In Situ Raman Probing of Chlorphenol Degradation on Different Facets of K3B6O10Br Single Crystal
Fan, XY (Fan, Xiaoyun); Yue, X (Yue, Xiu); Jia, HZ (Jia, Hanzhong)
2018
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume122Issue:26Pages:14574-14581
Abstract

Semiconductor photocatalysts with specific facets can induce high reactive activities has aroused wide attention. Here, we endeavor to gain quantitative insights into the intrinsic facet-dependent catalytic activities of K3B6O10Br (KBB) crystal using in situ Raman technique under room temperature by photocatalysis dechlorination of 2,4-DCP as a model reaction. Using a well-defined sizable KBB single crystal (size: 28 mm X 20 mm X 9 mm) with high (211), (110), and (101) facet exposure, the time-resolved Raman spectra for different facets have been clearly tested, it shows that the Raman spectrum of (211) facet had a remarkable change compared with (110) and (101) facets when the crystal was immersed in the 2,4-DCP solution under light irradiation. Through DFT, we obtain qualitative details on the reaction mechanisms of photocatalyzed and provide a refined understanding of the elementary processes. It was found that the -OH contact mode between the pollutant and the crystal facet was the most effective mode, which can produce more (OH)-O-center dot radicals than the other two modes. Moreover, the (211) facet offers the largest ratio of K atoms and surface energy, making the (211) facet more active than (110) and (101) facets.

DOI10.1021/acs.jpcc.8b03176
Indexed BySCI
WOS IDWOS:000438178900038
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Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5514
Collection中国科学院特殊环境功能材料与器件重点试验室
Affiliation1.Jinan Univ, Sch Environm, Guangzhou 510632, Guangdong, Peoples R China
2.Jinan Univ, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Guangdong, Peoples R China
3.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
4.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
Recommended Citation
GB/T 7714
Fan, XY ,Yue, X ,Jia, HZ . In Situ Raman Probing of Chlorphenol Degradation on Different Facets of K3B6O10Br Single Crystal[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(26):14574-14581.
APA Fan, XY ,Yue, X ,&Jia, HZ .(2018).In Situ Raman Probing of Chlorphenol Degradation on Different Facets of K3B6O10Br Single Crystal.JOURNAL OF PHYSICAL CHEMISTRY C,122(26),14574-14581.
MLA Fan, XY ,et al."In Situ Raman Probing of Chlorphenol Degradation on Different Facets of K3B6O10Br Single Crystal".JOURNAL OF PHYSICAL CHEMISTRY C 122.26(2018):14574-14581.
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