Preparation and Characterization of TiO2@SiO2-Ag Nanospheres Photocatalyst, and Investigation of Its Photocatalytic Activity on Methylene Blue
Abstract
Titanium dioxide shows a tremendous potential for the decomposition of organic pollutants under UV and visible light irradiation. In this study TiO2 nanospheres @ mesoporous silica nanospheres (TiO2@SiO2) photocatalyst was synthesized by the sol-gel method. The synthesized TiO2/SiO2 photocatalyst was decorated by Ag nanoparticle. The decorated TiO2@SiO2–Ag photocatalyst by a hydrothermal method was characterized by scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The SEM results show that TiO2@SiO2–Ag nanospheres photocatalyst was uniformly formed. The EDS analysis proves that the nanospheres photocatalyst consists of Ti, Si, O and Ag. The TiO2@SiO2–Ag nanospheres photocatalyst exhibited better photocatalytic performance for degradation of methylene blue under direct UV illumination.
References
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Abstract
References
- 1. Ndong LBB, Ibondou MP, Gu X, Lu S, Qiu Z, Sui Q, Mbadinga SM. Enhanced Photocatalytic Activity of TiO2 Nanosheets by Doping with Cu for Chlorinated Solvent Pollutants Degradation. Industrial & Engineering Chemistry Research. 2014 Jan; 53(4):1368–1376.
- 2. Lam SM, Sin JC, Abdullah AZ, Mohamed AR. Photocatalytic TiO2/Carbon Nanotube Nanocomposites for Environmental Applications: An Overview and Recent Developments. Fullerenes, Nanotubes and Carbon Nanostructures. 2013 Mar; 22(5):471–509.
- 3. Mendonca VRD, Mourao HAJL, Malagutti AR, Ribeiro C. The Role of the Relative Dye/Photocatalyst Concentration in TiO2 Assisted Photodegradation Process. Photochemistry and Photobiology. 2013 Oct; 90(1):66–72.
- 4. Wang DH, Jia L, Wu XL, Lu LQ, Xu AW. One-step hydrothermal synthesis of N-doped TiO2/C nanocomposites with high visible light photocatalytic activity. Nanoscale. 2012 Sep; 4(2):576–584.
- 5. Singh S, Singh PK, Mahalingam H. Novel Floating Ag+-Doped TiO2/Polystyrene Photocatalysts for the Treatment of Dye Wastewater. Industrial & Engineering Chemistry Research. 2014 Sep; 53(42): 16332–16340.
- 6. Rayalu SS, Jose D, Mangrulkar PA, Joshi M, Hippargi G, Shrestha K, Klabunde K. Photodeposition of AuNPs on metal oxides: Study of SPR effect and photocatalytic activity International Journal of Hydrogen Energy. 2014 Mar; 39(8):3617–3624.
- 7. Yang X, Cui H, Li Y, Qin J, Zhang R, Tang H. Fabrication of Ag3PO4-Graphene Composites with Highly Efficient and Stable Visible Light Photocatalytic Performance. ACS Catalysis. 2013 Jan; 3(3):363–369.
- 8. Neppolian B, Bruno A, Bianchi CL, Ashokkumar M. Graphene oxide based Pt–TiO2 photocatalyst: Ultrasound assisted synthesis, characterization and catalytic efficiency Ultrasonics Sonochemistry. 2012 Jan; 19(1):9–15.
Details
| Subjects | Engineering |
|---|---|
| Journal Section | Full-length articles |
| Authors | |
| Publication Date | October 20, 2017 |
| Submission Date | October 20, 2017 |
| Acceptance Date | October 19, 2017 |
| Published in Issue | Year 2017 Özel Sayı 1 |
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J. Turk. Chem. Soc., Sect. B: Chem. Eng. (JOTCSB)