Preparation, Characterization and Properties of Newly Synthesized SnO2-Polycarbazole Nanocomposite via Room Temperature Solution Phase Synthesis Process

Das, Madhurima; Roy, Somenath

doi:10.1016/j.matpr.2019.07.573

Cited by 14 publications

(11 citation statements)

References 29 publications

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“…This is because CuO or Fe 2 O 3 nanoparticles absorbs partly incident radiation by their free electrons and due to the strong interaction between polymer and dopant nanopartiles. The blue shift on a small scale with increase in CuO wt% is in agreement with the reports, PCz/SnO 2 [25].…”

Section: Uv-vis Absorption Analysissupporting

confidence: 92%

“…The crystallite size, D was determined from XRD patterns using Debye Scherer's formula showed in Eqn (1) and micro strain, ε using Eqn (2) [25],…”

Section: Resultsmentioning

confidence: 99%

“…The FTIR has been analyzed to know different functional groups developed in the composites due to interaction between constituents such as PCz and CuO and, PCz and [25]. The presence of the stretching band at 1227 cm −1 is attributed to C=N and the peak at 1316 cm −1 is attributed to C-H out of plane bending vibration of aromatic ring.…”

Section: Ftir Analysismentioning

confidence: 99%

“…The sharp band at 1444 cm −1 may be due to ring stretching vibration of carbazole [27]. The bands at 918 cm −1 and 1598 cm −1 are assigned to =CH out of plane and stretching mode of aromatic alkene respectively [21,25]. A strong absorption band at 562 cm −1 and at 602 cm −1 in the composites con rms incorporation of Cu-O and Fe-O vibrational modes respectively [21,23].…”

Section: Ftir Analysismentioning

confidence: 99%

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Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Talari

Raghavendra

Malge

2021

Preprint

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Polycarbazole (PCz) has been synthesized by chemical oxidation method using APS as an oxidizing agent and PCz/CuO and PCz/Fe2O3 nanocomposites by in situ polymerization method for different wt% of CuO and Fe2O3 at room temperature. XRD patterns confirmed crystalline nature of samples. FTIR indicated strong interaction between PCz and nano fillers. The morphological and optical absorption studies were carried out using SEM and UV-Vis respectively. Addition of CuO or Fe2O3 to PCz decreased its direct and indirect band gaps. However, band gap showed a small change with dopant contents up to 30%. Urbach energy decreased with the addition of dopants. But Urbach energy of the composites increased with increasing dopants content from 10 to 30%. DC conductivity of PCz and its nanocomposites has been measured by following two probe technique in the temperature range from 300 K to 423 K. he conductivity of both the nanocomposites is found to be less than the pure PCz and it is found to increase with wt% of CuO or Fe2O3 as the case may be. The activation energy has been determined by fitting Arrhenius expression to the dc conductivity data at high temperature. The activation energy of polycarbazole is determined to be less than that of the composites. In both the composites, activation energy decreased and conductivity increased with the increase of dopant content.

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Section: Uv-vis Absorption Analysissupporting

confidence: 92%

“…The crystallite size, D was determined from XRD patterns using Debye Scherer's formula showed in Eqn (1) and micro strain, ε using Eqn (2) [25],…”

Section: Resultsmentioning

confidence: 99%

Section: Ftir Analysismentioning

confidence: 99%

Section: Ftir Analysismentioning

confidence: 99%

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Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Talari

Raghavendra

Malge

2021

Preprint

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“…A strong bond at around 620-671 cm − 1 was detected which can be attributed to the anti-symmetric vibrations of Sn-O-Sn band (Begum and Ahmaruzzaman, 2018;Begum et al, 2016). A broad bond at the 3399-3442 cm − 1 and moderate bond at 1637-1657 cm − 1 might be related to stretching vibration and bending vibration of hydroxyl groups (-OH), respectively, which exists on the surface of SnO 2 preparations due to the physical adsorption of H 2 O molecules (Begum and Ahmaruzzaman, 2018;Das and Roy, 2019;Jahnavi et al, 2019;Luque et al, 2020). The peak at 2923-2925 cm − 1 detected in all selected SnO 2 preparations can be related to the C-H asymmetric stretching (Begum and Ahmaruzzaman, 2018).…”

Section: Surface Properties and Particles Size Distributionmentioning

confidence: 96%

Synthesis and characterization of SnO2 crystalline nanoparticles: A new approach for enhancing the catalytic ozonation of acetaminophen

Rashidashmagh

Bennani

Tizghadam-Ghazani

et al. 2021

Journal of Hazardous Materials

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A novel sol-gel method was employed in this study to efficiently synthesize SnO 2 nanoparticles to catalyze the ozonation of acetaminophen (ACT) from aqueous solutions. The influence of various parameters including Sn source, type of capping and alkaline agents, and calcination temperature on the catalytic activity of the SnO 2 preparations was investigated. The SnO 2 nanoparticles prepared by tin tetrachloride as Sn source, NaOH as gelatin agent, CTAB as capping agent and at calcination temperature of 550 • C (SnNaC-550) exhibited the maximum performance in the catalysis of ACT. The optimized catalyst (SnNaC-550) had spherical-homogeneous and cubic-shaped nanocrystalline particles with 5.5 nm mean particle size and a BET surface area of 81 m 2 /g, which resulted in 98% degradation and 84% mineralization of 50 mg/L ACT at 20 and 30 min reaction time, respectively when combined with ozonation (COP). Based on the radical scavenger experiments, • OH was the major oxidizing agent involved in the removal of ACT. LC/MS analysis showed that short-chain carboxylic acids were the main intermediates. Furthermore, the SnNaC-550 catalytic activity was preserved after four successive cycles. Collectively, the new method has the potential to efficiently synthesize stable and reusable SnO 2 nanoparticles to catalyze the ozonation of ACT from aquatic environments.

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Synthesis and photoluminescence properties of polycarbazole/tin oxide (PCz/SnO2) polymer nanocomposites

Horti

Kamatagi²,

Patil

et al. 2020

Polym. Bull.

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Preparation, Characterization and Properties of Newly Synthesized SnO2-Polycarbazole Nanocomposite via Room Temperature Solution Phase Synthesis Process

Cited by 14 publications

References 29 publications

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Synthesis and characterization of SnO2 crystalline nanoparticles: A new approach for enhancing the catalytic ozonation of acetaminophen

Synthesis and photoluminescence properties of polycarbazole/tin oxide (PCz/SnO2) polymer nanocomposites

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