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One-pot synthesis of Ag-iron oxide/reduced graphene oxide nanocomposite via hydrothermal treatment
Joshi, M.K.,Pant, H.R.,Kim, H.J.,Kim, J.H.,Kim, C.S. Elsevier 2014 Colloids and surfaces. A, Physicochemical and engi Vol.446 No.-
A multifunctional silver-iron oxide/reduced graphene oxide (Ag-Fe<SUB>3</SUB>O<SUB>4</SUB>/RGO) nanocomposite was prepared by facile, green and one-pot synthesis using hydrothermal treatment of aqueous solution containing graphene oxide (GO), iron(II) chloride tetrahydrate, silver nitrate, and ethanol. This aqueous solution was heated at 130<SUP>o</SUP>C for 3h where simultaneous reduction of GO and crystallization of metal and metal oxide NPs was simply carried out. Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), infra-red, Raman, and X-ray diffraction indicated the formation of Ag-Fe<SUB>3</SUB>O<SUB>4</SUB>/RGO nanocomposite. The catalytic activity and antibacterial capacity of nanocomposite were studied by reduction of 4-nitrophenol and destruction of Escherichia coli, respectively. Results indicated that as-synthesized nanocomposite has high catalytic and antibacterial capacity with good reusability. Therefore, the obtained nanocomposite from this facile one-pot synthesis method exhibit great potential in environmental remediation.
Joshi, M.K.,Pant, H.R.,Liao, N.,Kim, J.H.,Kim, H.J.,Park, C.H.,Kim, C.S. Academic Press 2015 JOURNAL OF COLLOID AND INTERFACE SCIENCE - Vol.453 No.-
In this study, a fly ash based composite, Ag-iron oxide/fly ash, was synthesized via a facile one-pot hydrothermal process using fly ash, ferrous chloride, and silver nitrate as precursors. Field emission scanning electron microscopy (FE-SEM), EDX, transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FTIR), Photoluminescence (PL) and Brunauer-Emmett-Teller (BET) surface area measurement confirmed the formation of composite particle. FA provided a suitable surface for the in-situ deposition of Fe<SUB>3</SUB>O<SUB>4</SUB> and Ag NPs during hydrothermal treatment. As a result, the particle size of Fe<SUB>3</SUB>O<SUB>4</SUB> and Ag NPs was sufficiently decreased, and the surface area of the NPs as well as, a whole matrix was increased. The antimicrobial activity of the composite was accessed by Escherichia coli inhibition assay. Lead(II) ion adsorption efficiency of the composite was analyzed from a series of batch adsorption experiments (the effects of concentration, contact time, pH and adsorbent dose on the adsorption of Pb(II) ion from aqueous solution). Results indicated that as-synthesized composite has high antibacterial capacity, and the metal ions uptake efficiency compared to fly ash particle. Furthermore, incorporation Fe<SUB>3</SUB>O<SUB>4</SUB> NPs onto the fly ash make it easily separable from a reaction system using an external magnet. The composite synthesis protocol is a simple method that utilizes a readily available industrial byproduct to produce a unique composite for environmental remediation.
Measurement of the branching fractions forB0→Ds*+π−andB0→Ds*−K+decays
Joshi, N. J.,Aziz, T.,Trabelsi, K.,Adachi, I.,Aihara, H.,Arinstein, K.,Aulchenko, V.,Aushev, T.,Bakich, A. M.,Balagura, V.,Barberio, E.,Bay, A.,Belous, K.,Bhardwaj, V.,Bischofberger, M.,Bondar, A.,Boz American Physical Society 2010 PHYSICAL REVIEW D - Vol.81 No.3
Joshi Deepa,Kashmira J.Gohil,Joshi Deepa 대한약침학회 2023 Journal of pharmacopuncture Vol.26 No.1
Objectives: Murraya paniculata (family-Rutaceae), popularly known as orange jasmine, is the most important evergreen plant. The Rutaceae family is economically significant due to its diverse edible fruits and essential oils. Methods: Murraya paniculata extracts (MPE) of leaf have been shown to include phenolic compounds, highly oxygenated flavonoids, flavanones, sesquiterpenoids, polymethoxy glycosides, and coumarins. Cyclocitral, methyl salicylate, trans-nerolidol, cubenol, isogermacrene, -cadinol, and cubeb-11-ene are all abundant in MPE. The usages of various parts of this plant, such as bark, leaves and flower, as a remedy for a variety of ailments as widely recorded in the traditional literature. The plant has anti-diabetic, anti-obesity, antibacterial, anti-implantation, anti-oxidative, cytotoxic, anti-diarrheal, antidepressant and anti-anxiety properties and many others. Results: The goal of the review is to reignite interest in this potential plant, encouraging researchers to continue their research in order to uncover novel therapeutic compounds for the treatment and management of a range of infections. The current review provided a comprehensive overview of this traditional unique plant. Conclusion: The review paves a way for exploring its active chemical elements with substantial pharmacological values further for potential benefits of mankind.
Upper chromospheric magnetic field of a sunspot penumbra: observations of fine structure
Joshi, J.,Lagg, A.,Solanki, S. K.,Feller, A.,Collados, M.,Orozco Suá,rez, D.,Schlichenmaier, R.,Franz, M.,Balthasar, H.,Denker, C.,Berkefeld, T.,Hofmann, A.,Kiess, C.,Nicklas, H.,Pastor Yabar, A Springer-Verlag 2016 Astronomy and astrophysics Vol.596 No.-
Electrically Insulative Performances of Ceramic and Clay Films Deposited via Supersonic Spraying
Lee, J. G.,Kim, D. Y.,Joshi, B. N.,Lee, J. H.,Lee, T. K.,Kim, J. s.,Yang, D. h.,Kim, W. Y.,Al-Deyab, S. S.,Yoon, S. S. Springer Science + Business Media 2016 Journal of thermal spray technology Vol.25 No.4
<P>Supersonic spray coating techniques were applied to deposit ceramic and clay particles as films for use in electrical insulation. TiO2 and Al2O3 ceramics were aerosol-deposited under vacuum while kaolinite, montmorillonite, and bentonite clays were deposited by cold spraying in open air. The electrical resistivity of Al2O3 and TiO2 were similar to 10(9) and similar to 10(8) Omega cm, respectively. The resistivity of kaolinite and montmorillonite were similar to 10(12) Omega cm. Bentonite showed the lowest electrical resistivity of similar to 10(9) Omega cm among the clays because of the high cation exchange capacity of the material. The film surface morphologies and mechanical properties in the form of hardness and scratchability were also investigated.</P>