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Kỹ thuật hóa học

Lưu Minh Đại, Đào Ngọc Nhiệm

Tổng hợp CuO kích thước namomet bằng phương pháp đốt cháy gel sử dụng Polyvinyl Ancol ở nhiệt độ thấp

Synthesis of nanosized CuO by the gel combustion method using polyvinyl alcohol at low temperature

Hóa học

2012

6

679-681

0866-7144

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.

TTKHCNQG, CVv14