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Photocatalytic Degradation of Rhb Dye Using Hybrid Nanocomposite Biocl@Kaol Under Sunlight Irradiation Publisher



Ighnih H1 ; Haounati R1 ; Malekshah RE2 ; Ouachtak H1, 3 ; Jada A4, 5 ; Addi AA1
Authors
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Authors Affiliations
  1. 1. Laboratory of Organic and Physical Chemistry, Faculty of Science, Ibn Zohr University, Agadir, Morocco
  2. 2. Medical Biomaterial Research Centre (MBRC), Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Faculty of Applied Science, Ait Melloul, Ibn Zohr University, Agadir, Morocco
  4. 4. Institute of Materials Science of Mulhouse (IS2M), Haute Alsace University, Mulhouse, 68100, France
  5. 5. Strasbourg University, Strasbourg, 67081, France

Source: Journal of Water Process Engineering Published:2023


Abstract

The development of advanced photocatalytic materials for environmental purposes is among the high research topics. In the present work, a nanocomposite BiOCl@Kaol, made of kaolinite supported Bismuth Oxychloride “BiOCl” photocatalyst, was designed for Rhodamine B dye photodegradation in aqueous solution. The obtained BiOCl@Kaol nanocomposite exhibited high photocatalytic activity in the removal of Rhodamine B dye (RhB) from water, with a degradation efficiency reaching 100 % within 35 min. Furthermore, it was observed that the nanocomposite photocatalyst, BiOCl@0.4Kaol, at optimal Clay/BiOCl ratio of 0.4, exhibited 4.37 times better photocatalytic performance, compared to bare BiOCl. Finally, to elucidate the photodegradation mechanisms, we determined various interactions occurring between BiOCl and kaolinite particles, as well as between RhB molecules and BiOCl@Kaol nanocomposites, using Monte Carlo calculations. It was concluded from Monte Carlo calculations that hydrogen bonds were established between oxygen atoms of BiOCl and H of kaolinite (001) hydroxyl groups upon the adsorption of BiOCl (003) particles on the kaolinite (001) surface, owing to its high negative interaction energy. Meanwhile, van der Waals attraction was also established between the RhB molecules and the BiOCl@Kaol (001) surface. © 2023
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