Ni(OH)(2) loaded on TaON for enhancing photocatalytic water splitting activity under visible light irradiation

作者：Chen, Wei; Chu, Mingchao; Gao, Li; Mao, Liqun; Yuan, Jian; Shangguan, Wenfeng^*

来源：Applied Surface Science, 2015, 324: 432-437.

DOI：10.1016/j.apsusc.2014.10.114

• Hydrogen production
• Photocatalysis
• Ni(OH)(2) cocatalyst
• TaON

The noble-metal-free Ni(OH)(2) as a cocatalyst was loaded on TaON photocatalyst by a precipitation method. The characterization of XRD, SEM, HRTEM and XPS revealed that Ni species was loaded on TaON in the form of beta-Ni(OH)(2). The composite Ni(OH)(2)/TaON showed higher photocatalytic activity for hydrogen evolution (3.15 mu mol/h) than that of naked TaON and even higher than 0.5 wt% Pt/TaON (1.48 mu mol/h) under visible light (lambda > 400 nm) in the presence of methanol as a sacrificial reagent, while the weight ratio of TaON: Ni(OH)(2) reached 5. The enhancement of photocatalytic activity of Ni(OH)(2)/TaON is attributed to the rapid electrons migration from CB of TaON to Ni(OH)(2), which restrains the recombination of charge carriers generated by TaON and facilitates the hydrogen evolution.

• 出版日期2015-1-1
• 单位上海交通大学; 河南大学; 中国科学技术信息研究所