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近红外光热催化用于生物质提升

Xiao Yu¹, Peng Yang², Bin Zhu¹

¹Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo 315201 Zhejiang, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Journal of colloid and interface science

|April 18, 2025

概括

这项研究通过使用阳光激活的催化剂来增强生物质转化. 用氧气空缺的氧化物有效地通过单片氧气生成将5-基甲基 (HMF) 转化为有价值的化学物质.

科学领域:

能量化学能量化学
光热催化剂光热催化剂
绿色化学绿色化学

背景情况:

利用太阳光有效地将生物质转化为增值化学品是一个关键的挑战.
光热催化为太阳能驱动的化学转化提供了一个有前途的途径.
开发用于高效利用太阳能的新型催化剂对于可持续化学至关重要.

研究的目的:

为了提高Mn2O3的催化性能,在近红外 (NIR) 照射下进行生物质转化.
调查由Na+诱导的氧空缺 (OV) 和洞 (hVB+) 促进单点氧生成的机制.
使用太阳能实现选择性氧化5-基甲基 (HMF) 变成5-甲基-2-碳酸 (FFCA).

主要方法:

用Na+对Mn2O3进行兴奋剂,以创建氧空缺 (OV).
利用近红外 (NIR) 太阳能来激活多氧化硫酸盐 (PMS).
使用5-基甲基 (HMF) 作为氧化反应的模型基质.

主要成果:

在NIR照射下,Na+诱导的Mn2O3中的氧空位显著提高了催化性能.
确定了一种单片氧 (1O2) 生成的新机制,涉及OV和hVB+.
在使用太阳能激活的PMS将HMF转换为FFCA时,实现了高选择性.

结论:

与OVs合的Mn2O3是一种有效的光热催化剂,用于生物质转化.
这项研究表明,使用太阳能产生单点氧的新途径.
这项工作促进了可持续绿色化学的发展,以有效地将生物质转化为高价值化学品.

关键词:

5-基甲基黄 (HMF) 是一种在Mn{2) O{3) 中.氧气空缺 (OVs) 是指空缺的氧气.过氧单硫酸盐 (PMS) 是一种光热激活的光热激活

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