以金属硝酸盐、硝酸镍、硝酸铁、硝酸锌为原料,柠檬酸和葡萄糖作为分散剂和燃烧剂,通过溶胶-凝胶自蔓燃法在200℃下制备了纳米Nio.Zno.5Fe2O4光催化剂.通过XRD、TEM、VSM分析表明,所制样品为纯相尖晶石型镍锌铁氧体,颗粒大小约为18nm,饱和磁强度Ms为31.14A· m2/kg,剩余磁强度Ms为2.08A·m2/kg,矫顽力Hc为4949A/m,表现为铁磁性.样品的光催化性能实验表明,在Ni-Zn铁氧体+H2O2+可见光系统中,亚甲基蓝的降解率在2h内达到98％.反应后的样品通过磁力回收,用去离子水和无水乙醇清洗,60℃烘干后,进行3次重复实验,样品的降解率没有降低,表明样品性能稳定,是一种可回收的光催化剂.
参考文献
| [1] | Bouyakoub A Z;Lartiges B S;Ouhib R et al.MnCl2 and MgCl2 for the removal of reactive dye levafix brilliant blue EBRA from synthetic textile wastewaters:an absorption/aggregation mechanism[J].Journal of Hazardous Materials,2011,187(1-3):264-273. |
| [2] | Hai F I;Yamamoto K;Nakajima F et al.Bioaugmented membrane bioreactor(MBR)with a GAC-packed zone for high rate textile wastewater treatment[J].Water Research,2011,45(06):2199-2206. |
| [3] | M.G. Coelho;G.M. de Lima;R. Augusti .New materials for photocatalytic degradation of Indigo Carmine—Synthesis, characterization and catalytic experiments of nanometric tin dioxide-based composites[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2010(1/2):67-71. |
| [4] | Huang C H;Chang K P;Ou H D et al.Characterization and application of Ti-containing mesoporous and silica for dye removal with synergistic effect of coupled adsorption and photocatalytic oxidation[J].Journal of Hazardous Materials,2011,186(2 3):11741182. |
| [5] | Karthik Shankar;James I. Basham;Nageh K. Allam .Recent Advances in the Use of TiO2 Nanotube and Nanowire Arrays for Oxidative Photoelectrochemistry[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2009(16):6327-6359. |
| [6] | JUNGWON KIM;CHUL WEE LEE;WONYONG CHOI .Platinized WO3 as an Environmental Photocatalyst that Generates OH Radicals under Visible light[J].Environmental Science & Technology: ES&T,2010(17):6849-6854. |
| [7] | Wei Liu;Mingsongji;Shifu Chen .Preparation, characterization and activity evaluation of Ag_2Mo_4O_(13) photocatalyst[J].Journal of hazardous materials,2011(2/3):2001-2008. |
| [8] | Gonu Kim;Wonyong Choi .Charge-transfer surface complex of EDTA-TiO2 and its effect on photocatalysis under visible light[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2010(1/2):77-83. |
| [9] | Laokul, P.;Amornkitbamrung, V.;Seraphin, S.;Maensiri, S. .Characterization and magnetic properties of nanocrystalline CuFe _2O_4, NiFe_2O_4, ZnFe_2O _4 powders prepared by the Aloe vera extract solution[J].Current applied physics: the official journal of the Korean Physical Society,2011(1):101-108. |
| [10] | Blanco-Gutierrez V;Torralvo-Fernandez M J;Saez-Puche R .Magnetic behavior of ZnFe2O4 nanoparticles:effects of solid matrix and the particle size[J].Phy Chem C,2010,114(04):1789-1795. |
| [11] | 丁萍,潘新花,叶志镇.Sb掺杂ZnO薄膜电学、光学性能研究[J].重庆理工大学学报（自然科学版）,2010(05):50-53. |
| [12] | Yongbo Li;Ran Yi;Aiguo Yan .Facile synthesis and properties of ZnFe_2O_4 and ZnFe_2O_4/polypyrrole core-shell nanoparticles[J].Solid state sciences,2009(8):1319-1324. |
| [13] | Sivakumar M;Takami T;Ikuta H;Towata A;Yasui K;Tuziuti T;Kozuka T;Bhattacharya D;Iida Y .Fabrication of zinc ferrite nanocrystals by sonochemical emulsification and evaporation: Observation of magnetization and its relaxation at low temperature[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2006(31):15234-15243. |
| [14] | 谢太平,徐龙君,刘成伦,王媛,谢昭明,肖中明.锶磁性光催化剂的制备和表征[J].功能材料,2012(15):2116-2120. |
| [15] | Visible light induced hydrogen evolution on new hetero-system ZnFe_2O_4/SrTiO_3[J].Applied energy,2010(7):P.2230. |
| [16] | Hu, P.;Pan, D.-A.;Wang, X.-F.;Tian, J.-J.;Wang, J.;Zhang, S.-G.;Volinsky, A.A. .Fuel additives and heat treatment effects on nanocrystalline zinc ferrite phase composition[J].Journal of Magnetism and Magnetic Materials,2011(5):569-573. |
| [17] | Cai-Hong Chen;Yan-Hui Liang;Wei-De Zhang .ZnFe_2O_4/MWCNTs composite with enhanced photocatalytic activity under visible-light irradiation[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(1):168-172. |
| [18] | Xu S;Shangguan W;Yuan J et al.Preparations,photocatalytic properties of magnetically separable nitrogendoped TiO2 supported on nickl ferrite[J].Applied Catalysis,2007,71(3-4):177-184. |
| [19] | N. Kislov;S.S. Srinivasan;Yu. Emirov .Optical absorption red and blue shifts in ZnFe_2O_4 nanoparticles[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2008(1/3):70-77. |
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%