Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination

IMR OpenIR

	Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination
	Chen, Y; Yang, WY; Gao, S; Zhu, LG; Sun, CX; Li, Q; Li, Q (reprint author), Chinese Acad Sci, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
	2018-05-09
发表期刊	CHEMSUSCHEM
ISSN	1864-5631
卷号	11 期号:9 页码:1521-1532
摘要	A built-in electric field from polarization inside polar photocatalysts could provide the driving force for photogenerated electrons and holes to move in opposite directions for better separation to improve their photocatalytic performance. The photocatalytic performance of a polar photocatalyst of Bi2MoO6 has been enhanced through the precise control of its structure to increase internal polarization. DFT calculations predicted that a shortened crystal lattice parameter b in Bi2MoO6 could induce larger internal polarization, which was achieved by the modulation of the pH of the reaction solution during a solvothermal synthetic process. A series of Bi2MoO6 samples were created with reaction solutions of pH approximate to 1, 4, and 8; the crystal lattice parameter b was found to decrease gradually with increasing solution pH. Accordingly, these Bi2MoO6 samples demonstrated a gradually enhanced photocatalytic performance with decreasing crystal lattice parameter b, as demonstrated by the photocatalytic degradation of sulfamethoxazole/phenol and disinfection of Staphylococcus aureus bacteria under visible-light illumination due to improved photogenerated charge-carrier separation. This study demonstrates an innovative design strategy for materials to further enhance the photocatalytic performance of polar photocatalysts for a broad range of technical applications.; A built-in electric field from polarization inside polar photocatalysts could provide the driving force for photogenerated electrons and holes to move in opposite directions for better separation to improve their photocatalytic performance. The photocatalytic performance of a polar photocatalyst of Bi2MoO6 has been enhanced through the precise control of its structure to increase internal polarization. DFT calculations predicted that a shortened crystal lattice parameter b in Bi2MoO6 could induce larger internal polarization, which was achieved by the modulation of the pH of the reaction solution during a solvothermal synthetic process. A series of Bi2MoO6 samples were created with reaction solutions of pH approximate to 1, 4, and 8; the crystal lattice parameter b was found to decrease gradually with increasing solution pH. Accordingly, these Bi2MoO6 samples demonstrated a gradually enhanced photocatalytic performance with decreasing crystal lattice parameter b, as demonstrated by the photocatalytic degradation of sulfamethoxazole/phenol and disinfection of Staphylococcus aureus bacteria under visible-light illumination due to improved photogenerated charge-carrier separation. This study demonstrates an innovative design strategy for materials to further enhance the photocatalytic performance of polar photocatalysts for a broad range of technical applications.
部门归属	[chen, yan ; yang, weiyi ; li, qi] chinese acad sci, environm funct mat div, shenyang natl lab mat sci, inst met res, shenyang 110016, liaoning, peoples r china ; [chen, yan] univ chinese acad sci, beijing 100049, peoples r china ; [gao, shuang] tsinghua univ, grad sch shenzhen, div energy & environm, beijing 100049, peoples r china ; [zhu, linggang] beihang univ, sch mat sci & engn, beijing 100049, peoples r china ; [sun, caixia] qingdao binhai univ, key lab new metall funct mat & adv surface engn u, qingdao 266555, peoples r china ; [sun, caixia] qingdao binhai univ, sch mech & elect engn, qingdao 266555, peoples r china
关键词	Total-energy Calculations Wave Basis-set Heterogeneous Photocatalysis Hydrothermal Synthesis Controllable Synthesis Carrier Separation Electric-field Water Degradation Tio2
学科领域	Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology
资助者	Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4N56R1161, Y5N56F2161]; National Natural Science Foundation of China [51672283, 51602316]; Natural Science Foundation of Shandong Province, PR China [ZR2017MEM017]
收录类别	SCI
语种	英语
WOS记录号	WOS:000431975700017
引用统计	被引频次：62[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79311
专题	中国科学院金属研究所
通讯作者	Li, Q (reprint author), Chinese Acad Sci, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Chen, Y,Yang, WY,Gao, S,et al. Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination[J]. CHEMSUSCHEM,2018,11(9):1521-1532.
APA	Chen, Y.,Yang, WY.,Gao, S.,Zhu, LG.,Sun, CX.,...&Li, Q .(2018).Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination.CHEMSUSCHEM,11(9),1521-1532.
MLA	Chen, Y,et al."Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination".CHEMSUSCHEM 11.9(2018):1521-1532.