Ti/SnO_2-Sb:Eu^(3+)电极制备及性能表征

Preparation and characterization of Ti/SnO_2-Sb:Eu^(3+) Electrodes

以SnCl_4·5H_2O、Sb_2O_3和Eu_2O_3为原料,以钛片为基体,采用涂层热解法制备了Eu^(3+)掺杂Ti/SnO_2-Sb电极。研究了电极的电化学性能,对所制备的电极作LSV和Tafel曲线,以对硝基苯酚为目标降解有机物,考察了电极的电催化活性。分析Eu^(3+)掺杂量对电极性能的影响,采用X-射线衍射(XRD)、扫描电镜(SEM)和能谱仪(EDS)等检测方法对Eu^(3+)掺杂Ti/SnO_2-Sb电极表面涂层的晶体结构、形貌和元素组成进行了研究;,发现掺杂量为1%的电极的性能最佳,此条件下得到的电极有高的析氧电位和电催化活性,以及较好的电极涂层结构和覆盖度。

The Ti/SnO2-Sb electrodes were prepared by the thermal decomposition method under the condition of certain Eu3＋ doping amount, using SnCl4·5H2O, SbCl3 and Eu2O3 as raw materials and the titaniun as basal body. The electrochemical performance of the prepared electrodes was evaluated by linear sweep vohammetry （LSV） and Tafel curves. The degradation ability of the electrodes was investigated using p-nitrophenol as a target organic. The micrograph, the element composition and the structure of the electrodes＇ surface coating were analyzed by SEM, EDS and XRD. The effect of Eu3~ doping amount on electrodes performance was analyzed.The results show that the optimal Eu3~ doping amount 1% were determined. The electrode prepared by this condition has higher oxygen evolution potential and electrocatalysis ability, better coverage and stnmtur~ ~f th~ t^l~trnrl~