Porous graphitic carbon nitride nanosheets for photocatalytic degradation of formaldehyde gas

被引：32

作者：

Kong, Lingru ^{[1
]}

Li, Xiaoxue ^{[1
]}

Song, Peng ^{[1
]}

Ma, Fengcai ^{[1
]}

机构：

[1] Liaoning Univ, Dept Phys, Shenyang 110036, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2021年 / 762卷

基金：

中国国家自然科学基金;

关键词：

Graphitic carbon nitrides; Volatile organic compounds; Photocatalysis; Photocatalysis degradation formaldehyde; EFFICIENT PHOTOCATALYSTS; CATALYTIC-OXIDATION; G-C3N4; NANOSHEETS; TIO2; VOCS; PHOTOACTIVITY; PERFORMANCE; FABRICATION; COMPOSITES; EVOLUTION;

D O I：

10.1016/j.cplett.2020.138132

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, the porous g-C3N4 nanosheet with enhanced photocatalytic performance can be easily obtained using a "two step" strategy by treating melamine with organic acids and aldehydes. The photocatalytic performance of the samples was evaluated by the formation of carbon dioxide from formaldehyde under LED lamp irradiation. The photocatalytic activity of porous g-C3N4 nanosheet was improved significantly which the possible mechanism is that formaldehyde molecules are more easily adsorbed around the hole. This behavior reduces the carrier diffusion distance and increases the probability of photocatalytic reaction. The photocatalytic activity provides many reactive sites for formaldehyde.

引用

页数：7

共 39 条

[1] Photocatalytic destruction of VOCs in the gas-phase using titanium dioxide [J].

Alberici, RM ;

Jardim, WE .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1997, 14 (1-2) :55-68

[2] Catalytic oxidation of volatile organic compounds (VOCs) mixture (isopropanol/o-xylene) on zeolite catalysts [J].

Beauchet, R. ;

Magnoux, P. ;

Mijoin, J. .

CATALYSIS TODAY, 2007, 124 (3-4) :118-123

[3] Porous structure dependent photoreactivity of graphitic carbon nitride under visible light [J].

Dong, Guohui ;

Zhang, Lizhi .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (03) :1160-1166

[4] Establishing WO3/g-C3N4 Composite for "Memory" Photocatalytic Activity and Enhancement in Photocatalytic Degradation [J].

Du, Juan ;

Wang, Zheng ;

Li, YeHua ;

Li, RunQing ;

Li, XiaoYu ;

Wang, KeYong .

CATALYSIS LETTERS, 2019, 149 (05) :1167-1173

[5] A novel Z-scheme g- C3N4/LaCoO3 heterojunction with enhanced photocatalytic activity in degradation of tetracycline hydrochloride [J].

Guo, Jifeng ;

Li, Pengtao ;

Yang, Zhao .

CATALYSIS COMMUNICATIONS, 2019, 122 :63-67

[6] High-yield and low-cost method to synthesize large-area porous g-C3N4 nanosheets with improved photocatalytic activity for gaseous nitric oxide and 2-propanol photodegradation [J].

Han, Dongyuan ;

Liu, Jing ;

Cai, He ;

Zhou, Xue ;

Kong, Lingru ;

Wang, Jiwei ;

Shi, Haifeng ;

Guo, Qiang ;

Fan, Xiaoxing .

APPLIED SURFACE SCIENCE, 2019, 464 :577-585

[7] In situ hydrothermal synthesis of g-C3N4/TiO2 heterojunction photocatalysts with high specific surface area for Rhodamine B degradation [J].

Hao, Ruirui ;

Wang, Guohong ;

Jiang, Chuanjia ;

Tang, Hua ;

Xu, Qingchuan .

APPLIED SURFACE SCIENCE, 2017, 411 :400-410

[8] Graphene-based composites [J].

Huang, Xiao ;

Qi, Xiaoying ;

Boey, Freddy ;

Zhang, Hua .

CHEMICAL SOCIETY REVIEWS, 2012, 41 (02) :666-686

[9] Preparation of graphitic carbon nitride (g-C3N4)/WO3 composites and enhanced visible-light-driven photodegradation of acetaldehyde gas [J].

Katsumata, Ken-ichi ;

Motoyoshi, Ryosuke ;

Matsushita, Nobuhiro ;

Okada, Kiyoshi .

JOURNAL OF HAZARDOUS MATERIALS, 2013, 260 :475-482

[10] Porous size dependent g-C3N4 for efficient photocatalysts: Regulation synthesizes and physical mechanism [J].

Kong, Lingru ;

Wang, Jingang ;

Mu, Xijiao ;

Li, Rui ;

Li, Xiaoxue ;

Fan, Xiaoxing ;

Song, Peng ;

Ma, Fengcai ;

Sun, Mengtao .

MATERIALS TODAY ENERGY, 2019, 13 :11-21

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