High-performance TiO2 photocatalyst produced by the versatile functions of the tiny bimetallic MOF-derived NiCoS-porous carbon cocatalyst. Issue 24 (29th May 2019)

• Record Type: Journal Article
• Authors: Gao, Li-Min; Zhao, Jia-Hui; Li, Tao; Li, Rui; Xie, Hai-Quan; Zhu, Pei-Lin; Niu, Xin-Yue; Li, Kui
• Is Part Of: CrystEngComm. Volume 21:Issue 24(2019)
• Page Start: 3686
• Page End: 3693
• Publication Date: 2019-05-29
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c9ce00529c
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Bimetallic zeolitic imidazolate framework (NiCo-ZIF)-templated NiCoS-porous carbon (PC) at only 0.2 at% exhibited versatile effects on the morphology as well as the photocatalytic hydrogen performance of TiO2 nanocrystals. Abstract : Bimetallic zeolitic imidazolate framework (NiCo-ZIF)-templated NiCoS-porous carbon (PC) at only 0.2 at% exhibited versatile effects on the morphology as well as the photocatalytic hydrogen performance of TiO2 nanocrystals. It not only refined the TiO2 particle size during the post-annealing process at high temperature, but also transformed into a highly conductive NiCoS-PC cocatalyst. The conductive PC improved the transport of the charge carriers, and increased the numbers of exposed active sites by confining the particle size of TiO2 . Furthermore, the well-dispersed NiCoS could be regarded as a hydrogen production cocatalyst on account of its improvement of the electrochemical hydrogen evolution reaction (HER). Consequently, the optimal TiO2 –NiCoS-PC exhibited an extremely high photocatalytic hydrogen production rate of 1.29 mmol h −1 g −1, which is 64.5 and 2.4 times those of pristine TiO2 and commercial P25, respectively. This work provides an effective way of developing high-performance MOF-templated nanoporous photocatalysts.