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- Publisher Website: 10.1016/j.cattod.2018.05.019
- Scopus: eid_2-s2.0-85047337886
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Article: Effect of K+ ions on efficient room-temperature degradation of formaldehyde over MnO2 catalysts
Title | Effect of K+ ions on efficient room-temperature degradation of formaldehyde over MnO2 catalysts |
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Authors | |
Keywords | Formaldehyde Manganese oxide K+ Catalytic oxidation Indoor air |
Issue Date | 2019 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cattod |
Citation | Catalysis Today, 2019, v. 327, p. 154-160 How to Cite? |
Abstract | δ-MnO2 was prepared via a facile in-situ redox reaction and used for catalytic oxidation of HCHO, a major indoor air pollutant. The washing treatment during catalyst preparation could impose great effect on content of K+ and catalytic activity. δ-MnO2 catalyst without washing treatment contains the highest content of K+ ion and exhibits the best catalytic activity among various δ-MnO2 samples. The HCHO removal efficiency keeps at 100% for first 600 min. The δ-MnO2 samples were characterized by advanced technologies including XRD, Raman, XPS, TPR, TPD and in-situ DRIFTS. The XPS results indicates that K+ ions increases the AOS value of Mn and the ratio of surface-adsorbed oxygen over δ-MnO2. The content of K+ ions improves the amount and redox ability of surface mobile oxygen species, enhancing catalytic oxidation of HCHO. |
Persistent Identifier | http://hdl.handle.net/10722/284077 |
ISSN | 2023 Impact Factor: 5.2 2023 SCImago Journal Rankings: 1.022 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Fang, R | - |
dc.contributor.author | Feng, Q | - |
dc.contributor.author | Huang, H | - |
dc.contributor.author | Ji, J | - |
dc.contributor.author | He, M | - |
dc.contributor.author | Zhan, Y | - |
dc.contributor.author | Liu, B | - |
dc.contributor.author | Leung, DYC | - |
dc.date.accessioned | 2020-07-20T05:55:54Z | - |
dc.date.available | 2020-07-20T05:55:54Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Catalysis Today, 2019, v. 327, p. 154-160 | - |
dc.identifier.issn | 0920-5861 | - |
dc.identifier.uri | http://hdl.handle.net/10722/284077 | - |
dc.description.abstract | δ-MnO2 was prepared via a facile in-situ redox reaction and used for catalytic oxidation of HCHO, a major indoor air pollutant. The washing treatment during catalyst preparation could impose great effect on content of K+ and catalytic activity. δ-MnO2 catalyst without washing treatment contains the highest content of K+ ion and exhibits the best catalytic activity among various δ-MnO2 samples. The HCHO removal efficiency keeps at 100% for first 600 min. The δ-MnO2 samples were characterized by advanced technologies including XRD, Raman, XPS, TPR, TPD and in-situ DRIFTS. The XPS results indicates that K+ ions increases the AOS value of Mn and the ratio of surface-adsorbed oxygen over δ-MnO2. The content of K+ ions improves the amount and redox ability of surface mobile oxygen species, enhancing catalytic oxidation of HCHO. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cattod | - |
dc.relation.ispartof | Catalysis Today | - |
dc.subject | Formaldehyde | - |
dc.subject | Manganese oxide | - |
dc.subject | K+ | - |
dc.subject | Catalytic oxidation | - |
dc.subject | Indoor air | - |
dc.title | Effect of K+ ions on efficient room-temperature degradation of formaldehyde over MnO2 catalysts | - |
dc.type | Article | - |
dc.identifier.email | Leung, DYC: ycleung@hku.hk | - |
dc.identifier.authority | Leung, DYC=rp00149 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.cattod.2018.05.019 | - |
dc.identifier.scopus | eid_2-s2.0-85047337886 | - |
dc.identifier.hkuros | 311337 | - |
dc.identifier.volume | 327 | - |
dc.identifier.spage | 154 | - |
dc.identifier.epage | 160 | - |
dc.identifier.isi | WOS:000459892900016 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0920-5861 | - |