NÂNG CAO HIỆU ỨNG TƯƠNG HỖ HOẠT HÓA QUANG XÚC TÁC/PERSULFATE ĐỂ PHÂN HỦY DƯ LƯỢNG THUỐC BẢO VỆ THỰC VẬT BẰNG NANOCOMPOZIT ĐA OXIT BẬC BA ZnO/TiO2/MgO

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Tác giả: Thi Trang Le, Dinh Tuyen Nguyen, Huy Cuong Nguyen, Ngoc Truong Nguyen, Quang An Nguyen, Quyet Tien Nguyen, Thi Mai Nguyen, Thi Thu An Nguyen, Thi Thuc Anh Nguyen

Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Khoa học & Công nghệ - Trường Đại học Công nghiệp Hà Nội, 2023

Mô tả vật lý: tr.106

Bộ sưu tập: Metadata

ID: 379464

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In this study we present a method to synthesize new heterogenous photocatalytic materials based on ternary nanocomposite ZnO/MgO/TiO2 to activate persulphate (K2S2O8) for degradation of methylen blue dye (MB) and pesticide acetamiprid that used in aquaculture and agricultural cultivation under simulated sunlight. Photocatalytic composite samples with nano nanostructures were synthesized by hydrothermal method in an alkaline medium and characterized by X-ray diffraction (XRD), Electron absorption spectrum (UV-Vis), N2 absorption/desorpions (BET), High-resolution Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), Energy Dispersive X-ray Spectroscopy (EDX), Zeta potential measurement, Differential thermogravimetric method (TG-DTA), Decomposition activity of Methylen Blue and pesticides Acetamiprid over multi-oxides composite under simulated sunlight when used separatetly and in combination with persulfate (K2S2O8), with photocatalyst dose of 100 mg/L, irradaried intensity of 800µW/cm2, has been investigated over reaction time. The synergistic photocatalytic activation properties of persulfate by ZnO/TiO2/MgO material to decompose the pesticides and dye in aqueous solution also were investigated. The results showed that the composite photocatalytic material has shown excellent synergistic properties of the heterogeneous photocatalyst ZnO/TiO2/MgO-persulfate system in enhancing the decomposition of Methylen Blue and Acetamiprid residues in the water solution. The research results also show that the photocatalytic material ZnO/TiO2/MgO- persulfate system has potential for practical application to control diseases and treat contaminated environments in aquaculture and organic agricultural crop cultivation.Trong nghiên cứu này, chúng tôi trình bày phương pháp tổng hợp vật liệu quang xúc tác dị thể mới trên cơ sở nanocompozit ba phân tử ZnO/MgO/TiO2 để hoạt hóa Persulphate (K2S2O8) nhằm phân hủy thuốc nhuộm xanh methylen (MB) và thuốc trừ sâu acetamiprid sử dụng trong nuôi trồng thủy sản và trồng trọt nông nghiệp dưới ánh sáng mặt trời mô phỏng. Các mẫu tổ hợp quang xúc tác có cấu trúc nano được tổng hợp bằng phương pháp thủy nhiệt trong môi trường kiềm và được đặc trưng bởi các phương pháp nhiễu xạ Rơn gen XRD, Phổ hấp thụ điện tử (UV-Vis), Hấp thụ/giải hấp nito (BET), Hiển vi điện tử truyền qua phân giải cao (TEM), Quang phổ hồng ngoại biến đổi Fourier (FTIR), Quang phổ tia X tán sắc năng lượng (EDX) , Đo điện thế Zeta, Phương pháp đo nhiệt vi phân sai (TG-DTA)... Hoạt tính phân hủy của Methylen Blue và thuốc trừ sâu Acetamiprid trên tổ hợp đa oxit dưới ánh sáng mặt trời mô phỏng khi sử dụng riêng lẻ và kết hợp với Persulfate (K2S2O8), với liều lượng xúc tác quang 100 mg/L, cường độ chiếu xạ 800µW/cm2, đã được nghiên cứu. Tính chất hoạt hóa quang xúc tác tổng hợp của Persulfate bằng vật liệu ZnO/TiO2/MgO để phân hủy thuốc trừ sâu và thuốc nhuộm trong dung dịch nước cũng đã được nghiên cứu. Kết quả cho thấy vật liệu quang xúc tác composite đã thể hiện tính chất hiệp đồng tuyệt vời của hệ xúc tác quang dị thể ZnO/TiO2/MgO-persulfate trong việc tăng cường khả năng phân hủy dư lượng Methylen Blue và Acetamiprid trong dung dịch nước. Kết quả nghiên cứu cũng cho thấy hệ vật liệu quang xúc tác ZnO/TiO2/MgO-persulfate có tiềm năng ứng dụng thực tế để kiểm soát dịch bệnh và xử lý môi trường ô nhiễm trong nuôi trồng thủy sản và canh tác cây nông nghiệp hữu cơ.

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