Vertically-aligned Pt-decorated MoS2 nanosheets coated on TiO2 nanotube arrays enable high-efficiency solar-light energy utilization for photocatalysis and self-cleaning SERS devices

Jianing Dong; Jianying Huang; Aurelia Wang; Gill V. Biesold-McGee; Xinnan Zhang; Shouwei Gao; Shanchi Wang; Yuekun Lai; Zhiqun Lin

doi:10.1016/j.nanoen.2020.104579

Vertically-aligned Pt-decorated MoS₂ nanosheets coated on TiO₂ nanotube arrays enable high-efficiency solar-light energy utilization for photocatalysis and self-cleaning SERS devices

Jianing Dong, Jianying Huang, Aurelia Wang, Gill V. Biesold-McGee, Xinnan Zhang, Shouwei Gao, Shanchi Wang, Yuekun Lai, Zhiqun Lin

Department of Chemistry & Nanoscience

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

109 Scopus citations

Abstract

The ability to reproducibly create a surface enhanced Raman scattering (SERS) substrate renders an effective means of detecting and degrading organic contaminants. Vertically aligned (VA) nanomaterials have been extensively explored as highly efficient catalysts due to their excellent electron transportability and high concentration of exposed active edge sites. Herein, we report on a ternary ultrafast-electron-transfer heterostructure composed of Pt nanoparticles in-situ grown on VA-MoS₂ nanosheet edge sites decorated on TiO₂ nanotube arrays (NTAs) (denoted Pt/VA-MoS₂/NTAs). Compared with pristine TiO₂ NTAs, the Pt/VA-MoS₂/NTAs possess a strong resonant SERS effect for detecting rhodamine 6G and an outstanding UV-assisted self-cleaning effect, displaying an excellent photocatalytic performance under visible light irradiation. Such markedly improved performance of the ternary Pt/VA-MoS₂/TiO₂ NTAs nanocomposites can be attributed to the synergy of catalytic activity of Pt-deposited MoS₂ edge sites, the ultrafast electron transfers of VA-MoS₂ NS/TiO₂ NTAs, and the appropriate band alignment among these three constituents. As such, it represents a robust mean of developing advanced energy utilization nanocomposites for high-performance catalysts and sensors.

Original language	English
Article number	104579
Journal	Nano Energy
Volume	71
DOIs	https://doi.org/10.1016/j.nanoen.2020.104579
State	Published - May 2020

Bibliographical note

Funding Information:
The authors thank the National Natural Science Foundation of China (51972063, 51502185), 111 Project (No. D17005), and Fuzhou University Testing Fund of precious apparatus (2019T022). We also acknowledge the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Funding Information:
The authors thank the National Natural Science Foundation of China ( 51972063 , 51502185 ), 111 Project (No. D17005 ), and Fuzhou University Testing Fund of precious apparatus ( 2019T022 ). We also acknowledge the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions ( PAPD ).

Publisher Copyright:
© 2020

Keywords

Pt-decorated edge sites
Self-cleaning SERS
Vertically aligned MoS/TiO heterojunction
Visible-light photocatalysis

UN SDGs

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

Access to Document

10.1016/j.nanoen.2020.104579

Cite this

Dong, J., Huang, J., Wang, A., Biesold-McGee, G. V., Zhang, X., Gao, S., Wang, S., Lai, Y., & Lin, Z. (2020). Vertically-aligned Pt-decorated MoS₂ nanosheets coated on TiO₂ nanotube arrays enable high-efficiency solar-light energy utilization for photocatalysis and self-cleaning SERS devices. Nano Energy, 71, Article 104579. https://doi.org/10.1016/j.nanoen.2020.104579

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title = "Vertically-aligned Pt-decorated MoS2 nanosheets coated on TiO2 nanotube arrays enable high-efficiency solar-light energy utilization for photocatalysis and self-cleaning SERS devices",

abstract = "The ability to reproducibly create a surface enhanced Raman scattering (SERS) substrate renders an effective means of detecting and degrading organic contaminants. Vertically aligned (VA) nanomaterials have been extensively explored as highly efficient catalysts due to their excellent electron transportability and high concentration of exposed active edge sites. Herein, we report on a ternary ultrafast-electron-transfer heterostructure composed of Pt nanoparticles in-situ grown on VA-MoS2 nanosheet edge sites decorated on TiO2 nanotube arrays (NTAs) (denoted Pt/VA-MoS2/NTAs). Compared with pristine TiO2 NTAs, the Pt/VA-MoS2/NTAs possess a strong resonant SERS effect for detecting rhodamine 6G and an outstanding UV-assisted self-cleaning effect, displaying an excellent photocatalytic performance under visible light irradiation. Such markedly improved performance of the ternary Pt/VA-MoS2/TiO2 NTAs nanocomposites can be attributed to the synergy of catalytic activity of Pt-deposited MoS2 edge sites, the ultrafast electron transfers of VA-MoS2 NS/TiO2 NTAs, and the appropriate band alignment among these three constituents. As such, it represents a robust mean of developing advanced energy utilization nanocomposites for high-performance catalysts and sensors.",

keywords = "Pt-decorated edge sites, Self-cleaning SERS, Vertically aligned MoS/TiO heterojunction, Visible-light photocatalysis",

author = "Jianing Dong and Jianying Huang and Aurelia Wang and Biesold-McGee, {Gill V.} and Xinnan Zhang and Shouwei Gao and Shanchi Wang and Yuekun Lai and Zhiqun Lin",

note = "Funding Information: The authors thank the National Natural Science Foundation of China (51972063, 51502185), 111 Project (No. D17005), and Fuzhou University Testing Fund of precious apparatus (2019T022). We also acknowledge the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). Funding Information: The authors thank the National Natural Science Foundation of China ( 51972063 , 51502185 ), 111 Project (No. D17005 ), and Fuzhou University Testing Fund of precious apparatus ( 2019T022 ). We also acknowledge the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions ( PAPD ). Publisher Copyright: {\textcopyright} 2020",

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AU - Dong, Jianing

AU - Huang, Jianying

AU - Wang, Aurelia

AU - Biesold-McGee, Gill V.

AU - Zhang, Xinnan

AU - Gao, Shouwei

AU - Wang, Shanchi

AU - Lai, Yuekun

AU - Lin, Zhiqun

N1 - Funding Information: The authors thank the National Natural Science Foundation of China (51972063, 51502185), 111 Project (No. D17005), and Fuzhou University Testing Fund of precious apparatus (2019T022). We also acknowledge the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). Funding Information: The authors thank the National Natural Science Foundation of China ( 51972063 , 51502185 ), 111 Project (No. D17005 ), and Fuzhou University Testing Fund of precious apparatus ( 2019T022 ). We also acknowledge the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions ( PAPD ). Publisher Copyright: © 2020

PY - 2020/5

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N2 - The ability to reproducibly create a surface enhanced Raman scattering (SERS) substrate renders an effective means of detecting and degrading organic contaminants. Vertically aligned (VA) nanomaterials have been extensively explored as highly efficient catalysts due to their excellent electron transportability and high concentration of exposed active edge sites. Herein, we report on a ternary ultrafast-electron-transfer heterostructure composed of Pt nanoparticles in-situ grown on VA-MoS2 nanosheet edge sites decorated on TiO2 nanotube arrays (NTAs) (denoted Pt/VA-MoS2/NTAs). Compared with pristine TiO2 NTAs, the Pt/VA-MoS2/NTAs possess a strong resonant SERS effect for detecting rhodamine 6G and an outstanding UV-assisted self-cleaning effect, displaying an excellent photocatalytic performance under visible light irradiation. Such markedly improved performance of the ternary Pt/VA-MoS2/TiO2 NTAs nanocomposites can be attributed to the synergy of catalytic activity of Pt-deposited MoS2 edge sites, the ultrafast electron transfers of VA-MoS2 NS/TiO2 NTAs, and the appropriate band alignment among these three constituents. As such, it represents a robust mean of developing advanced energy utilization nanocomposites for high-performance catalysts and sensors.

AB - The ability to reproducibly create a surface enhanced Raman scattering (SERS) substrate renders an effective means of detecting and degrading organic contaminants. Vertically aligned (VA) nanomaterials have been extensively explored as highly efficient catalysts due to their excellent electron transportability and high concentration of exposed active edge sites. Herein, we report on a ternary ultrafast-electron-transfer heterostructure composed of Pt nanoparticles in-situ grown on VA-MoS2 nanosheet edge sites decorated on TiO2 nanotube arrays (NTAs) (denoted Pt/VA-MoS2/NTAs). Compared with pristine TiO2 NTAs, the Pt/VA-MoS2/NTAs possess a strong resonant SERS effect for detecting rhodamine 6G and an outstanding UV-assisted self-cleaning effect, displaying an excellent photocatalytic performance under visible light irradiation. Such markedly improved performance of the ternary Pt/VA-MoS2/TiO2 NTAs nanocomposites can be attributed to the synergy of catalytic activity of Pt-deposited MoS2 edge sites, the ultrafast electron transfers of VA-MoS2 NS/TiO2 NTAs, and the appropriate band alignment among these three constituents. As such, it represents a robust mean of developing advanced energy utilization nanocomposites for high-performance catalysts and sensors.

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