Gold Dispersion and Activation on the Basal Plane of Single-Layer MoS2

Cindy S. Merida; Duy Le; Elena M. Echeverría; Ariana E. Nguyen; Takat B Rawal; Sahar Naghibi Alvillar; Viktor Kandyba; Abdullah Al-Mahboob; Yaroslav B. Losovyj; Khabiboulakh Katsiev; Michael D. Valentin; Chun-Yu Huang; Michael J. Gomez; I-Hsi Lu; Alison Guan; Alexei Barinov; Talat S Rahman; Peter A. Dowben; Ludwig Bartels

doi:10.1021/acs.jpcc.7b07632

Gold Dispersion and Activation on the Basal Plane of Single-Layer MoS2

Cindy S. Merida, Duy Le, Elena M. Echeverría, Ariana E. Nguyen, Takat B Rawal, Sahar Naghibi Alvillar, Viktor Kandyba, Abdullah Al-Mahboob, Yaroslav B. Losovyj, Khabiboulakh Katsiev, Michael D. Valentin, Chun-Yu Huang, Michael J. Gomez, I-Hsi Lu, Alison Guan, Alexei Barinov, Talat S Rahman, Peter A. Dowben, Ludwig Bartels

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Gold islands are typically associated with high binding affinity to adsorbates and catalytic activity. Here we present the growth of such dispersed nanoscale gold islands on single layer MoS2, prepared on an inert SiO2/Si support by chemical vapor deposition (CVD). This study offers a combination of growth process development, optical characterization, photoelectron spectroscopy at sub-micron spatial resolution, and advanced density functional theory modeling for detailed insight into the electronic interaction between gold and single-layer MoS2. In particular, we find the gold density of states in Au/MoS2/SiO2/Si to be far less well-defined than Au islands on other 2-dimensional materials such as graphene, for which we also provide data. We attribute this effect to the presence of heterogeneous Au adatom/MoS2-support interactions within the nanometer-scale gold cluster. As a consequence, theory predicts that CO will exhibit adsorption energies in excess of 1 eV at the Au cluster edges, where the local density of states is dominated by Au 5dz2 symmetry.

Original language	English (US)
Pages (from-to)	267-273
Number of pages	7
Journal	The Journal of Physical Chemistry C
Volume	122
Issue number	1
DOIs	https://doi.org/10.1021/acs.jpcc.7b07632
State	Published - Dec 28 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We gratefully acknowledge joint funding from DOE grant DE-FG02-07ER15842 (UCF, UCR, UNL). DFT calculations were performed using resource from the National Energy Research Scientific Computing Center (NERSC, project 1996) and the Advanced Research Computing Center at UCF. Synchrotron resources were provided by Elettra. A.E.N as well as C.S.N, S.N.A. and A.G. gratefully acknowledges fellowship support through the National Science Foundation of the United States of America via grants DGE 1326120 and DMR 1359136, respectively.

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10.1021/acs.jpcc.7b07632

https://repository.kaust.edu.sa/bitstream/10754/626374/1/acs.jpcc.7b07632.pdf

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Merida, C. S., Le, D., Echeverría, E. M., Nguyen, A. E., Rawal, T. B., Naghibi Alvillar, S., Kandyba, V., Al-Mahboob, A., Losovyj, Y. B., Katsiev, K., Valentin, M. D., Huang, C.-Y., Gomez, M. J., Lu, I.-H., Guan, A., Barinov, A., Rahman, T. S., Dowben, P. A., & Bartels, L. (2017). Gold Dispersion and Activation on the Basal Plane of Single-Layer MoS2. The Journal of Physical Chemistry C, 122(1), 267-273. https://doi.org/10.1021/acs.jpcc.7b07632

@article{1649c0b8142d42839b468e0a5f069279,

title = "Gold Dispersion and Activation on the Basal Plane of Single-Layer MoS2",

abstract = "Gold islands are typically associated with high binding affinity to adsorbates and catalytic activity. Here we present the growth of such dispersed nanoscale gold islands on single layer MoS2, prepared on an inert SiO2/Si support by chemical vapor deposition (CVD). This study offers a combination of growth process development, optical characterization, photoelectron spectroscopy at sub-micron spatial resolution, and advanced density functional theory modeling for detailed insight into the electronic interaction between gold and single-layer MoS2. In particular, we find the gold density of states in Au/MoS2/SiO2/Si to be far less well-defined than Au islands on other 2-dimensional materials such as graphene, for which we also provide data. We attribute this effect to the presence of heterogeneous Au adatom/MoS2-support interactions within the nanometer-scale gold cluster. As a consequence, theory predicts that CO will exhibit adsorption energies in excess of 1 eV at the Au cluster edges, where the local density of states is dominated by Au 5dz2 symmetry.",

author = "Merida, {Cindy S.} and Duy Le and Echeverr{\'i}a, {Elena M.} and Nguyen, {Ariana E.} and Rawal, {Takat B} and {Naghibi Alvillar}, Sahar and Viktor Kandyba and Abdullah Al-Mahboob and Losovyj, {Yaroslav B.} and Khabiboulakh Katsiev and Valentin, {Michael D.} and Chun-Yu Huang and Gomez, {Michael J.} and I-Hsi Lu and Alison Guan and Alexei Barinov and Rahman, {Talat S} and Dowben, {Peter A.} and Ludwig Bartels",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We gratefully acknowledge joint funding from DOE grant DE-FG02-07ER15842 (UCF, UCR, UNL). DFT calculations were performed using resource from the National Energy Research Scientific Computing Center (NERSC, project 1996) and the Advanced Research Computing Center at UCF. Synchrotron resources were provided by Elettra. A.E.N as well as C.S.N, S.N.A. and A.G. gratefully acknowledges fellowship support through the National Science Foundation of the United States of America via grants DGE 1326120 and DMR 1359136, respectively.",

year = "2017",

month = dec,

day = "28",

doi = "10.1021/acs.jpcc.7b07632",

language = "English (US)",

volume = "122",

pages = "267--273",

journal = "The Journal of Physical Chemistry C",

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Merida, CS, Le, D, Echeverría, EM, Nguyen, AE, Rawal, TB, Naghibi Alvillar, S, Kandyba, V, Al-Mahboob, A, Losovyj, YB, Katsiev, K, Valentin, MD, Huang, C-Y, Gomez, MJ, Lu, I-H, Guan, A, Barinov, A, Rahman, TS, Dowben, PA & Bartels, L 2017, 'Gold Dispersion and Activation on the Basal Plane of Single-Layer MoS2', The Journal of Physical Chemistry C, vol. 122, no. 1, pp. 267-273. https://doi.org/10.1021/acs.jpcc.7b07632

TY - JOUR

T1 - Gold Dispersion and Activation on the Basal Plane of Single-Layer MoS2

AU - Merida, Cindy S.

AU - Le, Duy

AU - Echeverría, Elena M.

AU - Nguyen, Ariana E.

AU - Rawal, Takat B

AU - Naghibi Alvillar, Sahar

AU - Kandyba, Viktor

AU - Al-Mahboob, Abdullah

AU - Losovyj, Yaroslav B.

AU - Katsiev, Khabiboulakh

AU - Valentin, Michael D.

AU - Huang, Chun-Yu

AU - Gomez, Michael J.

AU - Lu, I-Hsi

AU - Guan, Alison

AU - Barinov, Alexei

AU - Rahman, Talat S

AU - Dowben, Peter A.

AU - Bartels, Ludwig

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We gratefully acknowledge joint funding from DOE grant DE-FG02-07ER15842 (UCF, UCR, UNL). DFT calculations were performed using resource from the National Energy Research Scientific Computing Center (NERSC, project 1996) and the Advanced Research Computing Center at UCF. Synchrotron resources were provided by Elettra. A.E.N as well as C.S.N, S.N.A. and A.G. gratefully acknowledges fellowship support through the National Science Foundation of the United States of America via grants DGE 1326120 and DMR 1359136, respectively.

PY - 2017/12/28

Y1 - 2017/12/28

N2 - Gold islands are typically associated with high binding affinity to adsorbates and catalytic activity. Here we present the growth of such dispersed nanoscale gold islands on single layer MoS2, prepared on an inert SiO2/Si support by chemical vapor deposition (CVD). This study offers a combination of growth process development, optical characterization, photoelectron spectroscopy at sub-micron spatial resolution, and advanced density functional theory modeling for detailed insight into the electronic interaction between gold and single-layer MoS2. In particular, we find the gold density of states in Au/MoS2/SiO2/Si to be far less well-defined than Au islands on other 2-dimensional materials such as graphene, for which we also provide data. We attribute this effect to the presence of heterogeneous Au adatom/MoS2-support interactions within the nanometer-scale gold cluster. As a consequence, theory predicts that CO will exhibit adsorption energies in excess of 1 eV at the Au cluster edges, where the local density of states is dominated by Au 5dz2 symmetry.

AB - Gold islands are typically associated with high binding affinity to adsorbates and catalytic activity. Here we present the growth of such dispersed nanoscale gold islands on single layer MoS2, prepared on an inert SiO2/Si support by chemical vapor deposition (CVD). This study offers a combination of growth process development, optical characterization, photoelectron spectroscopy at sub-micron spatial resolution, and advanced density functional theory modeling for detailed insight into the electronic interaction between gold and single-layer MoS2. In particular, we find the gold density of states in Au/MoS2/SiO2/Si to be far less well-defined than Au islands on other 2-dimensional materials such as graphene, for which we also provide data. We attribute this effect to the presence of heterogeneous Au adatom/MoS2-support interactions within the nanometer-scale gold cluster. As a consequence, theory predicts that CO will exhibit adsorption energies in excess of 1 eV at the Au cluster edges, where the local density of states is dominated by Au 5dz2 symmetry.

UR - http://hdl.handle.net/10754/626374

UR - http://pubs.acs.org/doi/10.1021/acs.jpcc.7b07632

UR - http://www.scopus.com/inward/record.url?scp=85040515239&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.7b07632

DO - 10.1021/acs.jpcc.7b07632

M3 - Article

SN - 1932-7447

VL - 122

SP - 267

EP - 273

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

IS - 1

ER -

Gold Dispersion and Activation on the Basal Plane of Single-Layer MoS2

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