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Title: Nanoporous Gold: Understanding the Origin of the Reactivity of a 21st Century Catalyst Made by Pre-Columbian Technology

Abstract

Nanoporous gold (np-Au), a three-dimensional nanoporous bulk material, is made by selective corrosion of Ag from Ag–Au alloys, a technique already applied by the pre-Columbian cultures of South America. Nanoporous gold is actually a Au-rich Ag–Au alloy which, specifically the Ag0.03Au0.97 composition, combines high reactivity and selectivity for a wide variety of oxidation reactions, from simple CO oxidation to complex oxygen-assisted coupling reactions. Its catalytic reactivity is surprising because np-Au is a nonsupported Au catalyst with relatively large feature sizes on the order of tens of nanometers, thus breaking the generally accepted notion that gold must be in the form of small particles (about a few nanometers) to be an active catalyst. The ease of sample preparation in combination with high reactivity, selectivity, and long-term stability suggests that nanoporous gold has the potential to bring Au catalysis closer to practical applications. We provide a critical review of the current understanding of the origin of the high catalytic activity of nanoporous gold in context of morphology and surface composition in this perspective.

Authors:
 [1];  [1];  [2];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Harvard Univ., Cambridge, MA (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1386056
Grant/Contract Number:  
SC0012573; AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 5; Journal Issue: 11; Related Information: IMASC partners with Harvard University (lead); Fritz Haber Institute; Lawrence Berkeley National Laboratory; Lawrence Livermore National Laboratory; University of Kansas; Tufts University; Journal ID: ISSN 2155-5435
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Alcohols; Gold; Oxygen; Oxidation; Nanoporous materials; Catalysis (heterogeneous); Mesostructured materials; Materials and chemistry by design; Synthesis (novel materials)

Citation Formats

Biener, Juergen, Biener, Monika M., Madix, Robert J., and Friend, Cynthia M.. Nanoporous Gold: Understanding the Origin of the Reactivity of a 21st Century Catalyst Made by Pre-Columbian Technology. United States: N. p., 2015. Web. doi:10.1021/acscatal.5b01586.
Biener, Juergen, Biener, Monika M., Madix, Robert J., & Friend, Cynthia M.. Nanoporous Gold: Understanding the Origin of the Reactivity of a 21st Century Catalyst Made by Pre-Columbian Technology. United States. https://doi.org/10.1021/acscatal.5b01586
Biener, Juergen, Biener, Monika M., Madix, Robert J., and Friend, Cynthia M.. Fri . "Nanoporous Gold: Understanding the Origin of the Reactivity of a 21st Century Catalyst Made by Pre-Columbian Technology". United States. https://doi.org/10.1021/acscatal.5b01586. https://www.osti.gov/servlets/purl/1386056.
@article{osti_1386056,
title = {Nanoporous Gold: Understanding the Origin of the Reactivity of a 21st Century Catalyst Made by Pre-Columbian Technology},
author = {Biener, Juergen and Biener, Monika M. and Madix, Robert J. and Friend, Cynthia M.},
abstractNote = {Nanoporous gold (np-Au), a three-dimensional nanoporous bulk material, is made by selective corrosion of Ag from Ag–Au alloys, a technique already applied by the pre-Columbian cultures of South America. Nanoporous gold is actually a Au-rich Ag–Au alloy which, specifically the Ag0.03Au0.97 composition, combines high reactivity and selectivity for a wide variety of oxidation reactions, from simple CO oxidation to complex oxygen-assisted coupling reactions. Its catalytic reactivity is surprising because np-Au is a nonsupported Au catalyst with relatively large feature sizes on the order of tens of nanometers, thus breaking the generally accepted notion that gold must be in the form of small particles (about a few nanometers) to be an active catalyst. The ease of sample preparation in combination with high reactivity, selectivity, and long-term stability suggests that nanoporous gold has the potential to bring Au catalysis closer to practical applications. We provide a critical review of the current understanding of the origin of the high catalytic activity of nanoporous gold in context of morphology and surface composition in this perspective.},
doi = {10.1021/acscatal.5b01586},
journal = {ACS Catalysis},
number = 11,
volume = 5,
place = {United States},
year = {Fri Sep 25 00:00:00 EDT 2015},
month = {Fri Sep 25 00:00:00 EDT 2015}
}

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  • The Journal of Chemical Physics, Vol. 151, Issue 24
  • DOI: 10.1063/1.5130649

Dealloyed Nanoporous Gold Catalysts: From Macroscopic Foams to Nanoparticulate Architectures
journal, May 2018


A nanofluidic device for parallel single nanoparticle catalysis in solution
journal, September 2019


Toward digitally controlled catalyst architectures: Hierarchical nanoporous gold via 3D printing
journal, August 2018


Chemoselective Aerobic Cross-Dehydrogenative Coupling of Terminal Alkynes with Hydrosilanes by a Nanoporous Gold Catalyst
journal, October 2018

  • Kavthe, Rahul D.; Ishikawa, Yoshifumi; Kusuma, Indra
  • Chemistry - A European Journal, Vol. 24, Issue 59
  • DOI: 10.1002/chem.201803874

Preparation of Ordered Mesoporous Au using Double Gyroid Mesoporous Silica KIT-6 via a Seed-Mediated Growth Process
journal, November 2018

  • Shimasaki, Yuta; Kitahara, Masaki; Shoji, Miho
  • Chemistry - An Asian Journal, Vol. 13, Issue 24
  • DOI: 10.1002/asia.201801455

In-Situ TEM Study of a Nanoporous Ni–Co Catalyst Used for the Dry Reforming of Methane
journal, October 2017

  • Fujita, Takeshi; Higuchi, Kimitaka; Yamamoto, Yuta
  • Metals, Vol. 7, Issue 10
  • DOI: 10.3390/met7100406

A nanofluidic device for parallel single nanoparticle catalysis in solution
journal, September 2019


Hierarchical nanoporous metals as a path toward the ultimate three-dimensional functionality
journal, October 2017


Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes
journal, November 2019