Morphological stability of oxygen- and nitrogen-covered Ru(112¯1)

Shen, Quantong; Chen, Wenhua; Wang, Hao; Bartynski, Robert A.

doi:10.1063/1.4819130

Title: Morphological stability of oxygen- and nitrogen-covered Ru(112¯1)

Full Record
Other Related Research

Abstract

Morphological stability of the atomically rough Ru(112¯1) surface upon annealing in NO₂, O₂, and NH₃ at elevated temperatures has been studied using scanning tunneling microscopy (STM), low energy electron diffraction (LEED), and Auger electron spectroscopy. The surface becomes fully faceted and covered by oxygen after annealing at T ≥ 600 K in NO₂ (10^–8 Torr) or O₂ (10^–6 Torr). The LEED and STM studies reveal that the faceted surface consists of nanoscale ridges, exposing four facets (101¯1), (011¯1), (101¯0), and (011¯0) on the ridges, and the ridge size grows as the annealing temperature increases. Details of the facet structures and reconstructions have been observed. However, no evidence is found for faceting of Ru(112¯1) to occur upon annealing in NH₃. As a result, our findings should be important for development of Ru-based catalysts under oxygen-rich conditions.

Authors:

Shen, Quantong ^[1]; Chen, Wenhua ^[1]; Wang, Hao ^[1]; Bartynski, Robert A. ^[1]

Rutgers, The State Univ. of New Jersey, Piscataway, NJ (United States)

Publication Date:: Wed Aug 28 00:00:00 EDT 2013

Research Org.:: Rutgers Univ., Piscataway, NJ (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1349423

Grant/Contract Number:: FG02-93ER14331

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Chemical Physics

Additional Journal Information:: Journal Volume: 139; Journal Issue: 8; Journal ID: ISSN 0021-9606

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; scanning tunneling microscopy; single-crystal surfaces; structure sensitivity; carbon-monoxide; shape changes; IR surfaces; oxidation; adsorption; CO; nanoparticles

Citation Formats


                    Shen, Quantong, Chen, Wenhua, Wang, Hao, and Bartynski, Robert A. Morphological stability of oxygen- and nitrogen-covered Ru(112¯1).  United States: N. p., 2013. 
Web.  doi:10.1063/1.4819130.

Copy to clipboard


                    Shen, Quantong, Chen, Wenhua, Wang, Hao, & Bartynski, Robert A. Morphological stability of oxygen- and nitrogen-covered Ru(112¯1).  United States.  https://doi.org/10.1063/1.4819130

Copy to clipboard


                    Shen, Quantong, Chen, Wenhua, Wang, Hao, and Bartynski, Robert A. Wed .  
"Morphological stability of oxygen- and nitrogen-covered Ru(112¯1)".  United States.  https://doi.org/10.1063/1.4819130.  https://www.osti.gov/servlets/purl/1349423.

Copy to clipboard


                    
@article{osti_1349423,

  title        = {Morphological stability of oxygen- and nitrogen-covered Ru(112¯1)},

  author       = {Shen, Quantong and Chen, Wenhua and Wang, Hao and Bartynski, Robert A.},

  abstractNote = {Morphological stability of the atomically rough Ru(112¯1) surface upon annealing in NO2, O2, and NH3 at elevated temperatures has been studied using scanning tunneling microscopy (STM), low energy electron diffraction (LEED), and Auger electron spectroscopy. The surface becomes fully faceted and covered by oxygen after annealing at T ≥ 600 K in NO2 (10–8 Torr) or O2 (10–6 Torr). The LEED and STM studies reveal that the faceted surface consists of nanoscale ridges, exposing four facets (101¯1), (011¯1), (101¯0), and (011¯0) on the ridges, and the ridge size grows as the annealing temperature increases. Details of the facet structures and reconstructions have been observed. However, no evidence is found for faceting of Ru(112¯1) to occur upon annealing in NH3. As a result, our findings should be important for development of Ru-based catalysts under oxygen-rich conditions.},

  doi          = {10.1063/1.4819130},

  journal      = {Journal of Chemical Physics},

  number       = 8,

  volume       = 139,

  place        = {United States},

  year         = {Wed Aug 28 00:00:00 EDT 2013},

  month        = {Wed Aug 28 00:00:00 EDT 2013}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1063/1.4819130

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 3 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Oxygen-induced nano-faceting of Re( 11 2 ¯ 1 )

Journal Article Wang, Hao ; Chen, Wenhua ; Bartynski, Robert A. - Surface Science

We report results from a detailed study of oxygen-induced faceting of Re(112¯1) using low energy electron diffraction (LEED). Depending on conditions for reaction with oxygen, the initially planar Re(112¯1) surface evolves sequentially to form zigzag chains consisting of (011¯0) and (101¯0) facets that coexist with stepped (112¯1) plateaus; three-sided pyramids exposing (011¯0), (101¯0) and (336¯4) facets; a faceted surface with five facets including (011¯0), (101¯0), (112¯2)-(2 × 1), (011¯1)-(2 × 1) and (101¯1)-(2 × 1); and four-sided pyramids exposing {011¯0} and {011¯1}-(2 × 1) facets. We have observed reversible morphological transitions between the faceted surfaces and discovered that each intermediatemore »« less
Cited by 2
https://doi.org/10.1016/j.susc.2014.12.015

Full Text Available
Nitrogen-induced reconstruction and faceting of Re(112{sup ¯}1)

Journal Article Wang, Hao ; Chen, Wenhua ; Bartynski, Robert A. ; ... - Journal of Chemical Physics

The surface morphology of Re(112{sup ¯}1), tailored on the nanometer scale by kinetic control of nitrogen, has been investigated using low energy electron diffraction, scanning tunneling microscopy, Auger electron spectroscopy, and density functional theory (DFT) in combination with the ab initio atomistic thermodynamics approach. Experiments show that when exposing to NH{sub 3} (>0.5 L) at 300 K followed by annealing in ultra-high vacuum at 700 K or 900 K, the initially planar Re(112{sup ¯}1) surface becomes (2 × 1) reconstructed or partially faceted, respectively. Upon annealing in 100 L NH{sub 3} at 900 K, Re(112{sup ¯}1) becomes fully faceted andmore »« less
https://doi.org/10.1063/1.4861046
Coexistence of {l_brace}011{r_brace} facets with {l_brace}112{r_brace} facets on W(111) induced by ultrathin films of Pd

Journal Article Nien, C ; Madey, T E ; Tai, Y W ; ... - Physical Review, B: Condensed Matter

The faceting of Pd/W(111) to form nanoscale three-sided pyramids with {l_brace}011{r_brace} facets has been observed using a scanning tunneling microscope (STM). In contrast to the well-documented {l_brace}112{r_brace} faceting, which can transform the entire Pd/W(111) surface to a morphology composed completely of pyramidal {l_brace}112{r_brace} facets, the {l_brace}011{r_brace} faceting of Pd/W(111) occurs in coexistence with {l_brace}112{r_brace} faceting upon prolonged annealing. While {l_brace}112{r_brace} facets are found to grow in size (ranging from {approximately}3 to 15 nm) with increasing annealing temperatures, the dimensions of {l_brace}011{r_brace} facets appear to be limited to {approximately}2.5 nm. The coexistence of two types of pyramidal facets is consistent withmore »« less
https://doi.org/10.1103/PhysRevB.59.10335
Growth of gold nanoparticles on faceted O/Ru(11–20) nanotemplate

Journal Article Shen, Quantong ; Chen, Wenhua ; Bartynski, Robert A. - Surface Science

The growth of gold nanoparticles on the oxygen-covered faceted Ru(11-20) surface is investigated by scanning tunneling microscopy (STM), low energy electron diffraction (LEED), and Auger electron spectroscopy (AES). By depositing gold onto the faceted surface held at room temperature, gold nanoparticles with regular spacings are fabricated. Gold nanoparticles are found to nucleate preferentially within valleys of the faceted surface. As a result, our work demonstrates that the faceted metal surfaces are promising templates for the growth of metal nanoparticles.
https://doi.org/10.1016/j.susc.2011.05.011
Morphological evolution in oxygen-induced faceting of Re(1231)

Journal Article Hao, Wang ; Wenhua, Chen ; Madey, Theodore E - Physical Review. B, Condensed Matter and Materials Physics

We have studied oxygen-induced faceting of the atomically rough Re(1231) surface by means of Auger electron spectroscopy, low energy electron diffraction, and scanning tunneling microscopy (STM). In contrast to previous faceting studies on other refractory metal surfaces, where simple morphologies of the facets were reported, we find a coverage-dependent morphological evolution of the facets ranging from long sawtooth ridges to complex structures exposing four different facets. The faceting occurs only when oxygen coverage ({theta}) exceeds 0.5 monolayer (ML) and the surface is annealed at {>=}700 K. At low oxygen coverage (0.5 ML{<=}{theta}<0.7 ML), the O/Re(1231) surface becomes partially faceted uponmore »« less
https://doi.org/10.1103/PHYSREVB.74.205426

Similar Records