Recent Advances in g-C3N4-Based Photocatalysts for NOx Removal

Zhanyong Gu; Mengdie Jin; Xin Wang; Ruotong Zhi; Zhenghao Hou; Jing Yang; Hongfang Hao; Shaoyan Zhang; Xionglei Wang; Erpeng Zhou; Shu Yin

doi:10.3390/catal13010192

Catalysts (Jan 2023)

Recent Advances in g-C3N4-Based Photocatalysts for NOx Removal

Zhanyong Gu,
Mengdie Jin,
Xin Wang,
Ruotong Zhi,
Zhenghao Hou,
Jing Yang,
Hongfang Hao,
Shaoyan Zhang,
Xionglei Wang,
Erpeng Zhou,
Shu Yin

Affiliations

Zhanyong Gu: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Mengdie Jin: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Xin Wang: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Ruotong Zhi: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Zhenghao Hou: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Jing Yang: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Hongfang Hao: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Shaoyan Zhang: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Xionglei Wang: School of Material Science and Engineering, Hebei University of Engineering, Handan 056038, China
Erpeng Zhou: Shijiazhuang Key Laboratory of Low-Carbon Energy Materials, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
Shu Yin: Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan

DOI: https://doi.org/10.3390/catal13010192
Journal volume & issue: Vol. 13, no. 1
p. 192

Abstract

Read online

Nitrogen oxides (NOx) pollutants can cause a series of environmental issues, such as acid rain, ground-level ozone pollution, photochemical smog and global warming. Photocatalysis is supposed to be a promising technology to solve NOx pollution. Graphitic carbon nitride (g-C3N4) as a metal-free photocatalyst has attracted much attention since 2009. However, the pristine g-C3N4 suffers from poor response to visible light, rapid charge carrier recombination, small specific surface areas and few active sites, which results in deficient solar light efficiency and unsatisfactory photocatalytic performance. In this review, we summarize and highlight the recent advances in g-C3N4-based photocatalysts for photocatalytic NOx removal. Firstly, we attempt to elucidate the mechanism of the photocatalytic NOx removal process and introduce the metal-free g-C3N4 photocatalyst. Then, different kinds of modification strategies to enhance the photocatalytic NOx removal performance of g-C3N4-based photocatalysts are summarized and discussed in detail. Finally, we propose the significant challenges and future research topics on g-C3N4-based photocatalysts for photocatalytic NOx removal, which should be further investigated and resolved in this interesting research field.

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

About the journal

Abstract

Keywords