Hematite modified tungsten trioxide nanoparticle photoanode for solar water oxidation

Aiming Mao; Jung Kyu Kim; Kahee Shin; Dong Hwan Wang; Pil J. Yoo; Gui Young Han; Jong Hyeok Park

doi:10.1016/j.jpowsour.2012.02.112

Hematite modified tungsten trioxide nanoparticle photoanode for solar water oxidation

Aiming Mao
, Jung Kyu Kim
, Kahee Shin
, Dong Hwan Wang
, Pil J. Yoo
, Gui Young Han
, Jong Hyeok Park

Department of Chemical Engineering

Sungkyunkwan University

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

45 Scopus citations

Abstract

Hematite (α-Fe ₂O ₃) film is electrochemically deposited onto the surface of tungsten trioxide (WO ₃) nanoparticulate film. The synthesis of the WO ₃ nanostructure is directed by surfactants for control of its morphology. The resulting composite shows visible light harvesting and is tested as photoanodes in heterojunction photoelectrochemical cells for the possibility of direct water splitting under visible illumination. The composite's structural and optical properties are characterized by FESEM, EDS, XRD, XPS, and UV-vis spectrometry; its photocurrent responses are also investigated under simulated solar illumination. Coupling WO ₃ with hematite results in over 9 times greater photocurrent density than that shown by pure WO ₃ in sodium sulfate electrolyte. This simple modification can significantly improve the performance of WO ₃.

Original language	English
Pages (from-to)	32-37
Number of pages	6
Journal	Journal of Power Sources
Volume	210
DOIs	https://doi.org/10.1016/j.jpowsour.2012.02.112
State	Published - 15 Jul 2012

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Hematite
Nanocomposites
Photoelectrochemical cells
Tungsten trioxide
Water splitting

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10.1016/j.jpowsour.2012.02.112

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title = "Hematite modified tungsten trioxide nanoparticle photoanode for solar water oxidation",

abstract = "Hematite (α-Fe 2O 3) film is electrochemically deposited onto the surface of tungsten trioxide (WO 3) nanoparticulate film. The synthesis of the WO 3 nanostructure is directed by surfactants for control of its morphology. The resulting composite shows visible light harvesting and is tested as photoanodes in heterojunction photoelectrochemical cells for the possibility of direct water splitting under visible illumination. The composite's structural and optical properties are characterized by FESEM, EDS, XRD, XPS, and UV-vis spectrometry; its photocurrent responses are also investigated under simulated solar illumination. Coupling WO 3 with hematite results in over 9 times greater photocurrent density than that shown by pure WO 3 in sodium sulfate electrolyte. This simple modification can significantly improve the performance of WO 3.",

keywords = "Hematite, Nanocomposites, Photoelectrochemical cells, Tungsten trioxide, Water splitting",

author = "Aiming Mao and Kim, \{Jung Kyu\} and Kahee Shin and Wang, \{Dong Hwan\} and Yoo, \{Pil J.\} and Han, \{Gui Young\} and Park, \{Jong Hyeok\}",

year = "2012",

month = jul,

day = "15",

doi = "10.1016/j.jpowsour.2012.02.112",

language = "English",

volume = "210",

pages = "32--37",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Hematite modified tungsten trioxide nanoparticle photoanode for solar water oxidation

AU - Mao, Aiming

AU - Kim, Jung Kyu

AU - Shin, Kahee

AU - Wang, Dong Hwan

AU - Yoo, Pil J.

AU - Han, Gui Young

AU - Park, Jong Hyeok

PY - 2012/7/15

Y1 - 2012/7/15

N2 - Hematite (α-Fe 2O 3) film is electrochemically deposited onto the surface of tungsten trioxide (WO 3) nanoparticulate film. The synthesis of the WO 3 nanostructure is directed by surfactants for control of its morphology. The resulting composite shows visible light harvesting and is tested as photoanodes in heterojunction photoelectrochemical cells for the possibility of direct water splitting under visible illumination. The composite's structural and optical properties are characterized by FESEM, EDS, XRD, XPS, and UV-vis spectrometry; its photocurrent responses are also investigated under simulated solar illumination. Coupling WO 3 with hematite results in over 9 times greater photocurrent density than that shown by pure WO 3 in sodium sulfate electrolyte. This simple modification can significantly improve the performance of WO 3.

AB - Hematite (α-Fe 2O 3) film is electrochemically deposited onto the surface of tungsten trioxide (WO 3) nanoparticulate film. The synthesis of the WO 3 nanostructure is directed by surfactants for control of its morphology. The resulting composite shows visible light harvesting and is tested as photoanodes in heterojunction photoelectrochemical cells for the possibility of direct water splitting under visible illumination. The composite's structural and optical properties are characterized by FESEM, EDS, XRD, XPS, and UV-vis spectrometry; its photocurrent responses are also investigated under simulated solar illumination. Coupling WO 3 with hematite results in over 9 times greater photocurrent density than that shown by pure WO 3 in sodium sulfate electrolyte. This simple modification can significantly improve the performance of WO 3.

KW - Hematite

KW - Nanocomposites

KW - Photoelectrochemical cells

KW - Tungsten trioxide

KW - Water splitting

UR - https://www.scopus.com/pages/publications/84860643653

U2 - 10.1016/j.jpowsour.2012.02.112

DO - 10.1016/j.jpowsour.2012.02.112

M3 - Article

AN - SCOPUS:84860643653

SN - 0378-7753

VL - 210

SP - 32

EP - 37

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Hematite modified tungsten trioxide nanoparticle photoanode for solar water oxidation

Abstract

UN SDGs

Keywords

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