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Preparation and Photocatalytic Performance of TiO2-CNTs Composite Photocatalyst
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Hanwen ZHANG1, Xiaoming XI1, Xiaojun ZHUO1, Yujun SHEN1, Xiaozhou ZHOU2, Jun PENG1
Mining and Metallurgical Engineering | 2024, 44(6) : 151 - 155
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Mining and Metallurgical Engineering | 2024, 44(6): 151-155
• MATERIALS •
Preparation and Photocatalytic Performance of TiO2-CNTs Composite Photocatalyst
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Hanwen ZHANG1, Xiaoming XI1, Xiaojun ZHUO1, Yujun SHEN1, Xiaozhou ZHOU2, Jun PENG1
Affiliations
  • 1.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
  • 2.School of Metallurgy and Environmental Engineering, Central South University, Changsha 410083, Hunan, China
Published: 2024-12-01 doi: 10.3969/j.issn.0253-6099.2024.06.032
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A composite photocatalyst of TiO2-CNTs was synthesized by adopting the sol-gel method and ultrasonic dispersion, and then its activity in the photocatalytic reduction of CO2 was tested. With a load capacity of carbon nanotubes (CNTs) at 0.75%, the TiO2-CNTs present a better performance in photocatalytic CO2 reduction. Under UV irradiation with wavelength of 365 nm, the average yield of CH4 and CO from the composite catalyst are enhanced by 90% and 156% respectively, compared to the usage of single TiO2 catalyst. It is believed that the reaction is based on the following mechanisms: CNTs, as a co-catalyst, forms a compact electron transport structure with semiconductor of TiO2, which significantly accelerates the transfer of photogenic carriers and reduces the electron-cave recombination efficiency. In addition, high specific surface area and excellent adsorption performance of CNTs can increase active sites for reaction, thus improving efficiency of photocatalytic reduction of CO2 by the catalyst.

photocatalyst  /  CO2  /  carbon nanotube  /  TiO2  /  sol-gel method  /  UV light  /  catalytic reduction  /  active site  /  photogenic carrier
Hanwen ZHANG, Xiaoming XI, Xiaojun ZHUO, Yujun SHEN, Xiaozhou ZHOU, Jun PENG. Preparation and Photocatalytic Performance of TiO2-CNTs Composite Photocatalyst[J]. Mining and Metallurgical Engineering, 2024 , 44 (6) : 151 -155 . DOI: 10.3969/j.issn.0253-6099.2024.06.032
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doi: 10.3969/j.issn.0253-6099.2024.06.032
  • Receive Date：2024-06-01
  • Online Date：2026-03-19
  • Published：2024-12-01
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  • Received：2024-06-01
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    1.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
    2.School of Metallurgy and Environmental Engineering, Central South University, Changsha 410083, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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