在气固界面使用 Ag/TNTAs 在电辅助下光催化还原环境空气中的二氧化碳

Feng Yue , Zhaoya Fan , Cong Li , Yang Meng , Shuo Zhang , Mengke Shi , Minghua Wang , Mario Berrettoni , Jun Li , Hongzhong Zhang
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引用次数: 0

摘要

通过光催化将大气中的二氧化碳直接转化为燃料在促进碳循环方面具有重要的实际应用价值。本研究建立了一种具有双隔室和界面的电助光催化系统,并通过多巴胺改性在钛纳米管阵列(TNTAs)上包覆了银纳米颗粒。在没有牺牲剂和碱吸收液的条件下,通过光电协同作用,实现了在环境空气中气固界面上将 CO2 稳定、高效、高选择性地转化为 CO。具体而言,在电位的辅助下,紫外线和可见光照射下的 CO 生成率分别达到 194.9 μmol h-1 m-2 和 103.9 μmol h-1 m-2;相应的环境空气中 CO2 转化率分别为 30% 和 16%。优异的催化效果主要归功于催化过程中形成的 P-N 异质结和表面等离子体共振效应。此外,固体琼脂电解质的引入有效抑制了氢进化反应,提高了电子利用率。该系统促进了光催化技术在实际应用中的发展,并为碳循环提供了新的见解和支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Electro-assisted photocatalytic reduction of CO2 in ambient air using Ag/TNTAs at the gas-solid interface

The direct conversion of atmospheric CO2 into fuel via photocatalysis exhibits significant practical application value in advancing the carbon cycle. In this study, we established an electro-assisted photocatalytic system with dual compartments and interfaces, and coated Ag nanoparticles on the titanium nanotube arrays (TNTAs) by polydopamine modification. In the absence of sacrificial agent and alkali absorption liquid conditions, the stable, efficient and highly selective conversion of CO2 to CO at the gas-solid interface in ambient air was realized by photoelectric synergy. Specifically, with the assistance of potential, the CO formation rates reached 194.9 μmol h−1 m−2 and 103.9 μmol h−1 m−2 under ultraviolet and visible light irradiation, respectively; the corresponding CO2 conversion rates in ambient air were 30% and 16%, respectively. The excellent catalytic effect is mainly attributed to the formation of P–N heterojunction during the catalytic process and the surface plasmon resonance effect. Additionally, the introduction of solid agar electrolytes effectively inhibits the hydrogen evolution reaction and improves the electron utilization rate. This system promotes the development of photocatalytic technology for practical applications and provides new insights and support for the carbon cycle.

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来源期刊
材料导报:能源(英文)
材料导报:能源(英文) Renewable Energy, Sustainability and the Environment, Nanotechnology
CiteScore
13.00
自引率
0.00%
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0
审稿时长
50 days
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