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对空气进行催化臭氧化,以直接生产酸,使用具有可调节微观结构的等级协同3O4O

Pan Liu^1,2, Yongjun Liu¹, Aining Zhang¹

¹School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, P. R. China.

ACS applied materials & interfaces

|January 11, 2024

概括

本研究提出了一种可持续的固方法,使用Co3O4催化剂将大气中的和水转化为酸. 新型的空气催化臭氧化工艺实现了高酸生产率,为工业应用和环境保护提供了高效的途径.

科学领域:

催化剂是一种催化剂.
绿色化学绿色化学
材料科学材料科学材料科学

背景情况:

固对于工业应用至关重要,但传统方法耗费大量能源.
开发可持续和高效的氧化反应 (NOR) 催化剂对于N2固定至关重要.
目前用于酸生产的光催化或电催化N2固定方法存在局限性.

研究的目的:

开发和研究用于空气中N2的直接氧化反应 (NOR) 的Co3O4催化剂.
通过催化臭氧化,探索将N2转化为酸的反应机制.
评估开发的Co3O4催化剂的催化性能和效率.

主要方法:

制备四种类型的可控制微观结构的Co3O4催化剂.
在环境条件下使用Co3O4催化剂对空气中的N2进行催化臭氧化.
实验研究和密度函数理论 (DFT) 计算以阐明反应机制.
15N同位素标记实验以确认产生的酸盐的来源.

主要成果:

多孔纳米板组装的微花结构的Co3O4催化剂表现出了非凡的催化性能.
达到了6.67mmol/h·gcat的最大酸形成率,超过了现有的方法.
DFT计算和同位素标签证实N2是通过直接NOR.的酸盐来源.
氧气空缺和活性基 (•OH,•O2−) 被确定为N2激活和氧化中的关键因素.

结论:

空气催化臭氧化方法为固提供了一个简单而高效的固途径.
Co3O4催化剂显示出可持续酸生产的巨大潜力.
这项研究为环境保护和分布式酸合成提供了一种新的方法.

关键词:

在 Co3O4 的情况下.DFT计算方法的计算方法催化臭氧化催化臭氧化微观结构调节的规则固化的方法固化的方法

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