10.1021/acsami.5b00830.s001
Canjun Liu
Canjun
Liu
Yahui Yang
Yahui
Yang
Wenzhang Li
Wenzhang
Li
Jie Li
Jie
Li
Yaomin Li
Yaomin
Li
Qilin Shi
Qilin
Shi
Qiyuan Chen
Qiyuan
Chen
Highly
Efficient Photoelectrochemical Hydrogen Generation Using Zn<sub><i>x</i></sub>Bi<sub>2</sub>S<sub>3+<i>x</i></sub> Sensitized
Platelike WO<sub>3</sub> Photoelectrodes
American Chemical Society
2015
SILAR
hydrogen generation
Bi 2S photoelectrodes
layer adsorption reaction
ZnxBi 2S films show
FTO
WO 3 plates
UV
ZnxBi 2S Sensitized Platelike WO 3 PhotoelectrodesZnxBi 2S
ZnxBi 2S film
TEM
PEC activity
SEM
scanning electron microscopy
platelike WO 3 photoelectrodes
ZnxBi 2S quantum dots
ZnxBi 2S photoelectrodes exhibit
Efficient Photoelectrochemical Hydrogen Generation
electron transport properties
QD
2015-05-27 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Highly_Efficient_Photoelectrochemical_Hydrogen_Generation_Using_Zn_sub_i_x_i_sub_Bi_sub_2_sub_S_sub_3_i_x_i_sub_Sensitized_Platelike_WO_sub_3_sub_Photoelectrodes/2163637
Zn<sub><i>x</i></sub>Bi<sub>2</sub>S<sub>3+<i>x</i></sub> sensitized platelike WO<sub>3</sub> photoelectrodes on FTO substrates were for the first time
prepared via a sequential ionic layer adsorption reaction (SILAR)
process. The samples were characterized by scanning electron microscopy
(SEM), transmission electron microscopy (TEM), ultraviolet visible
spectrometry (UV–vis), and Raman spectra. The results show
that the Zn<sub><i>x</i></sub>Bi<sub>2</sub>S<sub>3+<i>x</i></sub> quantum dots (QDs) are uniformly coated on the entire
surface of WO<sub>3</sub> plates, forming a WO<sub>3</sub>/Zn<sub><i>x</i></sub>Bi<sub>2</sub>S<sub>3+<i>x</i></sub> core/shell structure. The Zn<sub><i>x</i></sub>Bi<sub>2</sub>S<sub>3+<i>x</i></sub>/WO<sub>3</sub> films show
a superior ability to capture visible light. High-efficiency photoelectrochemical
(PEC) hydrogen generation is demonstrated using the prepared electrodes
as photoanodes in a typical three-electrode electrochemical cell.
Compared to the Bi<sub>2</sub>S<sub>3</sub>/WO<sub>3</sub> photoelectrodes,
the Zn<sub><i>x</i></sub>Bi<sub>2</sub>S<sub>3+<i>x</i></sub>/WO<sub>3</sub> photoelectrodes exhibit good photostability
and excellent PEC activity, and the photocurrent density is up to
7.0 mA cm<sup>–2</sup> at −0.1 V versus Ag/AgCl under
visible light illumination. Investigation of the electron transport
properties of the photoelectrodes shows that the introduction of ZnS
enhances the photoelectrons’ transport rate in the photoelectrode.
The high PEC activity demonstrates the potential of the Zn<sub><i>x</i></sub>Bi<sub>2</sub>S<sub>3+<i>x</i></sub>/WO<sub>3</sub> film as an efficient photoelectrode for hydrogen generation.