TY  - JOUR
AU  - Du, Yanqiu
AU  - Jiang, Cheng
AU  - Song, Li
AU  - Gao, Bin
AU  - Gong, Hao
AU  - Xia, Wei
AU  - Sheng, Lei
AU  - Wang, Tao
AU  - He, Jianping
PY  - 2020
TI  - Regulating surface state of WO3 nanosheets by gamma irradiation for suppressing hydrogen evolution reaction in electrochemical N2 fixation
JO  - Nano Research
SN  - 1998-0124
SP  - 2784
EP  - 2790
VL  - 13
IS  - 10
AB  - Realizing the reduction of N2 to NH3 at low temperature and pressure is always the unremitting pursuit of scientists and then electrochemical nitrogen reduction reaction offers an intriguing alternative. Here, we develop a feasible way, gamma irradiation, for constructing defective structure on the surface of WO3 nanosheets, which is clearly observed at the atomic scale by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). The abundant oxygen vacancies ensure WO3 nanosheets with a Faradaic efficiency of 23% at -0.3 V vs. RHE. Moreover, we start from the regulation of the surface state to suppress proton availability towards hydrogen evolution reaction (HER) on the active site and thus boost the selectivity of nitrogen reduction.
UR  - https://doi.org/10.1007/s12274-020-2929-z
DO  - 10.1007/s12274-020-2929-z