Commercial titania photocatalysts were modified with silver nanoparticles (NPs) by the photodeposition method in the presence/absence of methanol. The obtained photocatalysts were characterized by XRD, XPS, diffuse reflectance spectroscopy, STEM, and time-resolved microwave conductivity (TRMC) methods. The photocatalytic activity was tested under UV/vis irradiation for (i) methanol dehydrogenation (during silver deposition), (ii) oxygen evolution with in situ silver deposition, and (iii) oxidative decomposition of acetic acid, as well as under vis irradiation for 2-propanol oxidation. The action spectra of 2-propanol oxidation were also performed. It has been confirmed that modification of titania with silver causes significant improvement of photocatalytic activity under both UV and vis irradiation as silver works as an electron scavenger (TRMC data) and vis activator (possibly by an energy transfer mechanism). The obtained activities differ between titania samples significantly, suggesting that the type of crystalline phase, particle/crystallite sizes, and electron traps’ density are crucial for both the properties of formed silver deposits and resultant photocatalytic activity. It might be concluded that, under UV irradiation, (i) high crystallinity and large specific surface area are recommended for rutile- and anatase-rich samples, respectively, during hydrogen evolution, (ii) mixed crystalline phases cause a high rate of oxygen evolution from water, and (iii) anatase phase with fine silver NPs results in efficient decomposition of acetic acid, whereas under vis irradiation the aggregated silver NPs (broad localized surface plasmon resonance peak) on the rutile phase are promising for oxidation reactions.
Skip Nav Destination
,
,
,
,
,
Article navigation
28 June 2022
Research Article|
June 30 2022
The property-governed activity of silver-modified titania photocatalysts: The influence of titania matrix Available to Purchase
Special Collection:
Plasmon-Driven Energy Conversion
Kenta Yoshiiri
;
Kenta Yoshiiri
(Investigation, Writing – original draft)
1
Graduate School of Environmental Science, Hokkaido University
, Sapporo, Japan
2
Institute for Catalysis (ICAT), Hokkaido University
, Sapporo, Japan
Search for other works by this author on:
Baris Karabiyik
;
Baris Karabiyik
(Investigation, Writing – original draft)
2
Institute for Catalysis (ICAT), Hokkaido University
, Sapporo, Japan
Search for other works by this author on:
Kunlei Wang
;
Kunlei Wang
(Methodology, Visualization, Writing – review & editing)
2
Institute for Catalysis (ICAT), Hokkaido University
, Sapporo, Japan
3
Northwest Research Institute, Co. Ltd. of C.R.E.C.
, Lanzhou, China
Search for other works by this author on:
Zhishun Wei
;
Zhishun Wei
(Methodology, Writing – review & editing)
4
Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology
, Wuhan, People's Republic of China
Search for other works by this author on:
Christophe Colbeau-Justin
;
Christophe Colbeau-Justin
(Methodology, Validation)
5
Laboratory of Physical Chemistry (LPC), Paris-Sud University
, Orsay, France
Search for other works by this author on:
Ewa Kowalska
Ewa Kowalska
a)
(Conceptualization, Funding acquisition, Resources, Supervision, Writing – review & editing)
1
Graduate School of Environmental Science, Hokkaido University
, Sapporo, Japan
2
Institute for Catalysis (ICAT), Hokkaido University
, Sapporo, Japan
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
Kenta Yoshiiri
1,2
Baris Karabiyik
2
Kunlei Wang
2,3
Zhishun Wei
4
Christophe Colbeau-Justin
5
Ewa Kowalska
1,2,a)
1
Graduate School of Environmental Science, Hokkaido University
, Sapporo, Japan
2
Institute for Catalysis (ICAT), Hokkaido University
, Sapporo, Japan
3
Northwest Research Institute, Co. Ltd. of C.R.E.C.
, Lanzhou, China
4
Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology
, Wuhan, People's Republic of China
5
Laboratory of Physical Chemistry (LPC), Paris-Sud University
, Orsay, France
a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the JCP Special Topic on Plasmon-Driven Energy Conversion.
J. Chem. Phys. 156, 244706 (2022)
Article history
Received:
May 02 2022
Accepted:
June 02 2022
Citation
Kenta Yoshiiri, Baris Karabiyik, Kunlei Wang, Zhishun Wei, Christophe Colbeau-Justin, Ewa Kowalska; The property-governed activity of silver-modified titania photocatalysts: The influence of titania matrix. J. Chem. Phys. 28 June 2022; 156 (24): 244706. https://doi.org/10.1063/5.0097762
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
CREST—A program for the exploration of low-energy molecular chemical space
Philipp Pracht, Stefan Grimme, et al.
DeePMD-kit v2: A software package for deep potential models
Jinzhe Zeng, Duo Zhang, et al.
Related Content
Widely tuning optical properties of nanoporous gold-titania core-shells
J. Chem. Phys. (January 2011)
Heterojunction of CuO nanoclusters with TiO2 for photo-oxidation of organic compounds and for hydrogen production
J. Chem. Phys. (July 2020)
Augmented photocatalytic activity and luminescence response of Tb3+ doped nanoscale titania systems
J. Appl. Phys. (October 2014)
Study of the formation of 3-D titania nanofibrous structure by MHz femtosecond laser in ambient air
J. Appl. Phys. (January 2013)
Libraries of cluster-assembled titania films for chemical sensing
Appl. Phys. Lett. (August 2005)