Zhu Lihong, Zhang Junying, Chen Ziyu, Liu Kejia, Gao Hong
Department of Physics, Beihang University, Beijing 100191, PR China.
J Nanosci Nanotechnol. 2013 Jul;13(7):5104-8. doi: 10.1166/jnn.2013.7591.
Improving photocatalytic activity and stability of TiO2/Cu2O composite is a challenge in generating hydrogen from water. In this paper, the TiO2 film/Cu2O microgrid composite was prepared via a microsphere lithography technique, which possesses a remarkable performance of producing H2 under UV-vis light irradiation, in comparison with pure TiO2 film, Cu2O film and TiO2 film/Cu2O film. More interesting is that in TiO2 film/Cu2O microgrid, photo-corrosion of Cu2O can be retarded. After deposition of Pt on its surface, the photocatalytic activity of TiO2/Cu2O microgrid in producing H2 is improved greatly.
提高TiO₂/Cu₂O复合材料的光催化活性和稳定性是水制氢领域的一项挑战。本文通过微球光刻技术制备了TiO₂薄膜/Cu₂O微网格复合材料，与纯TiO₂薄膜、Cu₂O薄膜和TiO₂薄膜/Cu₂O薄膜相比，该复合材料在紫外-可见光照射下具有显著的产氢性能。更有趣的是，在TiO₂薄膜/Cu₂O微网格中，Cu₂O的光腐蚀可以得到抑制。在其表面沉积Pt后，TiO₂/Cu₂O微网格产氢的光催化活性得到极大提高。
