Heteroaggregation of graphene oxide nanoparticles and kaolinite colloids

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• 作者：Nikolaos P. Sotirelis ; Constantinos V. Chrysikopoulos ; ^{cvc@enveng.tuc.gr}
• 关键词：Graphene oxide ; Nanoparticles ; Attachment ; Heteroaggregation ; Kaolinite ; Clays ; Thermodynamics
• 刊名：Science of The Total Environment
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：579
• 期：Complete
• 页码：736-744
• 全文大小：1132 K
• 卷排序：579

文摘

Heteroaggregation between GO and KGa-1b is not favorable under normal conditions. High ionic strength and low pH values enhance the attachment of GO onto KGa-1b. The attachment of GO onto KGa-1b is exothermic and not spontaneous. GO −(KGa-1b) formation is attributed to surface charge changes of KGa-1b colloids. The CCC for the heteroaggregation between GO and KGa-1b is 152 mM NaCl.