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Title: Expanding the Schulze-Hardy Rule and the Hofmeister Series to Nanometer-Scaled Hydrophilic Macroions

Journal Article · · Chemistry - A European Journal

Abstract The Schulze–Hardy rule is a well‐established observation in colloid science (can be derived from the DLVO theory) that demonstrates the relationship between the critical coagulation concentration (CCC) of colloids and the valence of extra counterionic electrolytes ( z ), with a simple mathematical relationship of CCC≈ z −6 . Here the Schulze–Hardy Rule is expanded to much smaller, nano‐scaled soluble macroions in aqueous solution, by examining the stability of the macroions in the presence of additional electrolytes. The CCC values of the macroions follow the general trend of CCC≈ z − n but the n value is significantly dependent on the surface charge density of the macroions, ranging from n =2 at very low surface charge density to n =6 at a high surface charge density. In addition, different cations with the same valence showed clear different impacts on the CCC values, with an interesting trend being connected to the Hofmeister series originally discovered in protein solutions.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Materials Science of Actinides (MSA)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001089
OSTI ID:
1470427
Alternate ID(s):
OSTI ID: 1429931
Journal Information:
Chemistry - A European Journal, Vol. 24, Issue 21; Related Information: MSA partners with University of Notre Dame (lead); University of California, Davis; Florida State University; George Washington University; University of Michigan; University of Minnesota; Oak Ridge National Laboratory; Oregon state University; Rensselaer Polytechnic Institute; Savannah River National Laboratory; ISSN 0947-6539
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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  • Elzbieciak-Wodka, Magdalena; Popescu, Mihail N.; Ruiz-Cabello, F. Javier Montes
  • The Journal of Chemical Physics, Vol. 140, Issue 10 https://doi.org/10.1063/1.4867541
journal March 2014
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