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Production of Nanoporous Zeolites Modified by Silver Ions with Antibacterial Properties
Materials Science ( IF 0.7 ) Pub Date : 2021-04-28 , DOI: 10.1007/s11003-021-00461-1
Z. О. Znak , S. А. Коrnii , A. S. Маshtaler , O. І. Zin

We study the effect of activation of clinoptilolite specimens by the solutions of HCl, H2SO4 , NaOH, and NH4Cl with their subsequent thermal treatment for the sorption capacity in silver ions. It is shown that the highest sorption capacity is observed for the clinoptilolite activated by a sodium-hydroxide solution. It was established that, in all cases, the increment of sorption capacity observed upon attainment of a temperature of 200°С is insignificant. The rate of sorption of silver ions by clinoptilolite preliminarily activated by reagents is higher than the initial rate (without activation) by an order of magnitude. We also established the influence of the temperature of treatment of chemically activated clinoptilolite on the sorption rate of silver ions. It was shown that their absorption by clinoptilolite occurs according to the mechanisms of ion exchange and sorption.



中文翻译:

具有抗菌性能的银离子修饰的纳米孔沸石的制备

我们研究了HCl,H 2 SO 4,NaOH和NH 4溶液对斜发沸石标本的活化作用Cl及其后续热处理对银离子的吸附能力。结果表明,用氢氧化钠溶液活化的斜发沸石具有最高的吸附能力。已经确定,在所有情况下,在达到200℃时观察到的吸附容量的增加都是微不足道的。试剂初步活化的斜发沸石对银离子的吸附速率比初始速率(未活化)高一个数量级。我们还建立了化学活化斜发沸石处理温度对银离子吸附速率的影响。结果表明,斜发沸石对它们的吸收是根据离子交换和吸附的机理而发生的。

更新日期:2021-04-29
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