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论文类型：期刊论文

发表时间：2016-09-01

发表刊物：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录刊物：SCIE、EI、Scopus

卷号：4

期号：9

页面范围：4554-4562

ISSN号：2168-0485

关键字：Photocatalysis; ZnFe2O4/In2O3; Nanoheterostructures; 1,2-Dichlorobenzene; In situ FTIR

摘要：Novel ZnFe2O4/In2O3 hybrid nanoheterostructures with enhanced visible-light catalytic performance were fabricated by assembling ZnFe2O4 nanoparticles on the surface of monodispersed In2O3 nanospheres, and their photocatalytic performances were evaluated via the degradation of gaseous 1,2-dichlorobenzene (o-DCB). The catalytic activity of the resulting heterostructures for degradation of o-DCB was higher than that of either pure In2O3 or ZnFe2O4. The enhanced activity was mainly ascribed to the enhanced visible-light harvesting ability, efficient spatial separation, and prolonged lifetimes of photogenerated charges. Meanwhile, the main reaction intermediates including o-benzoquinone type species, phenolate species, formates, acetates, and maleates were verified with in situ FTIR spectroscopy. Additionally, a tentative catalytic reaction mechanism and the generation pathway of (OH)-O-center dot over the ZnFe2O4/In2O3 nanoheterostructures were postulated. The present work provides some significative information for the eradication of harmful chlorinated volatile organic compounds and is expected to benefit the development of In2O3-based hybrid heterostructures.