Rational construction of Ni(OH)2 nanoparticles on covalent triazine-based framework for artificial CO2 reduction

Tiansu Zhao; Qing Niu; Guocheng Huang; Qiaoshan Chen; Yanxin Gao; Jinhong Bi; Ling Wu

doi:10.1016/j.jcis.2021.05.131

Rational construction of Ni(OH)₂ nanoparticles on covalent triazine-based framework for artificial CO₂ reduction

J Colloid Interface Sci. 2021 Nov 15:602:23-31. doi: 10.1016/j.jcis.2021.05.131. Epub 2021 May 25.

Authors

Tiansu Zhao¹, Qing Niu¹, Guocheng Huang², Qiaoshan Chen¹, Yanxin Gao¹, Jinhong Bi³, Ling Wu⁴

Affiliations

¹ Department of Environmental Science and Engineering, Fuzhou University, 2 Xue Yuan Road, New Campus, Minhou, Fujian 350108, PR China.
² Department of Environmental Science and Engineering, Fuzhou University, 2 Xue Yuan Road, New Campus, Minhou, Fujian 350108, PR China. Electronic address: sysuhgc@gmail.com.
³ Department of Environmental Science and Engineering, Fuzhou University, 2 Xue Yuan Road, New Campus, Minhou, Fujian 350108, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 2 Xue Yuan Road, New Campus, Minhou, Fujian 350108, PR China. Electronic address: bijinhong@fzu.edu.cn.
⁴ State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 2 Xue Yuan Road, New Campus, Minhou, Fujian 350108, PR China.

PMID: 34118602
DOI: 10.1016/j.jcis.2021.05.131

Abstract

Artificial photoreduction of CO₂ to chemical fuel is an intriguing and reliable strategy to tackle the issues of energy crisis and climate change simultaneously. In the present study, we rationally constructed a Ni(OH)₂-modified covalent triazine-based framework (CTF-1) composites to serve as cocatalyst ensemble for superior photoreduction of CO₂. In particular, the optimal Ni(OH)₂-CTF-1 composites (loading ratio at 0.5 wt%) exhibited superior photocatalytic activity, which surpassed the bare CTF-1 by 33 times when irradiated by visible light. The mechanism for the enhancement was systematically investigated based on various instrumental analyses. The origin of the superior activity was attributable to the enhanced CO₂ capture, more robust visible-light response, and improved charge carrier separation/transfer. This study offers an innovative pathway for the fabrication of noble-metal-free cocatalysts on CTF semiconductors and deepens the understanding of photocatalytic CO₂ reduction.

Keywords: Cocatalyst; Covalent organic framework; Covalent triazine-based framework; Ni(OH)(2); Photocatalytic CO(2) reduction.