Thermal Lensing Effect in Laser Nanofluids Based on Poly (aniline-co-ortho phenylenediamine)@$$\text{TiO}_{2}$$ Interaction

Dadkhah, Samaneh; Rajabi, Yasser; Zare, Ehsan Nazarzadeh

doi:10.1007/s11664-021-09028-x

Cited by 11 publications

(5 citation statements)

References 69 publications

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“…[9] PANI finds its application in a spectrum of optical applications, encompassing optical protection materials, lasers, optical switching, optical sensors, nonlinear optics (NLO), and optoelectronics devices. [10][11][12][13][14][15][16] Several efforts have been made over the last two decades to design newer systems with enhanced attributes based on PANI. To improve its structural and optical properties, various inorganic materials have been reported to be integrated into PANI.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of highly delocalized π‐electrons in PANI plays a crucial role in determining its versatile properties [9] . PANI finds its application in a spectrum of optical applications, encompassing optical protection materials, lasers, optical switching, optical sensors, nonlinear optics (NLO), and optoelectronics devices [10–16] . Several efforts have been made over the last two decades to design newer systems with enhanced attributes based on PANI.…”

Section: Introductionmentioning

confidence: 99%

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The synergistic impact of multi walled carbon nanotubes on microstructural, morphological, and optical properties of polyaniline films

Mathew,

Radhakrishnan,

Pragash

et al. 2024

ChemistrySelect

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Nanocomposite of polyaniline (PANI) and multi walled carbon nanotube (MWCNT) was synthesised by ex‐situ solution mixing process in the N‐Methyl‐2‐Pyrrolidinone (NMP) solvent medium by varying the concentration of MWCNT in the PANI matrix. PANI‐MWCNT composite films were prepared by the drop casting method. The morphology, structure and chemical composition of PANI and PANI‐MWCNT nanocomposites were characterised by scanning electron microscopy (SEM), transmission electron microscopy (TEM), x‐ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT‐IR) spectra. The experimental findings suggested a favourable synergy between PANI and MWCNTs. PANI‐MWCNT nanocomposite formed as randomly oriented nanofibrous clusters was confirmed, and the bandgap of the composites was found to be gradually decreased with the increase in concentration of MWCNT in the PANI matrix. The calculation of crystallinity index, crystallite size, average d‐spacing, dislocation density, lattice strain, and inter chain separation of the samples were conducted by XRD analysis. When the MWCNT concentration increased from 0.05 % w/v to 0.5 % w/v, a rise in the degree of crystallinity from 3.39 % to 52.46 %, dislocation density from 0.03315×10−3(nm−2)to 0.07133×10−3 (nm−2) and lattice strain from 8.6821×10−3 to 12.9843×10−3, accompanied by a reduction in both crystallite size and inter‐chain separation were observed .The microcrystalline behaviour and crystalline orientation of the PANI‐MWCNT composites were correlated with the bandgap studies. The composite formation improved the thermal stability of PANI. The co‐relation between the crystallinity parameters and fine tuning of optical bandgap and the control over the defect levels were done in this study. This synergy suggests that these composites are suitable candidates for linear and nonlinear optical (NLO) applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The synergistic impact of multi walled carbon nanotubes on microstructural, morphological, and optical properties of polyaniline films

Mathew,

Radhakrishnan,

Pragash

et al. 2024

ChemistrySelect

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“…PANI does, however, have disadvantages, such as poor mechanical characteristics and insolubility in typical organic solvents. The development of PANI characteristics can be accomplished through copolymerization and composite production 18 , 19 , 21 – 23 .…”

Section: Introductionmentioning

confidence: 99%

Preparation and evaluation of some nanocarbon (NC) based composites for optoelectronic applications

Elhalawany

Abdel-karim

Saleeb

2023

Sci Rep

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Polyaniline/nanocarbon (PANI/NC) nanocomposites have been prepared by in situ polymerization of aniline monomer in the presence of a stable colloidal solution of nanocarbon NC using ammonium persulfate as an initiator and silver ions (Ag+) as oxidizing agents to produce PANI/NC and PANI/NC/Ag2O nanocomposites, respectively. The morphological studies of the formed nanocomposites have been elucidated via transmission and scanning electron microscopes (TEM and SEM). Further characterization of the prepared nanocomposites has been done via infrared spectroscopy (IR), X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), particle size distribution analysis (PSD), fluorescence microscope (FM), UV–VIS spectroscopy, and finally surface analysis. XRD results confirmed the presence of silver oxide Ag2O nanoparticles, and the obtained data is well matched with the JCPDS card number 76–1393 of silver oxide. XPS analyses have shown two prevailing characteristic peaks for Ag 3d5/2 and Ag 3d3/2 at 367.1 and 373 eV, respectively, representing Ag2O nanoparticles, which are matchable with the XRD analysis. The PSD analysis revealed that the sizes of the prepared nanocomposites are in the size range from 60 to 140 nm. The FM measurements showed luminescence from the prepared nanocomposites upon irradiation with different lights. This recommends that the fluorophores present in the prepared nanocomposites have the potential to both absorb and emit light. The AC conductivity and the dielectric permittivity of the obtained nanocomposites at room temperature and at different frequency ranges have been investigated. At higher frequency ranges, the maximum ac conductivity obtained was 1.06 × 10–2 and 2.5 × 10–2 S.Cm-1 for the PANI/NC and PANI/NC/Ag2O, respectively. As far as we know, these new nanocomposites with superior optical and electrical characteristics have not been described yet in the literature.

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“…In another report, the NF prepared with 10 wt.% CuO-PANI nanocomposites exhibited 31.34% heat transfer enhancement [ 41 ]. The thermo-optical response of poly (aniline-co-ortho phenylenediamine)@TiO 2 composite was reported [ 42 ]. Various strategies have been evolved to enhance/optimize the thermoelectric performance of PANI-based composites, which include doping the PANI structure [ 43 ], molecular self-assembly [ 44 ], and inorganic nanoparticle incorporation [ 45 ].…”

Section: Introductionmentioning

confidence: 99%

Studies on the Functional Properties of Titanium Dioxide Nanoparticles Distributed in Silyl–Alkyl Bridged Polyaniline-Based Nanofluids

Arumugam,

Velu,

Radhakrishnan

et al. 2023

Nanomaterials

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In the present work, a new kind of nanocomposite (NC)-based solid component was prepared for formulating nanofluids (NFs). The NC comprised metal oxide (titanium dioxide, TiO2) dispersed in a conducting polymer with polyaniline (PANI) and chemically linked silyl–alkyl units in it (PSA) that were designated as T-PSA NC. The NFs with ethylene glycol (EG) as a base fluid were prepared with T-PSA NCs with various compositions of TiO2 and PSA as well for various concentrations of T-PSA NCs. The scanning electron microscopic evaluation of the NC revealed that PSA deposition on TiO2 nanoparticles (NPs) decreased particle agglomeration. The PSA coating on the TiO2 NPs did not influence the crystalline structure of the TiO2 NPs, according to the X-ray diffraction patterns. The thermophysical characterization and molecular interaction features of the NFs at 303 K including a novel inorganic–organic T-PSA NC, were detailed. Furthermore, the stability of the T-PSA NC-based NFs was investigated experimentally using the zeta potential, and the particle size distribution change was analyzed using the dynamic light scattering (DLS) method. The T-PSA NCs had particle sizes that were significantly bigger than pristine PSA and pure TiO2. Most of the preparation conditions used to produce the T-PSA NCs resulted in moderately stable suspensions in EG. The results revealed that the ultrasonic velocity increased with the increase in the concentration of T-PSA NC mass % in the NFs, the refractive index and thermal conductivity increased with the increase in the concentration, and the surface tension exhibited a linear change when the ratio of mass % concentration of the T-PSA NCs increased. The combined presence of components that synergistically contribute to the electro, thermal, optical, and rheological properties is expected to attract advanced applications for NFs.

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Thermal Lensing Effect in Laser Nanofluids Based on Poly (aniline-co-ortho phenylenediamine)@$$\text{TiO}_{2}$$ Interaction

Cited by 11 publications

References 69 publications

The synergistic impact of multi walled carbon nanotubes on microstructural, morphological, and optical properties of polyaniline films

The synergistic impact of multi walled carbon nanotubes on microstructural, morphological, and optical properties of polyaniline films

Preparation and evaluation of some nanocarbon (NC) based composites for optoelectronic applications

Studies on the Functional Properties of Titanium Dioxide Nanoparticles Distributed in Silyl–Alkyl Bridged Polyaniline-Based Nanofluids

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