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Decoration of CdS nanoparticles on dense and multi-edge sodium titanate nanorods to form a highly efficient and stable photoanode with great enhancement in PEC performance

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Abstract
This study provided the preparation and application of a highly efficient photoanode having dense and efficient sodium titanate (NTO) nanorods decorated with CdS nanoparticles. The (NTO) nanorods were grown densely on the surface of Ti foil by a one-step hydrothermal method, which provides many step edges on the surface of the nanorods and a direct pathway for transfer of photogenerated electrons to the Ti substrate to improve the water splitting ability. The CdS nanoparticles were deposited on the surface of NTO nanorods using a simple and low-cost successive ionic layer adsorption and reaction (SILAR) method to greatly enhance the absorption of visible light. Rough surfaces of the as-synthesized nanorods were favorable sites for growing the CdS nanoparticles, which formed a tremendous connection and heterojunction at the interface between NTO and CdS. This efficient connection caused a noticeable enhancement in photocurrent density with great stability in integrated NTO/CdS photoanodes, due to the efficient separation and transfer of charge carriers. The NTO/CdS12 electrode with optimum SILAR cycles showed the highest photocurrent density around 2.37 mA cm(-2) at 1 V vs. RHE, which was 36 times higher than that of pure NTO (around 0.066 mA cm(-2)), and interestingly, this electrode retained more than 95% of its initial photocurrent density, even after 6000 seconds.
Author(s)
이병규콜라이 모르테자MasoumiZohrehTayyebiAhmadMeysam Tayebi
Issued Date
2021
Type
Article
DOI
10.1039/d1en00221j
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9265
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_rsc_primary_d1en00221j&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Decoration%20of%20CdS%20nanoparticles%20on%20dense%20and%20multi-edge%20sodium%20titanate%20nanorods%20to%20form%20a%20highly%20efficient%20and%20stable%20photoanode%20with%20great%20enhancement%20in%20PEC%20performance&offset=0&pcAvailability=true
Publisher
ENVIRONMENTAL SCIENCE-NANO
Location
영국
Language
영어
ISSN
2051-8153
Citation Volume
8
Citation Number
6
Citation Start Page
1667
Citation End Page
1679
Appears in Collections:
Engineering > Civil and Environmental Engineering
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