纳米银三角片的光诱导法可控制备及其抗菌活性

发布时间：2018-01-18 12:06

本文关键词：纳米银三角片的光诱导法可控制备及其抗菌活性　出处：《无机化学学报》2017年04期 　论文类型：期刊论文

【摘要】：采用一种快速高效的光诱导法合成了纳米银三角片,系统地考察了光照时间、柠檬酸钠用量、OH-用量和合成方法对银纳米三角片的合成产率、尖端形貌及其稳定性的影响。研究结果表明,采用光诱导法合成纳米银三角片的最优条件为光照时间3.5 h,反应物物质的量之比n_(AgNO_3)∶n_(Na_3C_6H_5O_7)∶n_(NaBH_4)=1∶10∶0.8,OH-浓度0.125 mmol·L~(-1),合成出粒径70~80 nm的纳米银三角片,透射电镜和紫外可见分光光度的表征结果表明:光诱导法相对于直接化学还原法制得的纳米银三角片具有较好的微观形态、产率及稳定性。抗菌测试结果表明三角片形态的纳米银比球型颗粒形态的纳米银具有更优异的抗菌性能。
[Abstract]:Silver nanoparticles were synthesized by a fast and efficient photo-induction method. The light time, the amount of sodium citrate and the synthesis yield of silver nanoparticles were investigated systematically. The results show that the optimum conditions for the photoinduced synthesis of silver nanoparticles are illumination time 3.5 h. The ratio of reactants to the quantity of the reactants is that the number of the reactants is nothing more than the number of things that will be added to the number of things; the number of the reactants will be nothing more than the volume of the reactants; the volume of the reactants will be nothing more than the volume of the reactants. The silver nanoparticles were synthesized with the concentration of 0.125 mmol 路L ~ (-1) mmol 路L ~ (-1) O ~ (-). The results of transmission electron microscopy (TEM) and UV-Vis spectrophotometry showed that the photoinductive method had a better microstructure than that obtained by direct chemical reduction method. The results of antimicrobial test showed that nano-silver in triangular shape had better antimicrobial properties than that in spherical shape.
【作者单位】：广州大学化学化工学院;
【基金】：国家自然科学基金(No.21676060,21676061) 广东省自然科学基金(No.2015A030313506) 广东省科技计划项目(No.2014A010105052) 应用表面与胶体化学教育部重点实验室开放课题(No.2016017)资助
【分类号】：O614.122;TB383.1
【正文快照】： 由于具有独特的3个尖锐的尖端结构,纳米银三角片与其他金属纳米粒子相比有更为独特的光学性质,近年来引起了广泛关注[1-5]。其在表面增强拉曼光谱(SERS)、太阳能电池等领域展现出诱人的应用潜力[6-8]。此外,纳米银三角片产生的局域表面等离子共振峰对于其与环境分子或生物分子

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