Doping cobalt vào hạt nano titanium dioxide để phân huỷ atenolol trong nước

Springer Science and Business Media LLC - Tập 28 - Trang 7423-7430 - 2020
Zeid A. Alothman1, Ahmad Yacine Badjah1, Omar M.L. Alharbi2, Imran Ali1,2,3,4
1Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
2Department of Biology, Faculty of Sciences, Taibah University, Al-Medina Al-Munawara, Saudi Arabia
3Department of Chemistry, College of Sciences, Taibah University, Al-Medina Al-Munawara, Saudi Arabia
4Department of Chemistry, Jamia Millia Islamia (Central University) New Delhi, New Delhi, India

Tóm tắt

Hạt nano TiO2 nhiễm cobalt đã được chuẩn bị và đặc trưng hóa bằng FT-IR, TEM, SEM và XRD. Hình dạng bề mặt có hình cầu với kích thước khoảng ~ 26.46 nm. Tỉ lệ phân huỷ photodegradate atenolol đạt 90% với nồng độ 15 mg/L, thời gian khuấy 40 phút, pH 2, liều lượng 2.0 g/L hạt nano, độ dài sóng UV 200.0 nm, và lượng hydrogen peroxide là 2.0 mL/L tại nhiệt độ 30 °C. Quá trình phân hủy atenolol tuân theo động học bậc nhất với cơ chế bao gồm sự hấp phụ của atenolol trên các hạt nano TiO2 nhiễm và sự phân hủy của nó dưới bức xạ UV. Cặp lỗ (h+) và electron (e−) được tạo ra bởi các hạt nano TiO2 nhiễm cobalt, tạo ra các gốc tự do hydroxyl và các anion siêu oxit. Các loài này làm phân hủy atenolol.

Từ khóa

#TiO2 nhiễm cobalt #hạt nano #phân huỷ atenolol #chất xúc tác quang #động học bậc nhất

Tài liệu tham khảo

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