Studies on the removal efficiency of Malachite Green in aqueous solution using bimetallic CuZn-ZIFs materials
Abstract
In this study, bimetallic CuZn-ZIFs material was synthesized via a solvothermal method and evaluated for its ability to remove malachite green from aqueous solutions. The structural, morphological, and physicochemical properties of CuZn-ZIFs were characterized using PXRD, FT-IR, SEM, TGA, BET, and EDX analyses. CuZn-ZIFs exhibited a characteristic polyhedral morphology, high thermal stability up to approximately 350°C, and a specific surface area of 1286 m2/g. The removal efficiency of malachite green reached 98.7% when 0.3 g/L CuZn-ZIFs and 0.1 g/L potassium peroxydisulfate were applied within 20 minutes at room temperature. After four consecutive reuse cycles, the material maintained a removal efficiency above 85%, indicating effective recovery and reuse potential.
Tóm tắt
Trong nghiên cứu này, vật liệu lưỡng kim CuZn-ZIFs đã được tổng hợp bằng phương pháp nhiệt dung môi và được đánh giá khả năng xử lý thuốc nhuộm malachite green trong nước. Các đặc tính cấu trúc, hình thái và tính chất hóa lý của CuZn-ZIFs được xác định thông qua các phương pháp như PXRD, FT-IR, SEM, TGA, BET và EDX. CuZn-ZIFs thể hiện hình thái đa diện đặc trưng, độ bền nhiệt cao lên đến khoảng 350°C và diện tích bề mặt riêng đạt 1286 m2/g. Hiệu suất xử lý malachite green đạt 98,7% khi có sự hiện diện của 0,3 g/L CuZn-ZIFs và 0,1 g/L potassium peroxydisulfate trong 20 phút ở nhiệt độ phòng. Sau bốn chu kỳ tái sử dụng, vật liệu vẫn duy trì hiệu suất loại bỏ trên 85%, cho thấy khả năng thu hồi và tái sử dụng hiệu quả.
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