Microwave-assisted synthesis of L-cysteine-capped nickel nanoparticles for catalytic reduction of 4-nitrophenol

Kalwar, Nazar Hussain; Nafady, Ayman; Soomro, Razium Ali; Sirajuddin, Sirajuddin; Sherazi, Syed Tufail Hussain; Khaskheli, Abdul Rauf; Hallam, K

doi:10.1007/s12598-015-0475-8

Cited by 6 publications

(2 citation statements)

References 45 publications

(46 reference statements)

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“…The synthesis of metallic nanoparticles (NP) was carried out following a modified methodology from Kalwar et al [ 49 ]. Briefly, in a beaker, 9 mL of ethylene glycol, 0.6 mL of sodium alginate (10 mM) and 0.3 mL of NaCO 3 were added (0.1 M), mixed and the pH was adjusted at 11, 10 and 12.5 for copper, silver and gold nanoparticles synthesis, respectively.…”

Section: Methodsmentioning

confidence: 99%

Facile and rapid detection of respiratory syncytial virus using metallic nanoparticles

2016

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BackgroundRespiratory syncytial virus (RSV) causes severe respiratory infection in infants, children and elderly. Currently, there is no effective vaccine or RSV specific drug for the treatment. However, an antiviral drug ribavirin and palivizumab is prescribed along with symptomatic treatment. RSV detection is important to ensure appropriate treatment of children. Most commonly used detection methods for RSV are DFA, ELISA and Real-time PCR which are expensive and time consuming. Newer approach of plasmonic detection techniques like localized surface plasmon resonance (LSPR) spectroscopy using metallic nanomaterials has gained interest recently. The LSPR spectroscopy is simple and easy than the current biophysical detection techniques like surface-enhanced Raman scattering (SERS) and mass-spectroscopy.ResultsIn this study, we utilized LSPR shifting as an RSV detection method by using an anti-RSV polyclonal antibody conjugated to metallic nanoparticles (Cu, Ag and Au). Nanoparticles were synthesized using alginate as a reducing and stabilizing agent. RSV dose and time dependent LSPR shifting was measured for all three metallic nanoparticles (non-functionalized and functionalized). Specificity of the functionalized nanoparticles for RSV was evaluated in the presence Pseudomonas aeruginosa and adenovirus. We found that functionalized copper nanoparticles were efficient in RSV detection. Functionalized copper and silver nanoparticles were specific for RSV, when tested in the presence of adenovirus and P. aeruginosa, respectively. Limit of detection and limit of quantification values reveal that functionalized copper nanoparticles are superior in comparison with silver and gold nanoparticles.ConclusionsThe study demonstrates successful application of LSPR for RSV detection, and it provides an easy and inexpensive alternative method for the potential development of LSPR-based detection devices.Electronic supplementary materialThe online version of this article (doi:10.1186/s12951-016-0167-z) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Facile and rapid detection of respiratory syncytial virus using metallic nanoparticles

2016

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“…Metal nanoparticles possess strange catalytic properties with tremendous increase in electron transfer ability and other properties due to their larger surface areas, various shapes and higher energies as compared to their bulk counterparts. They have the best capabilities to be functionalized with the help of capping agents like antibiotics, [17][18][19] drugs, 20 amino acids, 21 and so on.…”

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confidence: 99%

Cephradine-Capped Gold Nanoparticle Modified Glassy Carbon Electrode for Trace Level Sensing of Triphenyltin Hydroxide

Memon

Sirajuddin

Nafady

et al. 2020

J. Electrochem. Soc.

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Synthesis of highly stable gold nanoparticles (AuNps) was accomplished using cephradine (Cep) drug as the capping molecule and sodium borohydride as the reducing agent. Characterization studies such as ultraviolet-visible (UV-vis) spectroscopy confirmed the formation of AuNps while fourier transform infra-red (FT-IR) spectroscopy showed the interaction of AuNps with Cep. The size and shape of Cep-AuNps were investigated using atomic force microscopy (AFM) while their crystallinity was determined through X-ray diffractometry (XRD). The synthesized Cep-AuNps, after getting deposited on a glassy carbon electrode (GCE), proved as a highly responsive sensor for low-level detection of triphenyltin hydroxide (TPTH) using cyclic voltammetry (CV) as the determining mode in stirred solution. The developed sensor linearly responded to TPTH in the range of 1-80 nM with a lower detection limit (LDL) of 0.12 nM and R 2 value of 0.9948 under optimized conditions. Importantly, the sensor was highly stable and reproducible, showing a relative standard deviation (RSD) value of 1.1% based on 15 replicative runs and proved to be extremely selective for TPTH with negligible interference in the presence of expected interfering species. The developed sensor was effectively utilized for monitoring TPTH in natural water samples.

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Facile pH-Dependent Synthesis and Characterization of Catechol Stabilized Silver Nanoparticles for Catalytic Reduction of 4-Nitrophenol

Gebru

Cui

et al. 2017

Catal Lett

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Microwave-assisted synthesis of L-cysteine-capped nickel nanoparticles for catalytic reduction of 4-nitrophenol

Cited by 6 publications

References 45 publications

Facile and rapid detection of respiratory syncytial virus using metallic nanoparticles

Facile and rapid detection of respiratory syncytial virus using metallic nanoparticles

Cephradine-Capped Gold Nanoparticle Modified Glassy Carbon Electrode for Trace Level Sensing of Triphenyltin Hydroxide

Facile pH-Dependent Synthesis and Characterization of Catechol Stabilized Silver Nanoparticles for Catalytic Reduction of 4-Nitrophenol

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