Research Papers (Prof. C.N.R. Rao): Recent submissions

Now showing items 1-20 of 877

Composition-dependent photoluminescence and electronic structure of 2-dimensional borocarbonitrides, BCXN (x=1, 5)

Moses, Kota; Shirodkar, Sharmila N.; Waghmare, Umesh V.; Rao, C. N. R. (IoP Publishing Ltd, 2014)

Layered borocarbonitrides BCN and BC5N with a wide difference in composition have been prepared by the urea route. These 2D materials show a significant difference in the photoluminescence spectra, with BCN and BC5N showing ...
Porous graphene frameworks pillared by organic linkers with tunable surface area and gas storage properties

Kumar, Ram; Suresh, Venkata M.; Maji, Tapas Kumar; Rao, C. N. R. (Royal Society of Chemistry, 2014)

We report the design and synthesis of two porous graphene frameworks (PGFs) prepared via covalent functionalization of reduced graphene oxide (RGO) with iodobenzene followed by a C-C coupling reaction. In contrast to RGO, ...
Synthesis, anion order and magnetic properties of RVO3-xNx perovskites (R = La, Pr, Nd; 0 <= x <= 1)

Oro-Sole, Judith; Clark, Lucy; Kumar, Nitesh; Bonin, William; Sundaresan, A.; Attfield, J. Paul; Rao, C. N. R.; Fuertes, Amparo (Royal Society of Chemistry, 2014)

The rare earth vanadium oxynitride perovskites RVO3-xNx (R = La, Pr, Nd; 0 <= x <= 1) have been prepared by treatment of RVO4 precursors in NH3. The ammonolysis reactions proceed through an initial reduction of RVO4 ...
Few-Layer Borocarbonitride Nanosheets: Platinum-Free Catalyst for the Oxygen Reduction Reaction

Moses, Kota; Kiran, Vankayala; Sampath, S.; Rao, C. N. R. (Wiley-V C H Verlag Gmbh, 2014)

The present study demonstrates the use of few-layer borocarbonitride nanosheets synthesized by a simple method as non-platinum cathode catalysts for the oxygen reduction reaction (ORR) in alkaline medium. Composition-dependent ...
New methods of synthesis and varied properties of carbon quantum dots with high nitrogen content

Dey, Sunita; Chithaiah, Pallellappa; Belawadi, Sunita; Biswas, Kanishka; Rao, C. N. R. (Cambridge Univ Press, 2014)

Doping of a heteroatom such as nitrogen in carbon nanomaterials provides a means to tailor their electronic properties and chemical reactivities. In this article, we present simple methods to synthesize carbon quantum dots ...
Novel features of multiferroic and magnetoelectric ferrites and chromites exhibiting magnetically driven ferroelectricity

Saha, Rana; Sundaresan, A.; Rao, C. N. R. (Royal Society of Chemistry, 2014)

A few oxides such as YMnO3, TbMnO3, YMn2O5 and BiFeO3 constituted the small family of well-characterized multiferroics until recently, but this area of research has been enlarged significantly due to the advent of a novel ...
Fabrication of large-area PbSe films at the organic-aqueous interface and their near-infrared photoresponse

Jana, Manoj K.; Murali, Banavoth; Krupanidhi, S. B.; Biswas, Kanishka; Rao, C. N. R. (Royal Society of Chemistry, 2014)

An organic-aqueous interfacial reaction at room temperature has been employed to synthesize large-area self-assembled films consisting of PbSe single crystallites. The use of the films for the low-cost fabrication of ...
Luminescence properties of boron and nitrogen doped graphene quantum dots prepared from arc-discharge-generated doped graphene samples

Dey, Sunita; Govindaraj, A.; Biswas, Kanishka; Rao, C. N. R. (Elsevier Science Bv, 2014)

Substitution of heteroatoms in graphene is known to tailor its band gap. Another approach to alter the band gap of graphene is to create zero-dimensional graphene quantum dots (GQDs). Here we present the synthesis and ...
Visible-light induced hydrogen generation with ZnO/NiO/Cd1-xZnxS (x=0.0, 0.2) heterostructures

Lingampalli, S. R.; Roy, Anand; Ikram, M.; Rao, C. N. R. (Elsevier Science Bv, 2014)

ZnO/NiO/Cd1-xZnxS (x=0.0, 0.2) heterostructures have been prepared by a simple solution-based procedure using ZnO/NiO heterostructures prepared by different methods. We obtain good hydrogen evolution activity only with ...
Visible light induced oxidation of water by rare earth manganites, cobaltites and related oxides

Naidu, B. S.; Gupta, Uttam; Maitra, Urmimala; Rao, C. N. R. (Elsevier Science Bv, 2014)

A study of the visible light induced oxidation of water by perovskite oxides of the formula LaMO3 (M = transition metal) has revealed the best activity with LaCoO3 which contains Co3+ in the intermediate-spin (IS) with one ...
Extraordinary attributes of 2-dimensional MoS2 nanosheets

Rao, C. N. R.; Maitra, Urmimala; Waghmare, Umesh V. (Elsevier Science Bv, 2014)

The discovery of the amazing properties of graphene has stimulated exploration of single- and few-layer structures of layered inorganic materials. Of all the inorganic 2D nanosheet structures, those of MoS2 have attracted ...
Excellent Performance of Few-Layer Borocarbonitrides as Anode Materials in Lithium-Ion Batteries

Sen, Sudeshna; Moses, Kota; Bhattacharyya, Aninda J.; Rao, C. N. R. (Wiley-V C H Verlag Gmbh, 2014)

Borocarbonitrides (BxCyNz) with a graphene-like structure exhibit a remarkable high lithium cyclability and current rate capability. The electrochemical performance of the BxCyNz materials, synthesized by using a simple ...
Enhanced Thermal Oxidation Stability of Reduced Graphene Oxide by Nitrogen Doping

Sandoval, Stefania; Kumar, Nitesh; Sundaresan, A.; Rao, C. N. R.; Fuertes, Amparo; Tobias, Gerard (Wiley-V C H Verlag Gmbh, 2014)

Nitrogen-doped reduced graphene oxide (N-doped RGO) samples with a high level of doping, up to 13 wt.%, have been prepared by annealing graphene oxide under a flow of pure ammonia. The presence of nitrogen within the ...
Visible- Light- Induced Generation of H2 by Nanocomposites of Few- Layer TiS2 and TaS2 with CdS Nanoparticles

Gupta, Uttam; Rao, Bolla Govinda; Maitra, Urmimala; Prasad, B. E.; Rao, C. N. R. (Wiley-V C H Verlag Gmbh, 2014)

Graphene analogues of TaS2 and TiS2 (3-4layers), prepared by Li intercalation followed by exfoliation in water, were characterized. Nanocomposites of CdS with few-layer TiS2 and TaS2 were employed for the visible-light-induced ...
Synthesis, Characterization and Properties of Single-Walled Carbon Nanohorns

Pramoda, K.; Moses, Kota; Ikram, Mohd; Vasu, K.; Govindaraj, A.; Rao, C. N. R. (Springer/Plenum Publishers, 2014)

Single-walled nanohorns (SWNHs) have been prepared by sub-merged arc discharge of graphite electrodes in liquid nitrogen. The samples were examined by scanning electron microscopy, transmission electron microscopy and Raman ...
Single-walled nanohorns and other nanocarbons generated by submerged arc discharge between carbon electrodes in liquid argon and other media

Vasu, K.; Pramoda, K.; Moses, K.; Govindaraj, A.; Rao, C. N. R. (IoP Publishing Ltd, 2014)

Arc discharge between two graphite electrodes submerged in different liquid media yields various dimensional nanocarbon structures such as 1D carbon nanotubes and 2D graphene. Single-walled carbon nanohorns (SWNHs) prepared ...
Synthesis and Characterization of Few-layer Nanosheets of GaN and Other Metal Nitrides

Sreedhara, M. B.; Vasu, K.; Rao, C. N. R. (Wiley-V C H Verlag Gmbh, 2014)

By making use of the fact that single- and few-layer nanosheets of GaS and GaSe are readily obtained by micromechanical cleavage because of their mica-like morphology, we were able to prepare GaN nanosheets by the reaction ...
Thermal Expansion, Anharmonicity and Temperature-Dependent Raman Spectra of Single- and Few-Layer MoSe2 and WSe2

Late, Dattatray J.; Shirodkar, Sharmila N.; Waghmare, Umesh V.; Dravid, Vinayak P.; Rao, C. N. R. (Wiley-V C H Verlag Gmbh, 2014)

We report the temperature-dependent Raman spectra of single-and few-layer MoSe2 and WSe2 in the range 77-700 K. We observed linear variation in the peak positions and widths of the bands arising from contributions of ...
Synthesis, properties and applications of graphene doped with boron, nitrogen and other elements

Rao, C. N. R.; Gopalakrishnan, K.; Govindaraj, A. (Elsevier Sci Ltd, 2014)

Chemical doping of graphene becomes necessary to create a band gap which is useful for various applications. Furthermore, chemical doping of elements like boron and nitrogen in graphene gives rise to useful properties. ...
Pressure-induced structural changes and insulator-metal transition in layered bismuth triiodide, BiI3: a combined experimental and theoretical study

Devidas, T. R.; Shekar, N. V. Chandra; Sundar, C. S.; Chithaiah, P.; Sorb, Y. A.; Bhadram, V. S.; Chandrabhas, Narayana; Pal, K.; Waghmare, Umesh V.; Rao, C. N. R. (IoP Publishing Ltd, 2014)

Noting that BiI3 and the well-known topological insulator (TI) Bi2Se3 have the same high symmetry parent structures, and that it is desirable to find a wide-band gap TI, we determine here the effects of pressure on the ...

Now showing items 1-20 of 877

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