以钛酸正丁酯为前躯体,硝酸铵和九水硝酸铁为氮、铁掺杂源,利用水热法制备了氮、铁共掺杂TiO2粉体.采用XRD、FE-SEM、EDS、BET、FT-IR等手段对所制备粉体进行了表征.结果显示:共掺杂TiO2粉体为锐钛矿型,呈球状,粒径为9.2nm,较高的比表面积201 m2/g.对甲基橙溶液的光降解实验结果表明,在350W氙灯(模拟自然光)条件下,共掺杂的TiO2对于甲基橙的降解率为96.4％,光催化活性高于P25.在太阳光下,光照4h,对甲基橙的降解率达到84.5％.
参考文献
| [1] | Honda K;Fujishima A .Electrochemical photocatalysis of water at a semiconductor dectrode[J].Nature,1972,238:37-38. |
| [2] | Michael R. Hoffmann;Scot T. Martin;Wonyong Choi;Detlef W. Bahnemann .Environmental Applications of Semiconductor Photocatalysis[J].Chemical Reviews,1995(1):69-96. |
| [3] | Asahi R;Morikawa T;Ohwaki T et al.Visible light photocatalysis in nitrogen doped titanium oxides[J].Science,2001,293:269-271. |
| [4] | Liu G;Zhao Y;Sun C et al.Synergistic effects of B/N doping on the visible-light photocatalytic activity of mesoporous TiO2[J].Angewandte Chemie International Edition,2008,47(24):4516-4520. |
| [5] | Kim J;Lee J;Choi W .Synergic effect of simultaneous fluorination and platinization of TiO2 surface on anoxic photocatalytic degradation of organic compounds[J].Chemical communications,2008(6):756-758. |
| [6] | Ohno, T;Tsubota, T;Toyofuku, M;Inaba, R .Photocatalytic activity of a TiO2 photocatalyst doped with C4+ and S4+ ions having a rutile phase under visible light[J].Catalysis Letters,2004(4):255-258. |
| [7] | T. Umebayashi;T. Yamaki;H. Itoh;K. Asai .Band gap narrowing of titanium dioxide by sulfur doping[J].Applied physics letters,2002(3):454-456. |
| [8] | Shanmugasundaram Sakthivel;Horst Kisch .Daylight Photocatalysis by Carbon-Modified Titanium Dioxide[J].Angewandte Chemie,2003(40):4908-4911. |
| [9] | Choi W;Termin A;Hoffmann M R .The role of metal-ion dopants in quantum-sized TiO2:correlation between photoreactivity and charge-carrier recombination dynamics[J].Physical Chemistry,1994,98(51):13669-13679. |
| [10] | 闫鹏飞,王建强,江欣,周德瑞,傅宏刚.掺铁TiO2纳米晶的制备及光催化性能研究[J].材料科学与工艺,2002(01):28-31. |
| [11] | 华南平,吴遵义,杜玉扣,邹志刚,杨平.Pt、N共掺杂TiO2在可见光下对三氯乙酸的催化降解作用[J].物理化学学报,2005(10):1081-1085. |
| [12] | Gole J L;Stout J D;Burda C et al.Highly efficient formation of visible light tunable TiO2-x Nx photocatalysts and their transformation at the nanoscale[J].Journal of Physical Chemistry B,2004,108(04):1230-1240. |
| [13] | 顾凌燕,王玉萍,彭盘英,王连军.S与金属共掺杂TiO2催化剂的制备及其光催化性能[J].中国有色金属学报,2009(05):910-918. |
| [14] | Jiang H;Song H;Zhou Z;Liu X;Meng G .The roles of Li+ and F- ions in Li-F-codoped TiO2 system[J].The journal of physics and chemistry of solids,2007(10):1830-1835. |
| [15] | Ling QC;Sun JZ;Zhou QY .Preparation and characterization of visible-light-driven titania photocatalyst co-doped with boron and nitrogen[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2008(10):3236-3241. |
| [16] | 陈建军,李俊华,柯锐,康守方,郝吉明.钒和钨负载量对V2O5-WO3/TiO2表面形态及催化性能的影响[J].环境科学,2007(09):1949-1953. |
| [17] | X.Z.Li;F.B.Li;C.L.Yang;W.K.Ge .Photocatalytic activity of WO_x-TiO_2 under visible light irradiation[J].Journal of Photochemistry and Photobiology, A. Chemistry,2001(2/3):209-217. |
| [18] | Catastini C.;Sarakha M.;Mailhot G.;Bolte M. .Iron (III) aquacomplexes as effective photocatalysts for the degradation of pesticides in homogeneous aqueous solutions[J].Science of the Total Environment,2002(1/3):219-228. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%