MgAPO-5可见光光催化剂的制备及其性能研究Study on Preparation and Characterization of MgAPO-5 Visible Light Photocatalyst
翁秀兰;颜桂炀;张晓勤;
摘要(Abstract):
以拟薄水铝石、正磷酸、硫酸镁为原料,采用水热法合成了MgAPO-5分子筛.以可见光光催化降解亚甲基蓝作为模型反应,详细考察了合成条件(晶化时间、模板剂种类、晶化胶体酸度)和光催化反应条件(催化剂用量、反应液初始pH值)等因素对合成产物的理化性能及光催化性能的影响.结果表明,MgAPO-5分子筛的最佳合成条件为:以三乙胺为模板剂,晶化时间为20 h,晶化胶体的pH值为6.0;MgAPO-5分子筛降解亚甲基蓝的最佳反应条件为:催化剂用量1.25 g/L,反应液初始pH值以中性为宜.
关键词(KeyWords): MgAPO-5;光催化剂;制备;光催化性能;可见光
基金项目(Foundation): 福建省教育厅基金资助项目(JB042372006F5030)
作者(Authors): 翁秀兰;颜桂炀;张晓勤;
参考文献(References):
- [1]Wilson S T,Lok B M,Messina C A.Aluminophosphate molecular sieves:a new class of microporous crystallineinorganic solids[J].J Am Chem Soc,1982,104(4):1146-1147.
- [2]Lok B M,Messina C A.Silicoaluminophosphate molecular sieves:another new class of microporous crystallineinorganic solids[J].J Am Chem Soc,1984,106(20):6092-6093.
- [3]Yang S M,Wu Y M.One step synthesis of meghyl isobutyl ketone over palladium supported on AlPO4-11 andSAPO-11[J].Applied Catalysis A:General,2000,192(2):211-220.
- [4]Ulagappan N,Frei H.Redox chemistry of gaseous reactants inside photoexcited FeAlPO4molecular sieve[J].JPhys Chem A,2000,104(3):490-496.
- [5]Chang J S,Hwang J S,Jhung S H,et al.Nanoporous metal-containing nickel phosphates:a class of shape-selectivecatalyst[J].Angew Chem Int Ed,2004,43(21):2819-2822.
- [6]翁秀兰,颜桂炀,刘汉甫.金属掺杂磷铝分子筛的制备及其光催化性能研究[J].分子催化,2005,19(6):477-480.
- [7]刘长军,刘颖颖,唐盛伟,等.CoAPO-5分子筛的水热合成研究[J].工业催化,2005,13(3):35-39.
- [8]Ihlein G.Synthesis of millimeter sized perfect AlPO4-5 crystals[J].Microporous and Mesoporous Materials,2000,35/36(1-3):617-620.
- [9]中国科学院大连化学物理研究所分子筛组.沸石分子筛[M].北京:科学出版社,1978.
- [10]Piscopo A,Robert D,Weber J V.Influence of pH and chloride anion on the photocatalytic degradation of organiccompounds:part I.Effect on the benzamide and para-hydroxybenzoic acid in TiO2aqueous solution[J].AppliedCatalysis B:Environmental,2001,35(2):117-124.
- [11]Sun Z,Chen Y,Ke Q,et al.Photocalytic degradation of cationic azo dye by TiO2/bentonite nanocomposite[J].J Photochem Photobiol A:Chem,2002,149(1-3):169-174.