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Title: Decoupling the Electronic and Geometric Parameters of Metal Nanocatalysts

Abstract

Central in many industrial processes (e.g., petroleum refining) and the realization of new energy platforms (e.g., fuel cells and biomass conversion) is heterogeneous catalysis. The performance of a catalyst is governed by interplay between electronic and geometric factors, but controlling these parameters to achieve efficient catalysis remains a grand challenge. The overall goal of this project was to decouple the electronic and geometric parameters of nanoscale metal catalysts for independent manipulation through the design and use of new architecturally controlled bimetallic nanocrystals. Specifically, shape-controlled core@shell nanocrystals were studied as catalysts. The binary composition of these structures provided a means of electronic control while the shape of the nanocrystals provided geometric control. Through a series of experiments with nanocrystals of different shapes and bimetallic compositions, the electronic and geometric parameters of such metal nanocatalysts were effectively decoupled for independent manipulation of catalyst performance. These concepts were applied toward new nanocatalysts for semihydrogenation, formic acid electrooxidation and for the oxygen reduction reaction. Ultimately, with the development of new synthetic strategies toward bimetallic nanocrystals, this research has advanced the design and synthesis of bimetallic nanocrystals as catalysts for diverse chemical transformations.

Authors:
Publication Date:
Research Org.:
Indiana Univ., Bloomington, IN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
OSTI Identifier:
1547311
Report Number(s):
DOE-IU-10489-13
DOE Contract Number:  
SC0010489
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; catalysis; catalysts; oxygen reduction reaction; electrocatalyst; nanoparticles; nanomaterials

Citation Formats

Skrabalak, Sara. Decoupling the Electronic and Geometric Parameters of Metal Nanocatalysts. United States: N. p., 2019. Web. doi:10.2172/1547311.
Skrabalak, Sara. Decoupling the Electronic and Geometric Parameters of Metal Nanocatalysts. United States. doi:10.2172/1547311.
Skrabalak, Sara. Wed . "Decoupling the Electronic and Geometric Parameters of Metal Nanocatalysts". United States. doi:10.2172/1547311. https://www.osti.gov/servlets/purl/1547311.
@article{osti_1547311,
title = {Decoupling the Electronic and Geometric Parameters of Metal Nanocatalysts},
author = {Skrabalak, Sara},
abstractNote = {Central in many industrial processes (e.g., petroleum refining) and the realization of new energy platforms (e.g., fuel cells and biomass conversion) is heterogeneous catalysis. The performance of a catalyst is governed by interplay between electronic and geometric factors, but controlling these parameters to achieve efficient catalysis remains a grand challenge. The overall goal of this project was to decouple the electronic and geometric parameters of nanoscale metal catalysts for independent manipulation through the design and use of new architecturally controlled bimetallic nanocrystals. Specifically, shape-controlled core@shell nanocrystals were studied as catalysts. The binary composition of these structures provided a means of electronic control while the shape of the nanocrystals provided geometric control. Through a series of experiments with nanocrystals of different shapes and bimetallic compositions, the electronic and geometric parameters of such metal nanocatalysts were effectively decoupled for independent manipulation of catalyst performance. These concepts were applied toward new nanocatalysts for semihydrogenation, formic acid electrooxidation and for the oxygen reduction reaction. Ultimately, with the development of new synthetic strategies toward bimetallic nanocrystals, this research has advanced the design and synthesis of bimetallic nanocrystals as catalysts for diverse chemical transformations.},
doi = {10.2172/1547311},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {8}
}