| Autor: |
Thillai Sivakumar Natarajan, Praveen Kumar Gopi, Kalithasan Natarajan, Hari C. Bajaj, Rajesh J. Tayade |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Water-Energy Nexus, Vol 4, Iss , Pp 103-112 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2588-9125 |
| DOI: |
10.1016/j.wen.2021.07.001 |
| Popis: |
The present study investigates the photocatalytic degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D), a hazardous herbicide using TiO2/Graphene oxide nanocomposite photocatalysts. The nanocomposite photocatalysts were synthesized via solvothermal method by varying the weight percentage of graphene oxide. The nanocomposite photocatalysts were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer Emmet Teller (BET) adsorption isotherm, Fourier-transform infrared (FT-IR) and UV–visible-diffuse reflectance spectroscopy (UV–Vis-DRS) analysis. The XRD pattern of nanocomposite was found unaltered, whereas a significant change around 33–91% was observed in the surface area of nanocomposites as compared to the pristine TiO2. The UV–Vis DRS study showed a blue shift in the band edge of the composites around 21–29 nm. The complete photocatalytic degradation of 2,4-D was achieved using TiO2/GO7% catalyst within 4 h of reaction under UV-light irradiation. The photocatalytic activity of the synthesized nanocomposite photocatalysts was also compared with the standard Degussa P-25 TiO2 photocatalyst. The order of photocatalytic activity of the synthesized photocatalysts were TiO2/GO7% > P25-TiO2 > TiO2/GO5% > TiO2/GO2% > TiO2/GO1% > TiO2/GO10% > TiO2/GO0.5% > Pristine-TiO2. This study offers a better platform for the synthesis of new composite photocatalytic materials for environment abatement by the degradation of organic pollutants. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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