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学科主题物理化学
Promoting Effect of Electrostatic Interaction between a Cobalt Catalyst and a Xanthene Dye on Visible-Light-Driven Electron Transfer and Hydrogen Production
Dong, Jingfeng1; Wang, Mei1; Zhang, Pan1; Yang, Songqiu2; Liu, Jianyong2; Li, Xueqiang1; Sun, Licheng1,3; LichengSun
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2011-08-04
ISSN待补充
DOI10.1021/jp2040778
115期:30页:15089-15096
收录类别SCI
文章类型Article
部门归属11
项目归属1101
产权排名2,4
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]ROSE-BENGAL ; ACTIVE-SITE ; SUPRAMOLECULAR PHOTOCATALYST ; ARTIFICIAL PHOTOSYNTHESIS ; HOMOGENEOUS CATALYSIS ; COBALOXIME CATALYSTS ; MOLECULAR-HYDROGEN ; WATER REDUCTION ; MODEL COMPLEX ; SYSTEM
英文摘要Promoting Effect of Electrostatic Interaction between a Cobalt Catalyst and a Xanthene Dye on Visible-Light-Driven Electron Transfer and Hydrogen Production; The readily obtained noble-metal-free molecular catalyst systems, with xanthene dyes (Rose Bengal, RB(2-); Eosin Y, EY(2-); and Eosin B, EB(2-)) as photosensitizers, [Co(bpy)(3)]Cl(2) as catalyst, and triethylamine as sacrificial electron donor, are highly active for visible-light-driven (lambda > 450 nm) hydrogen production from water. The turnover frequency is up to 54 TON/min versus RB(2-) with a RB(2-)/[Co(bpy)(3)]Cl(2) molar ratio of 1:10 in CH(3)CN/H(2)O under optimal conditions in the first half hour of irradiation (lambda > 450 rim), and the turnover number is up to 2076 versus RB(2-). Comparative studies show the following: (1) The photocatalytic H(2)-evolving activity of the cationic cobalt complex [Co(bpy)(3)]Cl(2), is apparently higher than the neutral cobaloxime complexes with xanthene dyes as potosensitizers, and also much higher than the analogous system of [Ru(bpy)(3)]Cl(2)/[Co(bpy)(3)]Cl(2). (2) The UV-vis absorptions of xanthene dyes are red shifted to different extents upon addition of [Co(bpy)(3)]Cl(2) to the aqueous or CH(3)CN/H(2)O solutions of these dyes, while no change was observed in UV-vis absorptions of photosensitizer with addition of the cobaloximes to the aqueous solution of RB(2-) or addition of [Co(bpy)(3)]Cl(2) to the aqueous solution of [Ru(bpy)(3)]Cl(2). (3) The fluorescence of RB(2-) is significantly quenched by [Co(bpy)(3)]Cl(2), but not by the cobaloximes. These special performances of [Co(bpy)(3)]Cl(2) are attributed to the electrostatically attractive interaction between the anionic organic dyes and the cationic cobalt catalyst. The probable mechanism for photoinduced hydrogen production catalyzed by the system of RB(2-), [Co(bpy)(3)]Cl(2), and triethylamine is discussed in detail on the basis of fluorescence. fand transient absorption spectroscopic studies. "
语种英语
WOS记录号WOS:000293192100081
引用统计
被引频次:46[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/321008/115376
专题中国科学院大连化学物理研究所
通讯作者LichengSun
作者单位1.Dalian Univ Technol, State Key Lab Fine Chem, DUT KTH Joint Educ & Res Ctr Mol Devices, Dalian 116024, Peoples R China
2.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Royal Inst Technol, Dept Chem, S-10044 Stockholm, Sweden
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GB/T 7714
Dong, Jingfeng,Wang, Mei,Zhang, Pan,et al. Promoting Effect of Electrostatic Interaction between a Cobalt Catalyst and a Xanthene Dye on Visible-Light-Driven Electron Transfer and Hydrogen Production[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(30):15089-15096.
APA Dong, Jingfeng.,Wang, Mei.,Zhang, Pan.,Yang, Songqiu.,Liu, Jianyong.,...&LichengSun.(2011).Promoting Effect of Electrostatic Interaction between a Cobalt Catalyst and a Xanthene Dye on Visible-Light-Driven Electron Transfer and Hydrogen Production.JOURNAL OF PHYSICAL CHEMISTRY C,115(30),15089-15096.
MLA Dong, Jingfeng,et al."Promoting Effect of Electrostatic Interaction between a Cobalt Catalyst and a Xanthene Dye on Visible-Light-Driven Electron Transfer and Hydrogen Production".JOURNAL OF PHYSICAL CHEMISTRY C 115.30(2011):15089-15096.
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