Mechanochemically constructed Bi2WO6/Zn-Al layered double hydroxide heterojunction with prominent visible light-driven photocatalytic efficiency

Ma，Tian1; Liu，Chunqi1; Li，Zhao1; Zheng，Renji2; Chen，Min3; Dai，Shujuan1; Zhao，Tonglin1

2021-12-01

10.1016/j.clay.2021.106328

APPLIED CLAY SCIENCE   影响因子和分区

0169-1317

1872-9053

Layered double hydroxide (LDH) based heterojunction is a potential material for photodegradation of organic pollutants due to the high carrier separation efficiency, strong redox ability, and excellent mineral morphology features, while the conventional wet method for the fabrication of LDH-based heterojunction is a complicated process with potential secondary risks. In this paper, BiWO/Zn-Al LDH heterostructures as highly effective photocatalysts were successfully fabricated by a facile two-step mechanochemical method. The phase composition, micromorphology, superficial chemical properties, optical utilization capability, and electrochemical characteristics of the as-prepared samples were tested, and the photocatalytic capacity was evaluated by degrading bisphenol A. With the inspired migration and restricted recombination of photogenerated carriers enabled by the heterostructure, BiWO/LDH composites were found to exhibit greatly enhanced photocatalytic capacity compared to pristine BiWO and LDH. The energy band structure and transfer route for photogenerated charge carriers are discussed according to DFT calculations and ESR techniques, thereby illuminating the corresponding reaction mechanism for the photocatalysis process. With these results, this work provides a novel concept for the oriented design and facile fabrication of LDH-based heterostructures with high effectiveness.

Bi2WO6 Heterojunction photocatalyst Mechanochemistry ZnAl-LDH

EI ; SCI

英语

其他

Special Fund for Scientific Research of USTL[2019RC03] ; Natural Science Foundation of Liaoning Province[2020-BS-224] ; Education Department Foundation of Liaoning Province[2020LNQN13] ; Liaoning Revitalization Talents Program[XLYC 2002028]

Chemistry ; Materials Science ; Mineralogy

Chemistry, Physical ; Materials Science, Multidisciplinary ; Mineralogy

WOS:000720456300010

ELSEVIER

20214611148059

Aluminum compounds ; Band structure ; Bismuth compounds ; Design for testability ; Optical properties ; Organic pollutants ; Photocatalytic activity ; Zinc compounds

Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Physical Chemistry:801.4 ; Organic Compounds:804.1 ; Solid State Physics:933

GEOSCIENCES

2-s2.0-85118726983

Scopus

1.School of Mining Engineering,University of Science and Technology Liaoning,Anshan,114051,China
2.School of Environmental Science and Engineering,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Southern University of Science and Technology,Shenzhen,518055,China
3.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan,430070,China

Ma，Tian,Liu，Chunqi,Li，Zhao,et al. Mechanochemically constructed Bi2WO6/Zn-Al layered double hydroxide heterojunction with prominent visible light-driven photocatalytic efficiency[J]. APPLIED CLAY SCIENCE,2021,215.

Ma，Tian.,Liu，Chunqi.,Li，Zhao.,Zheng，Renji.,Chen，Min.,...&Zhao，Tonglin.(2021).Mechanochemically constructed Bi2WO6/Zn-Al layered double hydroxide heterojunction with prominent visible light-driven photocatalytic efficiency.APPLIED CLAY SCIENCE,215.

Ma，Tian,et al."Mechanochemically constructed Bi2WO6/Zn-Al layered double hydroxide heterojunction with prominent visible light-driven photocatalytic efficiency".APPLIED CLAY SCIENCE 215(2021).