EFEK DOPANT TERHADAP STRUKTUR DAN KARAKTER DARI FOTOKATALIS POWDER TITANIA
DOI:
https://doi.org/10.25077/jrk.v2i1.145Abstract
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ABSTRACT
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The structure and characterization of the titania (M-TiO2) can be modified by metal doped and calcinations temperatures variation by sol-gel method. Characterization of gel and M-TiO2 powder realized by FT-IR, TGA, XRD, Photo Optic and SEM. Titania has two crystal structures such as anatase and rutile. Anatase structures shown higher photocatalytic properties than rutile. The crystal structure was characterized to JCPS reference no. 21-1272, 2Ө : 25.3° identically as anatase structure and 2Ө : 27.3° as rutile. Structure modification is depend on calcinations temperature change. At 400°C the anatase structure was formed. The anatase intensity was increased at 500°C and at 600°C anatase transportation to rutile was found and anatase mixture was obtained. Several types of dopant can inhibit anatase to rutil transformation process at temperature ≥ 600°C. Park et al.,[1] reported that calcinations temperature and valence ion dopant influence the crystal size. Based on Scherrer’s equation the crystal size can be calculated by using the XRD  data. The crystal size of maximum intensity which was identified as anatase structure at 500°C as following Fe-TiO2 10.6 nm, MoTiO2 16.8 nm.  M-TiO2 character through inhibition of E. Coli bacteria growth was great infulenced by particle size and dopant ion type. This character shown by MIC value (Minimal Inhibition Concentration)) of each Fe, Mo-TiO2 between 0.35 – 0.45%.
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Keywords : crystal structure, characterization, titania, sol-gel
References
S. E. Park, H. Joo, J. W. Kang, Effect of impurities in TiO2 thin films on trichloroethylene conversion, Solar Energy Materials & Solar Cells, 83 : 39-53, (2004).
N. Negishi, T. Iyoda, K. Hashimoto, and A. Fujishima, Preparation of Transparent TiO2 Thin Film Photocatalyst and Its Photocatalytic Activity, Chemistry Letters, 1995, 841-842.
L. Znaidi, R. Seraphimova, J. F. Bocquet, C. Colbeau-Justin, C. Pommier, A semi-continuous process for the synthesis of nanosize TiO2 powder and their use as photocatalysts, Materials Research Bulletin, 36 : 811-825, (2001).
M. Tazawa, M. Okada, K. Yoshimura, S. Ikezawa, Photocatalytic heat mirror with a thick titanium dioxide layer, Solar Energy Materials & Solar Cells, 84: 159-170, (2004).
S. Qourzal, A. Assabbane, Y. Ait-Ichou, Synthesis of TiO2 via hydrolysisof Titanium tetraisopropoxide and its photocatalytic activity on a suspended mixture with activated carbon in the degradation of 2-napthol, J. Photochemistry and Photobiology A: Chemistry, 163 : 317-321, (2004).
J. A. Rodriquez, J. Hrbek, J. C. Hanson, A. L. Frenkel, Z. Chang, J. Dvorak, T. Jirsak, J. Y. Kim, and G. Liu, Catalysis at the NSLS: Importance of Oxygen vacancies in the Behavior of Oxide Catalysts, NSLS Activity Report, 2: 56-58, (2001).
A. Yasumori, K. Ishizu, S. Hayashi, and K. Okada, Preparation of a TiO2 based multiple layer thin film photocatalyst, J. Mater. Chem., 8(11): 2521-2524, (1998).
M. Hoffman, S. T. Martin, M. Choi and D. W. Bahnemann, Enviromental Application of Semiconductor Photocatalysis, Chem. Rev., 95: 97, (1995).
A. L. Linsebigler, G. Lu, and J. T. Yates, Jr, Photocatalysis on Surfaces: Principles, Mechanisms, and Selected Results, Chem. Rev., 95 : 735-758, (1995).
A. Fuerte, M. D. Hernandez-Alonso, A. J. Maira, A. Martinez-Arias, M. Fernandez-Gareia, J. C. Conesa, and J. Soria, Visible Light-Activated Nanosized doped-TiO2 Photocatalysts, Chem. Commun., : 2718-2719, (2001).
H. Y. Zhu, J. A. Orthman, J. -Y. Li, J.-C. Zhao, G.J. Churchman, and E. F. Vansant, Novel Composites of TiO2 (anatase) and Silicate Nanoparticles, Chem. Mater., 14: 5037-5044, (2002).
C. C. Wang, and J. Y. Ying, Sol-gel Synthesis and Hydrothermal Processing of Anatase and Rutile Titania Nanocrystals, Chem. Mater., 11: 3113-3120, (1999).
X.-Z. Ding, Y.-Z. He, Study of the room temperature ageing effect on structural evolution of gel-derived nanocrystalline titania powders, J. Materials Science Letters, 15: 320-322, (1996).
Y. Miyake, H. Tada, Photocatalytic Degradation of Methylene Blue with Metal Doped mesoporous Titania under Irradation of White Light, J. Chem. Engineering of Japan, 37(5): 630-635, (2004).
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