Colloids and Surfaces A 538 (2018) 63–72 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa Research Paper Eﬀects of temperature on aggregation kinetics of graphene oxide in aqueous solutions a,b b, b c,b c,b d Mei Wang , Bin Gao , Deshan Tang , Huimin Sun , Xianqiang Yin , Congrong Yu College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China Department of Agricultural and Biological Engineering, University of Florida, Gainesville FL 32611, USA College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China College of Hydrology and Water Conservancy and Water Resources, Hohai University, Nanjing 210098, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Laboratory experiments were conducted to determine the eﬀects of temperature (6, 25, and 40 °C) on GO ag- Nanoparticles gregation kinetics under diﬀerent combinations of ionic strength, cation type, humic acid (HA) concentration by Coagulation monitoring GO hydrodynamic radii and attachment eﬃciencies. The results showed that, without HA, tem- Stability + + 2+ perature increase promoted GO aggregation in both monovalent (Na and K ) and divalent (Ca ) solutions. Critical coagulation concentration This phenomenon might be caused by multiple processes
Colloids and Surfaces A: Physicochemical and Engineering Aspects – Elsevier
Published: Feb 5, 2018
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