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BiOI-110/DCN heterojunction 1

ZnFe2O4 deposited BiOCl 1

composite photocatalyst 1

cyclohexanol 1

facet 1

high-exposure (110) facet 1

oxygen vacancy-rich 1

photocatalytic degradation 1

reduction of CO2 1

visible-light-response 1

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Crystal design of bismuth oxyiodide with highly exposed (110) facets on curved carbon nitride for the photocatalytic degradation of pollutants in wastewater

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1125-1138 doi: 10.1007/s11705-021-2116-0

Abstract: Crystalline materials with specific facet atomic arrangements and crystal facet structures exhibit uniquefunctions according to their facet effects, quantum size effects and physical and chemical propertiesIn this study, a novel high-exposure (110) facet of bismuth oxyiodide (BiOI) was prepared (denoted asBiOI-110), and designed as nanosheets rich in oxygen vacancies by crystal facet design and regulationOverall, crystal facet design has been proven to have broad prospects in improving the water environment

Keywords： high-exposure (110) facet     oxygen vacancy-rich     BiOI-110/DCN heterojunction     photocatalytic degradation    

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ZnFe2O4 deposited on BiOCl with exposed (001) and (010) facets for photocatalytic reduction of CO2 in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 197-204 doi: 10.1007/s11705-016-1606-y

Abstract: ZnFe O -BiOCl composites were prepared by both hydrothermal and direct precipitation processes and the structures and properties of the samples were characterized by various instrumental techniques. The samples were then used as catalysts for the photocatalytic reduction of CO in cyclohexanol under ultraviolet irradiation to give cyclohexanone (CH) and cyclohexyl formate (CF). The photocatalytic CO reduction activities over the hydrothermally prepared ZnFe O -BiOCl composites were higher than those over the directly-precipitated composites. This is because compared to the direct-precipitation sample, the ZnFe O nanoparticles in the hydrothermal sample were smaller and more uniformly distributed on the surface of BiOCl and so more heterojunctions were formed. Higher CF and CH yields were obtained for the pure BiOCl and BiOCl composite samples with more exposed (001) facets than for the samples with more exposed (010) facets. This is due to the higher density of oxygen atoms in the exposed (001) facets, which creates more oxygen vacancies, and thereby improves the separation efficiency of the electron-hole pairs. More importantly, irradiation of the (001) facets with ultraviolet light produces photo-generated electrons which is helpful for the reduction of CO to ·CO . The mechanism for the photocatalytic reduction of CO in cyclohexanol over ZnFe O -BiOCl composites with exposed (001) facets involves electron transfer and carbon radical formation.

Keywords： reduction of CO2     cyclohexanol     ZnFe2O4 deposited BiOCl     facet     composite    

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Title Author Date Type Operation

Crystal design of bismuth oxyiodide with highly exposed (110) facets on curved carbon nitride for the photocatalytic degradation of pollutants in wastewater

Journal Article

ZnFe2O4 deposited on BiOCl with exposed (001) and (010) facets for photocatalytic reduction of CO2 in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

Journal Article