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Photocatalytic degradation of tetracycline hydrochloride with visible light-responsive bismuth tungstate/conjugated microporous polymer 被引量:1
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作者 Fenghongkang Pan Yimeng Wang +3 位作者 Kaiqing Zhao Jun Hu Honglai Liu Ying Hu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第1期488-496,共9页
Conjugated microporous polymer(CMP)is an emerging organic semiconductor withπ-conjugated skeletons,and the bandgap of CMP can be flexibly modulated to harvest visible light.Based on the diversity and adjustability of... Conjugated microporous polymer(CMP)is an emerging organic semiconductor withπ-conjugated skeletons,and the bandgap of CMP can be flexibly modulated to harvest visible light.Based on the diversity and adjustability of monomers in CMP,we designed and synthesized donor-accepter(D-A)type BTNCMP through Sonogashira-Hagihara cross-coupling polymerization,further in-situ constructing series of inorganic/organic Z-scheme BW/BTN-n composite in the presence of Bi_(2)WO_(6).After optimization,the tetracycline hydrochloride(C0=10 mg·L^(-1))degradation efficiency reached 84%with BW/BTN-2 as catalyst in 90 min under visible light irradiation,the apparent rate constant k1 is 0.017 min^(-1),which is 1.7 and 5.7 times higher than bare Bi_(2)WO_(6) and BTN-CMP.X-ray photoelectron spectra and UV-Vis diffuse spectra showed that the enhanced photocatalytic activity originated from the tight heterojunction between Bi_(2)WO_(6) and BTN-CMP,which can extend the light absorption range and facilitate the separation and transport of photogenerated charges in the interface of heterojunction.The active species trapping experiments and electron spin resonance technique revealed that h+was the dominant active species during the photodegradation process of tetracycline hydrochloride(TCH).The present study demonstrated the feasibility to construct inorganic/organic composite for the photocatalytic degradation of environmental pollutants. 展开更多
关键词 PHOTOCHEMISTRY Degradation Visible light response Pollution Inorganic/organic heterojunction composite
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Heterojunction: important strategy for constructing composite photocatalysts 被引量:5
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作者 Xiaohan An Ying Wang +3 位作者 Jinjin Lin Jinni Shen Zizhong Zhang Xuxu Wang 《Science Bulletin》 SCIE EI CAS CSCD 2017年第9期599-601,共3页
As an ideal solution to energy and environment issues,conversion of sunlight into solar fuels by photocatalytic water splitting and greenhouse gas(CO_2)reduction has attracted keen research interest of multi-field sci... As an ideal solution to energy and environment issues,conversion of sunlight into solar fuels by photocatalytic water splitting and greenhouse gas(CO_2)reduction has attracted keen research interest of multi-field scientists.In the past four decades,a large number of semiconductor photocatalysts have been 展开更多
关键词 heterojunction:important strategy for constructing composite photocatalysts
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Solution-based processing of carbon nitride composite for boosted photocatalytic activities
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作者 Yile Chen Zhongshen Zhan +3 位作者 Jianhai Wang Yanfei Shen Songqin Liu Yuanjian Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2018年第3期437-440,共4页
Graphite-phase polymeric carbon nitride (CN) was reported to be a promising material in photoelectrochemical solar energy conversion. However, its high recombination rate of photogenerated carriers limits its potent... Graphite-phase polymeric carbon nitride (CN) was reported to be a promising material in photoelectrochemical solar energy conversion. However, its high recombination rate of photogenerated carriers limits its potential applications. In this article, a heterojunction of CN and sulfur-doped CN (CNS) was constructed through a solution-based processing way. Interestingly, it was observed that the photocatalytic hydrogen production of the as-prepared composite was 32.6 times higher than that of bulk carbon nitride and 2.3 times higher than that of the composites by conventional impregnating method. This study opens a new avenue to construct heterojunction of CN for large-scale industrial applications in environmental remediation. 展开更多
关键词 Graphitic carbon nitride heterojunction Composite Solution-based processing Photocatalytic hydrogen evolution
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