采用微乳液介导水热法制备Bi2WO6和Fe/Bi2WO6光催化剂,并研究水热反应温度、前驱体pH值、水相与表面活性剂的摩尔比ω值和Fe3+掺杂量对光催化剂结构、形貌和光催化活性等方面的影响.结果表明:合成的Bi2WO6为15～25 nm的纳米球状结构;当前驱体pH=1、水热温度为150℃下合成的Bi2WO6催化剂对亚甲基蓝(MB)的降解率达到93.8％;当ω=27时合成的Bi2WO6对MB光催化降解率达到了97.8％.研究发现当掺入1.03％的Fe3+的Bi2WO6比纯Bi2WO6对MB的降解率提高了2倍,达到90.2％.
参考文献
| [1] | Woan K,Pyrgiotakis G,Sigmund W.Photocatalytic carbon-nanotube-TiO2 composites.Adv.Mater.,2009,21(21):2233-2239. |
| [2] | Irie H,Watanabe Y,Hashimoto K.Nitrogen-concentration dependence on photocatalytic activity of TiO2-xNx powdcrs.J.Phys.Chem.B,2003,107(23):5483-5486. |
| [3] | Shao G S,Zhang X J,Yuan Z Y.Preparation and photocatalytic activity of hierarchically mesoporous-macroporous TiO2-xNx.Appl.Catal.B:Environ.,2008,82(3/4):208-218. |
| [4] | Zhang Q W,Wang J,Yin S,et al.Synthesis of a visible-light active TiO2-xSx photocatalyst by means of mechanochemical doping.J.Am.Chem.Soc.,2004,87(6):1161-1163. |
| [5] | Es-Souni M,Es-Souni M,Habouti S,et al.Brookite formation in TiO2-Ag nanocomposites andvisible-light-induced templated growth of Ag nanostructures in TiO2.Adv.Funct.Mater.,2010,20(3):377-385. |
| [6] | LIU Hong-Lv,ZHANG Ai-Qian,WU Hai-Suo,et al.Solar photocatalytic degradation of p-nitrophenol assisted by cuprous oxide.Environmental Chemistry,2004,23(5):490-494. |
| [7] | Jing D W,Guo L J.A novel method for the preparation of a highly stable and active CdS photocatalyst with a special surface nano-structure.J.Phys.Chem.B,2006,110(23):11139-11145. |
| [8] | ZHANG Yong-Lai,DING Hong,LIU Fu-Jian,et al.Synthesis of nanosized Ag3VO4 particles and their photocatalytic activity for degradation of rhodamine B under visible light.Chinese Journal of Catalysis,2008,29(8):783-787. |
| [9] | Zhang A P,Zhang J Z,Cui N Y,et al.Effects of pH on hydrothermal synthesis and characterization of visible-light-driven BiVO4 photo-catalyst.J.Mol.Catal.A:Chem.,2009,304(1/2):28-32. |
| [10] | Zhang Z J,Wang W Z,Yin W Z,et al.Inducing photocatalysis by visible light beyond the absorption edge:effect ofupconversion agent on the photocatalytic activity of Bi2WO6.Appl.Catal.B:Environ.,2010,101(1/2):68-73. |
| [11] | Tang J W,Zou Z G,Yin J,et al.Photocatalytic degradation of methylene blue on CaIn2O4 under visible light irradiation.Chem.Phys.Lett.,2003,382(1/2):175-179. |
| [12] | WANG Wen-Zhong,SHANG Meng,YIN Wen-Zong,et al.Recent progress on the bismuth containing complex oxide photocatalysts.Journal of Inorganic Materials,2012,27(1):11-18. |
| [13] | CHEN Hui,ZHU Kun.Photocatalytic oxidation degradation of acridine orange by TiO2 nanoparticles doped with metal ion.China Environmental Science,2000,20(6):561-564. |
| [14] | GE Lei,ZHANG Xian-Hua.Novel visible light driven Bi2WO6 photocatalysts synthesized via the microemulsion process and its photocatalytic performance.Journal of the Chinese Ceramic Society,2010,30(3):457-462. |
| [15] | LIU Ying,WANG Wei-Min,FU Zheng-Yi,et al.Hydrothermal synthesis and photocatalytic properties of Bi2WO6.Journal of Inorganic Materials,2011,26(11):1169-1174. |
| [16] | Zhou M H,Yu J G,Cheng B,et al.Preparation and photocatalytic activity of Fe-doped mesoporous titanium dioxide nano-crystalline photocatalysts.Materials Chemistry and Physics,2005,93(1):159-163. |
| [17] | Zhu J F,Zheng W,He B,et al.Characterization of Fe-TiO2 photocatalysts synthesized by hydrothermal method and their photocatalytic reactivity for photodegradation of XRG dye diluted in water.J.Mol.Catal.A:Chem.,2004,216(1):35-43. |
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%