Department of Chemistry, Via Giuria 7, 10125 Torino, Italy.
Department of Chemistry, Laboratory of Analytical Chemistry, Ioannnina 45 110, Greece.
J Hazard Mater. 2017 Feb 5;323(Pt A):471-477. doi: 10.1016/j.jhazmat.2016.03.093. Epub 2016 Apr 2.
In the present study, we investigated the possibility to abate Acesulfame K, a persistent emerging contaminant, in aqueous media using zinc oxide based materials. For this purpose, bare and Ce-doped zinc oxide was prepared via an easy and cheap hydrothermal process using different cerium salts as precursors. Their photocatalytic performance was evaluated in different media, namely ultrapure and river water under both UV-vis and visible light. Commercial TiO P25 was also employed and used as a reference photocatalyst for comparison purposes. The obtained results pointed out that cerium doped zinc oxide composites exhibit higher performance than TiO P25, especially under visible light and in the presence of organic matter, when the activity of the latter is greatly depressed. In particular, ZnO doped with cerium (1%) was the most effective material, and could be a promising alternative to TiO P25, especially in the treatment of natural waters.
在本研究中，我们研究了使用基于氧化锌的材料在水介质中消除阿斯巴甜（一种持久性新兴污染物）的可能性。为此，通过使用不同的铈盐作为前体制备了裸锌和铈掺杂氧化锌，采用简单且廉价的水热法。评估了它们在不同介质中的光催化性能，即在紫外光和可见光下的超纯水和河水。还使用了商业 TiO P25，并将其用作比较目的的参考光催化剂。所得结果表明，与 TiO P25 相比，铈掺杂氧化锌复合材料具有更高的性能，特别是在可见光下和存在有机物时，后者的活性大大降低。特别是，掺杂 1% 铈的 ZnO 是最有效的材料，它可能是 TiO P25 的一种有前途的替代品，特别是在处理天然水时。
