Preparation and photocatalytic property of silver nanoparticles using cationic pyridine derivative

摘要

Through reducing action of diethylene triamine and the regulatory role of 1-hexadecylpyridinium bromide, uniform, mono-dispersed and stabilized silver nanoparticles were obtained by chemical reduction method in room temperature. The size of the obtained silver particles is about 60-90nm. The reaction process of the formation of silver nanoparticle has a distinct color change, varying from colorless to pale yellow and finally brownish yellow. The as-prepared silver nanoparticles have showed a relatively good photocatalytic property on Congo red and Rhodamine B.