Efficient hydrogen production by photocatalytic water splitting using N-doped TiO2 film

• DOI: 10.1016/j.apsusc.2013.06.080
• Publication Date: 2013-07-13T21:46:37Z
• Authors: Chong Wang; Qianqian Hu; Jiquan Huang; Lan Wu; Zhonghua Deng; Zhuguang Liu; Yang Liu; Yongge Cao
• Keywords: 01 natural sciences; 7. Clean energy; 0104 chemical sciences

Abstract N-doped TiO 2 film was deposited by RF reactive magnetron sputtering in a mixture gas of N 2 , O 2 and Ar. The experimental results show that the crystal structure is anatase phase, and the concentration of substitutional nitrogen is 4.91 at.% which leads to a narrow optical band gap of 2.65 eV. The H 2 production rate of the N-doped TiO 2 film is about 601 μmol g −1 h −1 , far higher than that of the undoped TiO 2 film and even about 50 times higher than that of dispersive P25 powder.