Band-gap tailoring and visible-light-driven photocatalytic performance of porous (GaN)(1-x)(ZnO)(x) solid solution

IMR OpenIR

	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
发表期刊	ROYAL SOC CHEMISTRY
ISSN	1477-9226
卷号	46 期号:8 页码:2643-2652
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.; (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
学科领域	Chemistry, Inorganic & Nuclear
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]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79185
专题	中国科学院金属研究所
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.
推荐引用方式 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.