TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties
In this work, nanorods of CdS, CdSe, and CdSeS are deposited by chemical vapor deposition on TiO2 nanorod arrays, and the photoelectrochemical (PEC) performance of the heterostructures is studied comprehensively. It is found that nanorods-shaped CdS are superior to nanoparticles as the photosensitiz...
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sg-ntu-dr.10356-990412020-03-07T12:34:45Z TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties Luo, Jingshan Ma, Lin He, Tingchao Ng, Chin Fan Wang, Shijie Sun, Handong Fan, Hong Jin School of Physical and Mathematical Sciences In this work, nanorods of CdS, CdSe, and CdSeS are deposited by chemical vapor deposition on TiO2 nanorod arrays, and the photoelectrochemical (PEC) performance of the heterostructures is studied comprehensively. It is found that nanorods-shaped CdS are superior to nanoparticles as the photosensitizer. The difference in the photosensitizing effect to TiO2 nanorods among CdS, CdSe, and CdSeS alloy nanorods is studied using optical and electrochemical techniques. The energy levels of these heterostructure photoelectrodes are constructed based on X-ray photoelectron spectroscopy (XPS) and diffused reflectance spectra measurements. The current–time profile with chopped light condition, in combination with time-resolved photoluminescence spectroscopy, reveals that the TiO2/CdS electrode has the lowest carrier recombination rate, highest electron injection efficiency, and highest chemical stability. Nevertheless, in terms of the overall PEC performance (photocurrent level and stability), we propose the TiO2/CdSSe electrode is most favorable. 2013-11-05T05:33:57Z 2019-12-06T20:02:37Z 2013-11-05T05:33:57Z 2019-12-06T20:02:37Z 2012 2012 Journal Article Luo, J., Ma, L., He, T., Ng, C. F., Wang, S., Sun, H., et al. (2012). TiO2/(CdS, CdSe, CdSeS) Nanorod Heterostructures and Photoelectrochemical Properties. The Journal of Physical Chemistry C, 116(22), 11956-11963. https://hdl.handle.net/10356/99041 http://hdl.handle.net/10220/17263 10.1021/jp3031754 en The journal of physical chemistry C |
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In this work, nanorods of CdS, CdSe, and CdSeS are deposited by chemical vapor deposition on TiO2 nanorod arrays, and the photoelectrochemical (PEC) performance of the heterostructures is studied comprehensively. It is found that nanorods-shaped CdS are superior to nanoparticles as the photosensitizer. The difference in the photosensitizing effect to TiO2 nanorods among CdS, CdSe, and CdSeS alloy nanorods is studied using optical and electrochemical techniques. The energy levels of these heterostructure photoelectrodes are constructed based on X-ray photoelectron spectroscopy (XPS) and diffused reflectance spectra measurements. The current–time profile with chopped light condition, in combination with time-resolved photoluminescence spectroscopy, reveals that the TiO2/CdS electrode has the lowest carrier recombination rate, highest electron injection efficiency, and highest chemical stability. Nevertheless, in terms of the overall PEC performance (photocurrent level and stability), we propose the TiO2/CdSSe electrode is most favorable. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Luo, Jingshan Ma, Lin He, Tingchao Ng, Chin Fan Wang, Shijie Sun, Handong Fan, Hong Jin |
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Luo, Jingshan Ma, Lin He, Tingchao Ng, Chin Fan Wang, Shijie Sun, Handong Fan, Hong Jin |
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Luo, Jingshan Ma, Lin He, Tingchao Ng, Chin Fan Wang, Shijie Sun, Handong Fan, Hong Jin TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties |
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Luo, Jingshan |
title |
TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties |
title_short |
TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties |
title_full |
TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties |
title_fullStr |
TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties |
title_full_unstemmed |
TiO2/(CdS, CdSe, CdSeS) nanorod heterostructures and photoelectrochemical properties |
title_sort |
tio2/(cds, cdse, cdses) nanorod heterostructures and photoelectrochemical properties |
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2013 |
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https://hdl.handle.net/10356/99041 http://hdl.handle.net/10220/17263 |
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