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Chen L, Guo S, Di S, Park E, Zhao H, Jung YM. SERS monitoring of methylene blue degradation by Au-Ag@Cu 2O-rGO nanocomposite. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 316:124354. [PMID: 38678842 DOI: 10.1016/j.saa.2024.124354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/06/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
A combination of multiple materials effectively improves and enhances the performance of the materials. Thus, a gold-silver@cuprous oxide (Au-Ag@Cu2O)-reduced graphene oxide (rGO) structure was designed and fabricated. We decorated the Au nanoparticles (NPs) on the Ag@Cu2O-rGO composite surface by a redox reaction to form a Au-Ag@Cu2O-rGO structure with two noble metals attached to a Cu2O semiconductor. A comparable Au-Ag@Cu2O structure was also fabricated. After decorating Au NPs into the Ag@Cu2O-rGO composite, the Au-Ag@Cu2O composite structure was loosened, and the surface and interior of the Cu2O shell were decorated with Au and Ag NPs. Moreover, the addition of Au NPs resulted in a proper surface plasmon resonance effect and a significant broadening of the absorption range. The loose structure increased the adsorption of the probe molecules, which increased the surface-enhanced Raman scattering (SERS) intensity. In addition, the fabricated Au-Ag@Cu2O-rGO exhibited excellent catalytic reduction of methylene blue (MB) with sodium borohydride (NaBH4). Therefore, the SERS-based monitoring of the MB degradation was obviously improved.
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Affiliation(s)
- Lei Chen
- School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
| | - Shuang Guo
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Shuhan Di
- College of Chemistry, Jilin Normal University, Siping, Jilin 136000, China
| | - Eungyeong Park
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Hongkai Zhao
- School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, China.
| | - Young Mee Jung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea; Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, Republic of Korea.
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Guo S, Park E, Byun Y, Chung H, Jin S, Park Y, Chen L, Jung YM. Effect of a Ag-rGO structure on the SERS activity of PEDOT:PSS films. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123892. [PMID: 38252985 DOI: 10.1016/j.saa.2024.123892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/28/2023] [Accepted: 01/13/2024] [Indexed: 01/24/2024]
Abstract
π-Conjugated organic semiconductors with tunable electronic structures are new prospective active substrate materials for surface-enhanced Raman scattering (SERS). However, observing higher SERS activity when using organic semiconductors as substrates could be difficult because there is no plasmonic effect of hot electrons. Here, we designed a Ag-reduced graphene oxide (rGO) structure, introduced it into a poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS) solution, and spin-coated the solution to obtain a Ag-rGO/PEDOT:PSS (ARPP) film. Our analyses demonstrate that the introduction of this Ag-rGO structure can not only enhance the electromagnetic field effect based on plasmon resonance but also improve the interaction between the target molecule and the substrate in the ARPP film. This innovative approach not only improves the SERS activity of π-conjugated organic polymers but also provides novel ideas for the preparation of other organic semiconductor-based SERS substrates.
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Affiliation(s)
- Shuang Guo
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, South Korea
| | - Eungyeong Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, South Korea
| | - Yoonseop Byun
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, South Korea
| | - Haejin Chung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, South Korea
| | - Sila Jin
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, South Korea
| | - Yeonju Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, South Korea; Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, South Korea
| | - Lei Chen
- School of Materials Science and Engineering, Jilin Jianzhu University, Changchun, China.
| | - Young Mee Jung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, South Korea; Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, South Korea.
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Guo S, Jin S, Park E, Chen L, Mao Z, Jung YM. Photo-Induced Charge Transfer Enhancement for SERS in a SiO 2-Ag-Reduced Graphene Oxide System. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5699-5705. [PMID: 33470799 DOI: 10.1021/acsami.0c17056] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Understanding and controlling the disorder in materials, especially the disorder caused by structural composition and doping effects, are important keys to studying the optical characteristics of materials. In this study, a SiO2-Ag-reduced graphene oxide (rGO) composite structure was prepared by a simple wet chemical method, in which Ag nanoparticles (NPs) and SiO2 were decorated onto the surface of rGO. The introduction of Si atoms can control not only the plasmon effect of Ag NPs but also, more importantly, the defect concentration of rGO. The formation of defects causes the rGO structure to enter a metastable state, which facilitates charge separation and transfer in the system. It is worth noting that changes in defect concentration can affect the energy band position of rGO; therefore, controlling the defect concentration can be used to achieve charge transfer resonance coupling. This study not only revealed the ultrahigh surface-enhanced Raman scattering activity of the substrate structure but also elucidated in detail the effect of the crystallinity of this rGO-based composite system on its optical properties.
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Affiliation(s)
- Shuang Guo
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, P. R. China
| | - Sila Jin
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea
| | - Eungyeong Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea
| | - Lei Chen
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, P. R. China
| | - Zhu Mao
- School of Chemistry and Life Science Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, P. R. China
| | - Young Mee Jung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea
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Yan S, Yue Q, Ma J. Rapid fabrication of silver–cuprous oxide core–shell nanowires for visible light photocatalysts. CrystEngComm 2021. [DOI: 10.1039/d0ce01430c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This work reports a novel method that enables facile fabrication of Ag–Cu2O core–shell nanowires (Ag@Cu2O NWs) for visible light photocatalysts.
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Affiliation(s)
- Siyi Yan
- Key Laboratory of UV-Emitting Materials and Technology
- Ministry of Education
- Northeast Normal University
- China
| | - Qiaohui Yue
- Key Laboratory of UV-Emitting Materials and Technology
- Ministry of Education
- Northeast Normal University
- China
| | - Jiangang Ma
- Key Laboratory of UV-Emitting Materials and Technology
- Ministry of Education
- Northeast Normal University
- China
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Kou Y, Wu T, Xing G, Huang X, Han D, Yang S, Guo C, Gao W, Yang J, Liu Y, Wang D. Highly efficient and recyclable catalyst: porous Fe 3O 4-Au magnetic nanocomposites with tailored synthesis. NANOTECHNOLOGY 2020; 31:225701. [PMID: 32167934 DOI: 10.1088/1361-6528/ab767b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, we reported the tailored design of highly efficient Fe3O4-Au magnetic nanocomposite (MNP) catalysts. Fe3O4 nanocrystals with three different morphologies have been developed with engineered amounts of urea, and the plausible mechanism has been proposed. Then by controlling the amount of Au seeds, Fe3O4-Au MNPs with different morphologies and tunable Au deposition have been realized. Characterizations including x-ray diffraction (XRD), transmission electron microscopy (TEM), Mössbauer spectra, and elemental mapping are implemented to unveil the structural and physical characteristics of the successfully developed Fe3O4-Au MNPs with different morphologies. The catalytic ability of Fe3O4-Au MNPs with different morphologies have been compared by applying them to degrading RhB and 4-NP, meanwhile the correlation between the amount of Au seeds and the turnover frequency as well as the catalytic ability of Fe3O4-Au MNPs is investigated systematically. We found that the flower-like Fe3O4-Au MNPs with 20 ml Au seeds added achieved the best degradation efficiency of 96.7%, and their catalytic ability were almost unchanged after recycling. Out study sheds the light into the tailored design of highly efficient and recyclable catalysts for RhB and 4-NP.
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Affiliation(s)
- Yichuan Kou
- College of Physics, Jilin Normal University, Siping 136000, People's Republic of China. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, People's Republic of China
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Wu T, Kou Y, Zheng H, Lu J, Kadasala NR, Yang S, Guo C, Liu Y, Gao M. A Novel Au@Cu 2O-Ag Ternary Nanocomposite with Highly Efficient Catalytic Performance: Towards Rapid Reduction of Methyl Orange Under Dark Condition. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 10:E48. [PMID: 31878173 PMCID: PMC7023264 DOI: 10.3390/nano10010048] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/12/2019] [Accepted: 12/20/2019] [Indexed: 11/16/2022]
Abstract
Au@Cu2O core-shell nanocomposites (NCs) were synthesized by reducing copper nitrate on Au colloids with hydrazine. The thickness of the Cu2O shells could be varied by adjusting the molar ratios of Au: Cu. The results showed that the thickness of Cu2O shells played a crucial role in the catalytic activity of Au@Cu2O NCs under dark condition. The Au@Cu2O-Ag ternary NCs were further prepared by a simple galvanic replacement reaction method. Moreover, the surface features were revealed by TEM, XRD, XPS, and UV-Vis techniques. Compared with Au@Cu2O NCs, the ternary Au@Cu2O-Ag NCs had an excellent catalytic performance. The degradation of methyl orange (MO) catalyzed by Au@Cu2O-Ag NCs was achieved within 4 min. The mechanism study proved that the synergistic effects of Au@Cu2O-Ag NCs and sodium borohydride facilitated the degradation of MO. Hence, the designed Au@Cu2O-Ag NCs with high catalytic efficiency and good stability are expected to be the ideal environmental nanocatalysts for the degradation of dye pollutants in wastewater.
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Affiliation(s)
- Tong Wu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Yichuan Kou
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Hui Zheng
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Jianing Lu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | | | - Shuo Yang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (S.Y.); (C.G.)
| | - Chenzi Guo
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (S.Y.); (C.G.)
| | - Yang Liu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Ming Gao
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
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Zhang X, Han B, Wang Y, Liu Y, Chen L, Zhang Y. Catalysis of Organic Pollutants Abatement Based on Pt-Decorated Ag@Cu 2O Heterostructures. Molecules 2019; 24:E2721. [PMID: 31357478 PMCID: PMC6696002 DOI: 10.3390/molecules24152721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/26/2019] [Accepted: 07/22/2019] [Indexed: 11/24/2022] Open
Abstract
Pt-decorated Ag@Cu2O heterostructures were successfully synthesized using a simple and convenient method. The Pt nanoparticle density on the Ag@Cu2O can be controlled by changing the concentration of the Pt precursor. The synthesized Ag@Cu2O-Pt nanoparticles exhibited excellent catalytic performance, which was greatly affected by changes in the Ag@Cu2O-Pt structure. To optimize the material's properties, the synthesized Ag@Cu2O-Pt nanoparticles were used to catalyze toxic pollutants and methyl orange (MO), and nontoxic products were obtained by catalytic reduction. The Pt-decorated Ag@Cu2O nanoparticles showed excellent catalytic activity, which significantly decreased the pollutant concentration when the nanoparticles were used for catalytic reduction. The redistribution of charge transfer is the nanoparticles' main contribution to the catalytic degradation of an organic pollutant. This Pt-decorated Ag@Cu2O material has unique optical and structural characteristics that make it suitable for photocatalysis, local surface plasmon resonance, and peroxide catalysis.
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Affiliation(s)
- Xiaolong Zhang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Bingbing Han
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- College of Chemistry, Jilin Normal University, Siping 136000, China
| | - Yaxin Wang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Yang Liu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Lei Chen
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
- College of Chemistry, Jilin Normal University, Siping 136000, China.
| | - Yongjun Zhang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China.
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