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Kurrey R, Deb MK, Shrivas K. Surface enhanced infra-red spectroscopy with modified silver nanoparticles (AgNPs) for detection of quaternary ammonium cationic surfactants. NEW J CHEM 2019. [DOI: 10.1039/c9nj01795j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel surface enhanced infra-red spectroscopy (SEIRS) method with silver nanoparticles (AgNPs) assisted by single drop microextraction (SDME) was developed for detection of total mixed quaternary ammonium cationic surfactants (QACS) in water samples.
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Affiliation(s)
- Ramsingh Kurrey
- School of Studies in Chemistry
- Pt. Ravishankar Shukla University
- Raipur-492 010
- India
| | - Manas Kanti Deb
- School of Studies in Chemistry
- Pt. Ravishankar Shukla University
- Raipur-492 010
- India
| | - Kamlesh Shrivas
- School of Studies in Chemistry
- Pt. Ravishankar Shukla University
- Raipur-492 010
- India
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O'Regan C, Zhu X, Zhong J, Anand U, Lu J, Su H, Mirsaidov U. CTAB-Influenced Electrochemical Dissolution of Silver Dendrites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3601-3607. [PMID: 27017834 DOI: 10.1021/acs.langmuir.6b00037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Dendrite formation on the electrodes of a rechargeable battery during the charge-discharge cycle limits its capacity and application due to short-circuits and potential ignition. However, understanding of the underlying dendrite growth and dissolution mechanisms is limited. Here, the electrochemical growth and dissolution of silver dendrites on platinum electrodes immersed in an aqueous silver nitrate (AgNO3) electrolyte solution was investigated using in situ liquid-cell transmission electron microscopy (TEM). The dissolution of Ag dendrites in an AgNO3 solution with added cetyltrimethylammonium bromide (CTAB) surfactant was compared to the dissolution of Ag dendrites in a pure aqueous AgNO3 solution. Significantly, when CTAB was added, dendrite dissolution proceeded in a step-by-step manner, resulting in nanoparticle formation and transient microgrowth stages due to Ostwald ripening. This resulted in complete dissolution of dendrites and "cleaning" of the cell of any silver metal. This is critical for practical battery applications because "dead" lithium is known to cause short circuits and high-discharge rates. In contrast to this, in a pure aqueous AgNO3 solution, without surfactant, dendrites dissolved incompletely back into solution, leaving behind minute traces of disconnected silver particles. Finally, a mechanism for the CTAB-influenced dissolution of silver dendrites was proposed based on electrical field dependent binding energy of CTA(+) to silver.
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Affiliation(s)
- Colm O'Regan
- Centre for BioImaging Sciences, Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543
- Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117551
- Centre for Advanced 2D Materials, National University of Singapore , 6 Science Drive 2, Singapore 117546
| | - Xi Zhu
- Division of Materials Science, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798
| | - Jun Zhong
- Centre for BioImaging Sciences, Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543
- Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117551
| | - Utkarsh Anand
- Centre for BioImaging Sciences, Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543
- Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117551
- Centre for Advanced 2D Materials, National University of Singapore , 6 Science Drive 2, Singapore 117546
- NanoCore, National University of Singapore , 4 Engineering Drive 3, Singapore 117576
| | - Jingyu Lu
- Centre for BioImaging Sciences, Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543
- Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117551
- Centre for Advanced 2D Materials, National University of Singapore , 6 Science Drive 2, Singapore 117546
- NanoCore, National University of Singapore , 4 Engineering Drive 3, Singapore 117576
| | - Haibin Su
- Division of Materials Science, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798
| | - Utkur Mirsaidov
- Centre for BioImaging Sciences, Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543
- Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117551
- Centre for Advanced 2D Materials, National University of Singapore , 6 Science Drive 2, Singapore 117546
- NanoCore, National University of Singapore , 4 Engineering Drive 3, Singapore 117576
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