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Crystalline TiO2 supported on stainless steel mesh deposited in a one step process via pulsed DC magnetron sputtering for wastewater treatment applications

机译：在一个步骤过程中支持在不锈钢网上的结晶TiO2通过脉冲DC磁控溅射，用于废水处理应用

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TiO2 thin films were deposited on woven stainless-steel mesh by pulsed DC magnetron sputtering, at room temperature without substrate bias or annealing. Woven stainless-steel mesh is inexpensive, flexible, semi-transparent and has a high surface area. This coating/substrate combination was selected for future photocatalytic reactor integration. The effect of operating pressure and magnetron power on coating crystallinity and photocatalytic activity were investigated. Results indicate that magnetron power is a key factor, as it affects the crystallinity and morphology of the thin films. A combination of low pressure and high-power lead to a one-step synthesis of TiO2 coatings with a mixed anatase and rutile phase. An optimised sample was produced and tested for methylene blue, methyl orange and rhodamine B decomposition under UV-A. Using various trapping agents, •OH and O2-• radicals were identified as the main photogenerated species responsible for the model pollutant degradation. Finally, durability tests revealed little to no photocatalytic performance deterioration after ten repeated cycles. This confirmed the suitability of this coating/substrate combination for future photocatalytic reactor integration.https://doi.org/10.1016/j.cviu.2017.00.000
机译：通过脉冲DC磁控溅射在室温下沉积在编织不锈钢网上的TiO 2薄膜，在没有衬底偏置或退火的室温下。编织不锈钢网是便宜，柔韧，半透明的，具有高表面积。选择该涂层/底物组合用于将来的光催化反应器集成。研究了对涂层结晶度和光催化活性对涂层结晶度和光催化活性的影响。结果表明，磁控激素功率是关键因素，因为它影响了薄膜的结晶度和形态。低压和高功率的组合导致TiO2涂层的一步合成，具有混合锐钛矿和金红石相。在UV-A下制备并测试优化的样品并测试亚甲基蓝，甲基橙和罗达胺B分解。使用各种捕获剂，•OH和O2-•被鉴定为负责模型污染物降解的主要光生物种。最后，耐久性试验略微没有在十个重复循环后的光催化性能恶化。这证实了这种涂层/底物组合对未来光催化反应器集成的适用性.https：//doi.org/10.1016/j.cviu.2017.00.000

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