- Title
- Development of phthalocyanine functionalised TiO 2 and ZnO nanofibers for photodegradation of methyl orange
- Creator
- Mapukata, Sivuyisiwe, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2020
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/186323
- Identifier
- vital:44485
- Identifier
- xlink:href="https://doi.org/10.1039/D0NJ03326J"
- Description
- The photocatalytic activity of TiO2 and ZnO based catalysts, which is based on their ability to generate electron–hole pairs upon photoillumination is limited due to their wide band gaps and lack of efficient retrievability post-application. This work reports on the fabrication, characterisation and comparison of electrospun TiO2 and ZnO nanofibers when bare vs when functionalised with a phthalocyanine. The generated photocatalysts are attractive because they absorb visible light and are easily retrievable and hence reusable. With the Pc anchored onto their surfaces, the anatase TiO2 nanofibers and the wurzite ZnO nanofibers possessed singlet oxygen quantum yields of 0.22 and 0.16 in water, respectively. Evaluation of the photocatalytic efficiencies of the nanofibers was conducted by studying the photodegradation of methyl orange. The Pc decorated nanofibers were found to be more effective photocatalysts than the bare ones with the phthalocyanine TiO2 nanofibers being the best. The degradation kinetics were found to follow pseudo first order kinetics and obeyed the Langmuir Hinshelwood model. The nanocatalysts reported herein are therefore feasible candidates for real-life water purification applications.
- Format
- computer, online resource, application/pdf, 1 online resource (11 pages), pdf
- Publisher
- Royal Society of Chemistry
- Language
- English
- Relation
- New Journal of Chemistry, Mapukata, S. and Nyokong, T., 2020. Development of phthalocyanine functionalised TiO 2 and ZnO nanofibers for photodegradation of methyl orange. New Journal of Chemistry, 44(38), pp.16340-16350., New Journal of Chemistry volume 44 number 38 p. 16340 2020 1369-9261
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Royal Society of Chemistry Terms and Conditions Statement (https://0-www.rsc.org.wam.seals.ac.za/help-legal/)
- Rights
- Open Access
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Collections
RU Department of Chemistry
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details | SOURCE1 | Development of phthalocyanine functionalised TiO 2 and ZnO nanofibers for photodegradation of methyl orange.pdf | 3 MB | Adobe Acrobat PDF | View Details |