纳米银三角片的光诱导法可控制备及其抗菌活性
Triangular Silver Nanoprism: Morphology-Controlled Synthesis by a Photo-Mediated Method and Antimicrobial Property
作者单位E-mail
林璟 广州大学化学化工学院, 广州 510006 linjin00112043@126.com 
陈结形 广州大学化学化工学院, 广州 510006  
何倩莹 广州大学化学化工学院, 广州 510006  
白文丽 广州大学化学化工学院, 广州 510006  
王伟 广州大学化学化工学院, 广州 510006  
杨伟 广州大学化学化工学院, 广州 510006  
郑成 广州大学化学化工学院, 广州 510006  
刘自力 广州大学化学化工学院, 广州 510006  
柯光耀 广州大学化学化工学院, 广州 510006  
李晓欣 广州大学化学化工学院, 广州 510006  
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nAgNO3nNa3C6H5O7nNaBH4=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。
关键词: 纳米材料  纳米结构  合成  纳米银三角片  光诱导法  直接化学还原法  抗菌活性
基金项目: 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)和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。
Abstract: A facile method was used for synthesis of triangular silver nanoprisms by the photo-mediated methods, which was a considerably simple procedure and relatively low requirements for instruments. Effects of lighting time, the amount of sodium citrate and OH- ions on the yield, uniformity and stability of triangular silver nanoprisms were investigated. The obtained triangular silver nanoprisms were also characterized by TEM and UV-Vis spectra. The optimized photo-mediated prepared conditions for triangular silver nanoprisms were as follows:lighting for 3.5 h, nAgNO3:nNa3C6H5O7:nNaBH4=1:10:0.8, and cOH-=0.125 mol·L-1. The results of TEM showed that triangular silver nanoprisms were successfully obtained with a diameter distribution of 70~80 nm. The photo-mediated method was good for the synthesis of monodisperse high-quality triangular silver nanoprisms than the direct chemical reduction route. Results of antimicrobial activities showed that silver nanoprisms had better antibacterial activity against S. Aureus and E. Coli than spherical particles.
Keywords: nanomaterials  nanostructures  synthesis  triangular silver nanoprisms  photo-mediated method  direct chemical reduction route  antimicrobial activity
投稿时间:2016-09-22 修订日期:2017-02-25
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林璟,陈结形,何倩莹,白文丽,王伟,杨伟,郑成,刘自力,柯光耀,李晓欣.纳米银三角片的光诱导法可控制备及其抗菌活性[J].无机化学学报,2017,33(4):569-575.
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