| Autor: |
Saud, Prem, Ghouri, Zafar, K. Hassan, Mohamed, Barakat, Nasser, Kim, Hak |
| Předmět: |
|
| Zdroj: |
Journal of Materials Science: Materials in Electronics; Sep2016, Vol. 27 Issue 9, p9593-9598, 6p |
| Abstrakt: |
Well-dispersed λ-CaCO thin layers @ rGO as photo-catalyst for the removal of organic pollutant was synthesized by hydrothermal treatment. The coordination between the functional groups on graphene and Ca ion provides the path for the nucleation of CaCO and form a vander waal force with graphene sheet. The presented λ-CaCO@rGO nanocomposite was characterized by using X-ray diffraction, FTIR, field-emission scanning electron microscopy and high resolution transmission electron microscopy analysis. The photo-catalytic activities of as-prepared CaCO nanoparticles, rGO and λ-CaCO@rGO nanocomposite were evaluated by the photo-catalytic degradation of methyl orange in aqueous solutions under visible light irradiation. Alone, it is expected, that CaCO and graphene do have insignificant photo-catalytic activity due to optical properties of both materials. However, synthesis of λ-CaCO thin layers @ rGO shows good performance due to alteration of band gap. Therefore, compared to pristine CaCO nanoparticles and rGO, the λ-CaCO@rGO photo-catalysts showed significant enhancement in photocatalytic activity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink