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Band-gap tailoring and visible-light-driven photocatalytic performance of porous (GaN)(1-x)(ZnO)(x) solid solution
Wu, Aimin; Li, Jing; Liu, Baodan; Yang, Wenjin; Jiang, Yanan; Liu, Lusheng; Zhang, Xinglai; Xiong, Changmin; Jiang, Xin; 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.
2017-02-28
Source PublicationROYAL SOC CHEMISTRY
ISSN1477-9226
Volume46Issue:8Pages:2643-2652
Abstract(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.; (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.
description.department[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
Subject AreaChemistry, Inorganic & Nuclear
Funding OrganizationNational 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]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79185
Collection中国科学院金属研究所
Corresponding AuthorLiu, 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.
Recommended Citation
GB/T 7714
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.
APA Wu, Aimin.,Li, Jing.,Liu, Baodan.,Yang, Wenjin.,Jiang, Yanan.,...&Xiong, CM .(2017).Band-gap tailoring and visible-light-driven photocatalytic performance of porous (GaN)(1-x)(ZnO)(x) solid solution.ROYAL SOC CHEMISTRY,46(8),2643-2652.
MLA Wu, Aimin,et al."Band-gap tailoring and visible-light-driven photocatalytic performance of porous (GaN)(1-x)(ZnO)(x) solid solution".ROYAL SOC CHEMISTRY 46.8(2017):2643-2652.
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