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- Publisher Website: 10.1021/acs.inorgchem.0c02869
- Scopus: eid_2-s2.0-85096618605
- PMID: 33179923
- WOS: WOS:000599190300093
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Article: Trace-Level Fluorination of Mesoporous TiO2 Improves Photocatalytic and Pb(II) Adsorbent Performances
Title | Trace-Level Fluorination of Mesoporous TiO2 Improves Photocatalytic and Pb(II) Adsorbent Performances |
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Authors | |
Issue Date | 2020 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/ic |
Citation | Inorganic Chemistry, 2020, v. 59 n. 23, p. 17631-17637 How to Cite? |
Abstract | Fluorination is an effective way of tuning the physicochemical property and activity of TiO2 nanocrystallites, which usually requires a considerable amount of hydrofluoric acid (or NH4F) for a typical F/Ti molar ratio, RF, of 0.5–69.0 during synthesis. This has consequential environmental issues due to the high toxicity and hazard of the reactants. In the present work, an environmentally benign fluorination approach is demonstrated that uses only a trace amount of sodium fluoride with an RF of 10–6 during synthesis. While it maintained the desirable high surface area (102.4 m2/g), the trace-level fluorination enabled significant enhancements on photocatalytic activities (e.g., a 56% increase on hydrogen evolution rate) and heavy metal Pb(II) removal (31%) of the mesoporous TiO2. This can be attributed to enriched Ti3+ and localized spatial charge separation due to fluorination as proved by X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance spectroscopy (EPR), and density functional theory (DFT) analyses. |
Persistent Identifier | http://hdl.handle.net/10722/306491 |
ISSN | 2023 Impact Factor: 4.3 2023 SCImago Journal Rankings: 0.928 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Xu, Y | - |
dc.contributor.author | Tay, TF | - |
dc.contributor.author | Cui, L | - |
dc.contributor.author | Fan, J | - |
dc.contributor.author | Niu, C | - |
dc.contributor.author | Chen, D | - |
dc.contributor.author | Guo, ZX | - |
dc.contributor.author | Sun, C | - |
dc.contributor.author | Zhang, XL | - |
dc.contributor.author | Caruso, RA | - |
dc.date.accessioned | 2021-10-22T07:35:22Z | - |
dc.date.available | 2021-10-22T07:35:22Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Inorganic Chemistry, 2020, v. 59 n. 23, p. 17631-17637 | - |
dc.identifier.issn | 0020-1669 | - |
dc.identifier.uri | http://hdl.handle.net/10722/306491 | - |
dc.description.abstract | Fluorination is an effective way of tuning the physicochemical property and activity of TiO2 nanocrystallites, which usually requires a considerable amount of hydrofluoric acid (or NH4F) for a typical F/Ti molar ratio, RF, of 0.5–69.0 during synthesis. This has consequential environmental issues due to the high toxicity and hazard of the reactants. In the present work, an environmentally benign fluorination approach is demonstrated that uses only a trace amount of sodium fluoride with an RF of 10–6 during synthesis. While it maintained the desirable high surface area (102.4 m2/g), the trace-level fluorination enabled significant enhancements on photocatalytic activities (e.g., a 56% increase on hydrogen evolution rate) and heavy metal Pb(II) removal (31%) of the mesoporous TiO2. This can be attributed to enriched Ti3+ and localized spatial charge separation due to fluorination as proved by X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance spectroscopy (EPR), and density functional theory (DFT) analyses. | - |
dc.language | eng | - |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/ic | - |
dc.relation.ispartof | Inorganic Chemistry | - |
dc.rights | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Inorganic Chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.inorgchem.0c02869 | - |
dc.title | Trace-Level Fluorination of Mesoporous TiO2 Improves Photocatalytic and Pb(II) Adsorbent Performances | - |
dc.type | Article | - |
dc.identifier.email | Guo, ZX: zxguo@hku.hk | - |
dc.identifier.authority | Guo, ZX=rp02451 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1021/acs.inorgchem.0c02869 | - |
dc.identifier.pmid | 33179923 | - |
dc.identifier.scopus | eid_2-s2.0-85096618605 | - |
dc.identifier.hkuros | 329131 | - |
dc.identifier.volume | 59 | - |
dc.identifier.issue | 23 | - |
dc.identifier.spage | 17631 | - |
dc.identifier.epage | 17637 | - |
dc.identifier.isi | WOS:000599190300093 | - |
dc.publisher.place | United States | - |