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Yao S, Zhang S, Zhang G, Tang Y, Zhu R, Peng Y, Chen Y, Pang H. Mesoporous Iron Family Element (Fe, Co, Ni) Molybdenum Disulfide/Carbon Nanohybrids for High-Performance Supercapacitors. Inorg Chem 2023; 62:16038-16046. [PMID: 37721422 DOI: 10.1021/acs.inorgchem.3c02167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
As the demand for fuel continues to increase, the development of energy devices with excellent performance is crucial. Supercapacitors (SCs) are attracting attention for their advantages of high specific energy and a long cycle life. At present, the development of high-performance electrode materials is the main point for research and development of SCs. Transition metal sulfides have the advantages of a large interlayer space and high theoretical capacity, making them promising electrode materials. Herein, we reported a series of ultrathin mesoporous iron family element (Fe, Co, Ni) molybdenum disulfide (MxMo1-xS2/C, M = Fe, Co, and Ni) by a template method. The original monolayer mesoporous structure of MoS2/C was maintained, and accumulation and agglomeration of MoS2/C were avoided. Based on our investigations, the best performance was that of CoxMo1-xS2/C nanohybrids. Furthermore, the concentrations of Co and Mo ions were modulated to obtain the best performance, in which Mo and Co ions were released at 1:1, 1:2, and 1:3 ratios and they were named CoxMo1-xS2/C-1, CoxMo1-xS2/C-2, and CoxMo1-xS2/C-3, respectively. Overall, these materials represent a significant improvement and show promise as high-performance SC electrode materials due to their enhanced capacitance and stability. At a current density of 0.5 A g-1, CoxMo1-xS2/C-2 has the optimal specific capacitance of 184 F g-1. CoxMo1-xS2/C-2 as an SC electrode exhibited better reversible capacity and cycling stability than MoS2/C, which is an improvement over MoS2/C regarding reversible capacity and cycling stability.
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Affiliation(s)
- Shiyi Yao
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
| | - Songtao Zhang
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
| | - Guangxun Zhang
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
| | - Yijian Tang
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
| | - Rongmei Zhu
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
| | - Yi Peng
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
| | - Yong Chen
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Testing Center, Yangzhou University, Yangzhou 225009, P. R. China
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Almohammed S, Kanoun MB, Goumri‐Said S, Alam MW, Fularz A, Alnaim A, Rice JH, Rodriguez BJ. Thermally‐controlled spherical peptide gel architectures prepared using the
pH
switch method. Pept Sci (Hoboken) 2023. [DOI: 10.1002/pep2.24304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- Sawsan Almohammed
- School of Physics University College Dublin Dublin Ireland
- Conway Institute of Biomolecular and Biomedical Research University College Dublin Dublin Ireland
| | | | - Souraya Goumri‐Said
- Physics Department, College of Science and General Studies Alfaisal University Riyadh Saudi Arabia
| | - Mir Waqas Alam
- Department of Physics, College of Science King Faisal University Al‐Ahsa Saudi Arabia
| | - Agata Fularz
- School of Physics University College Dublin Dublin Ireland
| | - Abdullah Alnaim
- Department of Physics, College of Science King Faisal University Al‐Ahsa Saudi Arabia
| | - James H. Rice
- School of Physics University College Dublin Dublin Ireland
| | - Brian J. Rodriguez
- School of Physics University College Dublin Dublin Ireland
- Conway Institute of Biomolecular and Biomedical Research University College Dublin Dublin Ireland
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Almohammed S, Fularz A, Kanoun MB, Goumri-Said S, Aljaafari A, Rodriguez BJ, Rice JH. Structural Transition-Induced Raman Enhancement in Bioinspired Diphenylalanine Peptide Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:12504-12514. [PMID: 35254049 PMCID: PMC8931724 DOI: 10.1021/acsami.1c22770] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Semiconducting materials are increasingly proposed as alternatives to noble metal nanomaterials to enhance Raman scattering. We demonstrate that bioinspired semiconducting diphenylalanine peptide nanotubes annealed through a reported structural transition can support Raman detection of 10-7 M concentrations for a range of molecules including mononucleotides. The enhancement is attributed to the introduction of electronic states below the conduction band that facilitate charge transfer to the analyte molecule. These results show that organic semiconductor-based materials can serve as platforms for enhanced Raman scattering for chemical sensing. As the sensor is metal-free, the enhancement is achieved without the introduction of electromagnetic surface-enhanced Raman spectroscopy.
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Affiliation(s)
- Sawsan Almohammed
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College,
Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Agata Fularz
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Mohammed Benali Kanoun
- Department
of Physics, College of Science, King Faisal
University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Souraya Goumri-Said
- Physics
Department, College of Science and General Studies, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia
| | - Abdullah Aljaafari
- Department
of Physics, College of Science, King Faisal
University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Brian J. Rodriguez
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College,
Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - James H. Rice
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
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