One-pot photochemical synthesis of solution-stable TiO2-polypyrrole nanocomposite for the photodegradation of methyl orange

Buenviaje, Salvador C, Usman, Ken Aldren S, Edañol, Yasmin De Guzman, Maylem, Genes P and Payawan, Leon M 2020, One-pot photochemical synthesis of solution-stable TiO2-polypyrrole nanocomposite for the photodegradation of methyl orange, in ICAMR 2020 : Proceedings of the 10th International Conference on Advanced Materials Research 2020, Trans Tech Publications, Zurich, Switzerland, pp. 217-222, doi: 10.4028/www.scientific.net/KEM.853.217.


Title One-pot photochemical synthesis of solution-stable TiO2-polypyrrole nanocomposite for the photodegradation of methyl orange
Author(s) Buenviaje, Salvador C
Usman, Ken Aldren SORCID iD for Usman, Ken Aldren S orcid.org/0000-0001-7102-6847
Edañol, Yasmin De Guzman
Maylem, Genes P
Payawan, Leon M
Conference name Advanced Materials Research. Conference (10th : 2020 : Okinawa, Japan)
Conference location Okinawa, Japan
Conference dates 2020/01/17 - 2020/01/20
Title of proceedings ICAMR 2020 : Proceedings of the 10th International Conference on Advanced Materials Research 2020
Editor(s) Wu, AF
Tak Lau, AK
Publication date 2020
Series Advanced Materials Research Conference
Start page 217
End page 222
Total pages 6
Publisher Trans Tech Publications
Place of publication Zurich, Switzerland
Keyword(s) kinetics
nanomaterials
photocatalysis
TiO2
Summary Photocatalysis is a promising technology used in wastewater treatment. However, the practical application of this approach has been hindered by several factors. One issue is the aggregation of the photocatalyst in solution which leads to significant decrease in catalytic efficiency. Recent innovations in photochemical research have geared towards improving the colloidal stability of well-known photocatalysts such as titanium dioxide (TiO2). In this study, a simple method of imparting colloidal stability to TiO2, through one-pot photo-polymerized polypyrrole (PPy) nanoparticle coatings were demonstrated. The resulting TiO2-PPy (TP) dispersions exhibited excellent resistance to aggregation as evident in their uniform particle size distribution (diameter = 81.40 ± 6.58 nm, polydispersity index = 0.412 ± 0.037) and stable zeta-potential values (ζ = 33.15 ± 4.35). The optimum TiO2 to polymer ratio also resulted to significant lowering in band-gap energy (from 3.54 eV to 3.15 eV) which is an indicator of improved photocatalytic properties. Photodegradation of a model pollutant, methyl orange (MO) performed at optimal lightning condition and 4TP dosage showed 35% /hour photocatalytic efficiency. Lastly, kinetic studies suggest that the catalytic performance is dependent on the pollutant concentration as shown by a second-order MO degradation with rate constant of 306.856 x 10-7 M-1 s-1 and proposed rate law of R = k [MO]2. The study had also indicated the chemical conversion of MO to CO2by measuring about 43% decrease in total organic carbon in an hour.
ISBN 9783035716481
ISSN 1013-9826
1662-9795
Language eng
DOI 10.4028/www.scientific.net/KEM.853.217
Indigenous content off
Field of Research 09 Engineering
HERDC Research category E1 Full written paper - refereed
ERA Research output type E Conference publication
Persistent URL http://hdl.handle.net/10536/DRO/DU:30142541

Document type: Conference Paper
Collections: Institute for Frontier Materials
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