Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst
A conceptual air purifier harvesting fluorescent room lights was tested in this study. Visible photocatalysis was applied to facilitate the degradation of volatile organic compounds (VOCs) on a highly efficient visible light photocatalyst, Pt/N-TiO2 synthesised via a sol–gel process. The as-prepared...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
elsevier
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/24604 |
| _version_ | 1848751476653948928 |
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| author | Sun, Hongqi Ullah, Ruh Chong, Siewhui Ang, Ha Ming Tade, Moses Wang, Shaobin |
| author_facet | Sun, Hongqi Ullah, Ruh Chong, Siewhui Ang, Ha Ming Tade, Moses Wang, Shaobin |
| author_sort | Sun, Hongqi |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A conceptual air purifier harvesting fluorescent room lights was tested in this study. Visible photocatalysis was applied to facilitate the degradation of volatile organic compounds (VOCs) on a highly efficient visible light photocatalyst, Pt/N-TiO2 synthesised via a sol–gel process. The as-prepared photocatalyst was characterised by many techniques, such as XRD, XPS, UV–vis DRS, N2 adsorption and SEM, etc. XPS spectra revealed that platinum was at a chemical state of 2+, while nitrogen existed as NOx species. The unique chemical compositions made the photocatalyst respond to visible light with a band gap of 2.69 eV, and present a broad absorption shoulder extended further into infrared region. The photocatalytic activities under irradiations of λ > 387, 430 and 490 nm were evaluated by photodegradation of phenol solutions. Under UV–vis light, the Pt/N-TiO2 exhibited 5.5 times higher activity than Degussa P25. Various gaseous pollutants were degraded by employing the Pt/N-TiO2 in a batch reactor. The capability of photodegradation of VOCs under room lights was also proven by the decomposition of gaseous toluene in a continuous reactor using fluorescent lamps (6 × 10 W). The mechanism of the enhanced activity in degradation of VOCs and potential application were discussed. |
| first_indexed | 2025-11-14T07:53:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-24604 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:53:20Z |
| publishDate | 2011 |
| publisher | elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-246042017-09-13T16:08:11Z Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst Sun, Hongqi Ullah, Ruh Chong, Siewhui Ang, Ha Ming Tade, Moses Wang, Shaobin A conceptual air purifier harvesting fluorescent room lights was tested in this study. Visible photocatalysis was applied to facilitate the degradation of volatile organic compounds (VOCs) on a highly efficient visible light photocatalyst, Pt/N-TiO2 synthesised via a sol–gel process. The as-prepared photocatalyst was characterised by many techniques, such as XRD, XPS, UV–vis DRS, N2 adsorption and SEM, etc. XPS spectra revealed that platinum was at a chemical state of 2+, while nitrogen existed as NOx species. The unique chemical compositions made the photocatalyst respond to visible light with a band gap of 2.69 eV, and present a broad absorption shoulder extended further into infrared region. The photocatalytic activities under irradiations of λ > 387, 430 and 490 nm were evaluated by photodegradation of phenol solutions. Under UV–vis light, the Pt/N-TiO2 exhibited 5.5 times higher activity than Degussa P25. Various gaseous pollutants were degraded by employing the Pt/N-TiO2 in a batch reactor. The capability of photodegradation of VOCs under room lights was also proven by the decomposition of gaseous toluene in a continuous reactor using fluorescent lamps (6 × 10 W). The mechanism of the enhanced activity in degradation of VOCs and potential application were discussed. 2011 Journal Article http://hdl.handle.net/20.500.11937/24604 10.1016/j.apcatb.2011.08.017 elsevier restricted |
| spellingShingle | Sun, Hongqi Ullah, Ruh Chong, Siewhui Ang, Ha Ming Tade, Moses Wang, Shaobin Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst |
| title | Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst |
| title_full | Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst |
| title_fullStr | Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst |
| title_full_unstemmed | Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst |
| title_short | Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst |
| title_sort | room-light-induced indoor air purification using an efficient pt/n-tio2 photocatalyst |
| url | http://hdl.handle.net/20.500.11937/24604 |