Facile synthesis of amorphous MnOx composite for formaldehyde degradation in indoor air-purification

IF 2.8 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Research on Chemical Intermediates Pub Date : 2025-04-03 DOI:10.1007/s11164-025-05557-w

Yong Zhang, Baodan Liu, Qingshan Feng, Yuhua Liu, Sile Ren, Meiting Lv, Jianfeng Chen, Yu Liu, Ji Wang, Liren Wang

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引用次数: 0

Abstract

The amorphous MnO_x composite catalysts were successfully synthesized through a simple redox reaction, and then evaluated the degradation of formaldehyde (HCHO). The in-field plot test demonstrated that the F-1 exhibited a comparable or superior performance with a formaldehyde clean delivery rate (FCADR) of 52.4 m³ h⁻¹ under the mild conditions of 25 ℃, 0.8–1.2 ppm HCHO for 60 min in a 30 m³ stainless steel test chamber, in comparison with the commercial one. The excellent catalytic performance could be attributed to the high surface area beneficial for the exposure of active sites, the abundant oxygen vacancy responsible for rapid oxidation, and the good oxygen mobility and reducibility conducive to rapid electron transfer. Moreover, the excellent catalytic durability with a slight of deactivation even after a prolonged storage or in an extreme high temperature and humidity environment could provide a potential promising pathway for practical application in indoor air purification field.

Graphical abstract

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用于室内空气净化中甲醛降解的无定形MnOx复合材料的简易合成

通过简单氧化还原反应成功合成了无定形MnOx复合催化剂，并对其对甲醛（HCHO）的降解效果进行了评价。现场小区试验表明，F-1在30 m3不锈钢试验箱中，在25℃、0.8-1.2 ppm HCHO作用60 min的温和条件下，甲醛清洁释放率（FCADR）为52.4 m3 h−1，与商业试验箱相比，具有相当或更好的性能。优异的催化性能可归因于高表面积有利于活性位点的暴露，丰富的氧空位有利于快速氧化，良好的氧迁移性和还原性有利于快速电子转移。此外，其优异的催化耐久性，即使在长时间储存或极端高温高湿环境下也有轻微的失活，为室内空气净化领域的实际应用提供了潜在的有前途的途径。图形抽象

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来源期刊

Research on Chemical Intermediates 化学-化学综合

CiteScore

5.70

自引率

18.20%

发文量

229

审稿时长

2.6 months

期刊介绍： Research on Chemical Intermediates publishes current research articles and concise dynamic reviews on the properties, structures and reactivities of intermediate species in all the various domains of chemistry. The journal also contains articles in related disciplines such as spectroscopy, molecular biology and biochemistry, atmospheric and environmental sciences, catalysis, photochemistry and photophysics. In addition, special issues dedicated to specific topics in the field are regularly published.