural measurements confirmed the core/shell structural characteristics of the nanosheets. The photoresponse of individual BiOCl/MgO/ZnO core/shell nanosheets was investigated by in-situ photocurrent measurement in a transmission electron microscope system (TEM). The MgO insulating layer helped to broaden the width of the depletion region in BiOCl/ZnO pn junctions; as a result, photoinduced holes and electrons were separated quickly and effectively. The BiOCl/MgO/ZnO core/shell nanosheets exhibited fast photoresponses, including rise and decay times of 1.85 and 0.38 s, respectively. In addition, photocatalysis experiments revealed that the BiOCl/MgO/ZnO core/shell nanosheets exhibited higher photocatalytic efficiency than that of BiOCl nanosheets in the degradation of methyl orange. The results indicated the potential of this core/shell nanostructure as a high efficiency semiconductor photocatalyst and in ultraviolet optoelectronic devices.

BiOCl ZnO Core/Shell Nanosheet In-Situ Photocurrent Spectroscopy Photocatalysis

SCI

英语

其他

National Natural Science Foundation of China[61574022,61674021,11674038,61704011] ; China Postdoctoral Science Foundation["2019M652176","2019M661680"] ; Foundation of the State Key Laboratory of High Power Semiconductor Lasers, the Developing Project of Science and Technology of Jilin Province["20200301052RQ","20180519017JH","20180520177JH"] ; Shenzhen Fundamental Research Fund[JCYJ20180307151538972] ; Natural Science Foundation of Guangdong Province[2020A1515010868] ; National Natural Science Foundation[62074018]

Engineering ; Science & Technology - Other Topics ; Physics

Engineering, Electrical & Electronic ; Nanoscience & Nanotechnology ; Physics, Applied

WOS:000608372200001

AMER SCIENTIFIC PUBLISHERS

Web of Science

1.Changchun Univ Sci & Technol, Coll Opt & Elect Informat, Changchun 130022, Peoples R China
2.Guangdong Univ Petrochem Technol, Coll Sci, Maoming 525000, Peoples R China
3.Chinese Acad Sci, Suzhou Inst Biomed Engn & Technol, Key Lab Biomed Diagnost, Suzhou 215163, Peoples R China
4.Southern Univ Sci & Technol, Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
5.Gen Res Inst Nonferrous Met, State Key Lab Adv Mat Smart Sensing, Beijing 100088, Peoples R China
6.Chinese Univ Hong Kong, Sch Sci & Engn, Shenzhen 518172, Guangdong, Peoples R China

Fang, Xuan,Fang, Dan,Zhao, Hongbin,et al. In Situ Photocurrent Spectroscopy and Photocatalysis of Heterojunctions Based on BiOCl/MgO/ZnO Core/Shell Nanosheets[J]. Journal of Nanoelectronics and Optoelectronics,2020,15(9).

Fang, Xuan.,Fang, Dan.,Zhao, Hongbin.,Yuen, Mukfung.,Li, Bobo.,...&Guo, Zhen.(2020).In Situ Photocurrent Spectroscopy and Photocatalysis of Heterojunctions Based on BiOCl/MgO/ZnO Core/Shell Nanosheets.Journal of Nanoelectronics and Optoelectronics,15(9).

Fang, Xuan,et al."In Situ Photocurrent Spectroscopy and Photocatalysis of Heterojunctions Based on BiOCl/MgO/ZnO Core/Shell Nanosheets".Journal of Nanoelectronics and Optoelectronics 15.9(2020).