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Defect-Modified Ultrathin BiOX (X = Cl, Br) Nanosheets Via a Top-Down Approach with Effective Visible-Light Photocatalytic Degradation

文献类型：期刊论文

作者Yuan, Qinglin1,2,3,4; Wei, Shuxian1,2; Hu, Taiping1,2,3; Ye, Yixing1,2; Cai, Yunyu1,2; Liu, Jun1,2; Li, Pengfei1,2; Liang, Changhao1,2,3
刊名JOURNAL OF PHYSICAL CHEMISTRY C
出版日期2021-09-02
卷号125
ISSN号1932-7447
DOI10.1021/acs.jpcc.1c02950
通讯作者Li, Pengfei(pfli@issp.ac.cn) ; Liang, Changhao(chliang@issp.ac.cn)
英文摘要Resizing and engineering defects of two-dimensional (2D) layered semiconductors is of considerable importance for improving their photocatalytic performance. We, herein, report first a top-down strategy for synthesizing ultrathin BiOX (X = Cl, Br) nanosheets (NSs) with reducing size and engineering surface oxygen vacancies simultaneously, which is known as laser irradiation in liquid technique. The oxygen vacancies are spontaneously introduced during the regrowth of broken BiOX molecules and ions into ultrathin nanosheets. The electronic structure calculations reveal the alteration of the electronic structure induced by surface oxygen vacancies, which is well consistent with UV-vis absorption spectra. The further formation energy calculations suggest that the surface oxygen vacancies are abundant even under an O-rich condition. Importantly, the engineered ultrathin BiOX NSs exhibit excellent visible-light photocatalytic performances on the degradation of rhodamine B (RhB). Detailed investigations attribute the excellent performance mainly to the surface oxygen vacancies. On the one hand, it captures O-2 molecules as reactive oxygen species (O-center dot(2)-). On the other hand, it modulates the electronic structure of ultrathin BiOX NSs, leading to the promotion of visible-light absorption and enhancement of the oxidation ability of holes. Our strategy opens up a new pathway to engineer structures and defects of 2D layered nanomaterials, which, in turn, could encourage potential applications.
WOS关键词MOLECULAR-OXYGEN ACTIVATION ; OPTICAL-PROPERTIES ; 001 FACETS ; NANOPARTICLES ; PLASMON ; FRAGMENTATION ; OXIDATION ; LIQUID ; CO2
资助项目National Natural Science Foundation of China (NSFC)[11604320] ; National Natural Science Foundation of China (NSFC)[51571186] ; National Natural Science Foundation of China (NSFC)[51971211] ; Key Research and Development Program of Anhui Province[201904a05020049] ; China Postdoctoral Science Foundation[2020M681293] ; China Postdoctoral Science Foundation[2020TQ0189]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000693413400009
资助机构National Natural Science Foundation of China (NSFC) ; Key Research and Development Program of Anhui Province ; China Postdoctoral Science Foundation
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/125353]  
专题中国科学院合肥物质科学研究院
通讯作者Li, Pengfei; Liang, Changhao
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Mat Phys, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
4.Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Qinglin,Wei, Shuxian,Hu, Taiping,et al. Defect-Modified Ultrathin BiOX (X = Cl, Br) Nanosheets Via a Top-Down Approach with Effective Visible-Light Photocatalytic Degradation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2021,125.
APA Yuan, Qinglin.,Wei, Shuxian.,Hu, Taiping.,Ye, Yixing.,Cai, Yunyu.,...&Liang, Changhao.(2021).Defect-Modified Ultrathin BiOX (X = Cl, Br) Nanosheets Via a Top-Down Approach with Effective Visible-Light Photocatalytic Degradation.JOURNAL OF PHYSICAL CHEMISTRY C,125.
MLA Yuan, Qinglin,et al."Defect-Modified Ultrathin BiOX (X = Cl, Br) Nanosheets Via a Top-Down Approach with Effective Visible-Light Photocatalytic Degradation".JOURNAL OF PHYSICAL CHEMISTRY C 125(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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