摻雜金屬離子之二氧化鈦奈米顆粒及二氧化鈦/二氧化錫 奈米複合材料的合成與鑑定

Preparation and Characterization of Metal-Doped TiO2 Nanoparticles and TiO2-SnO2 Nanocomposites

廖怡婷(Yi-Ting Liao)

指導教授 ： 楊家銘

國立清華大學/理學院/化學系/碩士(2009年)

https://doi.org/10.6843/NTHU.2009.00303

摘要

The first part of this thesis is the preparation and characterization of the metal-doped TiO2 nanoparticles. The preparation method was based on a nonaqueous sol-gel route using benzyl alcohol as solvent and titanium tetrachloride together with other metallic compound as metal precursors. The obtained metal-doped TiO2 materials were characterized by ICP-AES, XRD, TGA-DSC, UV-Vis, XPS and TEM. The results indicated that these materials were in the nanometer scale and were with highly crystalline and pure anatase phase. The tin-doped TiO2 and cobalt-doped TiO2 nanoparticles both showed higher photocatalytic activity as compared to undoped TiO2 nanoparticles. The second part of this thesis is the preparation and characterization of the TiO2/SnO2 nanocomposites. The nanocomposites were synthesized by a seed-mediated growth approach, using SnO2 nanocrystals as seeds and a mixture of TiCl4 and benzyl alcohol as a growth solution. The XRD and TEM characterizations indicated that the TiO2/SnO2 nanocomposites exhibited a flower-like morphology with uniform size, and the two metal oxides were with rutile and cassiterite phases, respectively.

關鍵字

光觸媒 ； 摻雜 ； 二氧化碳 ； 奈米顆粒

並列摘要

無資料

並列關鍵字

photocatalysis ； doping ； TiO2 ； nanoparticle

參考文獻

2. Bak, T., et al., International Journal of Hydrogen Energy, 2002. 27(10): p. 991-1022.

5. Rajeshwar, K., Journal of Applied Electrochemistry, 2007. 37(7): p. 765-787.

8. Herrmann, J.M., Catalysis Today, 1999. 53(1): p. 115-129.

18. Kitano, M., et al., Applied Catalysis A-General, 2007. 325(1): p. 1-14.

31. Mehrotra, R.C. and A. Singh, Chemical Society Reviews, 1996. 25(1): p. 1-13.