Porous WO                         3                          monolith-based photoanodes for high-efficient photoelectrochemical water splitting

Yina Wang; Fangfang Zhang; Guoyan Zhao; Yingao Zhao; Yangyang Ren; Huijun Zhang; Linyu Zhang; Jimin Du; Yumin Han; Dae Joon Kang

doi:10.1016/j.ceramint.2019.01.012

Porous WO ₃ monolith-based photoanodes for high-efficient photoelectrochemical water splitting

Yina Wang
, Fangfang Zhang
, Guoyan Zhao
, Yingao Zhao
, Yangyang Ren
, Huijun Zhang
, Linyu Zhang
, Jimin Du
, Yumin Han
, Dae Joon Kang

Department of Physics

Anyang Normal University
Zhengzhou University
International Joint Laboratory of Henan Photoelectric Functional Materials
Sungkyunkwan University
Henan Province Key Laboratory of New Opto-Electronic Functional Materials

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

31 Scopus citations

Abstract

We report a successful fabrication of low-cost, high-efficient, structurally-rigid, porous WO ₃ photoelectrochemical (PEC) catalysts using polystyrene as the template by a sol-gel method and a high-temperature annealing treatment. The scanning electron microscopy and Brunauer-Emmett-Teller surface analysis results indicate that such WO ₃ monoliths possess a porous structure and a large specific surface area, which can supply lots of photogenerated charge transfer pathways as well as more surface PEC active sites. Compared with a commercially available WO ₃ , our highly porous WO ₃ PEC catalysts show an excellent PEC water splitting activity. Particularly, the porous WO ₃ photoanodes calcinated in the presence of oxygen atmosphere at 450 °C for 7 h show the best PEC performance exhibiting the photocurrent density of 0.97 mA/cm ² at 1.23 V versus reversible the hydrogen electrode and the incident photon-to-current conversion efficiency up to 48.9% at 420 nm in 0.5 M Na ₂ SO ₄ electrolyte under AM 1.5 G irradiation. Such excellent PEC performance is due to the high porosity of the WO ₃ , promoting the fast transfer and the separation rate of photogenerated carriers during the PEC water splitting process.

Original language	English
Pages (from-to)	7302-7308
Number of pages	7
Journal	Ceramics International
Volume	45
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2019.01.012
State	Published - 15 Apr 2019

Keywords

Energy conversion
Photoanode
Porous structures
Water splitting
WO

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10.1016/j.ceramint.2019.01.012

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Wang, Y., Zhang, F., Zhao, G., Zhao, Y., Ren, Y., Zhang, H., Zhang, L., Du, J., Han, Y., & Kang, D. J. (2019). Porous WO ₃ monolith-based photoanodes for high-efficient photoelectrochemical water splitting Ceramics International, 45(6), 7302-7308. https://doi.org/10.1016/j.ceramint.2019.01.012

@article{6fe70d050b5b49588f1aac8968868cb0,

title = " Porous WO 3 monolith-based photoanodes for high-efficient photoelectrochemical water splitting ",

abstract = " We report a successful fabrication of low-cost, high-efficient, structurally-rigid, porous WO 3 photoelectrochemical (PEC) catalysts using polystyrene as the template by a sol-gel method and a high-temperature annealing treatment. The scanning electron microscopy and Brunauer-Emmett-Teller surface analysis results indicate that such WO 3 monoliths possess a porous structure and a large specific surface area, which can supply lots of photogenerated charge transfer pathways as well as more surface PEC active sites. Compared with a commercially available WO 3 , our highly porous WO 3 PEC catalysts show an excellent PEC water splitting activity. Particularly, the porous WO 3 photoanodes calcinated in the presence of oxygen atmosphere at 450 °C for 7 h show the best PEC performance exhibiting the photocurrent density of 0.97 mA/cm 2 at 1.23 V versus reversible the hydrogen electrode and the incident photon-to-current conversion efficiency up to 48.9\% at 420 nm in 0.5 M Na 2 SO 4 electrolyte under AM 1.5 G irradiation. Such excellent PEC performance is due to the high porosity of the WO 3 , promoting the fast transfer and the separation rate of photogenerated carriers during the PEC water splitting process.",

keywords = "Energy conversion, Photoanode, Porous structures, Water splitting, WO",

author = "Yina Wang and Fangfang Zhang and Guoyan Zhao and Yingao Zhao and Yangyang Ren and Huijun Zhang and Linyu Zhang and Jimin Du and Yumin Han and Kang, \{Dae Joon\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

month = apr,

day = "15",

doi = "10.1016/j.ceramint.2019.01.012",

language = "English",

volume = "45",

pages = "7302--7308",

journal = "Ceramics International",

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Wang, Y, Zhang, F, Zhao, G, Zhao, Y, Ren, Y, Zhang, H, Zhang, L, Du, J, Han, Y & Kang, DJ 2019, ' Porous WO ₃ monolith-based photoanodes for high-efficient photoelectrochemical water splitting ', Ceramics International, vol. 45, no. 6, pp. 7302-7308. https://doi.org/10.1016/j.ceramint.2019.01.012

Porous WO ₃ monolith-based photoanodes for high-efficient photoelectrochemical water splitting . / Wang, Yina; Zhang, Fangfang; Zhao, Guoyan et al.
In: Ceramics International, Vol. 45, No. 6, 15.04.2019, p. 7302-7308.

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

TY - JOUR

T1 - Porous WO 3 monolith-based photoanodes for high-efficient photoelectrochemical water splitting

AU - Wang, Yina

AU - Zhang, Fangfang

AU - Zhao, Guoyan

AU - Zhao, Yingao

AU - Ren, Yangyang

AU - Zhang, Huijun

AU - Zhang, Linyu

AU - Du, Jimin

AU - Han, Yumin

AU - Kang, Dae Joon

PY - 2019/4/15

Y1 - 2019/4/15

N2 - We report a successful fabrication of low-cost, high-efficient, structurally-rigid, porous WO 3 photoelectrochemical (PEC) catalysts using polystyrene as the template by a sol-gel method and a high-temperature annealing treatment. The scanning electron microscopy and Brunauer-Emmett-Teller surface analysis results indicate that such WO 3 monoliths possess a porous structure and a large specific surface area, which can supply lots of photogenerated charge transfer pathways as well as more surface PEC active sites. Compared with a commercially available WO 3 , our highly porous WO 3 PEC catalysts show an excellent PEC water splitting activity. Particularly, the porous WO 3 photoanodes calcinated in the presence of oxygen atmosphere at 450 °C for 7 h show the best PEC performance exhibiting the photocurrent density of 0.97 mA/cm 2 at 1.23 V versus reversible the hydrogen electrode and the incident photon-to-current conversion efficiency up to 48.9% at 420 nm in 0.5 M Na 2 SO 4 electrolyte under AM 1.5 G irradiation. Such excellent PEC performance is due to the high porosity of the WO 3 , promoting the fast transfer and the separation rate of photogenerated carriers during the PEC water splitting process.

AB - We report a successful fabrication of low-cost, high-efficient, structurally-rigid, porous WO 3 photoelectrochemical (PEC) catalysts using polystyrene as the template by a sol-gel method and a high-temperature annealing treatment. The scanning electron microscopy and Brunauer-Emmett-Teller surface analysis results indicate that such WO 3 monoliths possess a porous structure and a large specific surface area, which can supply lots of photogenerated charge transfer pathways as well as more surface PEC active sites. Compared with a commercially available WO 3 , our highly porous WO 3 PEC catalysts show an excellent PEC water splitting activity. Particularly, the porous WO 3 photoanodes calcinated in the presence of oxygen atmosphere at 450 °C for 7 h show the best PEC performance exhibiting the photocurrent density of 0.97 mA/cm 2 at 1.23 V versus reversible the hydrogen electrode and the incident photon-to-current conversion efficiency up to 48.9% at 420 nm in 0.5 M Na 2 SO 4 electrolyte under AM 1.5 G irradiation. Such excellent PEC performance is due to the high porosity of the WO 3 , promoting the fast transfer and the separation rate of photogenerated carriers during the PEC water splitting process.

KW - Energy conversion

KW - Photoanode

KW - Porous structures

KW - Water splitting

KW - WO

UR - https://www.scopus.com/pages/publications/85059521134

U2 - 10.1016/j.ceramint.2019.01.012

DO - 10.1016/j.ceramint.2019.01.012

M3 - Article

AN - SCOPUS:85059521134

SN - 0272-8842

VL - 45

SP - 7302

EP - 7308

JO - Ceramics International

JF - Ceramics International

IS - 6

ER -

Porous WO ₃ monolith-based photoanodes for high-efficient photoelectrochemical water splitting

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Keywords

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