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Title: Oxidation and reduction under cover: Chemistry at the confined space between ultra-thin nanoporous silicates and Ru(0001)

Abstract

The oxidation and reduction of Ru(0001) surfaces at the confined space between two-dimensional nanoporous silica frameworks and Ru(0001) have been investigated using synchrotron-based ambient pressure X-ray photoelectron spectroscopy (AP-XPS). The porous nature of the frameworks and the weak interaction between the silica and the ruthenium substrate allow oxygen and hydrogen molecules to go through the nanopores and react with the metal at the interface between the silica framework and the metal surface. In this work, three types of two-dimensional silica frameworks have been used to study their influence in the oxidation and reduction of the ruthenium surface at elevated pressures and temperatures. These frameworks are bilayer silica (0.5 nm thick), bilayer aluminosilicate (0.5 nm thick), and zeolite MFI nanosheets (3 nm thick). It is found that the silica frameworks stay essentially intact under these conditions, but they strongly affect the oxidation of ruthenium, with the 0.5 nm thick aluminosilicate bilayer completely inhibiting the oxidation. Furthermore, the latter is believed to be related to the lower chemisorbed oxygen content arising from electrostatic interactions between the negatively charged aluminosilicate framework and the Ru(0001) substrate.

Authors:
 [1];  [1];  [2];  [2];  [2];  [2];  [2];  [3];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. National Synchrotron Light Source II, Upton, NY (United States)
  3. Univ. of Minnesota, Minneapolis, MN (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Gas Separations Relevant to Clean Energy Technologies (CGS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1245397
Report Number(s):
BNL-111991-2016-JA
Journal ID: ISSN 1932-7447; KC0403020
Grant/Contract Number:  
SC00112704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 67; Journal Issue: 10; Journal ID: ISSN 1932-7447
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

J. Anibal Boscoboinik, Zhong, Jian -Qiang, Kestell, John, Waluyo, Iradwikanari, Wilkins, Stuart, Mazzoli, Claudio, Barbour, Andi, Kaznatcheev, Konstantine, Shete, Meere, and Tsapatsis, Michael. Oxidation and reduction under cover: Chemistry at the confined space between ultra-thin nanoporous silicates and Ru(0001). United States: N. p., 2016. Web. doi:10.1021/acs.jpcc.6b02851.
J. Anibal Boscoboinik, Zhong, Jian -Qiang, Kestell, John, Waluyo, Iradwikanari, Wilkins, Stuart, Mazzoli, Claudio, Barbour, Andi, Kaznatcheev, Konstantine, Shete, Meere, & Tsapatsis, Michael. Oxidation and reduction under cover: Chemistry at the confined space between ultra-thin nanoporous silicates and Ru(0001). United States. https://doi.org/10.1021/acs.jpcc.6b02851
J. Anibal Boscoboinik, Zhong, Jian -Qiang, Kestell, John, Waluyo, Iradwikanari, Wilkins, Stuart, Mazzoli, Claudio, Barbour, Andi, Kaznatcheev, Konstantine, Shete, Meere, and Tsapatsis, Michael. 2016. "Oxidation and reduction under cover: Chemistry at the confined space between ultra-thin nanoporous silicates and Ru(0001)". United States. https://doi.org/10.1021/acs.jpcc.6b02851. https://www.osti.gov/servlets/purl/1245397.
@article{osti_1245397,
title = {Oxidation and reduction under cover: Chemistry at the confined space between ultra-thin nanoporous silicates and Ru(0001)},
author = {J. Anibal Boscoboinik and Zhong, Jian -Qiang and Kestell, John and Waluyo, Iradwikanari and Wilkins, Stuart and Mazzoli, Claudio and Barbour, Andi and Kaznatcheev, Konstantine and Shete, Meere and Tsapatsis, Michael},
abstractNote = {The oxidation and reduction of Ru(0001) surfaces at the confined space between two-dimensional nanoporous silica frameworks and Ru(0001) have been investigated using synchrotron-based ambient pressure X-ray photoelectron spectroscopy (AP-XPS). The porous nature of the frameworks and the weak interaction between the silica and the ruthenium substrate allow oxygen and hydrogen molecules to go through the nanopores and react with the metal at the interface between the silica framework and the metal surface. In this work, three types of two-dimensional silica frameworks have been used to study their influence in the oxidation and reduction of the ruthenium surface at elevated pressures and temperatures. These frameworks are bilayer silica (0.5 nm thick), bilayer aluminosilicate (0.5 nm thick), and zeolite MFI nanosheets (3 nm thick). It is found that the silica frameworks stay essentially intact under these conditions, but they strongly affect the oxidation of ruthenium, with the 0.5 nm thick aluminosilicate bilayer completely inhibiting the oxidation. Furthermore, the latter is believed to be related to the lower chemisorbed oxygen content arising from electrostatic interactions between the negatively charged aluminosilicate framework and the Ru(0001) substrate.},
doi = {10.1021/acs.jpcc.6b02851},
url = {https://www.osti.gov/biblio/1245397}, journal = {Journal of Physical Chemistry. C},
issn = {1932-7447},
number = 10,
volume = 67,
place = {United States},
year = {Wed Mar 23 00:00:00 EDT 2016},
month = {Wed Mar 23 00:00:00 EDT 2016}
}

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Cited by: 26 works
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Works referenced in this record:

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Works referencing / citing this record:

Ionization‐Facilitated Formation of 2D (Alumino)Silicate–Noble Gas Clathrate Compounds
journal, March 2019


Synchrotron-based ambient pressure X-ray photoelectron spectroscopy of hydrogen and helium
journal, February 2018


Chemistry in confined space through the eyes of surface science—2D porous materials
journal, December 2018


Energy Level Shifts at the Silica/Ru(0001) Heterojunction Driven by Surface and Interface Dipoles
journal, September 2016


X-ray microscopy
journal, July 1965