Photocatalyst Bi(OH)SO4 · H2O with High Photocatalytic Performance


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Аннотация

In this work, Bi(OH)SO4 · H2O, a novel photocatalyst was prepared by a facile method. The sample was characterized by XRD, XPS, SEM, Mott-Schottky curve and ESR. The band gap of Bi(OH)SO4 · H2O is about 4.64 eV, and its CB and VB are estimated at –0.5 and 4.14 eV, respectively. Degradation of RhB and PhOH under UV light irradiation illustrates that the sample has good UV activity. The results of ESR spectra and tapping experiments indicate that the main active species in the photocatalytic reaction process are hydroxyl radicals, superoxide radicals and holes. A possible mechanism of catalytic degradation of organic pollutants was proposed. This semiconductor has a positive valence band and high oxidation capacity theoretically and it may have broad application in synthesizing highly efficient photocatalysts through doping other elements or creating heterojunctions.

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Авторлар туралы

Haojie Lu

Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences

Email: yaowq@tsinghua.edu.cn
ҚХР, Beijing, 100083

Ruiting Wang

Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences

Email: yaowq@tsinghua.edu.cn
ҚХР, Beijing, 100083

Linghua Zhang

Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences

Email: yaowq@tsinghua.edu.cn
ҚХР, Beijing, 100083

Daimei Chen

Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences

Хат алмасуға жауапты Автор.
Email: chendaimei@cugb.edu.cn
ҚХР, Beijing, 100083

Qiang Hao

Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences

Хат алмасуға жауапты Автор.
Email: haoqiang@cugb.edu.cn
ҚХР, Beijing, 100083

Chao Ma

Department of Chemistry, Tsinghua University

Email: yaowq@tsinghua.edu.cn
ҚХР, Beijing, 100084

Wenqing Yao

Department of Chemistry, Tsinghua University

Хат алмасуға жауапты Автор.
Email: yaowq@tsinghua.edu.cn
ҚХР, Beijing, 100084

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