Article: Amalgamation of N-graphene quantum dots with nanocubic like TiO2: an insight study of sunlight sensitive photocatalysis
Environmental science and pollution research international. 2019 Feb., v. 26, no. 4
2019
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 ... ...
| 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. |
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| Keywords | absorbance ; bisphenol A ; chemical analysis ; free radicals ; graphene ; irradiation ; mixing ; oxygen ; photocatalysis ; photocatalysts ; pollutants ; quantum dots ; solar radiation ; titanium dioxide |
| Language | English |
| Dates of publication | 2019-02 |
| Size | p. 3455-3464. |
| Publishing place | Springer Berlin Heidelberg |
| Document type | Article |
| ZDB-ID | 1178791-0 |
| ISSN | 1614-7499 ; 0944-1344 |
| ISSN (online) | 1614-7499 |
| ISSN | 0944-1344 |
| DOI | 10.1007/s11356-018-3821-1 |
| Database | NAL-Catalogue (AGRICOLA) |
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