Kuo Y.-C.Hsieh M.-Y.Hsu J.-P.2019-05-202019-05-20200210895647https://scholars.lib.ntu.edu.tw/handle/123456789/409371A theoretical investigation on the rate of deposition of biocolloids onto a rigid, charged surface is presented. Here, a biocolloid is modeled by a hard core covered by an ion-penetrable charge membrane, which contains dissociable functional groups. We show that, for a constant amount of fixed groups, the thicker the membrane the faster the rate of deposition grows. Also, a lower concentration of fixed groups, lower surface potential of the rigid surface, smaller equilibrium constant for the dissociation of functional groups K a, and lower bulk pH all lead to a faster rate of deposition. The rate of deposition for various valence of cations follows the order (3:1) > (1:1) > (2:1). The variation of the characteristic time of the deposition process (time required to reach roughly the saturation of surface coverage), t c, as a function of the pK a (from 4 to 6) reveals that the behavior of the rate of deposition is influenced significantly by pH ranged from 4 to 7. As pH increases, t c approaches a constant value for the values of pK a examined.journal article10.1021/jp01442472-s2.0-0037172114https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037172114&doi=10.1021%2fjp0144247&partnerID=40&md5=65fc47157f4ebee76dcf7deee50d3d51