Nghiên cứu chế tạo vật liệu tổ hợp Fe2O3 và MgO trên nền graphen đa lớp ứng dụng làm vật liệu hấp phụ kim loại nặng As trong nước
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https://doi.org/10.54939/1859-1043.j.mst.VITTEP.2022.91-99Từ khóa:
Tổ hợp graphen/Fe2O3-MgO; Hỗ hợp oxit Fe2O3-MgO; Hấp phụ asen;Tóm tắt
Tấm nano graphen (GNP) có thể được sử dụng như một chất nền để phân bố đồng đều các hạt nano có khả năng hấp phụ nhằm cải thiện và nâng cao khả năng hấp phụ kim loại nặng của chúng. Trong bài báo, tổ hợp nano graphen/Fe2O3-MgO được chế tạo bằng phương pháp thủy nhiệt. Các đặc trưng và tính chất của tổ hợp vật liệu được xác định bằng phương pháp kính hiển vi điện tử quét (SEM), kính hiển vi điện tử truyền qua (TEM), phổ tán xạ năng lượng tia X (EDX), phương pháp nhiễu xạ tia X (XRD). Nồng độ asen được xác định bằng quang phổ phát xạ nguyên tử plasma vi sóng (AES). Tổ hợp graphen/Fe2O3-MgO cho thấy hiệu suất hấp phụ cao và nhanh chóng đối với asen trong dải pH rộng, độ bền cao, đặc biệt có khả năng tái chế, do đó có thể trở thành một loại vật liệu hứa hẹn để xử lý ô nhiễm asen trong môi trường nước một cách hiệu quả.
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