以电解钛丝为前驱物,用过氧化氢溶解-改性水热晶化法制备了锐钛型氟掺杂二氧化钛溶胶.应用XRD、TEM、PSD、UV-vis-DRS,FTIR、XPS技术对溶胶粒子的大小、形貌、晶型、氟的存在形式进行了表征;研究了氟的掺杂量及溶液的pH值对溶胶光催化降解4-氯苯酚性能的影响.结果表明,130℃水热反应15h后生成的TiO2溶胶为纯锐钛型结构,平均粒径为11.0nm;氟分别以吸附态、结合态的形式存在于TiO2粒子的表面和晶格中;氟掺杂后溶胶粒子对4-氯苯酚的吸附能力增大并有利于4-氯苯酚深度矿化.
参考文献
[1] | Lee J H;Kang M;Chong S J et al.[J].Water Research,2004,38:713-719. |
[2] | 黄冬根,廖世军,党志,杨杰,郭伟.催化荧光灯的制备及其降解甲醛的能力[J].华南理工大学学报(自然科学版),2006(10):35-39,49. |
[3] | 熊国兴;张玉红;姚楠 等.[P].CN 1323743A,2001. |
[4] | Choi J H;Choi U S;Han Y S et al.[P].US 6576589,2001. |
[5] | Xie Y B;Yuan C W .[J].Rear Metals,2004,23(01):20-26. |
[6] | Kim H Y;Min J H;Yang J S .[P].KR 2001096626-A,2002. |
[7] | 黄冬根,廖世军,党志.氟掺杂锐钛矿型TiO2溶胶的制备、表征及催化性能[J].化学学报,2006(17):1805-1811. |
[8] | Benesi H A .[J].Journal of Physical Chemistry,1957,57:970-973. |
[9] | Huang DG;Liao SJ;Quan SQ;Liu L;He ZJ;Wan JB;Zhou WB .Preparation of anatase F doped TiO2 sol and its performance for photodegradation of formaldehyde[J].Journal of Materials Science,2007(19):8193-8202. |
[10] | Tsukma K;Akiyama T;Yamada N .[J].Journal of Non-Crystalline Solids,1998,231:161-168. |
[11] | Di Li;Hajime Haneda;Shunichi Hishita;Naoki Ohashi;Nitin K.Labhsetwar .Fluorine-doped TiO_2 powders prepared by spray pyrolysis and their improved photocatalytic activity for decomposition of gas-phase acetaldehyde[J].Journal of Fluorine Chemistry,2005(1):69-77. |
[12] | Minero C.;Maurino V.;Vione D.;Pelizzetti E.;Mariella G. .Photocatalytic transformation of organic compounds in the presence of inorganic ions. 2. Competitive reactions of phenol and alcohols an a titanium dioxide-fluoride system[J].Langmuir: The ACS Journal of Surfaces and Colloids,2000(23):8964-8972. |
[13] | Karmakar S.;Greene HL. .AN INVESTIGATION OF CFC12 (CCL2F2) DECOMPOSITION ON TIO2 CATALYST[J].Journal of Catalysis,1995(2):394-406. |
[14] | Yu JC.;Yu JU.;Ho WK.;Jiang ZT.;Zhang LH. .Effects of F- doping on the photocatalytic activity and microstructures of nanocrystalline TiO2 powders[J].Chemistry of Materials,2002(9):3808-3816. |
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