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Ảnh hưởng của cấu trúc nanofiber In2O3 đến hiệu suất cảm biến amoniac của nanofiber hợp kim In2O3/PANI
Tóm tắt
Nanofiber hợp kim oxit indium/polyaniline (In2O3/PANI) với cấu trúc rắn hoặc rỗng của In2O3 đã được tổng hợp thành công thông qua phương pháp kết hợp dễ dàng và hiệu quả, bao gồm electrospinning, nung nóng ở nhiệt độ cao và polymer hóa tại chỗ. Nhiều kỹ thuật, bao gồm kính hiển vi điện tử quét, phương pháp Brunauer–Emmett–Teller, phổ hồng ngoại biến đổi Fourier, kính hiển vi điện tử truyền và nhiễu xạ tia X, đã được sử dụng để thu thập thông tin về hình thái, cấu trúc và tính tinh thể của các mẫu đã chuẩn bị. Hiệu suất cảm biến khí của các nanofiber hợp kim thu được đã được nghiên cứu bằng hệ thống thử nghiệm cảm biến khí tự chế ở nhiệt độ phòng. Tất cả các kết quả cho thấy cả nanofiber hợp kim In2O3/PANI rắn và rỗng đều có giá trị phản hồi cao hơn so với cảm biến PANI tinh khiết. Ngoài ra, tính chất cảm biến amoniac của nanofiber hợp kim In2O3/PANI rỗng tốt hơn nhiều so với nanofiber rắn. Hơn nữa, nanofiber hợp kim In2O3/PANI rỗng cũng cho thấy khả năng lặp lại và tính chọn lọc lý tưởng nhờ vào số lượng và loại hình P-N dị giao ở mức cao hơn và khác nhau.
Từ khóa
#In2O3; PANI; nanofiber; cảm biến khí; cấu trúc rỗng; hiệu suất cảm biến amoniacTài liệu tham khảo
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