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| 1 | Intensive photocatalytic activity enhancement of Bi5O7I via coupling with band structure and content adjustable BiOBrxI1-x显示文摘Band structure and component content are the key factors for determining the activity of semiconductor heterojunction. In this study, a novel Bi_5O_7I/BiOBr_xI_(1-x)heterostructure was synthesized by a simple hydrobromic(HBr) acid etching method through transforming partial of Bi_5O_7I to Iàion doped Bi OBr(BiOBr_xI_(1-x)) at room temperature without adding extra dopant. Both the band structure and component content of Bi_5O_7I/BiOBr_xI_(1-x)alter with the additive HBr acid. The Bi_5O_7I/BiOBr_xI_(1-x)(S3.0) sample exhibits the best photocatalytic activity, 6 times higher than that of pure Bi_5O_7I, for the degradation of methyl orange under visible-light(λ > 420 nm). The activity enhancement of Bi_5O_7I/BiOBr_xI_(1-x)is primarily ascribed to the improved separation efficiency of photocharges, originated from the adjustable band structure and component content. The significant findings of this paper provide a facile way to construct highly efficient semiconductor heterojunction via playing the synergetic effect of adjustable band structure and component content for purifying organic pollutants in wastewater. | Xin Li Tiedan Chen Haili Lin Jing Cao Hongwei Huang Shifu Chen | 2018 | Science Bulletin2018，63，4： | 1 |
| 2 | 多孔有机聚合物异相光催化研究现状及进展显示文摘异相催化方式相对于均相催化展现出优异的分离和回收性能,而被研究人员广泛开发和利用。多孔有机聚合物作为一种新型多孔高分子功能材料,因其稳定的共轭骨架、高比表面积和设计合成的高灵活性,广泛应用于气体吸附分离、检测和(光)催化等领域。材料的捕光及不溶特性亦使其在异相光催化领域展现了出色的催化能力,在能源和环境方面也显示出巨大的潜力。围绕此类材料在异相光催化领域的研究及发展现状,分析了光催化的优势和困境,并结合光催化方式提出多孔有机聚合物提高光催化效率的有效措施。 | 刘雨 俞润炜 俞明浩 窦越 刘洁 | 2020 | 化工新型材料2020，48，9： | 0 |
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