Remarkable MnO2 structure-dependent H2O promoting effect in HCHO oxidation at room temperature
文献类型：期刊论文
| 作者 | Ma, Chunyan ; Sun, Shumei; Lu, Hao; Hao, Zhengping; Yang, Chenggong; Wang, Bin; Chen, Cheng; Song, Maoyong
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| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-07-15 |
| 卷号 | 414页码:- |
| 关键词 | HCHO oxidation MnO2 structure Structure-dependent H2O effect Room temperature |
| ISSN号 | 0304-3894 |
| 英文摘要 | H2O is often critical in determining the activity and stability of metal oxide catalysts for HCHO oxidation; however, synthesis of metal oxide catalysts with super resistance to H2O remains a challenging. Herein, we synthesized Akhtenskite-type MnO2 catalyst with Mn-O-Mn stretching along MnO6 octahedra layers, which promotes the utilization of the associatively adsorbed H2O. The activity and stability of formaldehyde oxidation at room temperature enhanced in humid air. Diffuse-reflectance infrared Fourier transform (DRIRFT) spectroscopy was used to characterize the H2O adsorption and intermediate species. The associatively adsorbed H2O promotes the oxidation of formaldehyde to CO2 via the formic acid intermediate. The service life of MnO2 is prolonged due to formic acid generation. MnO2 gradually deactivates when formic acid accumulates and forms formate and hydrogen carbonate species. This study provides significant insights into the development of a high-efficiency MnO2 catalyst for formaldehyde oxidation in humid air, and the developed MnO2 catalyst is a promising candidate for application in practical formaldehyde elimination. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45896]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Beijing Normal Univ, Dept Phys & Appl Opt, Beijing Area Major Lab, Beijing 100875, Peoples R China 3.Max Planck Inst Polymer Res, Ackermannweg 10, D-55128 Mainz, Germany 4.Sinopec Grp, Beijing Res Inst Chem Ind, Beijing 100013, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effects, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Chunyan,Sun, Shumei,Lu, Hao,et al. Remarkable MnO2 structure-dependent H2O promoting effect in HCHO oxidation at room temperature[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,414:-. |
| APA | Ma, Chunyan.,Sun, Shumei.,Lu, Hao.,Hao, Zhengping.,Yang, Chenggong.,...&Song, Maoyong.(2021).Remarkable MnO2 structure-dependent H2O promoting effect in HCHO oxidation at room temperature.JOURNAL OF HAZARDOUS MATERIALS,414,-. |
| MLA | Ma, Chunyan,et al."Remarkable MnO2 structure-dependent H2O promoting effect in HCHO oxidation at room temperature".JOURNAL OF HAZARDOUS MATERIALS 414(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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