This work shows that metallic zinc can be used as a low-cost substrate or electrode for photocatalyst and electrocatalyst use by anodising in mild bicarbonate solution. Electrochemical anodising was used to produce ZnO nanowires by controlling operational conditions and dip-coating the anodised surface with TiO 2 to produce a core-shell coating with photocatalytic properties. The PbO 2, which is known as good electrocatalyst, was electrodeposited over the ZnO-TiO 2 core-shell structure to alter its surface for electrocatalytic degradation of dye. The electrochemical and photocatalytic behaviours of the coatings were analysed for the removal of RB-5 dye as model pollutant. For the ZnO-TiO 2 core-shell, the photocatalytic removal mechanism was driven by the heterojunction photocatalytic effect of photocatalytically active anatase TiO 2 and wurtzite ZnO. Photocatalysis was switched to electrocatalytic behaviour after incorporation o...

中文翻译：

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锌阳极氧化修饰PbO 2装饰的ZnO-TiO 2核壳纳米花结构，用于光和阳极降解活性Black-5染料

这项工作表明，金属锌可以通过在温和的碳酸氢盐溶液中进行阳极氧化而用作光催化剂和电催化剂的低成本基材或电极。通过控制操作条件并用TiO 2浸涂阳极氧化的表面以产生具有光催化性能的核壳涂层，将电化学阳极氧化用于生产ZnO纳米线。PbO 2被称为良好的电催化剂，被电沉积在ZnO-TiO 2核-壳结构上，以改变其表面以进行染料的电催化降解。分析了涂层的电化学和光催化行为，以去除作为模型污染物的RB-5染料。对于ZnO-TiO 2核壳，光催化活性的锐钛矿型TiO 2和纤锌矿型ZnO的异质结光催化作用驱动了光催化的去除机理。引入后，光催化转换为电催化行为。