自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 6    June 2019

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Hierarchical TiO2 nanorods with a highly active surface for photocatalytic CO2 reduction
CAO Mao-qi(曹茂启)1, 2, LIU Kang(刘康)1, ZHOU Hui-min(周惠敏)1, LI Hong-mei(李红梅)1,GAO Xiao-hui(高小惠)1, QIU Xiao-qing(邱晓清)3, 4, LIU Min(刘敏)1, 5

1. Institute of Super-Microstructure and Ultrafast Process in Advanced Materials,
School of Physics and Electronics, Central South University, Changsha 410083, China;
2. School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities,Duyun 558000, China;
3. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
4. School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China;
5. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

Abstract:Photocatalytic carbon dioxide reduction reaction (CO2RR) has been considered as one of most effective ways to solve the current energy crisis and environmental problems. However, the practical application of photocatalytic CO2RR is largely hindered by lock of efficient catalyst. Here, hierarchical titanium dioxide (TiO2) nanostructures with a highly active {001} surface were successfully synthesized by a facile approach from metal Ti powders. The obtained hierarchical TiO2 nanostructures were composed of TiO2 nanorods, which have a diameter about 5–10 nm and a length of several micrometers. It is found that these nanorods have exposed {001} facets. On the other hand, these hierarchical TiO2 nanostructures have a good light-harvesting efficiency with the help of TiO2 nanorods component and large specific surface area. Therefore, these hierarchical TiO2 nanostructures exhibit a much better activity for photocatalytic CO2 reduction than that of commercial TiO2 (P25). This high activity can be attributed to the synergistic effects of active surface, efficient charge transfer along nanorods and good light harvesting in the nanorod-hierarchical nanostructures.

 

Key words: TiO2; {001} facets; hierarchical nanorods; CO2 photoreduction

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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