Synthesis and characterization the multifunctional
nanostructures Ti
x
W
1-x
O
2
(x ¼ 0.5; 0.6; 0.7; 0.8)
supports as robust non-carbon support for Pt
nanoparticles for direct ethanol fuel cells
Hau Quoc Pham
a
, Tai Thien Huynh
a,b
, Long Giang Bach
c
,
Van Thi Thanh Ho
b,*
a
Ho Chi Minh City University of Technology, VNU-HCM, Viet Nam
b
Hochiminh City University of Natural Resources and Environment (HCMUNRE), Viet Nam
c
NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
highlights graphical abstract
Effect of differential W: Ti ratio on
properties of W-doped TiO2 sup-
ports was investigated.
Effect of differential W: Ti ratio on
ethanol electro-oxidation reaction
(EOR) was studied.
Various Pt/TixW1-xO2 catalysts
showed better performance than
commercial Pt/C catalysts.
Various Pt/TixW1-xO2 electro-
catalysts demonstrated superior
electrochemical stability.
article info
Article history:
Received 30 December 2019
Received in revised form
7 February 2020
Accepted 3 March 2020
Available online xxx
Keywords:
Direct ethanol fuel cells
Ti
x
W
1-x
O
2
Pt/Ti
x
W
1-x
O
2
abstract
In the present study, various mesoporous Ti
x
W
1-x
O
2
(x ¼ 0.5; 0.6; 0.7; 0.8) supports were
fabricated via a facile solvothermal approach and explored the effect of doping tungsten
concentration on electrochemical properties of Ti
x
W
1-x
O
2
-supported Pt electrocatalysts
toward ethanol electrochemical reaction. Interestingly, the incorporation of tungsten into
TiO
2
lattices with the doping tungsten amounts (20 and 30 at %) resulted in boosting both
the surface area and electrical conductivity, however, a reverse trend was observed when
increasing the doped tungsten content more than 40 at %. Additionally, the relatively well-
distributed Pt nanoparticles with the small particle size (ca. 3 nm) anchored on supports
were achieved using a microwave-assisted polyol route. Electrochemical results indicated
that various Ti
x
W
1-x
O
2
-supported Pt catalysts exhibited the catalytic performance greater
than that of the commercial carbon-supported Pt (E-TEK) catalyst for ethanol electro-
oxidation reaction (EOR). For as-obtained electrocatalysts, the Ti
0.7
W
0.3
O
2
-supported Pt
* Corresponding author.
E-mail address: httvan@hcmunre.edu.vn (V.T.T. Ho).
Available online at www.sciencedirect.com
ScienceDirect
journal homepage: www.elsevier.com/locate/he
international journal of hydrogen energy xxx (xxxx) xxx
https://doi.org/10.1016/j.ijhydene.2020.03.066
0360-3199/© 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Please cite this article as: Pham HQ et al., Synthesis and characterization the multifunctional nanostructures Ti
x
W
1-x
O
2
(x ¼ 0.5; 0.6; 0.7;
0.8) supports as robust non-carbon support for Pt nanoparticles for direct ethanol fuel cells, International Journal of Hydrogen Energy,
https://doi.org/10.1016/j.ijhydene.2020.03.066