Zhang, Q., Brndiar, J., Konôpka, M., Wen, H. F., Adachi, Y., Miyazaki, M., Turanský, R., Xu, R., Cheng, Z. H., Sugawara, Y., Štich, I., & Li, Y. J. (2021). Unraveling the Charge States of Au Nanoclusters on an Oxygen-Rich Rutile TiO2(110) Surface and Their Triboelectrification Overturn by nc-AFM and KPFM. Journal of Physical Chemistry C, 125(50), 27607-27614. https://doi.org/10.1021/acs.jpcc.1c07997
Zhang, Quanzhen ; Brndiar, Ján ; Konôpka, Martin et al. / Unraveling the Charge States of Au Nanoclusters on an Oxygen-Rich Rutile TiO2(110) Surface and Their Triboelectrification Overturn by nc-AFM and KPFM. In: Journal of Physical Chemistry C. 2021 ; Vol. 125, No. 50. pp. 27607-27614.
@article{01e621497e774c33b8378f31575074bc,
title = "Unraveling the Charge States of Au Nanoclusters on an Oxygen-Rich Rutile TiO2(110) Surface and Their Triboelectrification Overturn by nc-AFM and KPFM",
abstract = "Using noncontact atomic force microscopy and Kelvin probe force microscopy at 78 K, we study the charge states of Au nanoclusters dispersed on an oxygen-rich rutile TiO2(110) surface. The Au nanoclusters are catalytically active species with a single- or double-layered thickness and having sub 3 nm diameters. The Au nanoclusters are found by Kelvin probe force microscopy to be positively charged, and the charge transfer from Au nanoclusters to a substrate is demonstrated to be strongly size-dependent. Specifically, the charged defects play a key role in the discharge process by serving as a polaronic charge storage for the back-donated charge from the Au nanoclusters. Using the triboelectrification effect, we find that the redox states of the Au nanoclusters can be dynamically overturned from positive to negative by continuous long-time scanning. Our findings have a strong impact on the understanding of catalytic reactions based on dispersed noble-metal nanoclusters on transition-metal oxide surfaces.",
author = "Quanzhen Zhang and J{\'a}n Brndiar and Martin Kon{\^o}pka and Wen, {Huan Fei} and Yuuki Adachi and Masato Miyazaki and Robert Turansk{\'y} and Rui Xu and Cheng, {Zhi Hai} and Yasuhiro Sugawara and Ivan {\v S}tich and Li, {Yan Jun}",
note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society",
year = "2021",
month = dec,
day = "23",
doi = "10.1021/acs.jpcc.1c07997",
language = "English",
volume = "125",
pages = "27607--27614",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "50",
}
Zhang, Q, Brndiar, J, Konôpka, M, Wen, HF, Adachi, Y, Miyazaki, M, Turanský, R, Xu, R, Cheng, ZH, Sugawara, Y, Štich, I & Li, YJ 2021, 'Unraveling the Charge States of Au Nanoclusters on an Oxygen-Rich Rutile TiO2(110) Surface and Their Triboelectrification Overturn by nc-AFM and KPFM', Journal of Physical Chemistry C, vol. 125, no. 50, pp. 27607-27614. https://doi.org/10.1021/acs.jpcc.1c07997
Unraveling the Charge States of Au Nanoclusters on an Oxygen-Rich Rutile TiO2(110) Surface and Their Triboelectrification Overturn by nc-AFM and KPFM. /
Zhang, Quanzhen; Brndiar, Ján; Konôpka, Martin et al.
In:
Journal of Physical Chemistry C, Vol. 125, No. 50, 23.12.2021, p. 27607-27614.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Unraveling the Charge States of Au Nanoclusters on an Oxygen-Rich Rutile TiO2(110) Surface and Their Triboelectrification Overturn by nc-AFM and KPFM
AU - Zhang, Quanzhen
AU - Brndiar, Ján
AU - Konôpka, Martin
AU - Wen, Huan Fei
AU - Adachi, Yuuki
AU - Miyazaki, Masato
AU - Turanský, Robert
AU - Xu, Rui
AU - Cheng, Zhi Hai
AU - Sugawara, Yasuhiro
AU - Štich, Ivan
AU - Li, Yan Jun
N1 - Publisher Copyright:
© 2021 American Chemical Society
PY - 2021/12/23
Y1 - 2021/12/23
N2 - Using noncontact atomic force microscopy and Kelvin probe force microscopy at 78 K, we study the charge states of Au nanoclusters dispersed on an oxygen-rich rutile TiO2(110) surface. The Au nanoclusters are catalytically active species with a single- or double-layered thickness and having sub 3 nm diameters. The Au nanoclusters are found by Kelvin probe force microscopy to be positively charged, and the charge transfer from Au nanoclusters to a substrate is demonstrated to be strongly size-dependent. Specifically, the charged defects play a key role in the discharge process by serving as a polaronic charge storage for the back-donated charge from the Au nanoclusters. Using the triboelectrification effect, we find that the redox states of the Au nanoclusters can be dynamically overturned from positive to negative by continuous long-time scanning. Our findings have a strong impact on the understanding of catalytic reactions based on dispersed noble-metal nanoclusters on transition-metal oxide surfaces.
AB - Using noncontact atomic force microscopy and Kelvin probe force microscopy at 78 K, we study the charge states of Au nanoclusters dispersed on an oxygen-rich rutile TiO2(110) surface. The Au nanoclusters are catalytically active species with a single- or double-layered thickness and having sub 3 nm diameters. The Au nanoclusters are found by Kelvin probe force microscopy to be positively charged, and the charge transfer from Au nanoclusters to a substrate is demonstrated to be strongly size-dependent. Specifically, the charged defects play a key role in the discharge process by serving as a polaronic charge storage for the back-donated charge from the Au nanoclusters. Using the triboelectrification effect, we find that the redox states of the Au nanoclusters can be dynamically overturned from positive to negative by continuous long-time scanning. Our findings have a strong impact on the understanding of catalytic reactions based on dispersed noble-metal nanoclusters on transition-metal oxide surfaces.
UR - http://www.scopus.com/inward/record.url?scp=85121312557&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.1c07997
DO - 10.1021/acs.jpcc.1c07997
M3 - Article
AN - SCOPUS:85121312557
SN - 1932-7447
VL - 125
SP - 27607
EP - 27614
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 50
ER -
Zhang Q, Brndiar J, Konôpka M, Wen HF, Adachi Y, Miyazaki M et al. Unraveling the Charge States of Au Nanoclusters on an Oxygen-Rich Rutile TiO2(110) Surface and Their Triboelectrification Overturn by nc-AFM and KPFM. Journal of Physical Chemistry C. 2021 Dec 23;125(50):27607-27614. doi: 10.1021/acs.jpcc.1c07997
