Citation: Qian Li, Yunni Liu, Zhe Wan, Haiyan Cao, Shao Zhang, Yue Zhou, Xingyu Ye, Xiaoyan Liu, Dieqing Zhang. Microwave-assisted synthesis of oxygen vacancy associated TiO₂ for efficient photocatalytic nitrate reduction[J]. Chinese Chemical Letters, ;2022, 33(8): 3835-3841. doi: 10.1016/j.cclet.2021.12.025 shu

Microwave-assisted synthesis of oxygen vacancy associated TiO₂ for efficient photocatalytic nitrate reduction

Qian Li ^{a, 1} ,
Yunni Liu ^{b, 1} ,
Zhe Wan ^a ,
Haiyan Cao ^a ,
Shao Zhang ^a ,
Yue Zhou ^a ,
Xingyu Ye ^a ,
Xiaoyan Liu ^{a, *,} ,
Dieqing Zhang ^{a, *,}

a.
The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
b.
School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China

xyliu@shnu.edu.cn

dqzhang@shnu.edu.cn

Received Date: 27 September 2021
Revised Date: 6 November 2021
Accepted Date: 11 December 2021
Available Online: 17 December 2021

Figures(11)

The solar-driven photocatalytic technology has shown great potential in nitrate (NO₃⁻) pollutants reduction, however, it has been greatly hindered by the complex preparation and high cost of photocatalysts. Herein, a relatively low-cost photocatalyst, rutile and anatase mixed phase TiO₂ was synthesized by a facile microwave-hydrothermal method. Meanwhile, oxygen vacancy is successfully generated, leading to an acidic surface for strong adsorption towards NO₃⁻, which further improved the reduction activity. Compared with the commercial P25, a higher NO₃⁻ conversion of ca. 100% and nitrogen (N₂) selectivity of 87% were achieved under UV (365 nm) irradiation within 2 h. This research provides a promising strategy for designing efficient noble metal free photocatalyst in the NO₃⁻ reduction.
- Photocatalysis,
- TiO₂,
- Oxygen vacancy,
- Nitrate reduction
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沈阳化工大学材料科学与工程学院沈阳 110142

Microwave-assisted synthesis of oxygen vacancy associated TiO2 for efficient photocatalytic nitrate reduction

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通讯作者: 陈斌, bchen63@163.com

Microwave-assisted synthesis of oxygen vacancy associated TiO₂ for efficient photocatalytic nitrate reduction