期刊
INORGANIC CHEMISTRY
卷 52, 期 7, 页码 3884-3890出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic3026182
关键词
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资金
- National Science Foundation [CBET-1150617]
- U of Chicago Argonne, LLC [DE-AC02-06CH11357]
- U.S. Department of Energy [DE-AC02-06CH11357]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1150617] Funding Source: National Science Foundation
TiO2, in the rutile phase with a high concentration of self-doped Ti3+, has been synthesized via a facile, all inorganic-based, and scalable method of oxidizing TiH2 in H2O2 followed by calcinations in Ar gas. The material was shown to be photoactive in the visible-region of the electromagnetic spectrum. Powdered X-ray diffraction (PXRD), transmission electron microscopy (TEM), ultraviolet-visible-near-infrared (UV-vis-NIR), diffuse reflectance spectroscopy (DRS), and Brunauer-Emmett-Teller (BET) methods were used to characterize the crystalline, structural, and optical properties and specific surface area of the assynthesized Ti3+-doped rutile, respectively. The concentration of Ti3+ was quantitatively studied by electron paramagnetic resonance (EPR) to be as high as one Ti3+ per similar to 4300 Ti4+. Furthermore, methylene blue (MB) solution and an industry wastewater sample were used to examine the photocatalytic activity of the Ti3+-doped TiO2 which was analyzed by UV-vis absorption, Fourier transform infrared spectroscopy (FT-IR), and electrospray ionization mass spectrometry (ESI-MS). In comparison to pristine anatase TiO2, our Ti3+ self-doped rutile sample exhibited remarkably enhanced visible-light photocatalytic degradation on organic pollutants in water.
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