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                          今天是:

                          林海莉老师课题组在Science Bulletin杂志发表论文-2018.1.17

                          论文名称:Intensive photocatalytic activity enhancement of Bi5O7I via coupling with band structure and content ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?adjustable BiOBrxI1-x

                          作??? 者:Xin Li a, b, Tiedan Chen a, Haili Lin a, c, *, Jing Cao a, c, Hongwei Huang d, *, Shifu Chen a

                          单位:a College of Chemistry and Materials Science/Information College, Huaibei Normal University, Huaibei, Anhui, PR China, 235000

                          b State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong, PR China, 250100

                          c Anhui Key Laboratory of Energetic Materials, Huaibei, Anhui, PR China, 235000

                          d School of Materials Science and Technology, China University of Geosciences, Beijing, PR China, 100083

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                          摘要:Band structure and component content are the key factors for determining the activity of semiconductor heterojunction. In this study, a novel Bi5O7I/BiOBrxI1-x heterostructure was synthesized by a simple hydrobromic (HBr) acid etching method through transforming partial of Bi5O7I to I- ion doped BiOBr (BiOBrxI1-x) at room temperature without adding extra dopant. Both the band structure and component content of Bi5O7I/BiOBrxI1-x alter with the additive HBr acid. The Bi5O7I/BiOBrxI1-x (S3.0) sample exhibits the best photocatalytic activity, 6 times higher than that of pure Bi5O7I, for the degradation of methyl orange under visible-light (l>420 nm). The activity enhancement of Bi5O7I/BiOBrxI1-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.

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                          Graphical abstract:

                          影响因子:4.000

                          分区情况:SCI三区

                          论文链接:http://www.sciencedirect.com/science/article/pii/S2095927317306357

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