超声-光催化协同工艺降解有机污染物用 CuO-TiO/rGO。
Synergistic effect of sono-photocatalytic process for the degradation of organic pollutants using CuO-TiO/rGO.
机构信息
SRM Research Institute, SRM University, Kattankulathur, 603203 Chennai, Tamilnadu, India; Institute of Catalysis, Department of Chemical Engineering, University of Cape Town, Cape Town 7701, South Africa.
SRM Research Institute, SRM University, Kattankulathur, 603203 Chennai, Tamilnadu, India.
出版信息
Ultrason Sonochem. 2019 Jan;50:218-223. doi: 10.1016/j.ultsonch.2018.09.021. Epub 2018 Sep 22.
Combinations of different Advanced Oxidation Processes (AOPs) are being exploited for waste water treatment. The usage of ultrasound in photocatalysis finds much attention as the combined process offers some advantages over individual processes. Herein, we report the ultrasound assisted photocatalytic degradation of an organic pollutant (methyl orange as a model dye) in the presence of CuO-TiO/rGO photocatalyst which was prepared by a simple wet impregnation method. A synergistic effect (3.7-fold) was observed by combining the sonolysis and photocatalysis processes. Influence of Cu loading and graphene oxide (GO) dosage over the photocatalytic performance of TiO was examined in detail. The catalyst dosage and initial concentration of MO were optimized based on a series of experimental studies. Besides, neutral pH was found to show an optimum efficiency for this sono-photocatalytic process.
不同高级氧化工艺（AOPs）的组合正被用于废水处理。超声在光催化中的应用受到了广泛关注，因为该联合工艺相对于单个工艺具有一些优势。在此，我们报告了在 CuO-TiO/rGO 光催化剂存在下，超声辅助光催化降解有机污染物（甲基橙作为模型染料）的情况，该光催化剂是通过简单的湿法浸渍法制备的。通过结合超声和光催化过程，观察到协同效应（3.7 倍）。详细考察了 Cu 负载量和氧化石墨烯（GO）用量对 TiO 光催化性能的影响。基于一系列实验研究，优化了催化剂用量和 MO 的初始浓度。此外，研究发现该声-光催化过程在中性 pH 下表现出最佳效率。
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