Khả năng phân hủy quang hiệu quả của rhodamine B bằng cách sử dụng than hoạt tính từ vỏ lạc được trên bề mặt TiO2 doped bạc dưới ánh sáng mặt trời

Ionics - 2023
M. Geetha1, S. Renukadevi2, D. Senthil Kumar3, S. Ragupathy4
1Department of Physics, R P Sarathy Institute of Technology, Poosaripatti, Salem, India
2Department of Physics, K.S.R. College of Engineering (Autonomous), Tiruchengode, India
3Department of Physics, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, India
4Department of Physics, Government Arts and Science College for Women, Karimangalam, Dharmapuri, India

Tóm tắt

Trong bài báo này, than hoạt tính từ vỏ lạc được pha tạp bạc TiO2 (Ag:TiO2/GNSAC) được sử dụng làm chất xúc tác quang cho việc loại bỏ dung dịch nhuộm rhodamine B (RhB). Hoạt tính xúc tác quang của TiO2, tác động của việc pha tạp bạc và tải trọng GNSAC đã được điều tra. Phân tích XRD, UV-DRS, SEM với EDS, và BET đã cung cấp những mô tả toàn diện về từng mẫu. Các đặc điểm quang học của mẫu được pha tạp bạc và tải GNSAC cho thấy sự dịch chuyển đỏ trong khả năng hấp thụ ánh sáng và giảm tỷ lệ tái hợp của các tải điện. Hiệu suất xúc tác quang của TiO2 nguyên chất, Ag:TiO2 và GNSAC lần lượt được tìm thấy là 63,91%, 72,17% và 28,69% sau 120 phút chiếu sáng mặt trời. Khi GNSAC tải Ag:TiO2, hiệu suất xúc tác quang của nó được cải thiện đáng kể lên tới 98,69%. Việc phân hủy quang của Ag:TiO2/GNSAC có tiềm năng lớn và có thể được coi là một phương pháp hứa hẹn cho việc xử lý ô nhiễm trong nước thải.

Từ khóa

#than hoạt tính #TiO2 #Ag #rhodamine B #xúc tác quang

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