CHARACTERISTICS OF Pt DOPED TiO<sub>2</sub> AND TNTs PHOTOCATALYST AND COMPARISON OF THEIR PHOTOCATALYTIC PROPERTIES

LIU Nan-nan; LUO Shang-lian; SUN Hong-yu; QIU Chun-sheng; WANG Dong; CHI Jie; SUN Li-ping; NIE Ying-jin

doi:10.13205/j.hjgc.202002008

Volume 38 Issue 2

Feb. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(2): 63-69

LIU Nan-nan, LUO Shang-lian, SUN Hong-yu, QIU Chun-sheng, WANG Dong, CHI Jie, SUN Li-ping, NIE Ying-jin. CHARACTERISTICS OF Pt DOPED TiO2 AND TNTs PHOTOCATALYST AND COMPARISON OF THEIR PHOTOCATALYTIC PROPERTIES[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(2): 63-69. doi: 10.13205/j.hjgc.202002008

Citation:

LIU Nan-nan, LUO Shang-lian, SUN Hong-yu, QIU Chun-sheng, WANG Dong, CHI Jie, SUN Li-ping, NIE Ying-jin. CHARACTERISTICS OF Pt DOPED TiO₂ AND TNTs PHOTOCATALYST AND COMPARISON OF THEIR PHOTOCATALYTIC PROPERTIES[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(2): 63-69. doi: 10.13205/j.hjgc.202002008

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CHARACTERISTICS OF Pt DOPED TiO₂ AND TNTs PHOTOCATALYST AND COMPARISON OF THEIR PHOTOCATALYTIC PROPERTIES

doi: 10.13205/j.hjgc.202002008

1. Environmental Science and Engineering, Tianjin University, Tianjin 300350, China;
2. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;
3. Graduate Institute of Environmental Engineering, Taiwan University, Taibei 10673, China;
4. Tianjin Capital Environmental Protection Group Company Limited, Tianjin 300381, China

Received Date: 2019-04-21

Abstract

Abstract

The photocatalysts Pt/TNTs and Pt/TiO₂ were prepared by doping Pt by photodeposition method. Characterization of the catalysts was conducted by SEM, TEM, XRD and UV-Vis spectrophotometer. The effect of methanol concentration and Pt doping content on hydrogen production was investigated. And the hydrogen production efficiency of TiO₂, TNTs, Pt/TiO₂ and Pt/TNTs under UV-light (320~400 nm) and visible light (400~700 nm) was compared. The results showed that Pt doping shifted the photocatalysts absorbance into the visible light region. Because of the higher specific surface area of TNTs than TiO₂, more Pt could be loaded, which effectively transfered electronholes to the genus, reduced the probability of recombination of electrons and electrons holes, and increased the photocatalytic effect. Pt/TNTs showed higher hydrogen production efficiency under both UV-light and visible light. Under Pt doping proportion of 1%(by mass), the hydrogen production rate of Pt/TNTs could achieve 2331 μmol/h under UV light and 137.7 μmol/h under visible light with 20% methanol solution(by volume). Compared with other literatures, the visible-light photocatalytic hydrogen production system in this study had resonable development potential.
- photocatalysis,
- TNTs,
- Pt doping,
- hydrogen,
- methanol

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References(22)

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