Electrocatalysis for urea evolution and oxidation through confining atomic Ni into In2O3 nanosheet catalysts
學年 113
學期 2
出版（發表）日期 2025-02-19
作品名稱 Electrocatalysis for urea evolution and oxidation through confining atomic Ni into In2O3 nanosheet catalysts
作品名稱（其他語言）
著者 Haoyue Sun; Sangseob Lee; Rui Tang; Lizhuo Wang; Cheng-Jie Yang; Weibin Liang; Shenlong Zhao; Chung-Li Dong; Aloysius Soon; Jun Huang
單位
出版者
著錄名稱、卷期、頁數 Advanced Functional Materials 35(8), 2415859
摘要 Urea, a highly sought-after fertilizer, is conventionally manufactured through the energy-intensive Haber–Bosch process but is frequently encountered as a pollutant in wastewater. Thus, achieving sustainable urea production under ambient conditions and the potential to recycle urea from wastewater represent significant eco-economic advancements. In this study, a novel Ni-confined In2O3 (Ni-In2O3) electrocatalyst demonstrating outstanding capabilities in both the urea evolution reaction (UER) from nitrate and carbon dioxide and the highly efficient urea oxidation reaction (UOR) for waste urea utilization is introduced. Computational data and in situ X-ray absorption spectroscopy (XAS) analysis demonstrate that the unique Ni-oxygen vacancy (Ni-Vo) local structure effectively modulates the electronic configuration of neighboring In and Ni atoms. This structural refinement results in a significantly reduced energy barrier for the potential-determining steps (PDS) in both UER (*COOHNH2 → *CONH2) and UOR (*CO(NH2)2 → *CONHNH2). Consequently, the optimized catalysts achieve a urea evolution faradic efficiency of 19.6%, accompanied by remarkable UOR performance, attaining a 100 mA cm−2 anodic current density at a potential of 1.35 V. This work not only offers a sustainable route to urea production but also highlights the potential for efficient urea oxidation, contributing to a greener and more economically viable future for the nitrogen cycle.
關鍵字 catalysis; local structure; nitrogen cycle; urea oxidation; urea synthesis
語言 en
ISSN 1616-301X; 1616-3028
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 DEU
公開徵稿
出版型式 ,電子版,紙本
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129534 )