3C-SiC nanocrystals/TiO2 nanotube heterostructures with enhanced photocatalytic performance

J. Zhang; L. Z. Liu; L. Yang; Z. X. Gan; X. L. Wu; Paul K. Chu

doi:10.1063/1.4882164

3C-SiC nanocrystals/TiO₂ nanotube heterostructures with enhanced photocatalytic performance

J. Zhang, L. Z. Liu, L. Yang, Z. X. Gan, X. L. Wu, Paul K. Chu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

p-type ultrathin 3C-SiC nanocrystals are coated on heat-treated n-type TiO₂ nanotube arrays formed by electrochemical etching of Ti sheets to produce heterostructured photocatalysts. Depending on the amounts of 3C-SiC nanocrystals on the TiO₂ nanotubes, photocatalytic degradation of organic species can be enhanced. The intrinsic electric field induced by the heterojunction promotes separation of the photoexcited electrons-holes in both the TiO₂ nanotubes and 3C-SiC nanocrystals. Hence, holes can more effectively travel to the surface of 3C-SiC nanocrystals and there are more electrons on the surface of TiO₂ nanotubes consequently forming more ^•O₂ ^- and ^•OH species to degrade organic molecules. © 2014 AIP Publishing LLC.

Original language	English
Article number	231902
Journal	Applied Physics Letters
Volume	104
Issue number	23
DOIs	https://doi.org/10.1063/1.4882164
Publication status	Published - 9 Jun 2014

Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Zhang, L. Z. Liu, L. Yang, Z. X. Gan, X. L. Wu, and Paul K. Chu , "3C-SiC nanocrystals/TiO2 nanotube heterostructures with enhanced photocatalytic performance", Appl. Phys. Lett. 104, 231902 (2014) and may be found at https://doi.org/10.1063/1.4882164.

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title = "3C-SiC nanocrystals/TiO2 nanotube heterostructures with enhanced photocatalytic performance",

abstract = "p-type ultrathin 3C-SiC nanocrystals are coated on heat-treated n-type TiO2 nanotube arrays formed by electrochemical etching of Ti sheets to produce heterostructured photocatalysts. Depending on the amounts of 3C-SiC nanocrystals on the TiO2 nanotubes, photocatalytic degradation of organic species can be enhanced. The intrinsic electric field induced by the heterojunction promotes separation of the photoexcited electrons-holes in both the TiO2 nanotubes and 3C-SiC nanocrystals. Hence, holes can more effectively travel to the surface of 3C-SiC nanocrystals and there are more electrons on the surface of TiO2 nanotubes consequently forming more •O2 - and •OH species to degrade organic molecules. {\textcopyright} 2014 AIP Publishing LLC.",

author = "J. Zhang and Liu, {L. Z.} and L. Yang and Gan, {Z. X.} and Wu, {X. L.} and Chu, {Paul K.}",

year = "2014",

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T1 - 3C-SiC nanocrystals/TiO2 nanotube heterostructures with enhanced photocatalytic performance

AU - Zhang, J.

AU - Liu, L. Z.

AU - Yang, L.

AU - Gan, Z. X.

AU - Wu, X. L.

AU - Chu, Paul K.

PY - 2014/6/9

Y1 - 2014/6/9

N2 - p-type ultrathin 3C-SiC nanocrystals are coated on heat-treated n-type TiO2 nanotube arrays formed by electrochemical etching of Ti sheets to produce heterostructured photocatalysts. Depending on the amounts of 3C-SiC nanocrystals on the TiO2 nanotubes, photocatalytic degradation of organic species can be enhanced. The intrinsic electric field induced by the heterojunction promotes separation of the photoexcited electrons-holes in both the TiO2 nanotubes and 3C-SiC nanocrystals. Hence, holes can more effectively travel to the surface of 3C-SiC nanocrystals and there are more electrons on the surface of TiO2 nanotubes consequently forming more •O2 - and •OH species to degrade organic molecules. © 2014 AIP Publishing LLC.

AB - p-type ultrathin 3C-SiC nanocrystals are coated on heat-treated n-type TiO2 nanotube arrays formed by electrochemical etching of Ti sheets to produce heterostructured photocatalysts. Depending on the amounts of 3C-SiC nanocrystals on the TiO2 nanotubes, photocatalytic degradation of organic species can be enhanced. The intrinsic electric field induced by the heterojunction promotes separation of the photoexcited electrons-holes in both the TiO2 nanotubes and 3C-SiC nanocrystals. Hence, holes can more effectively travel to the surface of 3C-SiC nanocrystals and there are more electrons on the surface of TiO2 nanotubes consequently forming more •O2 - and •OH species to degrade organic molecules. © 2014 AIP Publishing LLC.

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DO - 10.1063/1.4882164

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