Article Title

A novel Sn₂Sb₂O₇ nanophotocatalyst for visible-light-driven H₂ evolution

Authors

Jinwen Shi, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China
Lijing Ma, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China
Po Wu, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China
Zhaohui Zhou, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China
Penghui Guo, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China
Shaohua Shen, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China
Dengwei Jing, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China
Liejin Guo, 28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering (MFPE), Xian Jiaotong University (XJTU), Xian 710049, China

Keywords

Bandgap engineering, energy conversion, ion exchange, nanostructures, photochemistry, tin(Ⅱ)

Abstract

ABSTRACT A novel pure cubic-phase pyrochlore structure tin(Ⅱ) antimonate nanophotocatalyst, stoichiometric Sn2Sb2O7, has been prepared by a modified ion-exchange process using an antimonic acid precursor, and employed in visible-light-driven photocatalytic H2 evolution for the first time. The physicochemical properties (crystal phase, chemical composition and state, textural properties, and optical properties) of the material were investigated by different instrumental techniques. Compared with the antimonic acid precursor, the as-prepared Sn2Sb2O7 had a narrower bandgap, smaller crystal size, and larger BET surface area. The as-prepared Sn2Sb2O7 was validated as a promising candidate for visible-light-driven photocatalytic H2 evolution with a constant rate of 40.10 μmol∙h–1∙gcat–1.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-012-0243-0

Publisher

Tsinghua University Press

Recommended Citation

Jinwen Shi,Lijing Ma,Po Wu,Zhaohui Zhou,Penghui Guo,Shaohua Shen,Dengwei Jing,Liejin Guo, A novel Sn2Sb2O7 nanophotocatalyst for visible-light-driven H2 evolution. NanoRes.2012, 5(8): 576–583