A Se-doped MoS2 nanosheet for improved hydrogen evolution reaction†
Abstract
Thanks to the increase in the number of active sites and enhanced conductivity, the Se-doped MoS2 shows excellent catalytic activity with a lower overpotential of −140 mV and a smaller Tafel slope of 55 mV dec−1, exhibiting enhanced catalytic performance compared with that of pristine MoS2. This work offers an attractive strategy to improve the HER activity of MoS2-based catalysts.