Institution
National Chemical Laboratory
Facility•Pune, Maharashtra, India•
About: National Chemical Laboratory is a facility organization based out in Pune, Maharashtra, India. It is known for research contribution in the topics: Catalysis & Enantioselective synthesis. The organization has 8891 authors who have published 14837 publications receiving 387600 citations.
Topics: Catalysis, Enantioselective synthesis, Nanoparticle, Zeolite, Adsorption
Papers published on a yearly basis
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172 citations
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TL;DR: X-ray diffraction data suggest the single phase wurtzite structure for S-doped ZnO and the incorporation of sulfur expand the lattice constants of ZnNO, and the inherent relationship between PL intensity and photocatalytic activity of S- doped ZNO was discussed.
171 citations
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TL;DR: In this paper, the magnetic properties of Li0.5Fe2.5O4 nanoparticles with grain sizes ranging from 12 to 32 nm were studied. And the as-prepared sample of lithium ferrite showed a maximum saturation magnetization of 75 emu g−1.
Abstract: Fine particles of lithium ferrite were synthesized by the sol-gel method. By subsequent heat treatment at different temperatures, lithium ferrites of different grain sizes were prepared. A structural characterization of all the samples was conducted by the x-ray diffraction technique. A grain size of around 12 nm was observed for Li0.5Fe2.5O4 obtained through the sol-gel method. Magnetic properties of lithium ferrite nanoparticles with grain size ranging from 12 to 32 nm were studied. Magnetization measurements showed that Li0.5Fe2.5O4 fine particles exhibit a deviation from the predicted magnetic behaviour. The as-prepared sample of lithium ferrite showed a maximum saturation magnetization of 75 emu g−1. Variation of coercivity is attributed to the transition from multi-domain to single domain nature. Dielectric permittivity and ac conductivity of all the samples were evaluated as a function of frequency, temperature and grain size. Variation of permittivity and ac conductivity with frequency reveals that the dispersion is due to the Maxwell–Wagner type interfacial polarization.
171 citations
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TL;DR: The catalytic activity of ZIF-8 in the synthesis of styrene carbonate from carbon dioxide and styrene oxide was investigated in this paper, showing that the acid sites and nitrogen basic moieties from the imidazole linker promoted the adsorption of the CO 2 on the solid surface and its further conversion to the cyclic carbonate.
171 citations
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TL;DR: Field electron emission investigations on pulsed laser-deposited molybdenum disulfide (MoS2) thin films on W-tip and Si substrates hold great promise for the development of PLD MoS2 films in application domains such as field emitters and heterostructures for novel nanoelectronic devices.
Abstract: We report field electron emission investigations on pulsed laser-deposited molybdenum disulfide (MoS2) thin films on W-tip and Si substrates. In both cases, under the chosen growth conditions, the dry process of pulsed laser deposition (PLD) is seen to render a dense nanostructured morphology of MoS2, which is important for local electric field enhancement in field emission application. In the case of the MoS2 film on silicon (Si), the turn-on field required to draw an emission current density of 10 μA/cm2 is found to be 2.8 V/μm. Interestingly, the MoS2 film on a tungsten (W) tip emitter delivers a large emission current density of ∼30 mA/cm2 at a relatively lower applied voltage of ∼3.8 kV. Thus, the PLD-MoS2 can be utilized for various field emission-based applications. We also report our results of photodiode-like behavior in (n- and p- type) Si/PLD-MoS2 heterostructures. Finally we show that MoS2 films deposited on flexible kapton substrate show a good photoresponse and recovery. Our investigations t...
171 citations
Authors
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Name | H-index | Papers | Citations |
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Ashok Kumar | 151 | 5654 | 164086 |
Rajesh Kumar | 149 | 4439 | 140830 |
Tak W. Mak | 148 | 807 | 94871 |
John T. O'Brien | 121 | 819 | 63242 |
Clive Ballard | 117 | 736 | 61663 |
Yoshinori Tokura | 117 | 858 | 70258 |
John S. Mattick | 116 | 367 | 64315 |
Michael Dean | 107 | 419 | 63335 |
Ian G. McKeith | 107 | 468 | 51954 |
David J. Burn | 100 | 446 | 39120 |
Anil Kumar | 99 | 2124 | 64825 |
Vikas Kumar | 89 | 859 | 39185 |
Detlef W. Bahnemann | 88 | 517 | 48826 |
Gautam R. Desiraju | 88 | 458 | 45301 |
Praveen Kumar | 88 | 1339 | 35718 |