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Post-illumination activity of Bi2WO6 in the dark from the photocatalytic "memory" effect
Yang, Weiyi1; Chen, Yan2; Gao, Shuang1; Sang, Licheng2,3; Tao, Ruoge4; Sun, Caixia5,6; Shang, Jian Ku2; Li, Qi1
Corresponding AuthorLi, Qi(qiliuiuc@outlook.com)
2021-02-10
Source PublicationJOURNAL OF ADVANCED CERAMICS
ISSN2226-4108
Pages13
AbstractPhotocatalysts with the photocatalytic "memory" effect could resolve the intrinsic activity loss of traditional photocatalysts when the light illumination is turned off. Due to the dual requirements of light absorption and energy storage/release functions, most previously reported photocatalysts with the photocatalytic "memory" effect were composite photocatalysts of two phase components, which may lose their performance due to gradually deteriorated interface conditions during their applications. In this work, a simple solvothermal process was developed to synthesize Bi2WO6 microspheres constructed by aggregated nanoflakes. The pure phase Bi2WO6 was found to possess the photocatalytic "memory" effect through the trapping and release of photogenerated electrons by the reversible chemical state change of W component in the (WO4)(2-) layers. When the illumination was switched off, Bi2WO6 microspheres continuously produced H2O2 in the dark as those trapped photogenerated electrons were gradually released to react with O-2 through the two-electron O-2 reduction process, resulting in the continuous disinfection of Escherichia coli bacteria in the dark through the photocatalytic "memory" effect. No deterioration of their cycling H2O2 production performance in the dark was observed, which verified their stable photocatalytic "memory" effect.
KeywordBi2WO6 photocatalytic “ memory” effect energy storage release activity in the dark stability
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Sichuan Science and Technology Program ; Shenyang National Laboratory for Materials Science ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals ; Liaoning Baiqianwan Talents Program ; Natural Science Foundation of Liaoning Province of China ; Natural Science Foundation of Shandong Province, China
DOI10.1007/s40145-020-0448-8
Indexed BySCI
Languageen
Funding ProjectNational Natural Science Foundation of China[51672283] ; National Natural Science Foundation of China[51602316] ; National Natural Science Foundation of China[51902271] ; Fundamental Research Funds for the Central Universities[A1920502051907-15] ; Fundamental Research Funds for the Central Universities[2682020CX07] ; Fundamental Research Funds for the Central Universities[2682020CX08] ; Sichuan Science and Technology Program[2020YJ0259] ; Sichuan Science and Technology Program[2020YJ0072] ; Shenyang National Laboratory for Materials Science[18LHPY009] ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals[18LHPY009] ; Liaoning Baiqianwan Talents Program ; Natural Science Foundation of Liaoning Province of China[20180510042] ; Natural Science Foundation of Shandong Province, China[ZR2017MEM017]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000616453300001
PublisherSPRINGER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160460
Collection中国科学院金属研究所
Corresponding AuthorLi, Qi
Affiliation1.Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
4.Northeast Yucai Sch, Shenyang 110179, Peoples R China
5.Qingdao Binhai Univ, Key Lab New Metall Funct Mat & Adv Surface Engn U, Qingdao 266555, Peoples R China
6.Qingdao Binhai Univ, Sch Mech & Elect Engn, Qingdao 266555, Peoples R China
Recommended Citation
GB/T 7714
Yang, Weiyi,Chen, Yan,Gao, Shuang,et al. Post-illumination activity of Bi2WO6 in the dark from the photocatalytic "memory" effect[J]. JOURNAL OF ADVANCED CERAMICS,2021:13.
APA Yang, Weiyi.,Chen, Yan.,Gao, Shuang.,Sang, Licheng.,Tao, Ruoge.,...&Li, Qi.(2021).Post-illumination activity of Bi2WO6 in the dark from the photocatalytic "memory" effect.JOURNAL OF ADVANCED CERAMICS,13.
MLA Yang, Weiyi,et al."Post-illumination activity of Bi2WO6 in the dark from the photocatalytic "memory" effect".JOURNAL OF ADVANCED CERAMICS (2021):13.
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