1 School of Environmental Science and Engineering, State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. fmjin@sjtu.edu.cn.
2 School of Environmental Science and Engineering, State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. fmjin@sjtu.edu.cn and Graduate School of Environmental Studies, Tohoku University, Aoba-ku, Sendai 980-8579, Japan.
3 Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. yqwang1984@gmail.com.
4 Graduate School of Environmental Studies, Tohoku University, Aoba-ku, Sendai 980-8579, Japan.
We report a highly efficient water splitting for CO2 reduction into formic acid with a commercially available metal of Fe powder without adding any other catalyst. An excellent formic acid yield of more than 90% was attained.