Hierarchical Titanium Dioxide Nanowire/Metal–Organic Framework/Carbon Nanofiber Membranes for Highly Efficient Photocatalytic Degradation of Hydrogen Sulfide

Guping Zhang, Haibo Sheng, Dongyun Chen^*（陈冬赟）, Najun Li, Qingfeng Xu, Hua Li, Jinghui He,and Jianmei Lu^*（路建美）

College of Chemistry, Chemical Engineering and Materials Science,Collaborative Innovation Center of Suzhou Nano Science and Technology,Soochow University, Suzhou 215123 (P. R. China)

Chem. Eur. J.2018, 24, 15019--15025

Photocatalysis is an efficient approach to degrade hydrogen sulfide (H₂S) and titanium dioxide (TiO₂) is commonly used as a catalyst for H₂S degradation. However, the low separation rate of photoinduced carriers and low gas adsorption ability of TiO₂ limit its H₂S photocatalytic decomposition rate. In this paper, single‐crystalline TiO₂ nanowires are assembled on one‐dimensional carbon nanofibers (CNFs) and a tunable metal–organic framework (MOF) coating is fabricated on the surface of the TiO₂ nanowires using a versatile step‐by‐step self‐assembly strategy. The excellent photocatalytic properties of the resulting membrane originate from the ability of the CNFs to rapidly transport charge carriers and the high and regenerable H₂S adsorption ability of the MOF. The photocatalytic mechanism of the as‐prepared material was also discussed. Therefore, this work provides a promising method to improve the photocatalytic performance of H₂S degradation.

链接：https://onlinelibrary.wiley.com/doi/full/10.1002/chem.201802747