Carbon-based TiO2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules
| Autor: | G. Nagaraju, Chetana Sabbanahalli, Manjunath Shetty, Ravi Mudike, Murthy Muniyappa, Kanchugarakoppal S. Rangappa, Chitrabanu C.P, Ananda Kumar C.S, Jagadeesh Babu Sriramoju, Prasanna D. Shivaramu, Dinesh Rangappa, Navya Rani Marilingaiah |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Nanocomposite Process Chemistry and Technology Nanoparticle chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Chemical engineering 0103 physical sciences Titanium dioxide Materials Chemistry Ceramics and Composites Photocatalysis 0210 nano-technology Absorption (electromagnetic radiation) Carbon Visible spectrum |
| Zdroj: | Ceramics International. 47:10314-10321 |
| ISSN: | 0272-8842 |
| Popis: | Application of brown titanium dioxide (TiO2-x) and its modified composite forms in the photocatalytic decomposition of organic pollutants in the environment is a promising way to provide solutions for environmental redemption. Herein, we report the synthesis of effective and stable TiO2-x nanoparticles with g-C3N4, RGO, and multiwalled carbon nanotubes (CNTs) using a simple hydrothermal method. Among all the as-synthesized samples, excellent photocatalytic degradation activity was observed for RGO-TiO2-x nanocomposite with high rate constants of 0.075 min−1, 0.083 min−1 and 0.093 min−1 for methylene blue, rhodamine-B, and rosebengal dyes under UV–Visible light irradiation, respectively. The altered bandgap (1.8 eV) and the large surface area of RGO-TiO2-x nanocomposite impacts on both absorption of visible light and efficiency of photogenerated charge electron (e−)/hole (h+) pair separation. This resulted in enhanced photocatalytic property of carbon-based TiO2-x nanocomposites. A systematic study on the influence of different carbon nanostructures on the photocatalytic activity of brown TiO2-x is carried out. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect