TY - JOUR
T1 - Construction of Heterostructured Sn/TiO2/Si Photocathode for Efficient Photoelectrochemical CO2 Reduction
AU - Li, Chengjin
AU - Zhou, Xiaoxia
AU - Zhang, Qingming
AU - Xue, Yi
AU - Kuang, Zhaoyu
AU - Zhao, Han
AU - Mou, Chung Yuan
AU - Chen, Hangrong
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (51961165107), the Shanghai International Cooperation Project (19520761000), and the Shanghai Natural Science Foundation (19ZR1464500). CYM was supported by a MOST grant (108‐2218‐E‐002‐039‐MY3).
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/4/22
Y1 - 2022/4/22
N2 - Using renewable energy to convert CO2 into liquid products, as a sustainable way to produce fuels and chemicals, has attracted intense attention. Herein, a novel heterostructured photocathode composed of Si wafer, TiO2 layer, and Sn metal particles has been successfully fabricated by combining of a facile hydrothermal and electrodeposition method. The obtained Sn/TiO2/Si photocathode shows enhanced light absorption performance by the surface plasmon resonance effect of Sn metal. Especially, the Sn/TiO2/Si photocathode together with rich oxygen vacancy defects jointly promote photoelectrochemical CO2 reduction, harvesting a high faradaic efficiency of HCOOH and a desirable average current density (−4.72 mA cm−2) at −1.0 V vs. reversible hydrogen electrode. Significantly, the photocathode Sn/TiO2/Si also shows good stability due to the design of protecting layer TiO2. This study provides a facile strategy of constructing an efficient photocathode to improve the light absorption performance and the electron transfer efficiency, exhibiting great potential in the CO2 reduction.
AB - Using renewable energy to convert CO2 into liquid products, as a sustainable way to produce fuels and chemicals, has attracted intense attention. Herein, a novel heterostructured photocathode composed of Si wafer, TiO2 layer, and Sn metal particles has been successfully fabricated by combining of a facile hydrothermal and electrodeposition method. The obtained Sn/TiO2/Si photocathode shows enhanced light absorption performance by the surface plasmon resonance effect of Sn metal. Especially, the Sn/TiO2/Si photocathode together with rich oxygen vacancy defects jointly promote photoelectrochemical CO2 reduction, harvesting a high faradaic efficiency of HCOOH and a desirable average current density (−4.72 mA cm−2) at −1.0 V vs. reversible hydrogen electrode. Significantly, the photocathode Sn/TiO2/Si also shows good stability due to the design of protecting layer TiO2. This study provides a facile strategy of constructing an efficient photocathode to improve the light absorption performance and the electron transfer efficiency, exhibiting great potential in the CO2 reduction.
KW - CO reduction
KW - formic acid
KW - photocathode
KW - photoelectrochemistry
KW - Sn/TiO/Si
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U2 - 10.1002/cssc.202200188
DO - 10.1002/cssc.202200188
M3 - Article
AN - SCOPUS:85126848237
SN - 1864-5631
VL - 15
JO - ChemSusChem
JF - ChemSusChem
IS - 8
M1 - e202200188
ER -