TỔNG HỢP CÁC NANO COMPOZIT ZrO2/ZnO VÀ ZrO2/CuO PHA TẠP Ce4+ ỨNG DỤNG TRONG XÚC TÁC QUANG HÓA = SYNTHESIS OF NANOCOMPOSITE ZrO2/ZnO AND ZrO2/CuO DOPED Ce4+ APPLICATIONS IN PHOTOCATALYTIC

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Tác giả: Văn Ly Bùi, Mạnh Nhương Chu, Thị Vân Lý, Thị Minh Tâm Nguyễn, Văn Huấn Phạm

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2020

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 472743

Thêm vào giỏ

Ô nhiễm nguồn nước do các chất màu hữu cơ từ các nhà máy đang là vấn đề đáng lo ngại. Các phương pháp xử lý như hấp phụ, keo tụ, hay lọc, thường tiêu tốn năng lượng và gây ra ô nhiễm thứ cấp. Phương pháp xúc tác quang hiện nay đang được các nhà khoa học quan tâm. Đặc biệt là xúc tác quang sử dụng năng lượng mặt trời. Do đây là nguồn năng lượng sạch và vô tận. Trong bài báo này chúng tôi chế tạo các nano compozit ZrO2/ZnO và ZrO2/CuO pha tạp ion Ce4+ bằng phương pháp thủy nhiệt. Thử nghiệm hoạt tính xúc tác quang phân hủy xanh metylen (MB) dưới ánh sáng mặt trời mô phỏng. Kết quả cho thấy hình thái của vật liệu nano compozit tổng hợp là các hạt nano có đường kính 60-100 nm. Khi pha tạp ion Ce4+ vật liệu có hiệu suất phân hủy MB là 73,1% trong 180 phút, cao hơn so với không pha Ce4+ hiệu suất chỉ là 44,1%. Các phép phân tích nhiễu xạ tia X (XRD), kính hiển vi điện tử quét (SEM), phổ hồng ngoại (FT-IR) cũng đã được nghiên cứu. Kết quả này cho thấy vật liệu nano compozit ZrO2/ZnO và ZrO2/CuO pha tạp ion Ce4+ có tiềm năng ứng dụng trong xử lý nước và ô nhiễm môi trường. Water pollution due to organic pigments f-rom factories is a cause for concern. Treatment methods such as adsorption, flocculation, or filtration, often consume energy and cause secondary pollution. Photocatalytic methods are currently of interest to scientists. Especially photocatalysts use solar energy. Because this is a clean, endless source of energy. In this paper, we synthesisized ZrO2/ZnO and ZrO2/CuO composite nanoparticles doped with Ce4+ ions by hydrothermal method. Photocatalytic activity of methylene blue (MB), under simulated sunlight was tested. The results show that the morphology of synthetic composite nanomaterials is nanoparticles with diameter of 60-100 nm. When meterial was doped with Ce4+, the perfomance degradation of MB is 73.1% in 180 minutes, higher than that of no doped Ce4+ ion with 44.1%. Analysis of X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FT-IR) have also been studied. This result shows that the ZrO2/ZnO and ZrO2/CuO nanocomposites doped with Ce4+ have potential applications in water treatment and environmental pollution.

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