Efficient photocatalytic dechlorination of chlorophenols over a nonlinear optical material Na3VO2B6O11 under UV-visible light irradiation
Fan, XY (Fan, Xiaoyun); Lai, KR (Lai, Kangrong); Wang, LC (Wang, Lichang); Qiu, HS (Qiu, Hengshan); Yin, J (Yin, Jiao); Zhao, PJ (Zhao, Pengjun); Pan, SL (Pan, Shilie); Xu, JB (Xu, Jinbao); Wang, CY (Wang, Chuanyi); Fan, XY
2015
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
卷号3期号:23页码:12179-12187
摘要

One type of nonlinear optical crystal Na3VO2B6O11 (NVB) with noncentrosymmetry was synthesized and shows extraordinary UV-visible light driven photocatalytic activity in the dechlorination of 2,4-DCP under UV-vis (lambda > 320 nm) light irradiation. The obtained dechlorination efficiency is 90 times higher than that of the commercial P25 TiO2 catalyst under the same conditions. The noncentrosymmetric structure of NVB gives rise to an intrinsic large polarization effect as evidenced by Kelvin probe force microscopy, and the polarization promotes separation of photogenerated electron-hole pairs, leading to efficient cleavage of chlorophenols into phenol series fragments and dissociative Cl- anions. A possible reaction pathway for 2,4-DCP dechlorination by NVB upon UV-vis light irradiation is proposed. Hydrodechlorination was found to be the major reaction pathway for 2,4-DCP dechlorination which could react with hydroxyl radicals to produce 1,4-benzoquinone and ocatechol. This work further advances the understanding of nonlinear optical materials, which opens up a new route to the design and synthesis of highly efficient photocatalysts by using nonlinear optical materials.

DOI10.1039/c5ta01814e
收录类别SCI
WOS记录号WOS:000355736700010
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/5175
专题中国科学院特殊环境功能材料与器件重点试验室
通讯作者Fan, XY
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
2.Changji Univ, Dept Phys, Changji 831100, Peoples R China
3.So Illinois Univ, Dept Chem & Biochem, Carbondale, IL 62901 USA
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Fan, XY ,Lai, KR ,Wang, LC ,et al. Efficient photocatalytic dechlorination of chlorophenols over a nonlinear optical material Na3VO2B6O11 under UV-visible light irradiation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(23):12179-12187.
APA Fan, XY .,Lai, KR .,Wang, LC .,Qiu, HS .,Yin, J .,...&Fan, XY.(2015).Efficient photocatalytic dechlorination of chlorophenols over a nonlinear optical material Na3VO2B6O11 under UV-visible light irradiation.JOURNAL OF MATERIALS CHEMISTRY A,3(23),12179-12187.
MLA Fan, XY ,et al."Efficient photocatalytic dechlorination of chlorophenols over a nonlinear optical material Na3VO2B6O11 under UV-visible light irradiation".JOURNAL OF MATERIALS CHEMISTRY A 3.23(2015):12179-12187.
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