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题名: Band-gap tailoring and visible-light-driven photocatalytic performance of porous (GaN)(1-x)(ZnO)(x) solid solution
作者: Wu, Aimin;  Li, Jing;  Liu, Baodan;  Yang, Wenjin;  Jiang, Yanan;  Liu, Lusheng;  Zhang, Xinglai;  Xiong, Changmin;  Jiang, Xin
通讯作者: Liu, BD;  Jiang, X (reprint author), Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci SYNL, 72 Wenhua Rd, Shenyang 110016, Peoples R China.;  Xiong, CM (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
发表日期: 2017-2-28
学科主题: Chemistry, Inorganic & Nuclear
摘要: (GaN)(1-x)(ZnO)(x) solid solution has attracted extensive attention due to its feasible band-gap tunability and excellent photocatalytic performance in overall water splitting. However, its potential application in the photodegradation of organic pollutants and environmental processing has rarely been reported. In this study, we developed a rapid synthesis process to fabricate porous (GaN)(1-x)(ZnO)(x) solid solution with a tunable band gap in the range of 2.38-2.76 eV for phenol photodegradation. Under visible-light irradiation, (GaN)(0.75)(ZnO)(0.25) solid solution achieved the highest photocatalytic performance compared to other (GaN)(1-x)(ZnO)(x) solid solutions with x = 0.45, 0.65 and 0.85 due to its higher redox capability and lower lattice deformation. Slight Ag decoration with a content of 1 wt% on the surface of the (GaN)(0.75)(ZnO)(0.25) solid solution leads to a significant enhancement in phenol degradation, with a reaction rate eight times faster than that of pristine (GaN)(0.75)(ZnO)(0.25). Interestingly, phenol in aqueous solution (10 mg L-1) can also be completely degraded within 60 min, even under the direct exposure of sunlight irradiation. The photocurrent response indicates that the enhanced photocatalytic activity of (GaN)(0.75)(ZnO)(0.25)/Ag is directly induced by the improved transfer efficiency of the photogenerated electrons at the interface. The excellent phenol degradation performance of (GaN)(1-x)(ZnO)(x)/Ag further broadens their promising photocatalytic utilization in environmental processing, besides in overall water splitting for hydrogen production.
资助者: National Natural Science Foundation of China [11474024]; Knowledge Innovation Program of Institute of Metal Research [Y2NCA111A1, Y3NCA111A1]; Youth Innovation Promotion Association, Chinese Academy of Sciences [Y4NC711171]; 13th Five-Year National Key Research Projects [2016YFB0101206]; Fundamental Research Funds for the Central Universities [DUT15LAB05]
英文摘要: (GaN)(1-x)(ZnO)(x) solid solution has attracted extensive attention due to its feasible band-gap tunability and excellent photocatalytic performance in overall water splitting. However, its potential application in the photodegradation of organic pollutants and environmental processing has rarely been reported. In this study, we developed a rapid synthesis process to fabricate porous (GaN)(1-x)(ZnO)(x) solid solution with a tunable band gap in the range of 2.38-2.76 eV for phenol photodegradation. Under visible-light irradiation, (GaN)(0.75)(ZnO)(0.25) solid solution achieved the highest photocatalytic performance compared to other (GaN)(1-x)(ZnO)(x) solid solutions with x = 0.45, 0.65 and 0.85 due to its higher redox capability and lower lattice deformation. Slight Ag decoration with a content of 1 wt% on the surface of the (GaN)(0.75)(ZnO)(0.25) solid solution leads to a significant enhancement in phenol degradation, with a reaction rate eight times faster than that of pristine (GaN)(0.75)(ZnO)(0.25). Interestingly, phenol in aqueous solution (10 mg L-1) can also be completely degraded within 60 min, even under the direct exposure of sunlight irradiation. The photocurrent response indicates that the enhanced photocatalytic activity of (GaN)(0.75)(ZnO)(0.25)/Ag is directly induced by the improved transfer efficiency of the photogenerated electrons at the interface. The excellent phenol degradation performance of (GaN)(1-x)(ZnO)(x)/Ag further broadens their promising photocatalytic utilization in environmental processing, besides in overall water splitting for hydrogen production.
部门归属: [Wu, Aimin;  Li, Jing] Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China;  [Li, Jing;  Liu, Baodan;  Yang, Wenjin;  Jiang, Yanan;  Liu, Lusheng;  Zhang, Xinglai;  Jiang, Xin] Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci SYNL, 72 Wenhua Rd, Shenyang 110016, Peoples R China;  [Xiong, Changmin] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
刊名: ROYAL SOC CHEMISTRY
收录类别: SCI
内容类型: 期刊论文
URI标识: http://ir.imr.ac.cn/handle/321006/79185
ISSN号: 1477-9226
语种: 英语
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Wu, Aimin,Li, Jing,Liu, Baodan,et al. Band-gap Tailoring And Visible-light-driven Photocatalytic Performance Of Porous (gan)(1-x)(zno)(x) Solid Solution[J]. Royal Soc Chemistry,2017,46(8):2643-2652.

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