以β-环糊精(β-CD)为稳定剂,葡萄糖为还原剂,采用“绿色化学方法”合成了平均粒径约为31nm的类球形银纳米粒子。研究了其对水溶液中痕量诺氟沙星荧光行为的影响,实验结果表明,制得的银纳米粒子对诺氟沙星具有较强的荧光猝灭效应,且随着加入银纳米粒子量的增加荧光猝灭效果逐渐增强。初步探讨了银纳米粒子对诺氟沙星的荧光猝灭机理。 With the β-cyclodextrin (β-CD) as stabilizer and glucose as reductant, “Spherical silver nanoparticles with average particle size of about 31 nm were synthesized by ” green chemistry method ". The effects of trace amounts of norfloxacin on the fluorescence of aqueous norfloxacin were studied. The experimental results show that the prepared silver nanoparticles have a strong fluorescence quenching effect on norfloxacin. With the addition of silver nanoparticles Increasing the fluorescence quenching effect gradually increased. The fluorescence quenching mechanism of norfloxacin by silver nanoparticles was preliminarily discussed.