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Loại bỏ Cr(VI) từ dung dịch nước bằng cách sử dụng ống nano polymer
Tóm tắt
Các ống nano polymer tự lắp ráp được thu được thông qua phương pháp solvothermal đơn giản. Các tính chất lý hóa của chúng đã được xác định thông qua các kỹ thuật SEM, BET, TGA, FT-IR, XPS và cộng hưởng từ hạt nhân 13C trạng thái rắn. Các yếu tố như pH ban đầu, liều lượng và các ion đồng tồn tại đã được đánh giá để kiểm tra hiệu suất hấp phụ Cr(VI). Kết quả cho thấy bề mặt ống nano polymer chứa một lượng lớn các nhóm chức hữu cơ và cấu trúc xốp. Trong dung dịch Cr(VI) nồng độ 140 mg/L, ống nano polymer đạt được khả năng hấp phụ Cr(VI) lớn nhất là 147,81 mg/g. Động học hấp phụ và các đồng thể hiện tâm đã đồng nhất với mô hình giả bậc hai và mô hình Redlich–Peterson, tương ứng. Quá trình desorption cho thấy rằng các ống nano polymer dễ dàng tái sinh trong dung dịch có độ phân cực mạnh và có hiệu quả loại bỏ cao. Độ mạnh ion đóng vai trò quan trọng trong quá trình hấp phụ và tương tác hấp phụ bao gồm tương tác tĩnh điện, khử và chelation trong nghiên cứu này. Phương pháp tự lắp ráp sẽ tạo ra một chất hấp phụ có hiệu quả cao.
Từ khóa
#Cr(VI) #ống nano polymer #hấp phụ #động học hấp phụ #mô hình Redlich–Peterson.Tài liệu tham khảo
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