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Hot electrons coupling-enhanced photocatalysis of super black carbon aerogels/titanium oxide composite

Published online by Cambridge University Press:  23 April 2018

Hongqiang Wang Open the ORCID record for Hongqiang Wang [Opens in a new window] ,
Xinru He ,
Bin Zhou ,
Jun Shen  and
Ai Du
Hongqiang Wang
Affiliation:
Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Tongji University, Shanghai 200092, People's Republic of China School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
Xinru He
Affiliation:
School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
Bin Zhou
Affiliation:
Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Tongji University, Shanghai 200092, People's Republic of China School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
Jun Shen
Affiliation:
Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Tongji University, Shanghai 200092, People's Republic of China School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
Ai Du*
Affiliation:
Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Tongji University, Shanghai 200092, People's Republic of China School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
*
Address all correspondence to Ai Du at [email protected]
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Abstract

To evaluate whether the photocatalysis efficiency of titanium oxide (TiO2) increases under the shading of carbon aerogel (CA), super black CA/TiO2 composite sheets were directly fabricated by physical mixing of CA, TiO2 powder, and binder. It was found that the photocatalysis efficiency of composite sheets were higher than that of pure TiO2 sheet. We attribute this phenomenon to the hot electrons coupling between CA and TiO2. Besides the direct light absorption of TiO2, the hot electrons generating and indirect energy transfer from CA to TiO2 may enhance the photocatalysis efficiency of TiO2.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 2 , June 2018 , pp. 521 - 526
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Copyright
Copyright © Materials Research Society 2018 

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Footnotes

*

These authors contributed equally to this work and should be considered co-first authors.

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