title: Porous nano-structured micro-granules from silica-milk bi-colloidal suspension: Synthesis and characterization.
abstract: Synthesis and characterization of nano-structured porous granules, with fairly defined morphology and porosity, is crucial because such granules are widely utilized for various technological applications. However, an easy, one-step, economic synthesis protocol for large scale production is extremely desirable. In the present work, we have reported the synthesis and characterization of the nano-structured micro-granules using aerosol drying of bi-colloidal suspension of nano-silica and milk. Removal of soft organic component from the granules results in formation of meso and macro pores with moderate specific surface area. Granule morphology and porosity depends strongly on the concentration ratio of the individual components in the drying aerosol as well as the interaction between them.
authors.affiliation: Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
authors.forename: Priyanka
authors.initials: P
authors.lastname: Biswas
authors.affiliation: Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India. Electronic address: debasis@barc.gov.in.
authors.forename: D
authors.initials: D
authors.lastname: Sen
authors.affiliation: Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
authors.forename: S
authors.initials: S
authors.lastname: Mazumder
authors.affiliation: Nuclear Agriculture & Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
authors.forename: J S
authors.initials: JS
authors.lastname: Melo
authors.affiliation: Glass and Advanced Materials Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
authors.forename: C B
authors.initials: CB
authors.lastname: Basak
authors.affiliation: Materials Group, Bhabha Atomic Research Centre, Mumbai, 400085, India.
authors.forename: Kinshuk
authors.initials: K
authors.lastname: Dasgupta
mesh_terms: D000336:Aerosols; D000818:Animals; D003102:Colloids; D008892:Milk / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D013535:Suspensions
chemical_list: D000336:Aerosols; D003102:Colloids; D013535:Suspensions; D012822:Silicon Dioxide
keywords: Bi-colloids; Porous granules; SANS; SAXS; SEM; Spray drying