期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 112, 期 41, 页码 16046-16051出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp805475a
关键词
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资金
- National Natural Science Foundation of China [20537010, 20677009, 20773024]
- National Basic Research Program of China [2007CB613306, 2007CB616907, 2006-AA03Z340]
- Fujian Province [E0710009, 2005HZ1008]
- New Century Excellent Talents in University [NCET-05-0572]
- State Education Ministry of the People's Republic of China
Nanocrystalline Zn-doped and Cu-doped In(OH)(y)S-z solid solutions were synthesized from In(NO3)(3), thiourea, and M(NO3)(2) (M = Zn and Cu) in an aqueous solution of ethylenediamine via a facile hydrothermal method. The samples were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), and X-ray photoelectron spectroscopy (XPS). Although both Zn-doped and Cu-doped In(OH)(y)S-z solid solutions show visible-light-driven photocatalytic activities in the decomposition of acetone and typical dye like RhB, their photocatalytic performance is quite different. Cu-doped In(OH,,S, solid solution can only decompose acetone and RhB to intermediates, but cannot mineralize them. On the contrary, Zn-doped In(OH),,S, solid solution can mineralize acetone and RhB to CO2 and its photocatalytic activity is a little enhanced compared to that of the undoped In(OH)(y)S-z. solid solution. Density functional theory (DFT) calculations on Zn-doped and Cu-doped In(OH)(y)S-z solid solutions reveal that the introduction of M2+ (M = Zn and Cu) into In(OH)(y)S-z solid solution influences the electronic structure. The different photocatalytic performance observed on Zn-doped and Cu-doped In(OH)(y)S-z solid solutions can be well explained by their different electronic structures.
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