Amino-Assisted NH2 -UiO-66 Anchored on Porous g-C3 N4 for Enhanced Visible-Light-Driven CO2 Reduction

ACS Applied Materials & Interfaces
Yanan WangQin Zhong

Abstract

Constructing heterostructured photocatalysts is an efficient method to improve photocatalytic carbon dioxide (CO2) reduction. Herein, holey g-C3N4 (HGN) with rich amino groups (-NH x ) was hybridized with NH2-UiO-66 (NUZ) via a facile in situ growth method. NUZ nanocrystals were anchored on HGN via NHx-Zr-O chemical bonding, leading to the uniform dispersion and avoiding the leaching of NUZ, thus showing excellent stability in photocatalysis. The chemically bonded interfacial charge transfer effect originated from the NHx-Zr-O formation efficiently accelerated the separation and migration of charge carriers, improving the photoactivity. Benefiting from the NHx-Zr-O formation, the optimized NUZ/HGN-35% heterojunctions exhibited outstanding activity in the photoreduction of CO2 to CO (31.6 μmol g-1 h-1), which was about 2 and 3 times higher than that of pure NUZ and HGN under visible-light irradiation. This study is expected to provide useful insights for constructing composites with strong interaction for CO2 reduction, H2 production, and N2 reduction.

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Citations

Jun 11, 2020·Chemical Communications : Chem Comm·Xiuyan ChengJing Zhang
Dec 29, 2020·The Science of the Total Environment·Meena NemiwalDinesh Kumar
Jun 19, 2021·ACS Applied Materials & Interfaces·Yongchao WangHongjian Yan
Jun 30, 2021·Journal of Colloid and Interface Science·Jianbo WangQin Zhong
Aug 19, 2020·ACS Applied Materials & Interfaces·Sounak Roy

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