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- W2017884603 abstract "A hydrothermal method without post-calcination was successfully developed to obtain high-efficiency Pr, N, P-tridoped anatase-TiO2 (PrNPTO) nano-photocatalyst based on TiCl4 hydrolysis in aqueous solution. The samples were characterized by X-ray diffraction, transmission electron microscopy, N2 adsorption–desorption isotherm, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, thermogravimetry and differential thermoanalysis, UV–vis absorbance spectroscopy, and photoluminescence spectroscopy measurements. Results showed that among as-synthesized undoped and doped samples, PrNPTO presented the highest photoactivity for 4-chlorophenol (4-CP) degradation under simulated sunlight irradiation (Kapp = 0.0603 min−1), which was 5.15 times that of commercial P25 TiO2 (Kapp = 0.0117 min−1). TOC removal rate for 4-CP solution (20 mg L−1) in the presence of PrNPTO (0.8 g L−1) reached 76.9% after 120 min irradiation, indicating that 4-CP was mineralized efficiently. Radical scavenging experiments indicated that OH in the solution was main reactive species, but photogenerated electrons also played a minor role by finally transformed OH. Enhanced photoactivity of PrNPTO was attributed to the increased UV light absorption, reduced photogenerated e−/h+ recombination, higher surface hydroxyl content, as well as improved surface textural properties. PrNPTO was reused many times without obvious diminution of photoactivity, which extends the practical application of TiO2." @default.
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- W2017884603 date "2014-07-01" @default.
- W2017884603 modified "2023-09-23" @default.
- W2017884603 title "Hydrothermal synthesis of high-efficiency Pr, N, P-tridoped TiO2 from TiCl4 hydrolysis and mechanism of its enhanced photoactivity" @default.
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- W2017884603 doi "https://doi.org/10.1016/j.jallcom.2014.02.083" @default.
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