| 内容提要: |
we designed and synthesized a millimetre-sized chitosan-CdS xerogel bead photocatalyst (CXB@CdS) to expound the mechanisms of photocorrosion resistant and enhanced photocatalytic H2 production. -NH2 and -OH groups of chitosan contribute to the spatial separation of photogenerated electron-hole pairs lead to inhibition of CXB@CdS photocorrosion, which guaranteed stable HER performance for 55 h. Directional migration of photogenerated holes from valence band (VB) of CXB@CdS to the highest occupied molecular orbital (HOMO) of chitosan was demonstrated due to the existence of lone pair electrons on -NH2 and -OH groups. |