Microwave-assisted synthesis of ZnO decorated acid functionalized carbon nanotubes with improved specific capacitance

Chakraborty, Sohini; Simon, Remya; Zac, R. Antonia Trisha; Vadakkekara, Anoop; Mary, Nicolas

doi:10.1007/s10800-021-01621-6

Cited by 7 publications

(3 citation statements)

References 47 publications

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“…CNT-COOH/ZnO nanocomposite was prepared by the coprecipitation method reported by us earlier. [31,32] Zinc nitrate and CNT-COOH was taken in the ratio of 1 : 1 and it was stirred at 50 °C to obtain a homogenous dispersion. The pH was maintained at 10 by adding 1 m NaOH dropwise to the above solution.…”

Section: Preparation Of Acid Functionalised Carbon Nanotubes/zno Nano...mentioning

confidence: 99%

Synergistic Effect of ZnO and Acid‐Functionalised Carbon Nanotubes on Improving the Specific Capacitance of Poly(ortho‐Phenylenediamine‐co‐Aniline)‐Based Wearable Electronics

et al. 2023

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The fabrication of highly conducting composites which can be seamlessly integrated into fabric substrates is exceedingly imperative for the development of versatile wearable electronics with long cycling stability and high specific capacitance. Previously, our group has reported the synthesis of poly(ortho‐phenylenediamine‐co‐aniline) using microwave irradiation and we have evaluated the electrochemical properties of both the copolymer and its nanocomposite with acid functionalized carbon nanotubes as wearable electronics. Herein, we design a nanocomposite of zinc oxide decorated acid functionalized carbon nanotubes and the aforementioned copolymer with the aim to evaluate the simultaneous effects of pseudocapacitance and electrical double layer capacitance in the copolymer matrix. The samples were comprehensively characterized using various techniques. These materials were coated on fabric substrates to evaluate their applicability as wearable electronics. A high specific capacitance of 225.95 F g−1 at 0.50 A g−1 was obtained and 88 % of the initial capacitance was retained after 1000 cycles. The in vitro cytotoxicity studies for the nanocomposite showed lower cytotoxicity between the concentration ranges of 50–200 μg/mL. Combination of biocompatibility and enhanced electrochemical performance establishes the unprecedented application of these devices in the field of biocompatible wearable electronics.

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Section: Preparation Of Acid Functionalised Carbon Nanotubes/zno Nano...mentioning

confidence: 99%

Synergistic Effect of ZnO and Acid‐Functionalised Carbon Nanotubes on Improving the Specific Capacitance of Poly(ortho‐Phenylenediamine‐co‐Aniline)‐Based Wearable Electronics

et al. 2023

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“…It was then dried at 70 °C in a hot air oven. [28] The Microwave assisted polymerisation of o-phenylenediamine is represented in 2g of Poly (o-phenylene diamine) was dissolved, and 0.3g Mn3O4 was dispersed in 10 mL of tetrahydrofuran by sonicating for 2 hours. It was then added in drops to the polymer solution and kept stirring for 28 hours to evaporate the solvent.…”

Section: Green Synthesis Of Mn3o4 Nanoparticles Using the Skin Of Mor...mentioning

confidence: 99%

High-Performance Wearable Supercapacitors with the Enhanced Antimicrobial and Cytotoxic Activity of Poly(o-phenylenediamine)/Mn 3O4 Composite

S.,

Chakraborty,

Sam

et al. 2023

Preprint

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The development of flexible and wearable supercapacitors (SCs) has recently garnered a lot of attention owing to their ease of fabrication, low cost, flexible integration into textiles, long cycle life, fast charging and discharging, high efficiency and ability to bridge the energy and power gap between conventional capacitors and batteries. The present study focuses on the functionalization of Poly(o-phenylenediamine) with green-synthesized manganese oxide nanoparticles. They were characterized using spectroscopic techniques such as UV-Visible spectroscopy, Fourier Transform-Infrared spectroscopy, X-Ray Diffraction studies, and Scanning Electron Microscopy to confirm the incorporation of metal oxide nanoparticles into the polymer matrix. Thermal analysis was performed using Thermogravimetry Analysis and Differential Scanning Calorimetry to analyse the thermal stability. The electrochemical performance of these materials was studied using cyclic voltammetry, chronopotentiometry, and impedance spectroscopy techniques. A large specific capacitance of 213 Fg-1 was achieved at a current density of 1 Ag-1 for the polymer nanocomposite and a capacitance retention of 89% even after 1000 cycles. These materials also exhibited enhanced antimicrobial and cytotoxic activity, thereby enabling them to function as wearable supercapacitor devices.

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“…These properties are why their synthesis has aroused much attention and various synthesis processes have been developed to obtain high-quality NPs with the desired physical and chemical features [ 10 , 11 ]. Different synthesis methods have been proposed to produce ZnO and doped ZnO NPs such as the coprecipitation method [ 12 ], the hydrothermal method [ 13 ], the sol-gel method, the microwave-assisted method [ 14 ], and the solid-state reaction [ 15 ]. Among the different methods, the sol-gel route presents many advantages such as good stoichiometric control in precursor solutions, facility of compositional changes, customizable microstructure, relatively low annealing temperatures, and simple and cheap equipment [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Antimicrobial and Anticancer Peculiarities of Ytterbium and Cerium Co-Doped Zinc Oxide Nanoparticles

Hannachi

Khan

Slimani

et al. 2022

Biology

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Zinc oxide nanoparticles (ZnO NPs) are a promising platform for their use in biomedical research, especially given their anticancer and antimicrobial activities. This work presents the synthesis of ZnO NPs doped with different amounts of rare-earth ions of ytterbium (Yb) and cerium (Ce) and the assessment of their anticancer and antimicrobial activities. The structural investigations indicated a hexagonal wurtzite structure for all prepared NPs. The particle size was reduced by raising the amount of Ce and Yb in ZnO. The anticancer capabilities of the samples were examined by the cell viability MTT assay. Post 48-h treatment showed a reduction in the cancer cell viability, which was x = 0.00 (68%), x = 0.01 (58.70%), x = 0.03 (80.94%) and x = 0.05 (64.91%), respectively. We found that samples doped with x = 0.01 and x = 0.05 of Yb and Ce showed a better inhibitory effect on HCT-116 cancer cells than unadded ZnO (x = 0.00). The IC50 for HCT-116 cells of Ce and Yb co-doped ZnO nanoparticles was calculated and the IC50 values were x = 0.01 (3.50 µg/mL), x = 0.05 (8.25 µg/mL), x = 0.00 (11.75 µg/mL), and x = 0.03 (21.50 µg/mL). The treatment-doped ZnO NPs caused apoptotic cell death in the HCT-116 cells. The nanoparticles showed inhibitory action on both C. albicans and E. coli. It can be concluded that doping ZnO NPs with Yb and Ce improves their apoptotic effects on cancer and microbial cells.

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Microwave-assisted synthesis of ZnO decorated acid functionalized carbon nanotubes with improved specific capacitance

Cited by 7 publications

References 47 publications

Synergistic Effect of ZnO and Acid‐Functionalised Carbon Nanotubes on Improving the Specific Capacitance of Poly(ortho‐Phenylenediamine‐co‐Aniline)‐Based Wearable Electronics

Synergistic Effect of ZnO and Acid‐Functionalised Carbon Nanotubes on Improving the Specific Capacitance of Poly(ortho‐Phenylenediamine‐co‐Aniline)‐Based Wearable Electronics

High-Performance Wearable Supercapacitors with the Enhanced Antimicrobial and Cytotoxic Activity of Poly(o-phenylenediamine)/Mn 3O4 Composite

In Vitro Antimicrobial and Anticancer Peculiarities of Ytterbium and Cerium Co-Doped Zinc Oxide Nanoparticles

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