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 and Biomolecular Engineering

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

39 Citations (Scopus)

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
Publication status	Published - 2012 Jul 15

Bibliographical note

Funding Information:
This work was supported by grants (2011-0030254 and NCRC program (2011-0006268)) of National Research Foundation (NRF) funded by the Korea Ministry of Education, Science and Technology (MEST) . J. H. Park acknowledges Future-based Technology Development Program (Nano Fields) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2010-0029321 ). A. Mao and J. K. Kim contributed equally to this work.

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

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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.",

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}",

note = "Funding Information: This work was supported by grants (2011-0030254 and NCRC program (2011-0006268)) of National Research Foundation (NRF) funded by the Korea Ministry of Education, Science and Technology (MEST) . J. H. Park acknowledges Future-based Technology Development Program (Nano Fields) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2010-0029321 ). A. Mao and J. K. Kim contributed equally to this work. ",

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

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journal = "Journal of Power Sources",

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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

N1 - Funding Information: This work was supported by grants (2011-0030254 and NCRC program (2011-0006268)) of National Research Foundation (NRF) funded by the Korea Ministry of Education, Science and Technology (MEST) . J. H. Park acknowledges Future-based Technology Development Program (Nano Fields) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2010-0029321 ). A. Mao and J. K. Kim contributed equally to this work.

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.

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JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Hematite modified tungsten trioxide nanoparticle photoanode for solar water oxidation

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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