Citation: Jinyan Xiong, Mengmeng Zhang, Mengjie Lu, Kai Zhao, Chao Han, Gang Cheng, Zhipan Wen. Achieving simultaneous Cu particles anchoring in meso-porous TiO₂ nanofabrication for enhancing photo-catalytic CO₂ reduction through rapid charge separation[J]. Chinese Chemical Letters, ;2022, 33(3): 1313-1316. doi: 10.1016/j.cclet.2021.07.052 shu

Achieving simultaneous Cu particles anchoring in meso-porous TiO₂ nanofabrication for enhancing photo-catalytic CO₂ reduction through rapid charge separation

Jinyan Xiong ^a ,
Mengmeng Zhang ^b ,
Mengjie Lu ^a ,
Kai Zhao ^c ,
Chao Han ^d ,
Gang Cheng ^b ,
Zhipan Wen ^{b, *,}

a.
College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Biomass Fibers and Ecodyeing & Finishing, Wuhan Textile University, Wuhan 430200, China
b.
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
c.
School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
d.
Australia School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW 2007, Australia

zhipanwen2016@163.com

Received Date: 26 May 2021
Revised Date: 20 June 2021
Accepted Date: 24 July 2021
Available Online: 30 July 2021
Fund Project: the National Natural Science Foundation of China 22102122the Hubei Provincial Natural Science Foundation 2019CFB386the Central Committee Guides Local Science and Technology Development Special Project of Hubei Province 2019ZYYD073

Figures(5)

A facile solvo-thermal approach was successfully employed to prepare titanium oxide (TiO₂) nano-aggregates with simultaneous copper particles anchoring. The as-synthesized composite could convert CO₂ into CH₄ and CO products under simulated solar irradiation. The impact of copper loading amounts on the photo-reduction capability was evaluated. It was found proper amount of Cu loading could enhance the activity of CO₂ photo-reduction. As a result, the optimal composite (TiO₂-Cu-5%) consisting of TiO₂ supported with 5% (mole ratio) Cu exhibits 2.2 times higher CH₄ yield and 3 times higher CO yield compared with pure TiO₂. Conduction band calculated from the band gap and valence X-ray photoelectron spectroscopy (XPS) indicated TiO₂ nano-aggregates have suitable band edge alignment with respect to the CO₂/CH₄ and CO₂/CO redox potential. Furthermore, with involving of Cu particles, an efficient separation of photo-generated charges was achieved on the basis of photocurrent response and photoluminescence spectra results, which contributed to the improved photo-catalytic performance. The present work suggested that the Cu-decorated TiO₂ could serve as an efficient photo-catalyst for solar-driven CO₂ photo-reduction.
- TiO₂,
- Copper,
- Photo-catalytic CO₂ reduction,
- Photo-catalysis,
- Charge separation,
- Schottky junction
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Achieving simultaneous Cu particles anchoring in meso-porous TiO2 nanofabrication for enhancing photo-catalytic CO2 reduction through rapid charge separation

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通讯作者: 陈斌, bchen63@163.com

Achieving simultaneous Cu particles anchoring in meso-porous TiO₂ nanofabrication for enhancing photo-catalytic CO₂ reduction through rapid charge separation