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Ji S, Dong J, Ji M, Zou W, Yin S, Chen Z, Xia J. Rapid dual-channel electrons transfer via synergistic effect of LSPR effect and build-in electric field in Z-scheme W18O49/BiOBr heterojunction for organic pollutants degradation. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Quan Y, Su R, Yang S, Chen L, Wei M, Liu H, Yang J, Gao M, Li B. In-situ surface-enhanced Raman scattering based on MTi 20 nanoflowers: Monitoring and degradation of contaminants. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:125209. [PMID: 33517057 DOI: 10.1016/j.jhazmat.2021.125209] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/29/2020] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
Real-time and in-situ monitoring of chemical reactions has attracted great attention in many fields. In this work, we in-situ monitored the photodegradation reaction process of methylene blue (MB) by Surface enhanced Raman scattering (SERS) technique. An effective and versatile SERS platform assembled from MoS2 nanoflowers (NFs) and TiO2 nanoparticles (NPs) was prepared successfully. The optimized MoS2/TiO2 substrate (MTi20) exhibits not only an ultra-high SERS response but also the excellent catalytic degradation performance to the contaminant MB, which provided a new material for real-time and in-situ monitoring the photodegradation process. Experiments prove that the detection limit is as low as 10-13 M, and degradation rate is as high as 97.2% in 180 s, respectively. And the activity of the substrate kept in the air for 90 days is almost unchanged. Furthermore, as a practical SERS substrate, MTi20 can also detect trace amounts of other harmful substances including malachite green (MG), bisphenol A (BPA) and endosulfan. Thus, this study come up with a new orientation at the real-time and in-situ monitoring of photocatalytic reaction and may be applied in environmental monitoring and food security fields in the future.
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Affiliation(s)
- Yingnan Quan
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping 136000, PR China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun 130103, PR China
| | - Rui Su
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping 136000, PR China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun 130103, PR China
| | - Shuo Yang
- College of Science, Changchun University, Changchun 130022, PR China
| | - Lei Chen
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping 136000, PR China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun 130103, PR China
| | - Maobin Wei
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping 136000, PR China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun 130103, PR China
| | - Huilian Liu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping 136000, PR China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun 130103, PR China
| | - Jinghai Yang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping 136000, PR China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun 130103, PR China
| | - Ming Gao
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping 136000, PR China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun 130103, PR China.
| | - Baizhi Li
- School of pharmaceutical sciences, Jilin University, Changchun 130012, China
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Cong S, Liu X, Jiang Y, Zhang W, Zhao Z. Surface Enhanced Raman Scattering Revealed by Interfacial Charge-Transfer Transitions. Innovation (N Y) 2020; 1:100051. [PMID: 34557716 PMCID: PMC8454671 DOI: 10.1016/j.xinn.2020.100051] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 10/09/2020] [Indexed: 12/20/2022] Open
Abstract
Surface enhanced Raman scattering (SERS) is a fingerprint spectral technique whose performance is highly dependent on the physicochemical properties of the substrate materials. In addition to the traditional plasmonic metal substrates that feature prominent electromagnetic enhancements, boosted SERS activities have been reported recently for various categories of non-metal materials, including graphene, MXenes, transition-metal chalcogens/oxides, and conjugated organic molecules. Although the structural compositions of these semiconducting substrates vary, chemical enhancements induced by interfacial charge transfer are often the major contributors to the overall SERS behavior, which is distinct from that of the traditional SERS based on plasmonic metals. Regarding charge-transfer-induced SERS enhancements, this short review introduces the basic concepts underlying the SERS enhancements, the most recent semiconducting substrates that use novel manipulation strategies, and the extended applications of these versatile substrates.
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Affiliation(s)
- Shan Cong
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123, China
| | - Xiaohong Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Yuxiao Jiang
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123, China
| | - Wei Zhang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Zhigang Zhao
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123, China
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Defect Engineering Enhances the Charge Separation of CeO 2 Nanorods toward Photocatalytic Methyl Blue Oxidation. NANOMATERIALS 2020; 10:nano10112307. [PMID: 33233419 PMCID: PMC7700514 DOI: 10.3390/nano10112307] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/23/2022]
Abstract
Defect-rich photocatalytic materials with excellent charge transfer properties are very popular. Herein, Sm-doped CeO2 nanorods were annealed in a N2 atmosphere to obtain the defective Sm-doped CeO2 photocatalysts (Vo–Sm–CeO2). The morphology and structure of Vo–Sm–CeO2 were systematically characterized. The Vo–Sm–CeO2 nanorods demonstrated an excellent photodegradation performance of methyl blue under visible light irradiation compared to CeO2 nanorods and Sm–CeO2. Reactive oxygen species including OH, ·O2−, and h+ were confirmed to play a pivotal role in the removal of pollutants via electron spin resonance spectroscopy. Doping Sm enhances the conductivity of CeO2 nanorods, benefiting photogenerated electrons being removed from the surface reactive sites, resulting in the superior performance.
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