Insight into the design of a Ti3C2 MXene/Ti4O7 composite ceramic membrane boosts the electrocatalytic activity for 1,4-dioxane electro-oxidation

被引：20

作者：

He, Kuanchang ^{[1
]}

Li, Wei ^{[1
]}

Tang, Longxiang ^{[1
]}

Chen, Lingyu ^{[1
]}

Wang, Gang ^{[2
]}

Liu, Qian ^{[1
]}

Xin, Xiaodong ^{[1
]}

Yang, Cao ^{[1
]}

Wang, Zhenbei ^{[3
]}

Lv, Sihao ^{[1
]}

Xing, Defeng ^{[4
]}

机构：

[1] Dongguan Univ Technol, Res Ctr Ecoenvironm Engn, Dongguan 523808, Peoples R China

[2] Dongguan Univ Technol, Sch Environm & Civil Engn, Dongguan 523808, Peoples R China

[3] Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing Key Lab Source Control Technol Water Pollu, Beijing 100083, Peoples R China

[4] Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2023年 / 338卷

基金：

中国国家自然科学基金;

关键词：

Electrochemical advanced oxidation process; Hydroxyl radical; Refractory organic compounds; STOICHIOMETRIC TITANIUM-OXIDE; ADVANCED OXIDATION PROCESSES; POTABLE WATER; MINERALIZATION; MXENE; DEGRADATION; POLLUTANTS; ELECTRODE; KINETICS; IMPACT;

D O I：

10.1016/j.apcatb.2023.123077

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：

Efficient refractory organic compound (ROC) removal through Ti4O7 ceramic membrane in electrochemical advanced oxidation processes (EAOPs) requires high electrochemical reactivity and stability. Herein, we report on the synthesis and properties of Ti3C2 MXene-doped Ti4O7 ceramic membranes (Ti3C2@Ti4O7) using a spark plasma sintering system, after employing density functional theory calculations to design the electrocatalyst. Doping with Ti3C2 MXene resulted in interfacial Ti-O-Ti chemical bond formation, which greatly improved the electronic structure and the generation of hydroxyl radicals (& BULL;OH). Compared with pristine Ti4O7, the charge-transfer resistance of Ti3C2@Ti4O7 decreased from 59.09 to 4.21 & omega;, and the & BULL;OH generation rate enhanced 2.3  2.6-fold. Ti3C2@Ti4O7 could effectively remove 1,4-Dioxane from natural groundwater, and the residual 1,4-Dioxane concentration met the requirements for drinking water. Our study provides a proof-of-concept demonstration using Ti3C2 MXene to manufacture a doped Ti4O7 ceramic membrane for effective ROC removal. The theoretical predictions from this study can inspire novel electrocatalyst designs for EAOPs.

引用

页数：13

共 32 条

[31] Interface effect of C3N4-Ti4O7-MoS2 composite toward enhanced electrocatalytic hydrogen evolution reaction; [C3N4-Ti4O7-MoS2复合催化剂界面效应增强电催化析氢性能]
Du J.-F.
Zhao J.-H.
Ren J.
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 2021, 49 (07): : 986 - 997
[32] Design of 3D/1D/2D ZnIn2S4/Zn0.2Cd0.8S/Ti3C2 MXene interfacial heterojunction for enhanced photocatalytic hydrogen evolution
Bao, Jiao
Zhang, Xin
Xiao, Wenting
Yuan, Haohuan
Huang, Bo
He, Guannan
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