Electrical conductivity of silver nanoparticle doped carbon nanofibres measured by CS-AFM

Ali, Wael; Shabani, Valbone; Linke, Matthias; Sayin, Sezin; Gebert, Beate; Altinpinar, Sedakat; Hildebrandt, Marcus; Gutmann, Jochen S.; Mayer‐Gall, Thomas

doi:10.1039/c8ra04594a

Cited by 21 publications

(23 citation statements)

References 48 publications

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“…Therefore, a small amount of Ag on CB did not affect the mixing process but enhanced the electrical conductivity of rubber composites filled with Ag/CB at 10 phr. These results agreed with Ali et al, who showed significant enhancement in the electrical conductivity of carbon nanofiber by incorporating silver nanoparticles 21 . However, at higher amounts of Ag/CB, electrical conductivity of the rubber composites significantly dropped due to the instability of physically mixed Ag/CB.…”

Section: Resultssupporting

confidence: 91%

Effect of nano‐silver coated carbon black on curing, mechanical, antimicrobial, and electrical properties of natural rubber composite

Sukthavorn

Nootsuwan

Jongrungruangchok

et al. 2021

J of Applied Polymer Sci

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Nano‐silver coated carbon black (Ag/CB) was prepared via the green coating process and used as a multifunctional additive in natural rubber (NR). The Ag/CB was mixed with NR in varying amounts of 10, 20, and 30 parts per hundred rubber. Curing characteristics, morphology, mechanical and antimicrobial properties, and electrical conductivity of the rubber composites were investigated. Scorch time and cure time of the rubber compounds decreased, while the curing rate index did not change significantly with increasing amounts of Ag/CB. Hardness, tensile strength, and 100% and 300% moduli of rubber composites increased, while elongation at break decreased with increasing amounts of Ag/CB due to good dispersion of Ag/CB particles in the NR matrix. The Ag/CB particles also enhanced the antimicrobial properties of the NR composites, especially Staphylococcus aureus as the gram‐positive bacteria and Candida albicans as the fungus. Addition of Ag/CB also enhanced the electrical conductivity of the rubber composites.

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Section: Resultssupporting

confidence: 91%

Effect of nano‐silver coated carbon black on curing, mechanical, antimicrobial, and electrical properties of natural rubber composite

Sukthavorn

Nootsuwan

Jongrungruangchok

et al. 2021

J of Applied Polymer Sci

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“…First, the yeasts were seeded into the prepared medium, and cultured in a conical flask on a shaker at 28 °C and 200 rpm for 3 d. Then, the fermentation broths were collected and centrifuged to obtain the supernatants. The last step, silver nitrate solutions were then added into the obtained fermentation broths, and adjusted to a final concentration of 10 mM in a conical flask wrapped with tinfoil 26 . The color changes of the solutions were observed after 4 d culture at 28 °C in the dark 27 .…”

Section: Methodsmentioning

confidence: 99%

Biosynthesis of silver nanoparticles with antimicrobial and anticancer properties using two novel yeasts

Liu

Chen

Yang

et al. 2021

Sci Rep

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AgNPs are nanomaterials with many potential biomedical applications. In this study, the two novel yeast strains HX-YS and LPP-12Y capable of producing biological silver nanoparticles were isolated. Sequencing of ribosomal DNA-ITS fragments, as well as partial D1/D2 regions of 26S rDNA indicated that the strains are related to species from the genus Metschnikowia. The BioAgNPs produced by HX-YS and LPP-12Y at pH 5.0–6.0 and 26 °C ranged in size from 50 to 500 nm. The antibacterial activities of yeast BioAgNPs against five pathogenic bacteria were determined. The highest antibacterial effect was observed on P. aeruginosa, with additional obvious effects on E. coli ATCC8099 and S. aureus ATCC10231. Additionally, the BioAgNPs showed antiproliferative effects on lung cancer cell lines H1975 and A579, with low toxicity in Beas 2B normal lung cells. Therefore, the AgNPs biosynthesized by HX-YS and LPP-12Y may have potential applications in the treatment of bacterial infections and cancer.

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“…In addition to the excellent optical properties, AgNPs have a very high electrical conductivity. In a study by Ali et al [ 57 ], the incorporation of AgNPs into polyacrylonitrile fibers to produce carbon nanofibers (CNFs) was found to be an effective means of improving the conductive performance of the CNFs. A concentration-dependent influence of AgNPs on the enhancement in the electrical properties of CNFs was observed.…”

Section: The Optical and Electrochemical Properties Of Metal Nanoparticlesmentioning

confidence: 99%

A Review on the Development of Gold and Silver Nanoparticles-Based Biosensor as a Detection Strategy of Emerging and Pathogenic RNA Virus

Ibrahim

Jamaluddin

Tan

et al. 2021

Sensors

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The emergence of highly pathogenic and deadly human coronaviruses, namely SARS-CoV and MERS-CoV within the past two decades and currently SARS-CoV-2, have resulted in millions of human death across the world. In addition, other human viral diseases, such as mosquito borne-viral diseases and blood-borne viruses, also contribute to a higher risk of death in severe cases. To date, there is no specific drug or medicine available to cure these human viral diseases. Therefore, the early and rapid detection without compromising the test accuracy is required in order to provide a suitable treatment for the containment of the diseases. Recently, nanomaterials-based biosensors have attracted enormous interest due to their biological activities and unique sensing properties, which enable the detection of analytes such as nucleic acid (DNA or RNA), aptamers, and proteins in clinical samples. In addition, the advances of nanotechnologies also enable the development of miniaturized detection systems for point-of-care (POC) biosensors, which could be a new strategy for detecting human viral diseases. The detection of virus-specific genes by using single-stranded DNA (ssDNA) probes has become a particular interest due to their higher sensitivity and specificity compared to immunological methods based on antibody or antigen for early diagnosis of viral infection. Hence, this review has been developed to provide an overview of the current development of nanoparticles-based biosensors that target pathogenic RNA viruses, toward a robust and effective detection strategy of the existing or newly emerging human viral diseases such as SARS-CoV-2. This review emphasizes the nanoparticles-based biosensors developed using noble metals such as gold (Au) and silver (Ag) by virtue of their powerful characteristics as a signal amplifier or enhancer in the detection of nucleic acid. In addition, this review provides a broad knowledge with respect to several analytical methods involved in the development of nanoparticles-based biosensors for the detection of viral nucleic acid using both optical and electrochemical techniques.

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Electrical conductivity of silver nanoparticle doped carbon nanofibres measured by CS-AFM

Abstract: In this work, a pioneering study on the electrical properties of composite carbon nanofibres (CNFs) using current-sensitive atomic force microscopy (CS-AFM) has been demonstrated.

Cited by 21 publications

References 48 publications

Effect of nano‐silver coated carbon black on curing, mechanical, antimicrobial, and electrical properties of natural rubber composite

Effect of nano‐silver coated carbon black on curing, mechanical, antimicrobial, and electrical properties of natural rubber composite

Biosynthesis of silver nanoparticles with antimicrobial and anticancer properties using two novel yeasts

A Review on the Development of Gold and Silver Nanoparticles-Based Biosensor as a Detection Strategy of Emerging and Pathogenic RNA Virus

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