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Enhanced Photocatalytic Activity of Hybrid $rGO@TiO_{2}$/CN Nanocomposite for Organic Pollutant Degradation under Solar Light Irradiation
| Content Provider | MDPI |
|---|---|
| Author | Lidija, Ćurković Tina, Radošević Kocijan, Martina Podlogar, Matejka |
| Copyright Year | 2021 |
| Description | The three-component hybrid $(rGO/TiO_{2}$/CN) nanocomposite was prepared in order to enhance the photocatalytic properties of anatase $TiO_{2}$ nanoparticles (NPs) under solar-like irradiation. The $rGO/TiO_{2}$/CN was prepared in a mixture of the reduced graphene oxide (rGO, 8 wt%), anatase $TiO_{2}$ nanoparticles (NPs), and graphitic carbon nitride $(g-C_{3}N_{4}$, 16 wt%). It was self-assembled through the one-step hydrothermal method, followed by an annealing process. The photocatalyst was thoroughly characterized by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), the Brunauer-Emmett-Teller (BET) nitrogen adsorption/desorption technique and UV-Vis diffuse reflectance spectroscopy (DRS). The photocatalytic activity of the $TiO_{2}$, $TiO_{2}$/rGO, $TiO_{2}$/CN and hybrid $rGO/TiO_{2}$/CN nanocomposite was studied through the degradation of a rhodamine B (RhB) aqueous solution under solar-like irradiation. The results showed that the highest photocatalytic activity was achieved by the $rGO/TiO_{2}$/CN mixture, which can be attributed to the synergistic effect of the incorporation of both rGO and $g-C_{3}N_{4}$ with $TiO_{2}$. Further, the influence of the pH value of the RhB dye aqueous solution and different water matrix (Milli-Q, tap, and alkaline water) on the photocatalytic efficiency of the $rGO/TiO_{2}$/CN nanocomposite was examined. In addition, a recycle test was performed for hybrid $rGO@TiO_{2}$/CN to investigate the effectiveness of the photodegradation of RhB dye in three successive cycles. The conducted results indicate that the pH value of RhB dye aqueous solution and water matrices play an important role in the photocatalytic degradation rate. |
| Starting Page | 1023 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal11091023 |
| Journal | Catalysts |
| Issue Number | 9 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-08-24 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Graphitic Carbon Nitride Reduced Graphene Oxide Hydrothermal Synthesis Hybrid Photocatalysis Rhodamine B Solar-like Irradiation Water Matrix |
| Content Type | Text |
| Resource Type | Article |
