CẤU TRÚC VÀ ĐẶC TRƯNG TÍNH CHẤT CỦA ZrO2/CuO PHA TẠP Er3+  CHO XÚC TÁC QUANG PHÂN HỦY XANH METYLEN  DƯỚI ÁNH SÁNG KHẢ KIẾN

Phạm Văn Huấn

doi:10.34238/tnu-jst.10519

CẤU TRÚC VÀ ĐẶC TRƯNG TÍNH CHẤT CỦA ZrO2/CuO PHA TẠP Er3+ CHO XÚC TÁC QUANG PHÂN HỦY XANH METYLEN DƯỚI ÁNH SÁNG KHẢ KIẾN

Thông tin bài báo

Ngày nhận bài: 03/06/24 Ngày hoàn thiện: 10/07/24 Ngày đăng: 11/07/24

Các tác giả

Phạm Văn Huấn , Trường Đại học Điện lực

Tóm tắt

Ô nhiễm nước thải có chứa chất màu hữu cơ khó phân hủy là một vấn đề toàn cầu, phương pháp quang xúc tác đang là phương pháp nhiều ưu việt. Tuy nhiên các vật liệu quang xúc tác hiện nay chủ yếu có hoạt tính khi được chiếu sáng bởi bức xạ UV. Trong nghiên cứu này vật liệu nano composite ZrO₂/CuO pha tạp Er³⁺ được tổng hợp bằng phương pháp đồng kết tủa, có hoạt tính quang xúc tác dưới ánh sáng khả kiến. Đặc tính của ZrO₂/CuO:Er³⁺ được khảo sát bằng kính hiển vi (SEM), phổ tán sắc năng lượng tia X (EDS), (TEM), XRD, phổ phản xạ khuếch tán (DRS). Các hạt nanocomposite ZrO₂/CuO:Er³⁺ thu được có đường kính trung bình khoảng 12 - 14 nm. XRD cho thấy ZrO₂ hình thành pha tetragonal, CuO hình thành pha monoclinic. Tính chất quang xúc tác của vật liệu dưới ánh sáng mặt trời mô phỏng phân hủy 95% MB (20 mg.L⁻¹) trong thời gian 210 phút với hằng số phân hủy là k_app = 6.87×10⁻³ min⁻¹. Nghiên cứu cho thấy vật liệu nano composite ZrO₂/CuO pha tạp Er³⁺ có tiềm năng ứng dụng trong lĩnh vực xử lý nước thải dệt nhuộm, xử lý ô nhiễm nước thải dưới ánh sáng mặt trời.

Từ khóa

Nano ZrO2/CuO:Er3+; Quang xúc tác; Đồng kết tủa; Xanh Methylene; Nanocomposite

Toàn văn:

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Tài liệu tham khảo

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DOI: https://doi.org/10.34238/tnu-jst.10519

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