Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Liu, Jiangping1,3; Su, Hong; Hu, Yanan1,2,3; Gong, Chenhao1,3; Lu, Jichang1,3; He, Dedong2,3; Zhu, Wenjie1,3; Chen, Dingkai2,3; Cao, Xiaohua2; Li, Jun4 ; Gligorovski, Sasho5; Luo, Yongming1,2,3
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| Highly efficient degradation of sulfur-containing volatile organic compounds by amorphous MnO2 at room temperature: Implications for controlling odor pollutants | |
| Source Publication | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| ISSN | 0926-3373 |
| 2023-10-05 | |
| Volume | 334Pages:13 |
| DOI | 10.1016/j.apcatb.2023.122877 |
| Language | 英语 |
| WOS Research Area | Chemistry ; Engineering |
| Abstract | Sulfur-Containing Volatile Organic Compounds (S-VOCs) are notorious for global air pollution due to their odorous characteristics and exhibiting adverse health effects. Nevertheless, the catalytic degradation of S-VOCs at low temperatures is still a tremendous challenge for air purification. In this study, methyl mercaptan (CH3SH), a typical S-VOCs contaminant, could be completely removed by amorphous MnO2 with high efficiency (100 %) for 40 h at room temperature, and demonstrating significantly enhanced stability (over 100 h) in the presence of 20 %RH (Relative humidity), which is far superior to the performance of previous reported catalysts. The amorphous MnO2 with surface-rich oxygen vacancies can trigger the formation of more reactive oxygen species (ROS) and stronger O2 adsorption capability comparing with the crystalline MnO2, the corresponding results are characterized by XPS and EPR. Moreover, In Situ -DRIFTS coupled with DFT calculations revealed that the CH3SH could be transformed into CO32-/SO42-by ROS. Unexpectedly, the amorphous MnO2 also displayed excellent ac-tivity and stability towards to other typical S-VOCs, which is beneficial for the actual industrial application. The findings can provide novel insights into the design of highly efficient and stable catalysts to eliminate odor gaseous pollutants over a broad operating concentration window at room temperature. |
| Keyword | S-VOCs Amorphous MnO 2 Room Temperature Reaction Mechanism Environmental Implication |
| WOS ID | WOS:001006670900001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74327 |
| Collection | 有机地球化学国家重点实验室 |
| Corresponding Author | Hu, Yanan; Luo, Yongming |
| Affiliation | 1.Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Peoples R China 2.Kunming Univ Sci & Technol, Fac Chem Engn, Kunming 650500, Peoples R China 3.Higher Educ Key Lab Odorous Volatile Organ Cpds Po, Innovat Team Volatile Organ Cpds Pollutants Contro, Kunming 650500, Peoples R China 4.Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou 450052, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Jiangping,Su, Hong,Hu, Yanan,et al. Highly efficient degradation of sulfur-containing volatile organic compounds by amorphous MnO2 at room temperature: Implications for controlling odor pollutants[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2023,334:13. |
| APA | Liu, Jiangping.,Su, Hong.,Hu, Yanan.,Gong, Chenhao.,Lu, Jichang.,...&Luo, Yongming.(2023).Highly efficient degradation of sulfur-containing volatile organic compounds by amorphous MnO2 at room temperature: Implications for controlling odor pollutants.APPLIED CATALYSIS B-ENVIRONMENTAL,334,13. |
| MLA | Liu, Jiangping,et al."Highly efficient degradation of sulfur-containing volatile organic compounds by amorphous MnO2 at room temperature: Implications for controlling odor pollutants".APPLIED CATALYSIS B-ENVIRONMENTAL 334(2023):13. |
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