稀土掺杂对电极的导电性、分解温度、析氧电位和电催化活性有较大影响.以SnCl4·5H2O,Sb2O3和La(NO3) 3·6H2O为前驱体,采用溶胶-凝胶法制备了La掺杂SnSb复合涂层Ti基电极.借助SEM,XRD和EDX等检测手段对所制备电极的表面形貌、晶体结构及元素组成进行表征和分析,考察了制备电极的析氧电位及模拟苯酚废水降解效果,优化出的最优掺杂量为Sn:Sb:La=100.0:10.0:2.5(摩尔比),最佳热处理温度为550℃;用该电极处理模拟苯酚废水150 min,COD去除率达到94.8%.结果表明:适量的La掺杂可提高SnO2晶粒的形核与长大速率之比,使SnSb复合电极表面晶粒细化,比表面积增大,有利于电极催化性能的改善,可为研制出适合于苯酚处理的高效阳极材料提供参考.
参考文献
| [1] | 范洪富,王磊,关杰,张翼.稀土掺杂PbO2电极的制备及催化性能研究[J].中国稀土学报,2007(03):299-304. |
| [2] | Yao PD;Chen XM;Wu H;Wang DH .Active Ti/SnO2 anodes for pollutants oxidation prepared using chemical vapor deposition[J].Surface & Coatings Technology,2008(16):3850-3855. |
| [3] | Cui Y H;Feng Y J;Liu Z Q .Influence of rare earths doping on the structure and electro-catalytic performance of Ti/Sb-SnO2 electrodes[J].Electrechimica Acts,2009,54(21):4903-4909. |
| [4] | Ya-qiong Wang;Bin Gu;Wen-lin Xu .Electro-catalytic Degradation Of Phenol On Several Metal-oxide Anodes[J].Journal of hazardous materials,2009(2/3):1159-1164. |
| [5] | KONG Jiang-tao,SHI Shao-yuan,ZHU Xiu-ping,Ni Jin-ren.Effect of Sb dopant amount on the structure and electrocatalytic capability of Ti/Sb-SnO2 electrodes in the oxidation of 4-chlorophenol[J].环境科学学报（英文版）,2007(11):1380-1386. |
| [6] | 孙智权,陆海彦,任秀彬,黄卫民,董艳杰,林海波.刷涂热分解法制备Ti/SnO2-Sb2O5阳极及其性能[J].物理化学学报,2009(07):1385-1390. |
| [7] | Hai-yang Ding;Yu-jie Feng;Jun-feng Liu .Preparation and properties of Ti/SnO_2-Sb_2O_5 electrodes by electrodeposition[J].Materials Letters,2007(27):4920-4923. |
| [8] | Stengl V;Bakardjieva S;Murafa N .Preparation and photecatalyticactivity of rare earth doped TiO2 nanoparticles[J].Materials Chemistry and Physics,2009,114(01):217-226. |
| [9] | 涂宝峰,程谟杰,董永来.稀土改性固体氧化物燃料电池阳极催化材料的制备和表征[J].中国稀土学报,2008(03):298-301. |
| [10] | Neto A O;Andre Y W;Michele B et al.Preparation and characterization of Pt-Rare Earth/Ce electrocatalysts using an alcohol reduction process for methanol electro-oxidation[J].Journal of Alloys and Compounds,2009,146(1,2):288-291. |
| [11] | 杨耀辉,彭乔.铈掺杂对Ti/Sn-Sb阳极性能的影响研究[J].稀有金属,2009(03):356-360. |
| [12] | Han G C;Liu L;Wang Y L .Prepartion and application of pharmaceutical wastewater treatment by praseodymium doped SnO2/Ti electrocatalytic electrode[J].Journal of Rare Earths,2008,26(04):532-537. |
| [13] | 李善评,曹翰林,胡振.稀土La掺杂Ti/Sb-SnO2电极的制备及性能研究[J].无机化学学报,2008(03):369-374. |
| [14] | Feng YJ;Cui YH;Logan B;Liu ZQ .Performance of Gd-doped Ti-based Sb-SnO2 anodes for electrochemical destruction of phenol[J].Chemosphere: Environmental toxicology and risk assessment,2008(9):1629-1636. |
| [15] | 冯玉杰,丁海洋,张文军.CV和Tafel曲线对稀土掺杂Ti/SnO2-Sb电极电催化性能研究[J].材料科学与工艺,2009(02):278-280,284. |
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%