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Exploring the Origin of High Dechlorination Activity in Polar Materials M2B5O9CI (M = Ca, Sr, Ba, Pb) with Built-In Electric Field
Fan, XY (Fan, Xiaoyun); Wu, ZP (Wu, Zhipeng); Wang, LC (Wang, Lichang); Wang, CY (Wang, Chuanyi); Fan, XY; Wang, CY
2017
发表期刊CHEMISTRY OF MATERIALS
卷号29期号:2页码:639-647
摘要Polar photocatalyst materials usually exhibit ferroelectric characteristics giving rise to spontaneous polarization behavior which works as a driving force for the separation of photogenerated electrons and holes and mitigates the effect of charge recombination. This study shows that the surface potential changes for a polar phtotocatalyst before and after photoirradiation can be used to predict the photocatalytic activities among different phtotocatalysts. We systematically investigated the correlation among the surface properties, crystal structure, electronic band structure, photocatalytic activity, and stability of four B O and alkaline earth cations containing photocatalysts, M2B5O9Cl (M = Ca, Sr, Ba, Pb). Among the four studied photocatalysts, Ba2B5O9Cl exhibits the greatest changes in the surface potential after photoirradiation and also shows the highest photocatalytic activity for dechlorination of chlorophenols under UV light irradiation. Its photocatalytic activity is about 1.3, 2.8, 4.4, and 15 times those of Ca2B5O9Cl, Sr2B5O9Cl, Pb2B5O9Cl, and P25 samples, respectively. The results support that the photocatalytic activity of the four photocatalysts strongly depends on the spontaneous polarization power. Overall, these findings demonstrate the utility of Kelvin probe force microscopy that can screen for a highly efficient photodegradation materials in the field of photo catalysis.
DOI10.1021/acs.chemmater.6b04082
收录类别SCI
WOS记录号WOS:000392891700022
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4738
专题环境科学与技术研究室
通讯作者Fan, XY; Wang, CY
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
3.Tianjin Univ, Key Lab, Minist Educ Green Chem Technol, Tianjin 300072, Peoples R China
4.Tianjin Univ, R&D Ctr Petrochem Technol, Tianjin 300072, Peoples R China
5.Southrn Illinois Univ, Dept Chem & Biochem, Carbondale, IL 62901 USA
6.Southrn Illinois Univ, Mat Technol Ctr, Carbondale, IL 62901 USA
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Fan, XY ,Wu, ZP ,Wang, LC ,et al. Exploring the Origin of High Dechlorination Activity in Polar Materials M2B5O9CI (M = Ca, Sr, Ba, Pb) with Built-In Electric Field[J]. CHEMISTRY OF MATERIALS,2017,29(2):639-647.
APA Fan, XY ,Wu, ZP ,Wang, LC ,Wang, CY ,Fan, XY,&Wang, CY.(2017).Exploring the Origin of High Dechlorination Activity in Polar Materials M2B5O9CI (M = Ca, Sr, Ba, Pb) with Built-In Electric Field.CHEMISTRY OF MATERIALS,29(2),639-647.
MLA Fan, XY ,et al."Exploring the Origin of High Dechlorination Activity in Polar Materials M2B5O9CI (M = Ca, Sr, Ba, Pb) with Built-In Electric Field".CHEMISTRY OF MATERIALS 29.2(2017):639-647.
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