Enhanced oxidation of rhodamine B using Mg-Cu-Al hydrotalcite/chitosan composites as catalysts

Vietnam Journal of Catalysis and Adsorption - Tập 13 Số 3 - Trang 12-16 - 2024
Nguyen Thi Nhu1, Le Nhu Quynh1, Vu Van Long1, Tran Van Chien1, Nguyen Thi Thuy Hoa1, Le Van Hieu1
1Institute of Environment, Vietnam Maritime University, Hai Phong, Vietnam

Tóm tắt

A series of Mg-Cu-Al hydrotalcite/chitosan materials have been synthesized via a co‑precipitation method, in which chitosan is synthesized from chitin extraction from waste shrimp shells. The obtained solids were characterized by XRD, BET, EDX, IR techniques. The materials have a well crystallized hydrotalcite structure and medium surface area. It was observed that Mg-Cu-Al hydrotalcite/chitosan catalysts exhibited the high activity in catalyzing enhanced oxidation of rhodamine B solution with H2O2. 95% of 100 mg/L of rhodamine B solution could be decolourized by Mg-Cu-Al hydrotalcite/chitosan composite with the presence of hydrogen peroxide at room temperature for 150 minutes. Therefore, Mg-Cu-Al  hydrotalcite/chitosan is a promising and reasonable catalyst for use in the enhanced oxidation of rhodamine B.

Từ khóa

#Chitosan #Oxidation #Mg-Cu-Al hydrotalcite #Rhodamine B #H2O2

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