Sn doping in In2O3-x nanoparticle achieving its synergy with oxygen vacancy towards high-efficiency electrocatalytic CO2 reduction and upcycling of spent liquid crystal display panels

被引：0

作者：

Ren, Zhiyuan ^{[1
,2
,3
]}

Li, Bin ^{[1
,2
]}

Wu, Yufeng ^{[1
,2
]}

Liu, Hui ^{[3
]}

Guo, Feng ^{[3
]}

Tian, Shaonan ^{[3
]}

Yang, Jun ^{[3
,4
]}

机构：

[1] Beijing Univ Technol, Inst Circular Econ, Beijing 100124, Peoples R China

[2] Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China

[3] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

[4] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2025年 / 507卷

基金：

中国国家自然科学基金;

关键词：

Liquid crystal display panels; Oxygen vacancy; Tin doping; Indium; Coordination compounds; Electrochemical CO(2 )reduction reaction; INDIUM; VALORIZATION; CATALYSTS; RECOVERY; FORMATE; WASTE; LCD;

D O I：

10.1016/j.cej.2025.160394

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Converting electronic waste into high-value catalytic materials is an effective strategy for reducing dependence on rare resources and enhancing sustainability. Herein, we synthesize fine-sized Sn-doped In2O3-x particles with oxygen vacancies (Vo) using leachate from spent liquid crystal display panels (LCDPs) for efficient electrochemical CO2 reduction (eCO2RR). Specifically, In3+ and Sn4+ ions from LCDPs leachate are coordinated with dodecylamine's -NH2 and transferred to the organic phase, followed by oleic acid modification to form the compounds (M-DDA-OA). Sn-doped Vo-rich In2O3-x derived from LCDPs (rVo/LCDPs) can be synthesized by converting M-DDA-OA via a wet-chemistry process. Density functional theory (DFT) calculations and experimental results reveal that Sn doping and Vo in In2O3-x synergistically enhance CO2 adsorption and activation, facilitating the formation of *OCHO intermediates and achieving a maximum formate Faradaic efficiency (FEformate) of 94.6 % for rVo/LCDPs at- 1.07 V vs RHE. This study highlights the potential for low-cost, highperformance In-based catalysts from spent LCDPs.

引用

页数：10