在单 W 原子催化剂上利用亚硝酸盐和二氧化碳还原进行高效尿素电合成。

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science Pub Date : 2024-11-15 DOI:10.1016/j.jcis.2024.11.075

Di Yuan , Yafu Jiang , Wenyu Du , Dongwei Ma , Ke Chu

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引用次数: 0

摘要

将二氧化碳和二氧化氮电还原为尿素（ECNU）为同时迁移污染的二氧化氮和生产高附加值尿素提供了一种令人着迷的方法。本研究将原子分散在 MoS2（W1/MoS2）上的 W 设计为一种高效的 ECNU 催化剂，在流动池中表现出最高的法拉第效率（60.11%）和尿素产率（35.80 mmol h-1 g-1）。原子表征显示，W 单原子在 MoS2 上以孤立的 W1-S3 分子形式存在。综合理论计算和操作光谱测量结果表明，W1/MoS2 的 ECNU 性能增强源于 W1-S3 分子的构建，它可以促进 CN 偶联和氢化能量，同时抑制竞争性的副反应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Efficient urea electrosynthesis from nitrite and CO2 reduction on single W atom catalyst

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Efficient urea electrosynthesis from nitrite and CO2 reduction on single W atom catalyst

Electroreduction of CO₂ and NO₂⁻ to urea (ECNU) provides a fascinating method for concurrently migrating polluted NO₂⁻ and producing value-added urea. In this study, atomically dispersed W on MoS₂ (W₁/MoS₂) is designed as an efficient ECNU catalyst, which exhibits the highest Faraday efficiency of 60.11 % and urea yield rate of 35.80 mmol h⁻¹ g⁻¹ in flow cell. Atomic characterizations reveal that W single atoms exist as isolated W₁-S₃ moieties on MoS₂. Combined theoretical calculations and operando spectroscopic measurements demonstrate that the enhanced ECNU performance of W₁/MoS₂ arises from the construction of W₁-S₃ moieties that can promote CN coupling and hydrogenation energetics, whilst suppressing the competing side reactions.

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来源期刊

Journal of Colloid and Interface Science 化学-物理化学

CiteScore

16.10

自引率

7.10%

发文量

2568

审稿时长

2 months

期刊介绍： The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies