Accession Number:

AD1100908

Title:

In-situ Atomic Scale Studies of Nanoparticle-Solution Interface Processes

Descriptive Note:

Technical Report

Corporate Author:

Northwestern University Evanston United States

Personal Author(s):

Report Date:

2017-12-01

Pagination or Media Count:

308.0

Abstract:

While synthesis and transformation processes to produce monodisperse nanoparticles are empirically well-developed, the pathways for these reactions as well as the exact role of synthetic agents and binding characteristics of surface moieties remain poorly understood. This lack of understanding is primarily due to the paucity of information about nanoparticle structural evolution at the atomic scale and an inability to characterize the nanoparticle-solution interface. This thesis addresses such nanoscale processes through use of an approach which combines in-situ X-ray atomic scale characterization XAFS and XRF with nanoscale morphological parameters derived from electron microscopy and SAXS. These techniques and approach provide significant insight into the chemical pathways that define bimetallic nanoparticle growth and establish a methodology for characterizing nanoparticle structure both of the inorganic core and molecular species coordinated to its surface at the atomic scale.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE