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首页> 外文期刊>Revista mexicana de fisica >Preparation, optical characterization and stabilityof gold nanoparticles by facile methods
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Preparation, optical characterization and stabilityof gold nanoparticles by facile methods

机译：通过舒适方法制备，光学表征和金纳米粒子的稳定性

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Gold nanoparticles were obtained by reduction of chloroauric acid HAuCl4by two methods: conventional heating and microwave synthesis.In the microwave method, different cycles and sonication time were analyzed to establish the synthesis with smaller nanoparticle size andhigher absorbance. The influence of synthesis method, cycles quantity and sonication time in the gold nanoparticles size and plasmonresonance were studied. Gold nanoparticles were analyzed by UV-Vis spectrophotometry, dynamic light scattering and surface electronmicroscopy. The results indicate that the nanoparticles obtained by microwave have bigger size than those obtained by conventional heating,however, present higher absorption. The microwave nanoparticles were analyzed one year after its synthesis and it was found that the plasmonresonance signal remains almost unchanged. Finally, two equations were derived from the analyzes for estimate molar extinction coefficient,molar concentration, and nanoparticle average diameter.
机译：通过减少氯硼酸HauCl4获得金纳米颗粒：常规加热和微波合成。分析微波法，不同的循环和超声时间，以确定具有较小纳米颗粒尺寸的合成和高吸收。研究了合成方法，循环量和超声时间在金纳米颗粒尺寸和血管瘤中的影响。通过UV-Vis分光光度法，动态光散射和表面电子检查进行了金纳米颗粒。结果表明，通过微波获得的纳米颗粒具有比常规加热所获得的尺寸更大，但是目前较高的吸收。在合成后一年分析微波纳米粒子，发现血向信号仍然不变。最后，衍生出两种方程，用于估计摩尔消光系数，摩尔浓度和纳米颗粒平均直径的分析。

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