The regulating effect of boron doping and its concentration on the photocatalytic overall water splitting of a polarized g-C<sub>3</sub>N<sub>5</sub> material
Xianghong Niu, Xuemei Zhang, Xuemei Zhang, Anqi Shi, Dazhong Sun, Dingbang Chen, Lu Zhang, Jialin Huang, Liqing Liu, Bing Wang, Xiuyun Zhang, Xiuyun Zhang
Abstract
, the overpotential for the complicated four-electron process of the oxygen reduction reaction is only 0.50 V. Simultaneously, the B doping-induced impurity state effectively reduces the band gap and broadens the photo-absorption range. Moreover, with the increase of B doping concentration, the photo-absorption range and catalytic activity can be gradually improved. Whereas when the concentration exceeds 33.3%, the reduction potential of the conduction band edge will not meet the demand for hydrogen evolution. Therefore, excessive doping is not recommended in experiments. Our work affords not only a promising photocatalyst but also a practical design scheme by combining polarizing materials and the doping strategy for overall water splitting.