Hoạt động quang xúc tác của các dải nano kết tinh mềm từ Fe80−xCoxZr10Si10 (x = 0, 40, và 80)

Topics in Catalysis - Trang 1-10 - 2022
Baris Avar1, Mrutyunjay Panigrahi2, Ali Kemal Soguksu3, Shashanka Rajendrachari4, Alaaddin Gundes5
1Department of Metallurgical and Materials Engineering, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
2School of Mechanical Engineering, Vellore Institute of Technology, Chennai, India
3Kahramanmaras Science and Arts Center, Kahramanmaras, Turkey
4Department of Metallurgical and Materials Engineering, Bartin University, Bartin, Turkey
5Department of Materials Science and Engineering, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey

Tóm tắt

Trong nghiên cứu này, các hợp kim Fe80−xCoxZr10Si10 (x = 0, 40, và 80 at.%) được sản xuất dưới dạng dải bằng kỹ thuật quay nóng chảy nhằm nghiên cứu hiệu quả phân hủy quang xúc tác của phẩm nhuộm methylene blue. Hiệu suất loại bỏ màu sắc của các dải này đã được nghiên cứu chi tiết. Phân tích nhiễu xạ tia X của các dải quay nóng chảy cho thấy tính chất nano kết tinh với sự biến thiên của hàm lượng Co. Phân tích hiển vi điện tử quét chỉ ra rằng độ nhám bề mặt tăng lên theo hàm lượng Co, và phân tích quang phổ phát xạ năng lượng cho thấy các giá trị thành phần danh nghĩa thực nghiệm khá gần nhau. Máy đo từ trường mẫu dao động đã được sử dụng để nghiên cứu tính chất từ của cả ba mẫu, và từ các đường cong M–H, đã xác nhận rằng các tính chất từ rất phụ thuộc vào thành phần các dải hợp kim trong quá trình quay nóng chảy. Sự phân hủy quang xúc tác theo thời gian của mẫu methylene blue được nghiên cứu dưới ánh sáng UV sử dụng quang phổ UV–Vis ở nhiệt độ phòng. Đã quan sát thấy rằng lượng phân hủy tăng lên do sự gia tăng hàm lượng cobalt trong các hợp kim Fe80−xCoxZr10Si10 (x = 0, 40, và 80) được sử dụng làm chất xúc tác trong quá trình phân hủy quang xúc tác methylene blue.

Từ khóa

#Fe80−xCoxZr10Si10 #photocatalytic degradation #methylene blue #melt-spinning technique #nanocrystalline alloys

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