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首页> 外文期刊>Journal of Hazardous Materials >Fabrication of Ce/N co-doped TiO2/diatomite granule catalyst and its improved visible-light-driven photoactivity
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Fabrication of Ce/N co-doped TiO2/diatomite granule catalyst and its improved visible-light-driven photoactivity

机译：Ce / N共掺杂TiO2 /硅藻土颗粒催化剂的制备及其改善的可见光驱动光活性

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Eliminating antibiotic remnants in aquatic environment has become one of the hottest topics among current research works. Thus, we prepared Ce, N co-doped TiO2/diatomite granule (CNTD-G) catalyst to provide a new method. As one typical antibiotics, oxytetracycline (OTC) was selected as the target Pollutant to be degradated under visible light irradiation. The carrier diatomite helped the spread of TiO2 nanoparticles onto its surface, and inhibited their agglomeration. The synergy of Ce and N dopants highly improved the visible-light-driven photoactivity of TiO2. The optimal doping amount and degradation conditions were determined. Besides, the effects of impurity ions were also investigated, including cations: Ca2+, Mg2+; or anions: NO3-, SO42- and PO43-. The intermediates generated during degradation process were studied, and the mechanism of the photodegradation process was proposed. CNTD-G could be easily collected from the reactor, and showed excellent recyclability. C) 2016 Elsevier B.V. All rights reserved.
机译：消除水生环境中的抗生素残留物已成为当前研究工作中最热门的话题之一。因此，我们制备了Ce，N共掺杂的TiO2 /硅藻土颗粒（CNTD-G）催化剂，以提供一种新的方法。作为一种典型的抗生素，土霉素（OTC）被选作在可见光照射下降解的目标污染物。载体硅藻土有助于TiO2纳米粒子在其表面上扩散，并抑制其团聚。 Ce和N掺杂剂的协同作用极大地改善了TiO2的可见光驱动的光活性。确定了最佳掺杂量和降解条件。此外，还研究了杂质离子的影响，包括阳离子：Ca2 +，Mg2 +，Ca2 +，Mg2 +，Ca2 +，Mg2 +。或阴离子：NO3-，SO42-和PO43-。研究了降解过程中产生的中间体，并提出了光降解过程的机理。 CNTD-G可以很容易地从反应器中收集到，并具有出色的可回收性。 C）2016 Elsevier B.V.保留所有权利。

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