Preparation and Catalytic Activity for Degradation of Acidic Fuchsine of TiO2 Photocatalyst
YANG Wu,GUO Hao,ZHANG Wen-hao,XUE Zai-lan,CHENG Li-yan,BO Li-li,GAO Jin-zhang
College of Chemistry and Chemical Engineering, Northwest Normal University, Key Lab of Eco-Environment Related Polymer Materials of MOE, Lanzhou 730070, China
Abstract:In the paper, undoped and Pr2O3 doped TiO2 nanoparticles were prepared by a sol-gel process using Ti(OC4H9)4 as raw material and characterized by means of XRD TG-DTA, AFM, UV-Vis and FTIR. The photocatalytic activity of Pr2O3/ TiO2 was evaluated by the photocatalytic degradation of acidic fuchsine. The factors affecting on photocatalytic activity of Pr2O3/ TiO2, such as the content of doped Pr2O3, the calcined temperature and added amount of the catalyst etc. were discussed. It was shown that Pr doping hampers the transformation of TiO2 crystal phase from anatase to rutile, and with Pr2O3 doping the particle diameter of Pr2O3/ TiO2 samples decreased, the specific surface area increased and the photocatalytic activity improved. When doping amount of Pr is 0.8%, added amount of the catalyst is 0.03 g and the calcination temperature is 500 ℃, the degradation efficiency of acidic fuchsine reaches 97%. The photocatalytic degradation of acidic fuchsine by Pr2O3/ TiO2 is a quasi-first order dynamic reaction.
[1] HU Yan, XU Jin-jing, YUAN Chun-wei, et al(胡 艳,徐晶晶,袁春伟,等). Chin. Sci. Bull.(科学通报),2005, 50: 2169. [2] SHENG Wei-ren, ZHAO Wen-kuan, HE Fei, et al(沈伟韧, 赵文宽, 贺 飞, 等). Progress Chemistry(化学进展), 1998, 10: 349. [3] ZHENG Huai-li, YIN Xi, TANG Ming-fang, et al(郑怀礼, 伊 茜, 唐鸣放, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2006,26(11): 2057. [4] ZHAO Jin-wei, YUAN Min, LIU Xiao-heng(赵金伟, 袁 敏, 刘孝恒). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(10): 1677. [5] Hiromi Y, Yuichi I, Masakazu A. J. Phys. Chem., 1996, 100: 16041. [6] Cai R, Kubota Y, Shuin T, et al. Cancer Res., 1992, 52: 2346. [7] Cai R, Hashimoto K, Itoh K, et al. Bulletin of the Chemical Society of Japan, 1991, 64: 1268. [8] Wang R, Hashimoto K, Fujishima A, et al. Nature, 1997, 388: 431. [9] XU Shun, YANG Peng-fei, DU Bao-shi, et al(徐 顺, 杨鹏飞, 杜宝石, 等). Chem. Res. Appl.(化学研究与应用), 2003, 21: 146. [10] Choi W, Termin A, Hoffmann M R. J. Phys. Chem., 1994, 98: 13669. [11] FENG Liang-rong, L Shao-jie, QIU Fa-li(冯良荣,吕绍洁,邱发礼). Acta Chimica Sinica(化学学报), 2002, 60: 463. [12] Jing L Q, Sun X J, Xin B F, et al. J. Solid State Chem., 2004, 177: 3375. [13] HUANG Cui-ying, YOU Wan-sheng, DANG Li-qin, et al(黄翠英,由万胜, 党利琴, 等). Chin. J. Calalysis(催化学报), 2006, 27: 203. [14] Li F B, Li X Z, Hou M F, et al. Appl. Calalysis, A Gen., 2005, 285: 181. [15] YANG Qiu-jing, XU Zi-li, XIE Chao, et al(杨秋景, 徐自力, 谢 超, 等). Chemical Journal of Chinese University(高等学校化学学报), 2004, 25: 1711. [16] Ranjit K T,Willner I,Bossmann S H,et al. Environ. Siccnce and Technology, 2001, 35: 1544. [17] JIANG Hong-ji, LI Yan-feng, YE Zheng-fang, et al(姜鸿基, 李彦锋, 叶正芳, 等). Functional Materials(功能材料), 2002, 33: 360.