Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic Compounds
In this study, we developed a glycerol-mediated safe and facile method to synthesize colored titania nanoparticles (NPs) via solution route. Our method is considerably effective and greener than other options currently available. Colored titania NPs were produced by hydrolyzing TiCl<sub>4</...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/9/11/1586 |
| _version_ | 1811206283348410368 |
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| author | Rab Nawaz Chong Fai Kait Ho Yeek Chia Mohamed Hasnain Isa Lim Wen Huei |
| author_facet | Rab Nawaz Chong Fai Kait Ho Yeek Chia Mohamed Hasnain Isa Lim Wen Huei |
| author_sort | Rab Nawaz |
| collection | DOAJ |
| description | In this study, we developed a glycerol-mediated safe and facile method to synthesize colored titania nanoparticles (NPs) via solution route. Our method is considerably effective and greener than other options currently available. Colored titania NPs were produced by hydrolyzing TiCl<sub>4</sub> precursor in aqueous solution containing different concentrations of glycerol (0.0, 1.163, 3.834, and 5.815 mol/L) and subsequent calcination at 300 °C for 1 h. Our results highlight firstly that glycerol-mediated synthesis is unlikely to affect the anatase crystalline structure of TiO<sub>2</sub>, and secondly, that it would lead to coloration, band gap narrowing, and a remarkable bathochromic redshift of the optical response of titania. More importantly, the synthesized colored titania have Ti<sup>3+</sup> ions, which, at least in terms of our samples, is the major factor responsible for its coloration. These Ti<sup>3+</sup> species could induce mid gap states in the band gap, which significantly improve the visible light absorption capability and photocatalytic performance of the colored titania. The photocatalytic experiments showed that the colored TiO<sub>2</sub> NPs prepared in 1.163 mol/L aqueous glycerol solution displayed the best photocatalytic performance. Almost 48.17% of phenolic compounds and 62.18% of color were removed from treated palm oil mill effluent (POME) within 180 min of visible light irradiation. |
| first_indexed | 2024-04-12T03:46:15Z |
| format | Article |
| id | doaj.art-4d9e88744f4b4ef7acd2889edcc11d94 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-04-12T03:46:15Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-4d9e88744f4b4ef7acd2889edcc11d942022-12-22T03:49:08ZengMDPI AGNanomaterials2079-49912019-11-01911158610.3390/nano9111586nano9111586Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic CompoundsRab Nawaz0Chong Fai Kait1Ho Yeek Chia2Mohamed Hasnain Isa3Lim Wen Huei4Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, MalaysiaFundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, MalaysiaCivil and Environmental Engineering Department, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, MalaysiaCivil Engineering programme, Faculty of Engineering, Universiti Teknologi Brunei, Tungku Highway, Gadong BE1410, Brunei DarussalamAdvanced Oleochemical Technology Division (AOTD), Malaysian Palm Oil Board (MPOB), Bandar Baru Bangi 43000, Kajang, Selangor, MalaysiaIn this study, we developed a glycerol-mediated safe and facile method to synthesize colored titania nanoparticles (NPs) via solution route. Our method is considerably effective and greener than other options currently available. Colored titania NPs were produced by hydrolyzing TiCl<sub>4</sub> precursor in aqueous solution containing different concentrations of glycerol (0.0, 1.163, 3.834, and 5.815 mol/L) and subsequent calcination at 300 °C for 1 h. Our results highlight firstly that glycerol-mediated synthesis is unlikely to affect the anatase crystalline structure of TiO<sub>2</sub>, and secondly, that it would lead to coloration, band gap narrowing, and a remarkable bathochromic redshift of the optical response of titania. More importantly, the synthesized colored titania have Ti<sup>3+</sup> ions, which, at least in terms of our samples, is the major factor responsible for its coloration. These Ti<sup>3+</sup> species could induce mid gap states in the band gap, which significantly improve the visible light absorption capability and photocatalytic performance of the colored titania. The photocatalytic experiments showed that the colored TiO<sub>2</sub> NPs prepared in 1.163 mol/L aqueous glycerol solution displayed the best photocatalytic performance. Almost 48.17% of phenolic compounds and 62.18% of color were removed from treated palm oil mill effluent (POME) within 180 min of visible light irradiation.https://www.mdpi.com/2079-4991/9/11/1586colored titaniaglycerolti3+ ionsvisible light absorptionphotocatalytic performancephenolic compounds |
| spellingShingle | Rab Nawaz Chong Fai Kait Ho Yeek Chia Mohamed Hasnain Isa Lim Wen Huei Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic Compounds Nanomaterials colored titania glycerol ti3+ ions visible light absorption photocatalytic performance phenolic compounds |
| title | Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic Compounds |
| title_full | Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic Compounds |
| title_fullStr | Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic Compounds |
| title_full_unstemmed | Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic Compounds |
| title_short | Glycerol-Mediated Facile Synthesis of Colored Titania Nanoparticles for Visible Light Photodegradation of Phenolic Compounds |
| title_sort | glycerol mediated facile synthesis of colored titania nanoparticles for visible light photodegradation of phenolic compounds |
| topic | colored titania glycerol ti3+ ions visible light absorption photocatalytic performance phenolic compounds |
| url | https://www.mdpi.com/2079-4991/9/11/1586 |
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