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学科主题物理化学
Effects of Zn2+ and Pb2+ dopants on the activity of Ga2O3-based photocatalysts for water splitting
Wang, Xiang; Shen, Shuai; Jin, Shaoqing; Yang, Jingxiu; Li, Mingrun; Wang, Xiuli; Han, Hongxian; Li, Can; Li C(李灿)
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2013
DOI10.1039/c3cp53333f
15期:44页:19380-19386
收录类别SCI
合作性质
文章类型Article
部门归属5
项目归属503
产权排名待补充
WOS标题词Science & Technology ; Physical Sciences
资助者1,1 ; 1,1 ; 1,1 ; 1,1
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
关键词[WOS]VISIBLE-LIGHT IRRADIATION ; RESOLVED INFRARED-ABSORPTION ; BOND-VALENCE DETERMINATION ; PB(II) SORPTION PRODUCTS ; SURFACE COMPLEXATION ; HYDROGEN-PRODUCTION ; O-2 EVOLUTION ; NATAO3 PHOTOCATALYSTS ; SRTIO3 PHOTOCATALYSTS ; GA2O3 PHOTOCATALYST
英文摘要Zn-doped and Pb-doped beta-Ga2O3-based photocatalysts were prepared by an impregnation method. The photocatalyst based on the Zn-doped beta-Ga2O3 shows a greatly enhanced activity in water splitting while the Pb-doped beta-Ga2O3 one shows a dramatic decrease in activity. The effects of Zn2+ and Pb2+ dopants on the activity of Ga2O3-based photocatalysts for water splitting were investigated by HRTEM, XPS and time-resolved IR spectroscopy. A ZnGa2O4-beta-Ga2O3 heterojunction is formed in the surface region of the Zn-doped beta-Ga2O3 and a slower decay of photogenerated electrons is observed. The ZnGa2O4-beta-Ga2O3 heterojunction exhibits type-II band alignment and facilitates charge separation, thus leading to an enhanced photocatalytic activity for water splitting. Unlike Zn2+ ions, Pb2+ ions are coordinated by oxygen atoms to form polyhedra as dopants, resulting in distorted surface structure and fast decay of photogenerated electrons of beta-Ga2O3. These results suggest that the Pb dopants act as charge recombination centers expediting the recombination of photogenerated electrons and holes, thus decreasing the photocatalytic activity.
语种英语
资助者1,1 ; 1,1 ; 1,1 ; 1,1
原文出处查看原文
WOS记录号WOS:000326220000034
引用统计
被引频次:59[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/119573
专题中国科学院大连化学物理研究所
通讯作者Li C(李灿)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
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GB/T 7714
Wang, Xiang,Shen, Shuai,Jin, Shaoqing,et al. Effects of Zn2+ and Pb2+ dopants on the activity of Ga2O3-based photocatalysts for water splitting[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2013,15(44):19380-19386.
APA Wang, Xiang.,Shen, Shuai.,Jin, Shaoqing.,Yang, Jingxiu.,Li, Mingrun.,...&李灿.(2013).Effects of Zn2+ and Pb2+ dopants on the activity of Ga2O3-based photocatalysts for water splitting.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,15(44),19380-19386.
MLA Wang, Xiang,et al."Effects of Zn2+ and Pb2+ dopants on the activity of Ga2O3-based photocatalysts for water splitting".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 15.44(2013):19380-19386.
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