Tổng hợp cuo kích thước namomet bằng phương pháp đốt cháy gel sử dụng polyvinyl ancol ở nhiệt độ thấp

• Tác giả: Ngọc Nhiệm Đào, Minh Đại Lưu
• Ngôn ngữ: vie
• Ký hiệu phân loại: 547.7 Macromolecules and related compounds
• Thông tin xuất bản: Hóa học, 2012
• Mô tả vật lý: 679-681
• Bộ sưu tập: Metadata
• ID: 644578

Tóm tắt

Copper oxide has been synthesized at low temperature (450°C) by the combustion of gel prepared from polyvinyl alcohol (PVA) and copper (II) nitrate. The crystalline phase and morphological characterizations of CuO were carried out by means by X-ray difftaction (XRD) and scanning electron microscopy (SEM). The results show that tenorite nanosized CuO phase was fonned at temperature as low as 300°C. Further thennal treatment from 150°C to 450°C in 2 hour yields the single phase CuO with average primary size 100 nm. The effects of pH value of the precursor solution as well as the molar ratio of copper (II) cation over PVA, calcinations temperature, gel formation temperature on the formation oftenorite CuO phase were also investigated.