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在可见光下对NO进行深度光催化氧化,高活性无形配氧化用于深度光催化氧化

Xinjie Song¹, Zewen Li², Yunxia Li²

¹Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, China; Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China.

Journal of colloid and interface science

|July 31, 2025

概括

用添加的氧化物 (N-Nb2O5) 显示了可见光光催化剂的强化,用于深度NO氧化. 性能最好的3-N-Nb2O5材料有效地去除NO,具有高稳定性和抑制副产品.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
催化剂是一种催化剂.

背景情况:

用添加的氧化物 (N-Nb2O5) 正在探索用于光催化应用.
氧化氧化 (NO) 的深度氧化对于空气净化至关重要.

研究的目的:

为了合成无形N-Nb2O5材料.
为了评估它们在可见光下对NO氧化物的光催化性能.
了解兴奋剂和氧气空缺的作用.

主要方法:

在氨气氛下进行高温回火,以合成N-Nb2O5.5.
在可见光下系统评估光催化NO氧化.
在现场进行DRIFTS和EPR分析,以调查反应机制.

主要成果:

兴奋剂缩小了带间隙,增强了可见光吸收,并改善了电荷分离.
兴奋剂诱导氧气空缺,提高表面对NO和O2吸附的反应性.
3-N-Nb2O5显示出最高的NO去除效率和出色的循环稳定性 (在5个循环后80%的转换).
观察到明显抑制的NO2产生.

结论:

无形N-Nb2O5是一种有前途的可见光响应光催化剂,用于空气净化.
兴奋剂和诱导氧气空缺是增强光催化活性的关键.
这项研究提供了一个可行的策略,用于设计高效的光催化剂,用于环境修复.

关键词:

无形结构是无形的结构.添加N-的Nb(2) O(5) 进行化.空缺的氧气位光催化 NO 去除方法可见光可见光是一种可见光.

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相关概念视频

2° Amines to N-Nitrosamines: Reaction with NaNO2

2° Amines to N-Nitrosamines: Reaction with NaNO₂

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.