ABSTRACT

This work deals with the unique TiO₂/Cu₂O nanocomposite was synthesised by a hydrothermal precipitation way and high photocatalytic degradation of target organic toxin over the photocatalytic coordination. The structure, morphology, composition, optical and photocatalytic belongings of the as-prepared nanomaterials (NMs) were analytically considered in aspect. In 80 min of exposure time, closely 94.5% decolourization proficiency and the removal rate of MB dye were attained by TiO₂/Cu₂O photocatalyst, which is abundantly greater than that of bare Cu₂O (61.5%) and TiO₂ (40%) photocatalysts (PCs) individually. The photodegradation kinetics of TiO₂/Cu₂O nanocomposite on MB dye was analytically discovered and the apparent rate kinetic was 5.1 folds grander related than pristine TiO₂. The TiO₂/Cu₂O photocatalyst also maintains worthy recycling steadiness up to four successive photodegradation cycles. Moreover, these novel TiO₂/Cu₂O nanocomposite owns great prospective for visible-light-driven organic impurities devastation from the wastewater.

摘要

这项工作涉及通过水热沉淀法和光催化配位对目标有机毒素的高光催化降解合成了独特的TiO ₂ /Cu ₂ O纳米复合材料。所制备的纳米材料（NMs）的结构、形貌、组成、光学和光催化属性在方面进行了分析。在 80 分钟的曝光时间内，TiO ₂ /Cu ₂ O 光催化剂的脱色率和 MB 染料的去除率接近 94.5% ，远高于裸 Cu ₂ O (61.5%) 和 TiO ₂ (40 %) 光催化剂 (PC)。TiO ₂ /Cu的光降解动力学分析发现 MB 染料上的₂ O 纳米复合材料，其表观速率动力学是原始 TiO _{2 的}5.1 倍。TiO ₂ /Cu ₂ O 光催化剂在四个连续的光降解循环中也保持了有价值的循环稳定性。此外，这些新型TiO ₂ /Cu ₂ O纳米复合材料在可见光驱动的废水中有机杂质破坏方面具有广阔的前景。