摘要
在573 K的温度下煅烧PVP和硝酸银的复合物制备了白色柔软的微米银。红外光谱表明随着硝酸银含量的增加,PVP的羰基峰位逐渐发生红移,这说明硝酸银与PVP的羰基存在着配位作用。XRD图表明,在573 K的温度下煅烧硝酸银与PVP的复合物可以生成单质银,而在此温度下单独煅烧硝酸银则没有银的生成,这表明PVP与AgNO3结合后能够有效地降低AgNO3的热分解温度,从而形成微米银颗粒。
The micron silver was synthesized by directly calcining the composite of PVP and AgNO3 at 573 K. IR spectra of the mixture of AgNO3 and PVP were investigated in different mass ratios. The results showed that there are obvious interaction between AgNO3 and the carbonyl （ C = O） of PVP. With tile content of AgNO3 increasing, the carbonyl bands of PVP are red-shifted gradually. By calcining pure AgNO3 and the mixture of AgNO3 and PVP in different mass ratios at 573 K, Ag can be produced by calcining the mixture of AgNO3 and PVP at 573 K while not hy calcining pure AgNO3 at the same temperature, which indicates that PVP plays an important role in the process of decomposing AgNO3 to produce Ag. We propose that the interaction of coordination between AgNO3 and the carbonyl （ C = O） of PVP can reduce the decomposition temperature.
出处
《阜阳师范学院学报（自然科学版）》
2014年第1期38-41,共4页
Journal of Fuyang Normal University(Natural Science)
基金
安徽省科技计划项目(090518026
1301042112)
安徽高校自然科学研究重点项目(KJ2010A254)
安徽高校自然科学研究项目(KJ2012Z305)
阜阳师范学院科研项目(2008LQ13
2010FSKJ01ZD)资助
关键词
硝酸银
聚乙烯吡咯烷酮
红外光谱
热分解
扫描电镜
silver nitrate
polyvinyl pyrrolidone （PVP）
infrared spectrum
thermal decomposition
scanning electron microscopy （ SEM ）
