Narrowing size distribution widths of small α-Al2O3 nanoparticles by addition of large nanoparticles in coagulation separation. Issue 6 (15th April 2017)

• Record Type: Journal Article
• Authors: Pu, Sanxu; Li, Lu; Yuan, Yuan; Cao, Wenbin; Zhao, Libin; Ge, Lin; Li, Jiangong
• Is Part Of: Ceramics international. Volume 43:Issue 6(2017)
• Page Start: 4841
• Page End: 4845
• Publication Date: 2017-04-15
• Subjects: Nanoparticles -- Alumina -- Size distribution -- Size-selective separations; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.12.065
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: α -Al2 O3 nanoparticles separated by fractionated coagulation still have broad size distributions which limit their wider applications. By adding 20-time mass of large α -Al2 O3 (40.5 nm) into α -Al2 O3 nanoparticles to be separated in coagulation separation, the average size of separated α -Al2 O3 nanoparticles decrease from 6.6 nm without addition of large α -Al2 O3 NPs to 4.4 nm, and the size distribution changes from 3–10 nm without addition of large α -Al2 O3 NPs to 3–6 nm. With increasing amount of large α -Al2 O3 NPs added, separated α -Al2 O3 NPs exhibit smaller average sizes and narrower size distribution widths at the same separation concentrations. This approach may be applied to narrow size distribution widths in large-scale size-selective separations of other nanoparticles.