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Gravimetric analysis of the autocatalytic growth of copper microparticles in aqueous solution

机译：水溶液中铜微粒自催化生长的重量分析

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The growth kinetics of copper microparticles was analysed by using the gravimetric method. The copper microparticles were synthesized in aqueous solution containing cupric ion and HCHO under various conditions (temperature, additive) and the total mass was monitored during the synthesis. The relation between the total mass and time was formularized using heterogeneous and pseudo-first order reaction kinetics of the autocatalytic surface growth of copper with a modification of the Finke–Watzky kinetic model. Fitting of theoretical curves to the experimental results with various temperatures provided the rate constants of the surface growth, and the reaction activation energy was found from the Arrhenius plot to be 105.4 kJ mol ~(?1) . The obtained value was validated by comparing it with one from copper film growth. Its change was observed with the addition of 2,2′-dipyridyl during synthesis.
机译：使用重量分析法分析了铜微粒的生长动力学。在包含铜离子和HCHO的水溶液中，在各种条件（温度，添加剂）下合成铜微粒，并在合成过程中监控总质量。总质量和时间之间的关系是通过对Finke-Watzky动力学模型的修改，利用铜的自催化表面生长的异质和拟一级反应动力学公式来计算的。理论曲线与各种温度下的实验结果的拟合提供了表面生长的速率常数，并且从阿伦尼乌斯图中发现反应活化能为105.4 kJ mol〜（？1）。通过将其与铜膜生长得到的值进行比较来验证所获得的值。在合成过程中添加2,2'-联吡啶可观察到其变化。

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