TÍNH CHẤT QUANG CỦA DUNG DỊCH CACBON NANO CHẾ TẠO TỪ HẠT ĐẬU XANH
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Từ khóa

vật liệu phát quang, hạt cacbon nano, phương pháp thủy nhiệt, hạt đậu xanh, hiệu suất lượng tử

Cách trích dẫn

1.
Quang NK, Nguyễn TS, Phan TKL, Lê XDN. TÍNH CHẤT QUANG CỦA DUNG DỊCH CACBON NANO CHẾ TẠO TỪ HẠT ĐẬU XANH. hueuni-jns [Internet]. 30 Tháng Chín 2022 [cited 15 Tháng Mười-Một 2024];131(1C):125-31. Available at: http://222.255.146.83/index.php/hujos-ns/article/view/6582

Tóm tắt

Trong nghiên cứu này, chúng tôi tiến hành chế tạo vật liệu hạt cacbon nano (CDs) từ hạt đậu xanh bằng phương pháp thủy nhiệt. Vật liệu CDs chế tạo được có đường kính trung bình d = 13,8 nm. Kết quả khảo sát phổ hấp thụ cho thấy đỉnh đặc trưng ở bước sóng l = 280 nm, ứng với chuyển dịch    n → π* của liên kết C=O. Các hạt CDs phát bức xạ dạng phổ rộng trong vùng 320–460 nm khi thay đổi bước sóng kích thích. Hơn nữa, sử dụng quinine sulfate làm dung dịch đối chứng và áp dụng phương pháp so sánh, chúng tôi đã bước đầu tính được giá trị hiệu suất lượng tử của dung dịch cacbon nano (12,18%). Đây là giá trị hiệu suất lượng tử khá cao khi so sánh với hạt cacbon nano chế tạo từ các nguồn nguyên liệu khác.

https://doi.org/10.26459/hueunijns.v131i1C.6582
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