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首页> 外文期刊>International Journal of Electrochemical Science >Comparison of Photocatalytic Activity and Cyclic Voltammetry of Zinc Oxide and Titanium Dioxide Nanoparticles toward Degradation of Methylene Blue
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Comparison of Photocatalytic Activity and Cyclic Voltammetry of Zinc Oxide and Titanium Dioxide Nanoparticles toward Degradation of Methylene Blue

机译：氧化锌和二氧化钛纳米粒子对亚甲基蓝降解的光催化活性和循环伏安法的比较

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We report on the photocatalytic degradation of methylene blue (MB) solution using commercial ZnOand TiO2 (P25) photocatalysts, in the form of slurry and immobilized on glass slides, under ultraviolet(UV) and solar irradiations. The average particle sizes of ZnO and P25 were 100 nm and 30 nm,respectively. Under both the irradiations, the photocatalytic activities of ZnO and P25 slurry resulted inbetter photocatalytic performance than the immobilized photocatalysts. Interestingly, ZnO showedbetter degradation capability in comparison to P25 under the solar irradiation. This result revealed thatsolar light provided a good source of energy to degrade MB in the presence of ZnO. The cyclicvoltammetry analysis suggested that the photocatalysts possessed different mechanisms for thedegradation of MB. The potential of immobilizing photocatalysts without compromising theirperformance may lead to easy handling of these materials, resulting in expanding their applications, forexample, as a photoanode for photoelectrochemistry.
机译：我们报告了使用商业的ZnO和TiO2（P25）光催化剂，以浆料的形式并固定在载玻片上，在紫外线（UV）和太阳辐射下，对亚甲基蓝（MB）溶液的光催化降解。 ZnO和P25的平均粒径分别为100nm和30nm。在两种辐照下，ZnO和P25浆料的光催化活性均比固定化的光催化剂更好。有趣的是，在阳光照射下，ZnO的降解能力优于P25。该结果表明，在ZnO存在下，太阳光为降解MB提供了良好的能源。循环伏安法分析表明，光催化剂具有不同的MB降解机理。在不损害其性能的情况下固定化光催化剂的潜力可能会导致这些材料易于处理，从而扩大其应用范围，例如用作光电化学的光阳极。

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