FisMat2017 - Submission - View

Abstract's title: Following crystallization of ZnS nanostructures in confined space by in-situ continuous flow miniemulsion process
Submitting author: Nicola Dengo
Affiliation: University of Padova
Affiliation Address: Università degli Studi di Padova, Dipartimento di Scienze Chimiche, via Marzolo, 1 35131- Padova Italia
Country: Italy
Oral presentation/Poster (Author's request): Oral presentation
Other authors and affiliations: Barbara Sartori (Institute for Inorganic Chemistry, Graz University of Technology, Graz, Austria), Christoph Seitz (Institute of Physical Chemistry, Justus-Liebig-Universität Giessen, Giessen, Germany), Bernd Smarsly (Institute of Physical Chemistry, Justus-Liebig-Universität Giessen, Giessen, Germany), Heinz Amenitsch (Institute for Inorganic Chemistry, Graz University of Technology, Graz, Austria), Silvia Gross (Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova, Italy and ICMATE-CNR and INSTM, UdR Padova, Padova, Italy)
Abstract

Miniemulsion is an innovative method to obtain, already at room temperature, crystalline inorganic materials by exploiting a reaction occurring inside the confined space of independent nanometric-sized droplets. Despite being a promising technique, to the best of our knowledge no systematic study on the crystallization phenomena under miniemulsion conditions has been carried out yet. In this regard, we performed by Small-Angle X-ray Scattering (SAXS) an in-situ and time-resolved investigation of the crystallization process of ZnS synthetized by inverse miniemulsion [1]. The experimental setup for this experiment was composed of a reactor equipped with a probe-type sonicator, connected with a continuous flow equipment. While the reaction was carried out, the reaction mixture was continuously flowed thought a homemade measurement cell mounted in the SAXS beamline of the synchrotron facility Elettra (Trieste), to follow the structural and morphological evolution of the system in real-time. The obtained SAXS profiles were then fitted in order to get an insight of the dimension and the number of the formed particles with time. Moreover, the same setup was employed to investigate the miniemulsion without the presence of the ZnS precursors, and the effect of the surfactant concentration on the synthesis.