Dr. Prashil K. Narnaware

@jdiet.ac.in

Assistant Professor, Chemical Engineering
Jawaharlal Darda College of Engineering, Yavatmal

Dr. Prashil K. Narnaware


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https://researchid.co/nkprashil

EDUCATION

Dr. Prashil Narnaware has received comprehensive academic training in chemical engineering with a strong emphasis on nanotechnology, electrochemical energy systems, and catalytic materials. He earned his Doctor of Philosophy ( in Chemical Engineering from VNIT Nagpur, where his research focused on the design, synthesis, and electrochemical evaluation of nanostructured catalysts for energy conversion applications, particularly formic acid oxidation and fuel cell technologies. His Ph.D. work involved advanced nanoparticle synthesis, heterostructure development, and detailed electrochemical characterization, leading to multiple peer-reviewed research outputs.

He completed his Master of Technology (M.Tech.) in Chemical Engineering from LIT Nagpur. His postgraduate research strengthened his expertise in experimental research methodology, data analysis, and scientific writing. His Bachelor of Engineering (B.E.) in Chemical Engineering from University of Mumbai.

RESEARCH, TEACHING, or OTHER INTERESTS

Chemical Engineering, Catalysis, Electrochemistry, Colloid and Surface Chemistry
3

Scopus Publications

46

Scholar Citations

3

Scholar h-index

2

Scholar i10-index

Scopus Publications

  • Tuning the Morphology of Heterostructured Palladium/Magnetite Nanoparticles for Enhanced Catalytic Electro-oxidation of Formic Acid
    Prashil K. Narnaware, Abhijeet S. Manwar, Kailas L. Wasewar, Debalaya Sarker, C. Ravikumar
    Industrial and Engineering Chemistry Research, 2024
    The present study explores the synthesis, characterization, and comparative electrocatalytic evaluation of heterofunctionalized palladium/magnetite (iron oxide) nanoparticles (Pd/IONPs) with diverse morphologies for formic acid (FA) oxidation to enhance catalytic activity. Various morphologies, including dumbbell, hybrid, branched, and core–shell-like structures were synthesized and characterized using transmission electron microscopy (TEM), selected area electron diffraction (SAED), and vibrating sample magnetometer (VSM). In addition, polyvinylpyrrolidone (PVP)-coated Pd nanobars were synthesized and used as a control catalyst to compare the performance of the heterostructured Pd/IONPs. The electrocatalytic activity of these particles was investigated via cyclic voltammetry (CV) to reveal structure–function relationships in heterogeneous catalysts. Among the different morphologies, branched Pd/octopod-shaped IONPs demonstrated superior catalytic activity and carbon monoxide (CO) poisoning tolerance in FA oxidation. This is attributed to the high-energy {113} facets in the arms of the IONP octopods, which facilitated the attachment of many Pd atoms and promoted a synergistic catalytic effect. The increased exposure of active sites on these facets enabled more efficient FA oxidation pathways, as evidenced by a higher ratio of anodic direct oxidation peak current density (Ia1) to anodic indirect oxidation peak current density (Ia2) and greater endurance against CO poisoning measured as the ratio of Ia1 to cathodic direct oxidation peak current density (Ib). These findings highlight the critical role of NP morphology in catalyst design for advancing energy conversion and storage technologies.
  • Influence of solvents, reaction temperature, and aging time on the morphology of iron oxide nanoparticles
    Prashil K. Narnaware, C. Ravikumar
    Inorganic and Nano Metal Chemistry, 2022
    Prashil K. Narnaware & C. Ravikumar*Department of Chemical Engineering, Colloids and Nanomaterials Laboratory, Visvesvaraya National Institute of Technology, Nagpur, India
  • Mechanistic Insights into the Formation and Growth of Anisotropic-Shaped Wüstite-Spinel Core-Shell Iron Oxide Nanoparticles in a Coordinating Solvent
    Prashil K. Narnaware, C. Ravikumar
    Journal of Physical Chemistry C, 2020
    Wüstite (FeO)–spinel (magnetite, Fe3O4/maghemite, γ-Fe2O3) core–shell iron oxide nanoparticles (IONPs) of shapes cuboctahedron, cube, and octopods were successfully synthesized by thermal decomposition of an iron oleate precursor conducted using a bulky coordinating solvent, tri-n-octylamine in the presence of oleic acid. The shape of particles was kinetically controlled by varying the aging time of particles at the reaction temperatures 320, 350, and 365 °C. With increasing reaction temperatures, we find that the particle shape evolves from a cuboctahedron to a cube to an octopod. To explain the shape transition, we propose the formation mechanisms of differently shaped particles at these reaction temperatures by accounting the relative rate of iron oxide monomer deposition onto the {111} facets over surface diffusion of the deposited monomers majorly toward {100} facets of the growing crystals. We elucidate that at increasing temperatures, the monomer deposition rate increases over the surface diffusion rate, which leads to the shape transition. Further, we propose the growth mechanisms of differently shaped particles at these temperatures based on the estimated timescales of growth events such as diffusion-controlled growth, Ostwald ripening growth, and Brownian coagulation growth in comparison to the experimental aging time. We find that at 320 °C, the coagulation growth time scale is large as compared to the experimental aging time; hence, particles at 320 °C grow via diffusion-controlled growth and Ostwald ripening growth events. In contrast, at 350 and 365 °C, the coagulation growth timescales are smaller than the experimental aging time, and the particles grow via all of the growth events. The present work provides insights into the understanding of large-sized differently shaped IONPs formed in the thermal decomposition route either by the coordination of the reaction solvent or chemical additives (capping agents) to the specific facet of growing crystals.

RECENT SCHOLAR PUBLICATIONS

  • Tuning the Morphology of Heterostructured Palladium/Magnetite Nanoparticles for Enhanced Catalytic Electro-oxidation of Formic Acid
    PK Narnaware, AS Manwar, KL Wasewar, D Sarker, C Ravikumar
    Industrial & Engineering Chemistry Research, doi: 10.1021/acs.iecr.4c02612 , 2024
    2024
    Citations: 2
  • Influence of Solvents, Reaction Temperature and Aging Time on the Morphology of Iron Oxide Nanoparticles
    PK Narnaware, C Ravikumar
    Inorganic and Nano-Metal Chemistry 52, doi: 10.1080/24701556.2021.2025107 , 2022
    2022
    Citations: 7
  • Mechanistic Insights into the Formation and Growth of Anisotropic-Shaped Wüstite–Spinel Core–Shell Iron Oxide Nanoparticles in a Coordinating Solvent
    PK Narnaware, C Ravikumar
    The Journal of Physical Chemistry C 124 (45), 25010-25027 , 2020
    2020
    Citations: 19
  • A method of preparing iron oxide nanoparticles of controlled-shapes and a tunable size
    PK Narnaware, C Ravikumar
    IN Patent App. 201,921,036,489 , 2019
    2019
  • Blended composites of chitosan: adsorption profile for mitigation of toxic Pb (II) ions from water
    AH Gedam, PK Narnaware, V Kinhikar
    Chitin-Chitosan-Myriad Funct Sci Technol 6, 99-118 , 2018
    2018
    Citations: 16
  • Formulation development, characterization and evaluation of liquisolid tablet containing orlistat
    S Gaikwad, M Lonare, D Lonare, M Tajne, PK Narnaware
    International Journal of Creative Research Thoughts (IJCRT) 6 (1), 142-152 , 2018
    2018
  • Bio-availability enhancement of poorly water soluble drugs
    S Gaikwad, M Lonare, D Lonare, P kapse, PK Narnaware, A Khedulkar, ...
    International Research Journal of Engineering and Technology (IRJET) 5 (1 … , 2018
    2018
    Citations: 2

MOST CITED SCHOLAR PUBLICATIONS

  • Mechanistic Insights into the Formation and Growth of Anisotropic-Shaped Wüstite–Spinel Core–Shell Iron Oxide Nanoparticles in a Coordinating Solvent
    PK Narnaware, C Ravikumar
    The Journal of Physical Chemistry C 124 (45), 25010-25027 , 2020
    2020
    Citations: 19
  • Blended composites of chitosan: adsorption profile for mitigation of toxic Pb (II) ions from water
    AH Gedam, PK Narnaware, V Kinhikar
    Chitin-Chitosan-Myriad Funct Sci Technol 6, 99-118 , 2018
    2018
    Citations: 16
  • Influence of Solvents, Reaction Temperature and Aging Time on the Morphology of Iron Oxide Nanoparticles
    PK Narnaware, C Ravikumar
    Inorganic and Nano-Metal Chemistry 52, doi: 10.1080/24701556.2021.2025107 , 2022
    2022
    Citations: 7
  • Tuning the Morphology of Heterostructured Palladium/Magnetite Nanoparticles for Enhanced Catalytic Electro-oxidation of Formic Acid
    PK Narnaware, AS Manwar, KL Wasewar, D Sarker, C Ravikumar
    Industrial & Engineering Chemistry Research, doi: 10.1021/acs.iecr.4c02612 , 2024
    2024
    Citations: 2
  • Bio-availability enhancement of poorly water soluble drugs
    S Gaikwad, M Lonare, D Lonare, P kapse, PK Narnaware, A Khedulkar, ...
    International Research Journal of Engineering and Technology (IRJET) 5 (1 … , 2018
    2018
    Citations: 2
  • A method of preparing iron oxide nanoparticles of controlled-shapes and a tunable size
    PK Narnaware, C Ravikumar
    IN Patent App. 201,921,036,489 , 2019
    2019
  • Formulation development, characterization and evaluation of liquisolid tablet containing orlistat
    S Gaikwad, M Lonare, D Lonare, M Tajne, PK Narnaware
    International Journal of Creative Research Thoughts (IJCRT) 6 (1), 142-152 , 2018
    2018