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Nawaz S, Khan Y, Abdelmohsen SAM, Khalid S, Björk EM, Rasheed MA, Siddiq M. Polyaniline inside the pores of high surface area mesoporous silicon as composite electrode material for supercapacitors. RSC Adv 2022; 12:17228-17236. [PMID: 35755593 PMCID: PMC9185315 DOI: 10.1039/d2ra01829b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/02/2022] [Indexed: 11/21/2022] Open
Abstract
Mesoporous silicon (mSi) obtained by the magnesiothermic reduction of mesoporous silica was used to deposit polyaniline (PANI) in its pores, the composite was tested for its charge storage application for high performance supercapacitor electrodes. The mesoporous silica as confirmed by Small Angle X-ray Scattering (SAXS) has a Brunauer-Emmett-Teller (BET) surface area of 724 m2g-1 and mean pore size of 5 nm. After magnesiothermic reduction to mSi, the BET surface area is reduced to 348 m2g-1 but the mesoporousity is retained with a mean pore size of 10 nm. The BET surface area of mesoporous silicon is among the highest for porous silicon prepared/reduced from silica. In situ polymerization of PANI inside the pores of mSi was achieved by controlling the polymerization conditions. As a supercapacitor electrode, the mSi-PANI composite exhibits better charge storage performance as compared to pure PANI and mesoporous silica-PANI composite electrodes. Enhanced electrochemical performance of the mSi-PANI composite is attributed to the high surface mesoporous morphology of mSi with a network structure containing abundant mesopores enwrapped by an electrochemically permeable polyaniline matrix.
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Affiliation(s)
- Saima Nawaz
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan +92 5190642147
- Nanoscience and Technology Department, National Centre for Physics QAU Campus, Shahdra Valley Road Islamabad 45320 Pakistan +92 512077389 +92 3455235423
| | - Yaqoob Khan
- Nanoscience and Technology Department, National Centre for Physics QAU Campus, Shahdra Valley Road Islamabad 45320 Pakistan +92 512077389 +92 3455235423
| | - Shaimaa A M Abdelmohsen
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University P. O. Box 84428 Riyadh 11681 Saudi Arabia
| | - Sadia Khalid
- Nanoscience and Technology Department, National Centre for Physics QAU Campus, Shahdra Valley Road Islamabad 45320 Pakistan +92 512077389 +92 3455235423
| | - Emma M Björk
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University SE-581 83 Linköping Sweden
| | - Muhammad Asim Rasheed
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS) Islamabad 45650 Pakistan
| | - M Siddiq
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan +92 5190642147
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Kumar V, Verma R, Satodia D, Ray D, Kuperkar K, Aswal VK, Mitchell-Koch KR, Bahadur P. Contrasting effect of 1-butanol and 1,4-butanediol on the triggered micellar self-assemblies of C 16-type cationic surfactants. Phys Chem Chem Phys 2021; 23:19680-19692. [PMID: 34525135 DOI: 10.1039/d1cp01666k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The self-assembly in aqueous solutions of three quaternary salt-based C16-type cationic surfactants with different polar head groups and identical carbon alkyl chain viz., cetylpyridinium bromide (CPB), cetyltrimethylammonium tosylate (CTAT), and cetyltriphenylphosphonium bromide (CTPPB) in the presence of 1-butanol (BuOH) and 1,4-butanediol (BTD) was investigated using tensiometry, 2D-nuclear Overhauser enhancement spectroscopy (2D-NOESY) and small angle neutron scattering (SANS) techniques. The adsorption parameters and micellar characteristics evaluated at 303.15 K distinctly showed that BuOH promotes the mixed micelle formation while BTD interfered with the micellization phenomenon. The SANS data fitted using an ellipsoid (as derived by Hayter and Penfold using the Ornstein-Zernike equation and the mean spherical approximation) and wormlike micellar models offered an insight into the micelle size/shape and aggregation number (Nagg) in the examined systems. The evaluated descriptors presented a clear indication of the morphology transition in cationic micelles as induced by the addition of the two alcohols. We also offer an investigation into the acceptable molecular interactions governing the differences in micelle morphologies, using the non-invasive 2D-NOESY technique and molecular modeling. The experimental observations elucidated from computational simulation add novelty to this work. Giving an account to the structural complexity in the three cationic surfactants, the molecular dynamics (MD) simulation was performed for CPB micelles in an aqueous solution of alcohols that highlighted the micelle solvation and structural transition, which is further complemented in terms of critical packing parameter (PP) for the examined systems.
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Affiliation(s)
- Vinod Kumar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat 395007, Gujarat, India.
| | - Rajni Verma
- Department of Chemistry, Wichita State University (WSU), Wichita, Kansas 67260-0051, USA
| | - Dwarkesh Satodia
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat 395007, Gujarat, India.
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, Maharashtra, India
| | - Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat 395007, Gujarat, India.
| | - Vinod Kumar Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, Maharashtra, India
| | - Katie R Mitchell-Koch
- Department of Chemistry, Wichita State University (WSU), Wichita, Kansas 67260-0051, USA
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Udhana-Magdalla road, Surat 395007, Gujarat, India
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Grijalva-Bustamante G, Quevedo-Robles R, del Castillo-Castro T, Castillo-Ortega M, Encinas J, Rodríguez-Félix D, Lara-Ceniceros T, Fernández-Quiroz D, Lizardi-Mendoza J, Armenta-Villegas L. A novel bile salt-assisted synthesis of colloidal polypyrrole nanoparticles. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124961] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Temperature dependence of micellization behavior of N,N′-didodecyl-N,N,N′,N′-tetramethylhexane-1,6-diammonim dibromide and 1-dodecyl-3-methylimidazolium bromide in aqueous solutions. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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