A 3D triple-deck photoanode with a strengthened structure integrality: Enhanced photoelectrochemical water oxidation

Ming Ma, Xinjian Shi, Kan Zhang, Soonwoo Kwon, Ping Li, Jung Kyu Kim, Thanh Tran Phu, Gi Ra Yi, Jong Hyeok Park

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

WO3/BiVO4 is one of the attractive Type II heterojunctions for photoelectrochemical (PEC) water splitting due to its well-matched band edge positions and visible light harvesting abilities. However, two light absorption components generally suffer from poor charge collection and cannot be efficiently utilized because of non-ideal interfaces. Herein, a triple-deck three-dimensional (3D) architecture was designed through a one-step shaping process with an additional stress relaxation WO3 underlayer. The final photoanodes showed a promising photocurrent density of 5.1 mA cm-2 at 1.23 V vs. RHE under AM 1.5G illumination. Using the uniformly distributed oxygen evolution co-catalyst (OEC) layer as the outer most shell of the WO3/BiVO4/OEC triple-deck 3D structure with a dense WO3 underlayer, the water splitting efficiency was improved dramatically by facilitating the charge transfer process at the electrode/electrolyte interface.

Original languageEnglish
Pages (from-to)3474-3481
Number of pages8
JournalNanoscale
Volume8
Issue number6
DOIs
Publication statusPublished - 2016 Feb 14

Fingerprint

Oxygen
Oxidation
Catalysts
Water
Stress relaxation
Photocurrents
Light absorption
Electrolytes
Heterojunctions
Charge transfer
Lighting
Electrodes
bismuth vanadium tetraoxide

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Ma, Ming ; Shi, Xinjian ; Zhang, Kan ; Kwon, Soonwoo ; Li, Ping ; Kim, Jung Kyu ; Phu, Thanh Tran ; Yi, Gi Ra ; Park, Jong Hyeok. / A 3D triple-deck photoanode with a strengthened structure integrality : Enhanced photoelectrochemical water oxidation. In: Nanoscale. 2016 ; Vol. 8, No. 6. pp. 3474-3481.
@article{e937c119eb06430a8c1c28a5e83b5467,
title = "A 3D triple-deck photoanode with a strengthened structure integrality: Enhanced photoelectrochemical water oxidation",
abstract = "WO3/BiVO4 is one of the attractive Type II heterojunctions for photoelectrochemical (PEC) water splitting due to its well-matched band edge positions and visible light harvesting abilities. However, two light absorption components generally suffer from poor charge collection and cannot be efficiently utilized because of non-ideal interfaces. Herein, a triple-deck three-dimensional (3D) architecture was designed through a one-step shaping process with an additional stress relaxation WO3 underlayer. The final photoanodes showed a promising photocurrent density of 5.1 mA cm-2 at 1.23 V vs. RHE under AM 1.5G illumination. Using the uniformly distributed oxygen evolution co-catalyst (OEC) layer as the outer most shell of the WO3/BiVO4/OEC triple-deck 3D structure with a dense WO3 underlayer, the water splitting efficiency was improved dramatically by facilitating the charge transfer process at the electrode/electrolyte interface.",
author = "Ming Ma and Xinjian Shi and Kan Zhang and Soonwoo Kwon and Ping Li and Kim, {Jung Kyu} and Phu, {Thanh Tran} and Yi, {Gi Ra} and Park, {Jong Hyeok}",
year = "2016",
month = "2",
day = "14",
doi = "10.1039/c5nr08604c",
language = "English",
volume = "8",
pages = "3474--3481",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "6",

}

A 3D triple-deck photoanode with a strengthened structure integrality : Enhanced photoelectrochemical water oxidation. / Ma, Ming; Shi, Xinjian; Zhang, Kan; Kwon, Soonwoo; Li, Ping; Kim, Jung Kyu; Phu, Thanh Tran; Yi, Gi Ra; Park, Jong Hyeok.

In: Nanoscale, Vol. 8, No. 6, 14.02.2016, p. 3474-3481.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A 3D triple-deck photoanode with a strengthened structure integrality

T2 - Enhanced photoelectrochemical water oxidation

AU - Ma, Ming

AU - Shi, Xinjian

AU - Zhang, Kan

AU - Kwon, Soonwoo

AU - Li, Ping

AU - Kim, Jung Kyu

AU - Phu, Thanh Tran

AU - Yi, Gi Ra

AU - Park, Jong Hyeok

PY - 2016/2/14

Y1 - 2016/2/14

N2 - WO3/BiVO4 is one of the attractive Type II heterojunctions for photoelectrochemical (PEC) water splitting due to its well-matched band edge positions and visible light harvesting abilities. However, two light absorption components generally suffer from poor charge collection and cannot be efficiently utilized because of non-ideal interfaces. Herein, a triple-deck three-dimensional (3D) architecture was designed through a one-step shaping process with an additional stress relaxation WO3 underlayer. The final photoanodes showed a promising photocurrent density of 5.1 mA cm-2 at 1.23 V vs. RHE under AM 1.5G illumination. Using the uniformly distributed oxygen evolution co-catalyst (OEC) layer as the outer most shell of the WO3/BiVO4/OEC triple-deck 3D structure with a dense WO3 underlayer, the water splitting efficiency was improved dramatically by facilitating the charge transfer process at the electrode/electrolyte interface.

AB - WO3/BiVO4 is one of the attractive Type II heterojunctions for photoelectrochemical (PEC) water splitting due to its well-matched band edge positions and visible light harvesting abilities. However, two light absorption components generally suffer from poor charge collection and cannot be efficiently utilized because of non-ideal interfaces. Herein, a triple-deck three-dimensional (3D) architecture was designed through a one-step shaping process with an additional stress relaxation WO3 underlayer. The final photoanodes showed a promising photocurrent density of 5.1 mA cm-2 at 1.23 V vs. RHE under AM 1.5G illumination. Using the uniformly distributed oxygen evolution co-catalyst (OEC) layer as the outer most shell of the WO3/BiVO4/OEC triple-deck 3D structure with a dense WO3 underlayer, the water splitting efficiency was improved dramatically by facilitating the charge transfer process at the electrode/electrolyte interface.

UR - http://www.scopus.com/inward/record.url?scp=84957613726&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84957613726&partnerID=8YFLogxK

U2 - 10.1039/c5nr08604c

DO - 10.1039/c5nr08604c

M3 - Article

AN - SCOPUS:84957613726

VL - 8

SP - 3474

EP - 3481

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 6

ER -