Research ArticleOpen AccessGoogle Scholar indexed
C@Ag/TiO<sub>2</sub>: A Highly Efficient and Stable Photocatalyst Active under Visible Light
School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
- 1 School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
- 2 School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
- 3 School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
- 4 School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
- 5 School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
- 6 School of Chemistry Science & Technology, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang Normal University, Zhanjiang, China
World Journal of Nano Science and Engineering·Volume 03 (2013)·Pages 1–5·Published 31 March 2013·DOI10.4236/wjnse.2013.31001
Copy link · social · email
Abstract
In this paper, preparation and characterization of C@Ag/TiO 2 nanospheres compound photocatalysts was reported. C@Ag nanosphere was firstly synthesized via hydrothermal reaction, and followed by a sol-gel process to obtain the functionalized C@Ag/TiO 2 nanosphere which has highly efficient visible light catalytic ability towards methyl orange (MO). The morphology of the obtained compound was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) technologies. From which we can see that the as-prepared samples show a spherical structure with a diameter of approximately 200 nm, and the silver particle in core was about 10 nm. The cata lytic ability of the synthesized photocatalysts under visible light irradiation shows that C@Ag/TiO 2 possesses higher photocatalytic activity towards MO degradation than that of N-P25 (TiO 2 ). Furthermore, the C@Ag/TiO 2 photocatalysts exhibited excellent reusability with almost no change after five runs. Finally, the possible photocatal y tic mechanism of catalyst under visible light was discussion and proposed.
KeywordsNanoparticlesSol-Gel PreparationVisible Light PhotocatalystSurface Plasma Resonance
- M. Shang, W. Z. Wang, S. M. Sun, J. Ren, L. Zhou and L. Zhang, “Efficient Visible Light-Induced Photocatalytic Degradation of Contaminant by Spindle-like PANI/ BiVO4,” The Journal of Physical Chemistry C, Vol. 113, No. 47, 2009, pp. 20228-20233. doi:10.1021/jp9067729
- R. Asahi, T. Morikawa, T. Ohwaki, K. Aoki and Y. Taga, “Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides,” Science, Vol. 293, No. 5528, 2001, pp. 269-271. doi:10.1126/science.1061051
- R. Shi, J. Lin, Y. J. Wang, J. Xu and Y. F. Zhu, “Visible-Light Photocatalytic Degradation of BiTaO4 Photocatalyst and Mechanism of Photocorrosion Suppression,” The Journal of Physical Chemistry C, Vol. 114, No. 14, 2010, pp. 6472-6477. doi:10.1021/jp9101866
- L. Ge, M. X. Xu and H. B. Fang, “Synthesis of Novel Photocatalytic InVO4-TiO2 Thin Films with Visible Light Photoactivity,” Materials Letters, Vol. 61, No. 1, 2007, pp. 63-66. doi:10.1016/j.matlet.2006.04.006
- L. Ge, M. X. Xu and H. B. Fang, “Preparation of TiO2 Thin Films from Autoclaved Sol Containing Needle-like Anatase Crystals,” Applied Surface Science, Vol. 253, No. 2, 2006, pp. 720-725. doi:10.1016/j.apsusc.2005.12.162
- M. C. Long, W. M. Cai, J. Cai, B. X. Zhou, X. Y. Chai and Y. H. Wu, “Efficient Photocatalytic Degradation of Phenol over Co3O4/BiVO4 Composite under Visible Light Irradiation,” The Journal of Physical Chemistry B, Vol. 110, No. 41, 2006, pp. 20211-20216. doi:10.1021/jp063441z
- X. S. Zhou, F. Peng, H. J. Wang, H. Yu and J. Yang, “Effect of Nitrogen-Doping Temperature on the Structure and Photocatalytic Activity of the B,N-Doped TiO2,” Journal of Solid State Chemistry, Vol. 184, No. 1, 2011, pp. 134-140. doi:10.1016/j.jssc.2010.10.039
- X. S. Zhou, F. Peng, H. J. Wang and H. Yu, “Boron and Nitrogen-Codoped TiO2 Nanorods: Synthesis, Characterization, and Photoelectrochemical Properties,” Journal of Solid State Chemistry, Vol. 184, No. 11, 2011, pp. 3002-3007. doi:10.1016/j.jssc.2011.09.017
- M. Bowker, D. James, P. Stone, R. Bennett, N. Perkins, L. Millard, et al, “Catalysis at the Metal-Support Interface: Exemplified by the Photocatalytic Reforming of Methanol on Pd/TiO2,” Journal of Catalysis, Vol. 217, No. 2, 2003, pp. 427-433. doi:10.1016/S0021-9517(03)00074-5
- Y. X. Li, G. Lu and S. Li, “Photocatalytic Oxidation of Selected Fluorenols on TiO2 Semiconductor,” Journal of Photochemistry and Photobiology A: Chemistry, Vol. 152, No. 1-3, 2002, pp. 219-228. doi:10.1016/S1010-6030(02)00210-1