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利用热分解方法在多孔钛上制备了Sb掺杂纳米SnO2电极。也研究了该电极降解甲基橙的电化学性能。SEM和XRD测试表明,在多孔钛基体上可获得完整的、无裂缝的涂层。无裂缝的涂层表面由粒径范围在80~230 nm的Sb掺杂SnO2纳米颗粒组成。HRTEM测试结果表明,SnO2纳米颗粒由5~6 nm细小颗粒构成。在其余条件相同的情况下,强化寿命试验表明,Sb掺杂纳米SnO2/多孔Ti电极的寿命远大于致密钛基体上的电极。Sb掺杂纳米SnO2/多孔Ti电极可将浓度为100 mg/L的甲基橙溶液降解到8 mg/L,显示出该电极具有很强的有机物污染物电催化降解能力。并指出采用简单的表面处理技术,将使多孔钛具有很高的潜力被应用到有机污水降解领域。
Sb-doped nano-SnO2 electrodes were prepared on porous titanium by thermal decomposition. The electrochemical performance of this electrode to degrade methyl orange was also studied. SEM and XRD tests showed that a complete, crack-free coating was obtained on porous titanium substrates. The crack-free coating surface consists of Sb-doped SnO2 nanoparticles with particle sizes in the range of 80 to 230 nm. HRTEM test results show that, SnO2 nanoparticles from 5 ~ 6 nm small particles. Under the same conditions, the life-span test shows that the lifetime of Sb-doped nano-SnO2 / porous Ti electrode is much longer than that of dense titanium substrate. Sb-doped nano-SnO2 / porous Ti electrode can degrade methyl orange solution with a concentration of 100 mg / L to 8 mg / L, which shows that the electrode has a strong ability of electrocatalytic degradation of organic pollutants. And pointed out that the use of simple surface treatment technology, porous titanium will have a high potential has been applied to the field of organic wastewater degradation.