邱贤华, 苏翔宇, 陈素华, 李薛君. 不同形貌CeO2的制备及其在污水催化臭氧化处理中的性能[J]. 南昌航空大学学报(自然科学版), 2014, 28(2): 80-85,104. DOI: 10.3969/j.issn.1001-4926.2014.02.014
引用本文: 邱贤华, 苏翔宇, 陈素华, 李薛君. 不同形貌CeO2的制备及其在污水催化臭氧化处理中的性能[J]. 南昌航空大学学报(自然科学版), 2014, 28(2): 80-85,104. DOI: 10.3969/j.issn.1001-4926.2014.02.014
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WAN li-peng, MAO Ping-ping, REN Xiang-hui, WANG Shan-lin. Preparation of CeO2 with different Morphologies and its Application toAastewater Treatment with Catalytic Ozonation[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(2): 80-85,104. DOI: 10.3969/j.issn.1001-4926.2014.02.014
Citation: WAN li-peng, MAO Ping-ping, REN Xiang-hui, WANG Shan-lin. Preparation of CeO2 with different Morphologies and its Application toAastewater Treatment with Catalytic Ozonation[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(2): 80-85,104. DOI: 10.3969/j.issn.1001-4926.2014.02.014
shu

不同形貌CeO2的制备及其在污水催化臭氧化处理中的性能

Preparation of CeO2 with different Morphologies and its Application toAastewater Treatment with Catalytic Ozonation

    摘要
  • 摘要: 采用水热合成法,以Ce(NO3)3·6H2O为铈源,分别制备了CeO2纳米片、纳米棒和纳米管等3种不同形貌的催化剂,并对其进行了化学结构和表面性能的表征;将这些催化剂用于催化臭氧化降解废水时发现催化剂的表面形态及反应体系的控制条件对催化效率具有显著的影响,其中CeO2纳米管表现出最优良的催化活性。在CeO2纳米管用量为0.5g,臭氧投加量为15mg/min时催化臭氧化反应2h后,对体积为1L、初始TOC浓度为100mg/L的柠檬黄溶液中的有机物矿化率高达97%,因此,纳米CeO2作为催化臭氧化技术中新型催化剂具有很大的发展前景。

     

    Abstract: Taking Ce(NO3)3·6H2O as cerium source, CeO2 nanoplates, CeO2 nanorods and CeO2 nanotubes were prepared by using hydrothemal process. Characterization of chemical structure and surface properties for these materials was carried out and their efficacy in the catalytic ozonation degradation of wastewater was investigated. The results showed that the surface morphology and reaction conditions played great role in the removal of organic compounds. It was found that the CeO2 nanotubes showed superior catalytic activity. When 0.5g of CeO2 nanotubes and 15mg/min of ozone were applied in catalytic ozonation, the mineralization rate reached 97% after 2 h treatment for 1L of model wastewater containing lemon yellow with 100mg/L TOC. Therefore, nano-CeO2 as a new catalyst in catalytic ozonation technology has great prospects.

     

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