Browsing by Author "Haldar, Krishna Kanta"
Now showing items 21-39 of 39
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Green Synthesis of Bimetallic Au/Ag Nanostructures Using Aqueous Extract of Eichhornia crassipes for Antibacterial Activity
Halder, Arindom; Biswas, Rathindranath; Kushwaha, Prem Prakash; Halder, Krishna Kamal; Ahmed, Imtiaz; Singh, Harjinder; Kumar, Shashank; Haldar, Krishna Kanta (Springer, 2022-02-12)Biosynthesis of nanostructured materials is an arising feature of the interdisciplinary relationship between nanotechnology and biotechnology and acquiring consideration because of developing interest to foster ecologically ... -
Green synthesis of hybrid papain/Ni3(PO4)2 rods electrocatalyst for enhanced oxygen evolution reaction
Ahmed, Imtiaz; Biswas, Rathindranath; Singh, Harjinder; Patil, Ranjit A.; Varshney, Rohit; Patra, Debabrata; Ma, Yuan-Ron; Haldar, Krishna Kanta (Royal Society of Chemistry, 2022-10-21)Hydrogen production using electrocatalytic water splitting provides encouraging innovations for enduring and clean energy generation as an option in contrast to traditional energy sources. Improvement in exceptionally ... -
Interfacial design of gold/silver core-shell nanostars for plasmon-enhanced photocatalytic coupling of 4-aminothiophenol
Kaur, Gagandeep; Tanwar, Swati; Kaur, Vishaldeep; Biswas, Rathindranath; Saini, Sangeeta; Haldar, Krishna Kanta; Sen, Tapasi (Royal Society of Chemistry, 2021-10-02)Chemical reactions under mild conditions mediated by localized surface plasmon resonance (LSPR) of metals have emerged as a functional research field. In the present study, we report an interfacial designing procedure for ... -
Interfacial Engineering of CuCo2S4/g-C3N4Hybrid Nanorods for Efficient Oxygen Evolution Reaction
Biswas, Rathindranath; Thakur, Pooja; Kaur, Gagandeep; Som, Shubham; Saha, Monochura; Jhajhria, Vandna; Singh, Harjinder; Ahmed, Imtiaz; Banerjee, Biplab; Chopra, Deepak; Sen, Tapasi; Haldar, Krishna Kanta (American Chemical Society, 2021-07-29)Altering the morphology of electrochemically active nanostructured materials could fundamentally influence their subsequent catalytic as well as oxygen evolution reaction (OER) performance. Enhanced OER activity for ... -
LaCoO3Perovskite Nanoparticles Embedded in NiCo2O4Nanoflowers as Electrocatalysts for Oxygen Evolution
Kubba, Deeksha; Ahmed, Imtiaz; Kour, Pawanpreet; Biswas, Rathindranath; Kaur, Harpreet; Yadav, Kamlesh; Haldar, Krishna Kanta (American Chemical Society, 2022-11-08)It is essential to design high-efficiency, stable, and inexpensive electrocatalysts for the oxygen evolution reaction (OER). We fabricate a hybrid system of perovskite LaCoO3 with spinel NiCo2O4 denoted LaCoO3/NiCo2O4 via ... -
Mechanism of Iron Integration into LiMn1.5Ni0.5O4for the Electrocatalytic Oxygen Evolution Reaction
Ahmed, Imtiaz; Biswas, Rathindranath; Dastider, Saptarshi Ghosh; Singh, Harjinder; Mete, Shouvik; Patil, Ranjit A.; Saha, Monochura; Yadav, Ashok Kumar; Jha, Sambhu Nath; Mondal, Krishnakanta; Singh, Harishchandra; Ma, Yuan-Ron; Haldar, Krishna Kanta (American Chemical Society, 2022-09-14)Spinel-type LiMn1.5Ni0.5O4 has been paid temendrous consideration as an electrode material because of its low cost, high voltage, and stabilized electrochemical performance. Here, we demonstrate the mechanism of iron (Fe) ... -
Metal-Free Direct Access to N-Sulfonyl Amidines from Sulfonamides and Secondary Amines Involving Tandem C-N Bond Formations
Nishad, Chandra Shekhar; Haldar, Krishna Kanta; Banerjee, Biplab (American Chemical Society, 2022-08-17)We report a mild and efficient metal-free one-pot procedure for the synthesis of N-sulfonyl amidines via the direct reaction of sulfonamides with secondary amines without using any additives. A wide range of substrates ... -
Nickel oxide decorated zinc oxide composite nanorods: Excellent catalyst for photoreduction of hexavalent chromium
Singh, Simranjeet; Ahmed,Imtiaz; Haldar, Krishna Kanta (Academic Press Inc., 2018)In light of the growing interest and ability to search for new materials, we have synthesized Nickel oxide (NiO) nanoparticles decorated Zinc (ZnO) nanorods composite (NiO/ZnO) nanostructure. The NiO/ZnO heterostructure ... -
NiS/MoS2 Anchored Multiwall Carbon Nanotube Electrocatalyst for Hydrogen Generation and Energy Storage Applications
Ahmed, Imtiaz; Biswas, Rathindranath; Iqbal, Muzahir; Roy, Ayan; Haldar, Krishna Kanta (John Wiley and Sons Inc, 2023-04-05)Although sulfide-based materials are known to be efficient catalysts for oxygen evolution reactions (OER), hydrogen evolution reactions (HER), and supercapacitor applications, improving the catalytic activity of sulfide ... -
Noble copper-silver-gold trimetallic nanobowls: An efficient catalyst
Haldar, Krishna Kanta; Tanwar, S; Biswas, R; Sen, T; Lahtinen, J. (Academic Press, 2019)We demonstrated the design of tiny bowls of copper-silver-gold (Cu-Ag-Au) alloy type noble trimetallic nanocrystals with a unique shape. All the structural characterizations confirm the presence of copper (Cu), silver (Ag), ... -
Nonlinear Optical Switching and Enhanced Nonlinear Optical Response of Au−CdSe Heteronanostructures
Sreeramulu, V.; Haldar, Krishna Kanta; Patra, Amitava; Rao, D. Narayana (ACS Publications, 2016)The metal−semiconductor heterostructures have recently emerged as a new class of functional materials for their potential applications due to plasmonexciton interactions. Here, we demonstrate the nonlinear optical switching ... -
One pot synthesis of Au embedded ZnO nanorods composite heterostructures with excellent photocatalytic properties
Biswas, Rathindranath (Central University of Punjab, 2018)Here, we have designed a noble composite nanostructure by embedding Au nanoparticles into ZnO nanorods surface in one pot synthesis as a photocatalyst. The formation the composite nanostructure was confirmed by X-ray ... -
Porous nanorods by stacked NiO nanoparticulate exhibiting corn-like structure for sustainable environmental and energy applications
Manjunath, Vishesh; Bimli, Santosh; Singh, Diwakar; Biswas, Rathindranath; Didwal, Pravin N.; Haldar, Krishna Kanta; Deshpande, Nishad G.; Bhobe, Preeti A.; Devan, Rupesh S. (Royal Society of Chemistry, 2023-07-20)A porous 1D nanostructure provides much shorter electron transport pathways, thereby helping to improve the life cycle of the device and overcome poor ionic and electronic conductivity, interfacial impedance between ... -
Rational Design of Bimetallic Au/Cu Nanostructure: An Efficient Catalyst for Methanol Oxidation
Biswas, Rathindranath; Singh, Simranjeet; Ahmed, Imtiaz; Patil, Ranjit A.; Ma, Yuan-Ron; Haldar, Krishna Kanta (Wiley-VCH Verlag, 2020-12-04)We show the design of noble Au/Cu bimetallic nanostructures by a gentle solution process. Transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analysis confirm the ... -
Shell thickness matters! Energy transfer and rectification study of Au/ZnO core/shell nanoparticles
Haldar, Krishna Kanta; Sen, Tapasi (Academic Press Inc., 2016)In the present study we report the influence of shell thickness on fluorescence resonance energy transfer between Au/ZnO core-shell nanoparticles and Rhodamine 6G dye by steady-state and time-resolved spectroscopy and ... -
Synergistic photophysical and electrochemical response of Te @ PANI for energy harvesting
Rani, Pinki; Jewariya, Yogesh; Haldar, Krishna Kanta; Biswas, Rathindranath; Alegaonkar, Prashant S. (Springer, 2023-01-07)Materials with synergistic functionality are of great importance in consumer electronics. We report on the preparation and assessments of Te @ PANI composite for energy conversion and storage application. Initially, (5�15%) ... -
Tuning the Morphology of Lanthanum Cobaltite Using the Surfactant-Assisted Hydrothermal Approach for Enhancing Oxygen Evolution Catalysis
Deeksha; Kour, Pawanpreet; Ahmed, Imtiaz; Haldar, Krishna Kanta; Yadav, Kamlesh (Springer Science and Business Media Deutschland GmbH, 2022-09-01)The high consumption rate of fossil fuels to meet the global energy demands attracts the progress of innovative energy storage and conversion systems. Among them, water electrolysis shows major concern because of its great ... -
Unraveling the Role of Orbital Interaction in the Electrochemical HER of the Trimetallic AgAuCu Nanobowl Catalyst
Biswas, Rathindranath; Dastider, Saptarshi Ghosh; Ahmed, Imtiaz; Barua, Sourabh; Mondal, Krishnakanta; Haldar, Krishna Kanta (American Chemical Society, 2023-03-24)Unraveling the origins of the electrocatalytic activity of composite nanomaterials is crucial but inherently challenging. Here, we present a comprehensive investigation of the influence of different orbitals� interaction ... -
Vanadate Encapsulated Polyoxoborate Framework with [V12B18] Clusters: An Efficient Bifunctional Electrocatalyst for Oxygen and Hydrogen Evolution Reactions
Rom, Tanmay; Biswas, Rathindranath; Haldar, Krishna Kanta; Saha, Uttam; Rayaprol, Sudhindra; Paul, Avijit Kumar (American Chemical Society, 2022-07-11)Widespread contemporary attention has grown over the years in the search for a new functional and robust inorganic framework system with the advent of exciting applications. Herein, a facile strategy has been demonstrated ...