Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic Stability
Photocatalytic water splitting represents an emerging technology well positioned to satisfy the growing need for low-energy, low CO2, economically viable hydrogen gas production. As such, stable, high-surface-area electrodes are increasingly being investigated as electrodes for the photochemical con...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2019/8982672 |
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| _version_ | 1832568027666710528 |
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| author | Emmeline Kao Hyun Sung Park Xining Zang Liwei Lin |
| author_facet | Emmeline Kao Hyun Sung Park Xining Zang Liwei Lin |
| author_sort | Emmeline Kao |
| collection | DOAJ |
| description | Photocatalytic water splitting represents an emerging technology well positioned to satisfy the growing need for low-energy, low CO2, economically viable hydrogen gas production. As such, stable, high-surface-area electrodes are increasingly being investigated as electrodes for the photochemical conversion of solar energy into hydrogen fuel. We present a titanium dioxide (TiO2)/zinc oxide (ZnO) nanowire array using a hybrid hydrothermal/atomic layer deposition (ALD) for use as a solar-powered photoelectrochemical device. The nanowire array consists of single crystalline, wurtzite ZnO nanowires with a 40 nm ALD TiO2 coating. By using a TiO2 nanocoating on the high surface area-ZnO array, three advancements have been accomplished in this work: (1) high aspect ratio nanowires with TiO2 for water splitting (over 8 μm), (2) improved stability over bare ZnO nanowires during photocatalysis, and (3) excellent onset voltage. As such, this process opens up new class of the micro/nanofabrication process for making efficient photocatalytic gas harvesting systems. |
| format | Article |
| id | doaj-art-beabe142ff6e4063a0f3cc976ed7f8a8 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-beabe142ff6e4063a0f3cc976ed7f8a82025-02-03T00:59:58ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2019-01-01201910.1155/2019/89826728982672Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic StabilityEmmeline Kao0Hyun Sung Park1Xining Zang2Liwei Lin3Berkeley Sensor and Actuator Center, Berkeley, CA 94704, USABerkeley Sensor and Actuator Center, Berkeley, CA 94704, USABerkeley Sensor and Actuator Center, Berkeley, CA 94704, USABerkeley Sensor and Actuator Center, Berkeley, CA 94704, USAPhotocatalytic water splitting represents an emerging technology well positioned to satisfy the growing need for low-energy, low CO2, economically viable hydrogen gas production. As such, stable, high-surface-area electrodes are increasingly being investigated as electrodes for the photochemical conversion of solar energy into hydrogen fuel. We present a titanium dioxide (TiO2)/zinc oxide (ZnO) nanowire array using a hybrid hydrothermal/atomic layer deposition (ALD) for use as a solar-powered photoelectrochemical device. The nanowire array consists of single crystalline, wurtzite ZnO nanowires with a 40 nm ALD TiO2 coating. By using a TiO2 nanocoating on the high surface area-ZnO array, three advancements have been accomplished in this work: (1) high aspect ratio nanowires with TiO2 for water splitting (over 8 μm), (2) improved stability over bare ZnO nanowires during photocatalysis, and (3) excellent onset voltage. As such, this process opens up new class of the micro/nanofabrication process for making efficient photocatalytic gas harvesting systems.http://dx.doi.org/10.1155/2019/8982672 |
| spellingShingle | Emmeline Kao Hyun Sung Park Xining Zang Liwei Lin Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic Stability International Journal of Photoenergy |
| title | Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic Stability |
| title_full | Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic Stability |
| title_fullStr | Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic Stability |
| title_full_unstemmed | Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic Stability |
| title_short | Atomic Layer Deposition of TiO2 Nanocoatings on ZnO Nanowires for Improved Photocatalytic Stability |
| title_sort | atomic layer deposition of tio2 nanocoatings on zno nanowires for improved photocatalytic stability |
| url | http://dx.doi.org/10.1155/2019/8982672 |
| work_keys_str_mv | AT emmelinekao atomiclayerdepositionoftio2nanocoatingsonznonanowiresforimprovedphotocatalyticstability AT hyunsungpark atomiclayerdepositionoftio2nanocoatingsonznonanowiresforimprovedphotocatalyticstability AT xiningzang atomiclayerdepositionoftio2nanocoatingsonznonanowiresforimprovedphotocatalyticstability AT liweilin atomiclayerdepositionoftio2nanocoatingsonznonanowiresforimprovedphotocatalyticstability |