Mechanistic Heteroaggregation of Gold Nanoparticles in a Wide Range of Solution Chemistry
作者： A. R. M. Nabiul Afrooz , Iftheker A. Khan , Saber M. Hussain , Navid B. Saleh
DOI: 10.1021/ES3032709
关键词:
摘要: Heteroaggregation behavior of gold nanospheres (AuNS) in presence pluronic acid (PA) modified single-walled carbon nanotubes (PA-SWNTs) was systematically studied for a wide range mono- and divalent (NaCl CaCl2) electrolyte conditions. Homoaggregation rates AuNS were also determined to delineate heteroaggregation mechanisms. Time resolved dynamic light scattering (DLS) employed monitor aggregation. The homoaggregation showed classical Derjaguin–Landau–Verwey–Overbeek (DLVO) type with defined reaction limited (RLCA) diffusion (DLCA) aggregation regimes. PA-SWNTs on the one hand no response increase. other hand, regime dependent response. At low or RLCA regime, significantly slower rates, compared its behavior; whereas enhanced observed DLCA regime. key mechanisms ...
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