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Photocatalytic degradation of 2,4-dichlorophenol using bio-green assisted TiO2–CeO2 nanocomposite system
Environmental Research ( IF 7.7 ) Pub Date : 2021-02-06 , DOI: 10.1016/j.envres.2021.110852
Lalitha Gnanasekaran , Saravanan Rajendran , A.K. Priya , D. Durgalakshmi , Dai-Viet N. Vo , Lorena Cornejo-Ponce , F. Gracia , Matias Soto-Moscoso

In recent times, cost effective synthesis of semiconductor materials has been a subject of concern for the day to today applications. In this work, novelty has been made on the facile synthesis of metal oxides (TiO2 and CeO2) and nanocomposites (TiO2–CeO2) through sol-gel and precipitation methods of imparting lemon extract. The synthesized materials behave as the functional catalysts which has been further carried out for the photocatalytic degradation against 2,4-Dichlorophenol (2,4-DCP). The materials are then valued for the structural and optical properties. The lemon extract used in synthesis has played a premier role in upgrading the charge carrier separation, bandgap, and size reduction of the composite system. Further, the CeO2 supported TiO2 sample acts as the better visible light catalyst, due to the prevention of aggregation and existence of line dislocation that supported to access the additional electron trap sites.



中文翻译:

生物绿色辅助TiO 2 -CeO 2纳米复合材料光催化降解2,4-二氯苯酚

近年来,以经济有效的方式合成半导体材料已成为当今应用的关注主题。在这项工作中,金属氧化物(TiO 2和CeO 2)和纳米复合材料(TiO 2 -CeO 2)的简便合成已经取得了新颖性。)通过溶胶-凝胶和沉淀方法得到柠檬提取物。合成的材料起着功能催化剂的作用,该催化剂已经进一步进行了对2,4-二氯苯酚(2,4-DCP)的光催化降解。然后对材料的结构和光学性能进行评估。合成中使用的柠檬提取物在提高复合体系的电荷载流子分离,带隙和减小尺寸方面起着首要作用。此外,由于防止聚集和存在支持进入额外电子陷阱位点的线位错的存在,CeO 2负载的TiO 2样品充当了更好的可见光催化剂。

更新日期:2021-02-15
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