He holds the position of Reader at Department of Chemistry. He has more than 10 years of teaching and research experience in the extended field of materials chemistry. He has 25 publications in peer review journals to his credit. He completed Ph.D. on 2007 from IIT Kharagpur. The thesis work was based on studies of superparamagnetic particles. His postdoctoral work at KAIST, South Korea consisted of vapor phase deposition of silicide nanowires, their ensemble magnetic property and single nanowire magnetoresistance. He further moved to Research centre for integrated quantum electronics (RCIQE) at Hokkaido University, Japan where he worked on semiconductor nanowire growth on patterned structure and single nanowire lasers. He has special interest in popularisation of science through community outreach programs. His current research interest is focused on designing heterostructure materials for energy related electrocatalytic processes. Understanding the descriptors that control the activity of the catalysts. Development of electrochemical biosensors.
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RGNF Fellow
Ph.D. awarded in 2019
Thesis Title: Exploring N-Doped Graphene as Support Material for Electrocatalytic Applications. He is a RGNF fellow and completed her M. Sc. in chemistry in 2012 from Ravenshaw University.
Email: dasmohapatra.asish@gmail.com
CSIR-SRF fellow
Ph.D. awarded in 2020
Thesis Title: Understanding the Electrocatalytic Behavior of Nanostructured Manganese Oxide@ Graphene Based Hybrid Materials towards Oxygen Reduction Reaction.
Email: spmantry@gmail.com
RGNF Fellow
Ph.D. continuing
Her research topic is “Growth of functional molecules guided graphene oxide and their electrocatalytic Study”. She completed her M. Sc. in chemistry in 2012 from Ravenshaw University.
Email: beherasinu91@gmail.com
Ph.D. Continuing
His research topic is “Silver nanowire based heterostructures for field emission and oxygen reduction applications”.
Email: dilip.mishra77@gmail.com
Project JRF Fellow
Ph.D. Continuing
Email: rajeshbehera47@gmail.com
Ph.D. continuing
Email: subhashreemongaraj2016@gmail.com
GATE Qualified
Ph.D. Continuing
Email: amarendranayak14@gmail.com
Electro-Materials Lab
OER Activity Trend in Co2Fe LDH‐N doped graphene hybrid
In the process of optimizing the Co2Fe LDH to N-graphene (NG) ratio to get enhanced oxygen evolution reaction (OER) activity in LDH@NG hybrids, we studied the activity trend with reference to various electrochemical and physical parameters. Among the studied samples OER activity increases with increase in amount of LDH loading and surprisingly, the samples with higher OER activity also show higher value of charge transfer resistance (RCT) at the electrode electrolyte interface. The hydrophilic nature of LDH surface, uniform distribution of LDH on NG and inhibition of NG stacking is proposed to be the reason behind the observed activity trend in the hybrid catalysts.
ORR Activity Decay and Regeneration
The oxygen reduction reaction (ORR) activity for Manganese oxide (MnOx) based nanostructures primarily depend upon their morphology, phase and surface Mn valency. After a prolonged used in fuel cells or metal air batteries, MnOx undergoes irreversible change with degradation in ORR activity. A methodology was developed for electrochemical regeneration of their ORR activity by potentiostatic conditioning. It has been observed that with the decay of ORR activity the characteristc redox peaks for MnOx dissapeared and the same reappeared after a potentiostatic treatment at -0.58 V in oxygen atmosphere. It observed that decay in ORR activity was due to phase transformation to Mn3O4 with decrease in nominal Mn valency and drastic change in microstructure. Then the activity regeneration is due to regeneration of MnOOH phase and Mn valency.
Fe/Co/Ni doped MnOx @ Graphene Nanohybrid: A Comparative Study
Doping Manganese oxide with other transition metals is one of the intrinsic modifications to enhance the catalytic activity. Transition metal ions such as Fe, Co and Ni doped MnOx nanostructures on N-doped graphene increase average Mn valency thereby increasing electrocatalytic activity towards oxygen reduction. The cation doped samples show enhanced ORR activity in terms of onset potential, current density, electron transfer number, charge transfer resistance, and peroxide yield.