期刊
ADVANCES IN COLLOID AND INTERFACE SCIENCE
卷 152, 期 1-2, 页码 14-25出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cis.2009.08.003
关键词
Point of zero charge; Isoelectric point; Inert electrolyte; Surface charge; Electrokinetic potential; Alumina; Titania; Silica
The values of PZC and IEP of metal oxides reported in the literature are affected by the choice of the specimens to be studied. The specimens, which have PZC and IEP similar to the recommended value, are preferred by the scientists. The biased choice leads to accumulation of results for a few specimens, and the other specimens are seldom studied or they are subjected to washing procedures aimed at shift of the original IEP toward the recommended value. Taking the average or median of all published PZC and IEP for certain oxide as the recommended value leads to substantiation of previously published results due to overrepresentation of certain specimens in the sample. (C) 2009 Elsevier B.V. All rights reserved.
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