High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO2 nanosheets and γ-MnOOH nanowires

doi:10.1007/s40436-020-00321-2

Advances in Manufacturing ›› 2020, Vol. 8 ›› Issue (4): 429-439.doi: 10.1007/s40436-020-00321-2

• ARTICLES •

High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO₂ nanosheets and γ-MnOOH nanowires

Ying Tao^1,2, Rong Li^1,3, Ai-Bin Huang¹, Yi-Ning Ma⁴, Shi-Dong Ji², Ping Jin¹, Hong-Jie Luo²

1 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China;
2 Institute for the Conservation of Culture Heritage, Shanghai University, Shanghai 200444, People's Republic of China;
3 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
4 Department of Criminal Science and Technology, Jiangsu Police Institute, Nanjing 210031, People's Republic of China

收稿日期:2020-04-21 修回日期:2020-07-03 发布日期:2020-12-07
通讯作者: Rong Li, Shi-Dong Ji E-mail:lirong@mail.sic.ac.cn;sdki@mail.sic.ac.cn
基金资助:
This work was financially supported by the National Natural Science Foundation of China (Grant No. 51572284), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20190809), and the Scientific Research Foundation of the Jiangsu Police Institute (Grant No. JSPI19GKZL401).

High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO₂ nanosheets and γ-MnOOH nanowires

Ying Tao^1,2, Rong Li^1,3, Ai-Bin Huang¹, Yi-Ning Ma⁴, Shi-Dong Ji², Ping Jin¹, Hong-Jie Luo²

1 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China;
2 Institute for the Conservation of Culture Heritage, Shanghai University, Shanghai 200444, People's Republic of China;
3 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
4 Department of Criminal Science and Technology, Jiangsu Police Institute, Nanjing 210031, People's Republic of China

Received:2020-04-21 Revised:2020-07-03 Published:2020-12-07
Contact: Rong Li, Shi-Dong Ji E-mail:lirong@mail.sic.ac.cn;sdki@mail.sic.ac.cn
Supported by:
This work was financially supported by the National Natural Science Foundation of China (Grant No. 51572284), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20190809), and the Scientific Research Foundation of the Jiangsu Police Institute (Grant No. JSPI19GKZL401).

摘要/Abstract

摘要： Among the transition metal oxide catalysts, manganese oxides have great potential for formaldehyde (HCHO) oxidation at ambient temperature because of their high activity, nontoxicity, low cost, and polybasic morphologies. In this work, a MnO₂-based catalyst (M-MnO₂) with an interconnected network structure was successfully synthesized by a one-step hydrothermal method. The M-MnO₂ catalyst was composed of the main catalytic agent, δ-MnO₂ nanosheets, dispersed in a nonactive framework material of γ-MnOOH nanowires. The catalytic activity of M-MnO₂ for HCHO oxidation at room temperature was much higher than that of the pure δ-MnO₂ nanosheets. This is attributed to the special interconnected network structure. The special interconnected network structure has high dispersion and specific surface area, which can provide more surface active oxygen species and higher surface hydroxyl groups to realize rapid decomposition of HCHO.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-020-00321-2

关键词: MnO₂, Formaldehyde, Catalytic oxidation, Hydrothermal synthesis

Abstract: Among the transition metal oxide catalysts, manganese oxides have great potential for formaldehyde (HCHO) oxidation at ambient temperature because of their high activity, nontoxicity, low cost, and polybasic morphologies. In this work, a MnO₂-based catalyst (M-MnO₂) with an interconnected network structure was successfully synthesized by a one-step hydrothermal method. The M-MnO₂ catalyst was composed of the main catalytic agent, δ-MnO₂ nanosheets, dispersed in a nonactive framework material of γ-MnOOH nanowires. The catalytic activity of M-MnO₂ for HCHO oxidation at room temperature was much higher than that of the pure δ-MnO₂ nanosheets. This is attributed to the special interconnected network structure. The special interconnected network structure has high dispersion and specific surface area, which can provide more surface active oxygen species and higher surface hydroxyl groups to realize rapid decomposition of HCHO.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-020-00321-2

Key words: MnO₂, Formaldehyde, Catalytic oxidation, Hydrothermal synthesis

Ying Tao, Rong Li, Ai-Bin Huang, Yi-Ning Ma, Shi-Dong Ji, Ping Jin, Hong-Jie Luo. High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO₂ nanosheets and γ-MnOOH nanowires[J]. Advances in Manufacturing, 2020, 8(4): 429-439.

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High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO₂ nanosheets and γ-MnOOH nanowires

High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO₂ nanosheets and γ-MnOOH nanowires

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