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论文名称：Diaza-substitution on dibenzothiophene sulfone-based linear conjugated polymers for highly efficient visible-light photo-catalytic hydrogen evolution via substituted-position optimization

发表刊物：Dyes and Pigments

刊物所在地：Elsevier

摘要：Two linear conjugated polymers (FSO-TPmT and FSO-TPzT) were synthesized based on dibenzothiophene sulfone and diaza-substituted thiophene-benzene-thiophene with different substituted positions (1,3-diaza-substitution and 1,4-diaza-substitution) for photo-catalytic hydrogen evolution. The 1,2-diaza-substituted polymer (FSO-TPaT) reported from previous work was also used for comparison. The diaza-substitution significant affected the optical properties, exciton lifetime, charge transport resistance, photo-current response, and thus photo-catalytic performances. Conjugated polymers with 1,3-diaza-substitution exhibited the best photo-catalytic performances with the hydrogen evolution rates (HERs) of 7645 μmol g−1 h−1 and 7280 μmol g−1 h−1 under UV–Vis (>295 nm) and visible light (>420 nm) irradiation, respectively. Moreover, the photo-catalytic performance was further optimized by loading 3 wt% Pt with a HER of 9828 μmol g−1 h−1. The apparent quantum yields were 5.8% and 3.9% at 420 nm and 500 nm, respectively. These results indicated that the conjugated polymer with 1,3-diaza-substitution was mainly active under visible light and should be an excellent visible-light photo-catalyst for hydrogen evolution from water.

第一作者：Shuyu Fang

通讯作者：Zuoli He,Guobing Zhang

全部作者：Meng Dai,Ruikun Chen,Yunsheng Ding

论文类型：期刊论文

学科门类：工学

一级学科：环境科学与工程

文献类型：J

卷号：207

页面范围：110645

DOI码：10.1016/j.dyepig.2022.110645

字数：4000

是否译文：否

发表时间：2022-08

收录刊物：SCI

发布期刊链接：https://doi.org/10.1016/j.dyepig.2022.110645

发布时间：2022-08-08