Ion specificity of the zeta potential of alpha-alumina, and of the adsorption of p-hydroxybenzoate at the alpha-alumina-water interface

Journal of Colloid and Interface Science
Manash R DasSekh Mahiuddin

Abstract

The influence of inorganic anions (NO(3)(-), I(-), Br(-), Cl(-), SO(4)(2-), and S(2)O(3)(2-)) and of divalent cations (Ca(2+) and Mg(2+)) on the zeta potential and on the isoelectric point of alpha-alumina in aqueous medium has been studied. The effect of the anions is highly ion specific even at salt concentrations as low as 5x10(-4) M. This unexpected finding is in line with a recent report [Böstrom et al., J. Chem. Phys. 128 (2008) 135104]. It is also in agreement with an earlier theoretical prediction [B.W. Ninham, V.V. Yaminsky, Langmuir 13 (1997) 2097]. The results are consistent with the classical Hofmeister series, except for the case of NO(3)(-). Divalent anions (SO(4)(2-) and S(2)O(3)(2-)) decrease the magnitude of the zeta potential of alpha-alumina in aqueous medium, more precisely; S(2)O(3)(2-) produced large negative zeta potential (approximately -12 to -47 mV) within the pH range of the study without the isoelectric point (IEP) of alpha-alumina. However, the SO(4)(2-) decreased the zeta potential of alpha-alumina of different magnitudes (maximum approximately 25 mV at both ends of the experimental acidic and basic pH scale) with a minor shift of the IEP (approximately 0.5 unit) toward lower pH. Ca(2+) and Mg(2+) ...Continue Reading

References

Nov 1, 1976·CRC Critical Reviews in Microbiology·J M Lynch
Dec 16, 1998·Journal of Colloid and Interface Science·N BhosleG G Geesey
May 4, 2000·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·K D Dobson, A J McQuillan
Aug 16, 2000·Journal of Colloid and Interface Science·H Wijnja, C P Schulthess
Oct 10, 2001·Advances in Colloid and Interface Science·A R HindA McKinnon
Mar 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Stephen B JohnsonGordon E Brown
Jun 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Ryan J KershnerMichael J Cima
Jun 30, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Stephen B JohnsonGordon E Brown
Feb 10, 2006·Journal of Colloid and Interface Science·Marek Kosmulski
Sep 26, 2006·Journal of Colloid and Interface Science·Yanxiao ChenGongying Wang
Nov 14, 2006·Journal of Colloid and Interface Science·Manash R Das, Sekh Mahiuddin
May 19, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Seunghun Kang, Baoshan Xing
Sep 4, 2007·Journal of Colloid and Interface Science·Xiaomiao Hou, Yan Fang
Sep 11, 2007·Journal of Colloid and Interface Science·Rasoul RahnemaieWillem H van Riemsdijk
Oct 2, 2007·Journal of Colloid and Interface Science·Jayanta M BorahSekh Mahiuddin
Mar 8, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·E R A LimaF W Tavares
Jul 18, 2009·Journal of Colloid and Interface Science·Mai PhamThanh H Nguyen
Oct 17, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Andrea SalisMaura Monduzzi
Jan 27, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Drew F Parsons, Barry W Ninham

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Citations

Jun 16, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Jayanta M BorahBarry W Ninham
Jun 15, 2011·Physical Chemistry Chemical Physics : PCCP·Drew F ParsonsBarry W Ninham
Aug 2, 2013·Journal of Dispersion Science and Technology·Vuk Uskoković
Apr 12, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Vivian MerkStephan Barcikowski
Sep 28, 2010·Journal of Colloid and Interface Science·Marek Kosmulski
Jan 16, 2015·ACS Applied Materials & Interfaces·Thomas M McCoyRico F Tabor
Apr 10, 2015·The Journal of Chemical Physics·Drew F Parsons, Andrea Salis
Mar 8, 2014·Environmental Technology·Chunguang MiaoXiangqin Wang
Nov 7, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Luca MeddaAndrea Salis
Nov 13, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·K M S JuhlS L S Stipp
May 28, 2021·Scientific Reports·Manpreet KaurTadaaki Nagao
May 30, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Weiyan YuWanguo Hou
Jul 7, 2020·Journal of the American Chemical Society·Stefan M PiontekEric Borguet

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