文献类型：期刊文献

英文题名：Hierarchical h-, m- and n-BiPO4 microspheres: facile synthesis and application in the photocatalytic decomposition of refractory phenols and benzene

作者：Tian, Xiaoxin[1];Xu, Tong[2];Wang, Yunjian[2];Meng, Sugang[2,3]

第一作者：田孝鑫

通讯作者：Meng, SG[1];Meng, SG[2]

机构：[1]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China;[2]Huaibei Normal Univ, Coll Chem & Mat Sci, Huaibei 235000, Anhui, Peoples R China;[3]Anhui Key Lab Energet Mat, Huaibei 235000, Anhui, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Huaibei Normal Univ, Coll Chem & Mat Sci, Huaibei 235000, Anhui, Peoples R China;[2]corresponding author), Anhui Key Lab Energet Mat, Huaibei 235000, Anhui, Peoples R China.

年份：2017

卷号：7

期号：58

起止页码：36705-36713

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20173104003607);Scopus(收录号：2-s2.0-85026329363);WOS:【SCI-EXPANDED(收录号:WOS:000406347300058)】；

基金：This work was supported by the Natural Science Foundation of Anhui Province (1608085QB37), and the Collaborative Innovation Center of Advanced Functional Materials (XTZX103732016001).

语种：英文

外文关键词：Benzene - Biodegradation - Irradiation - Microspheres - Organic pollutants - Phenols - Photodegradation - Water pollution - Water treatment

摘要：BiPO4 microspheres with three kinds of crystal phase (h-BiPO4, m-BiPO4 and n-BiPO4) were prepared by a facile hydrothermal-calcination process. The crystalline phase, microstructures and photoelectrochemical properties were studied by various techniques. The results indicated that h-BiPO4 could transform into m-BiPO4 at 600 degrees C. Interestingly, h-BiPO4 accompanied with a little bit of n-BiPO4 would transform into n-BiPO4. After UV irradiation for 2 h, conversion of 94.6% and a mineralization rate of 76.8% could be achieved on n-BiPO4 for photocatalytic degradation of bisphenol A, which is almost 1.33 times as high as that of m-BiPO4 and 3.14 times that of h-BiPO4. Moreover, the n-BiPO4 also displayed the highest photocatalytic activity for degradation of other phenols (phenol and pchlorophenol) in water and gaseous benzene. The enhancement of activity could be attributed to the improvement of the photogenerated electron-hole separation efficiency, which would be conducive to the formation of active species (hydroxyl radicals ((OH)-O-center dot) and superoxide radicals (O-center dot(2)-)). The results suggest that n-BiPO4 shows potential applications as an efficient and stable photocatalyst for the photocatalytic decomposition of persistent organic pollutants in water and in the gas phase.