Lim, Ping Feng and Leong, Kah Hon and Sim, Lan Ching and Azrina, Abd Aziz and Saravanan, Pichiah (2019) Amalgamation of N-graphene quantum dots with nanocubic like TiO2 : an insight study of sunlight sensitive photocatalysis. Environmental Science and Pollution Research, 26 (4). pp. 3455-3464. ISSN 1614-7499. (Published)
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Abstract
In this work, a sunlight-sensitive photocatalyst of nanocubic-like titanium dioxide (TiO2) and N-doped graphene quantum dots (N-GQDs) is developed through a simple hydrothermal and physical mixing method. The successful amalgamation composite photocatalyst characteristics were comprehensively scrutinized through various physical and chemical analyses. A complete removal of bisphenol A (BPA) is attained by a synthesized composite after 30 min of sunlight irradiation as compared to pure TiO2. This clearly proved the unique contribution of N-GQDs that enhanced the ability of light harvesting especially under visible light and near-infrared region. This superior characteristic enables it to maximize the absorbance in the entire solar spectrum. However, the increase of N-GQDs weight percentage has created massive oxygen vacancies that suppress the generation of active radicals. This resulted in a longer duration for a complete removal of BPA as compared to lower weight percentage of N-GQDs. Hence, this finding can offer a new insight in developing effective sunlight-sensitive photocatalysts for various complex organic pollutants degradation.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | N-Graphene quantum dots; Nanocubic-like TiO2; Bisphenol A; Sunlight; Visible light; Near infrared |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Engineering Technology |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 07 Sep 2020 07:29 |
| Last Modified: | 07 Sep 2020 07:29 |
| URI: | http://umpir.ump.edu.my/id/eprint/27939 |
| Download Statistic: | View Download Statistics |
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