摘要
We fabricated indium ion-modified TiO2nanoparticles. The results revealed that indium presents on TiO2surface in the form of fixed ion, by coordinating with hydroxyl groups or terminal oxygen atoms at the surface of TiO2, which resulted in smaller grain size, larger surface area, and mesoporous structure relative to pure titanium dioxide. Compared with pure TiO2, indium ion-modified TiO2showed great enhancement of photocatalytic activity to hydrogen generation. Owing to electronic capture capability of indium, the excited electrons can rapidly transfer from TiO2conduction band to indium, resulting in the separation of electron-hole pairs. The optimal H2 evolution rate was 277.8 mmol·g-1·h-1, which was about 23 times higher than that of Degussa P25.
We fabricated indium ion-modified TiO_2 nanoparticles. The results revealed that indium presents on TiO_2 surface in the form of fixed ion, by coordinating with hydroxyl groups or terminal oxygen atoms at the surface of TiO_2, which resulted in smaller grain size, larger surface area, and mesoporous structure relative to pure titanium dioxide. Compared with pure TiO_2, indium ion-modified TiO_2 showed great enhancement of photocatalytic activity to hydrogen generation. Owing to electronic capture capability of indium, the excited electrons can rapidly transfer from TiO_2 conduction band to indium, resulting in the separation of electron-hole pairs. The optimal H2 evolution rate was 277.8 mmol·g^(-1)·h^(-1), which was about 23 times higher than that of Degussa P25.
基金
Supported by the Natural Science Foundation of Fujian Province(2015j01231)
the Chunmiao Project of Haixi Institute of Chinese Academy of Sciences(CMZX-2014-005)
the National Key Research and Development Program of China(2016YFB0701003)
