教師資料查詢 | 類別: 期刊論文 | 教師: 曾琇瑱 Tseng Shio-jenn (瀏覽個人網頁)

標題:Electrophoresis of pH-Regulated Particles in the Presence of Multiple Ionic Species
學年
學期
出版(發表)日期2014/02/01
作品名稱Electrophoresis of pH-Regulated Particles in the Presence of Multiple Ionic Species
作品名稱(其他語言)
著者Hsu, Chien; Lee, Duu-Jong; Hsu, Jyh-Ping; Wang, Nan; Tseng, Shiojenn
單位淡江大學數學學系
出版者Hoboken: Jossey Bass, Ed. & Pub.
著錄名稱、卷期、頁數AIChE Journal 60(2), pp.451-458
摘要An electrophoresis model taking account of the pH-regulated nature of particles and the presence of multiple ionic species is proposed for arbitrary surface potential and double-layer thickness. It successfully simulated the electrophoretic behavior of Fe3O4 nanoparticles in an aqueous NaCl solution with pH adjusted by HCl and NaOH. The estimated zeta potential is compared with those from the conventional models, Smoluchowski's, Hückel's, and Henry's formulas. Due to the violation of the assumption of low and constant surface potential, these formulas yielded appreciable deviations (e.g., 23–30 mV at pH 9). With the surface charge density measured by titration and the zeta potential by electrophoresis, the true surface potential is estimated through a triple-layer model. The estimated true potential is typically 1.5–10 times larger than the zeta potential, implying that using the latter in relevant calculations (e.g., stability and critical coagulation concentration) might yield appreciable deviation.
關鍵字electrophoresis;pH-regulated particle;multiple ionic species;triple-layer model
語言英文
ISSN1547-5905
期刊性質國外
收錄於
產學合作
通訊作者Hsu, Jyh-Ping
審稿制度
國別美國
公開徵稿
出版型式電子版
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