Sanjeev Kumar Ujjain

Sanjeev Kumar is an Assistant Research Scientist at Center for Advanced Sensor Technology Research, Department of Chemical and Biochemical Engineering University of Maryland, Baltimore County. ,
Title: Assistant Research Scientist, CAST


  • Ph.D., Chemistry, University of Delhi, India, 2015.
  • M.Sc., Indian Institute of Technology (ISM), India, 2009.
  • B.Sc., Chemistry, University of Delhi, India, 2006.


  • Assistant Research Scientist, University of Maryland Baltimore County, USA, 2022-present.
  • Assistant Professor, Research Initiative for Supra-Materials, Shinshu University, Japan, 2016-2022.
  • Project Scientist, National Centre for Flexible Electronics, IIT Kanpur, India, 2015-2016.
  • Research Scholar, Department of Chemistry, University of Delhi, India, 2010-2015.

Core Research Areas

  • Functional Nanomaterials
  • Electrochemistry
  • Sensors
  • Energy devices
  • Isotope gas separation
  • Membranes

Research Activities

  • Synthesis and Characterization of carbide derived carbons, zeolite & graphene/carbon nanotubes nanocomposites for adsorption-based isotope gas separation.
  • Synthesis and Characterization of graphene oxide /graphene-based nanocomposite membranes for air separation via interfacial nano-gaps.
  • Synthesis and Characterization of PDMS, PU, or Nafion based membrane with graphene/conducting polymer nanocomposites.
  • Selective carbon-etching for creating nano-windows on graphene/SWCNT surface for enhancing the diffusivity at the active electrode sites.
  • Morphology controlled growth of metal/metal oxide/mixed-metal oxide/polymer via electrochemical and wet-chemical methods.
  • Synthesis and Characterization of nano porous SWCNT and graphene aerogels and free-standing films via wet chemical and freeze-dying method.
  • Fabrication and testing of Electrochemical biosensors, Supercapacitors, batteries, and all solid-state flexible supercapacitors.
  • Fabrication and testing of Water-resilient Piezoresistive strain sensor.

Professional Memberships and Awards

  • Editorial Board member “Journal of Composites Science”, 2021-present.
  • Reviewer Board “Nanomaterials”, 2020-present.
  • Guest Editor “Chemosensors”, 2020-present.
  • Referee: ACS, RSC, Elsevier, MDPI, Taylor & Francis Science Journals. Reviewed research articles > 80, 2016-present.
  • “Best Oral Presentation” at Indo-Portuguese Workshop on Emerging Trends of Nanotechnology in Chemistry and Biology, 2016.
  • “Young Scientist Award” Indian Council of Chemists, 2014.
  • “Excellent Performance Award” at SERC School on Electrochemical System, 2011.
  • “Best Poster Presentation” award in “2nd Indo-Italian Workshop on Electrochemistry for Future Energy Solutions”, 2011.


  • Sanjeev Kumar and Krishnacharya “A super hydrophobic coating composition and coating methods” Patent No: 386750 (Patentee, IIT Kanpur), 2022.
  • Sanjeev Kumar, Katsumi Kaneko, In the oxygen separation method and a separation apparatus, Japanese Patent No.: 6978042 (Patentee, Shinshu University), 2021.
  • Sanjeev Kumar, Katsumi Kaneko, Oxygen isotope separation method, International application number: PCT/JP2021/048288, filing date 5/1/2021, 2021.
  • Preety Ahuja, Sanjeev Kumar, Katsumi Kaneko, Gas sensor element manufacturing method and trace gas detection, JP Patent 2020-121,959, 2020.

Book Chapters

  • S. K. Ujjain, Preety Ahuja, Applications of Quantum Dots in Supercapacitors: Quantum Dots: Properties and Applications (Materials Research Forum LLC) 96, 169-190, 2021.
  • S. K. Ujjain, Preety Ahuja, R. Kanojia, Green Corrosion Inhibitor for Electronics: Theory and Applications of Green Corrosion Inhibitors (Materials Research Forum LLC) 86, 204-232, 2021.
  • 2021 S. K. Ujjain, Preety Ahuja, R. Kanojia, Electrochemical Studies of Green Corrosion Inhibitors Theory and Applications of Green Corrosion Inhibitors (Materials Research Forum LLC) 86, 91-126, 2021.
  • 2020 Preety Ahuja, S. K. Ujjain, Graphene-Based Materials for Flexible Supercapacitors Self-standing Substrates (Springer), 297-326, 2020.

Recent Publications

ORCID , Google Scholar

Selected Publications

  • P. Ahuja, Sanjeev Kumar Ujjain*, R. Kukobat, K. Urita, I. Moriguchi, A. Furuse, Y. Hattori, K. Fujimoto, G. Rao, X. Ge, T. Wright, K. Kaneko, Air-permeable redox mediated transcutaneous CO2 sensor, Chemical Engineering Journal, 457, 141260, 2023.
  • S. Sharma, M. Sharma, N. Dheer, Sanjeev Kumar Ujjain, P. Ahuja, G. Singh, R. Kanojia, A Novel Leaf Extract of Sorghum Vulgare as an Eco-friendly Corrosion Inhibitor for Mild Steel Corrosion in 0.5 M H2SO4, Portugaliae Electrochimica Acta 41, 273-287, 2023.
  • H.T. Das, S. Dutta, T.E. Balaji, N. Das, P. Das, N. Dheer, R. Kanojia, P. Ahuja, Sanjeev Kumar Ujjain*, Recent Trends in Carbon Nanotube Electrodes for Flexible Supercapacitors: A Review of Smart Energy Storage Device Assembly and Performance. Chemosensors 10, 223, 2022.
  • S. K. Ujjain, A. Bagusetty, Y.Matsuda, H. Tanaka, Preety Ahuja, Katsumi Kaneko et al. Adsorption separation of heavier isotope gases in subnanometer carbon pores. Nature Communications 12, 546, 2021.
  • Preety Ahuja, S. K. Ujjain, R. Kanojia, P. Attri, Transition Metal Oxides and Their Composites for Photocatalytic Dye Degradation, J. Compos. Sci. 5 (3), 82, 2021.
  • Preety Ahuja, S. K. Ujjain, K. Urita, Katsumi Kaneko et al. Chemically and mechanically robust SWCNT based strain sensor with monotonous piezoresistive response for infrastructure monitoring, Chem. Engi. J. 388, 124174, 2020.
  • S. K. Ujjain, R. Bhatia, Preety Ahuja, Aziridine-functionalized graphene: Effect of aromaticity for aryl functional groups on enhanced power conversion efficiency of organic photovoltaic cells, J. Saudi Chem. Soc. 23, 655, 2019.
  • 2018 Preety Ahuja, S. K. Ujjain, I. Arora, Mohd. Samim, Hierarchically Grown NiO-Decorated Polyaniline-Reduced Graphene Oxide Composite for Ultrafast Sunlight-Driven Photocatalysis, ACS Omega 3, 7846, 2018.
  • A. D. Putri, N. Chotimah, Sanjeev Kumar Ujjain, Katsumi Kaneko et al. Charge-transfer mediated nanopore-controlled pyrene derivatives/graphene colloids, Carbon 139, 512, 2018.
  • Preety Ahuja, S. K. Ujjain, R. Kanojia. MnOx/C Nanocomposite: An Insight on High- Performance Supercapacitor and Non-Enzymatic Hydrogen Peroxide Detection, Appl. Surf. Sci. 404, 197-205, 2017.
  • S. K.Ujjain, Preety Ahuja, R. Bhatia, P. Attri, Printable multi-walled carbon nanotubes thin film for high performance all solid state flexible supercapacitors, Mater. Res. Bull. 83, 167-171, 2016.
  • S. K. Ujjain, Preety Ahuja, R. K. Sharma, Facile preparation of graphene nanoribbon/cobalt coordination polymer nanohybrid for non-enzymatic H2O2 sensing by dual transduction: electrochemical and fluorescence, J. Mater. Chem. B 3 (38), 7614-7622, 2015.
  • M. Trivedi, Sanjeev Kumar Ujjain, G. Singh, A. Kumar, S. K. Dubey, N. P. Rath, Syntheses, characterization, and electrochemistry of compounds containing 1-diphenylphosphino-1-(di-tert-butylphosphino) ferrocene (dppdtbpf), J. Organomet. Chem. 772, 202-209, 2014.
  • Sanjeev Kumar Ujjain, K. Deori, R. K. Sharma, S. Deka, Morphology controlled synthesis of nanoporous Co3O4 nanostructures and their charge storage characteristics in supercapacitors, ACS Appl. Mater. Interfaces 5 (21), 10665-10672, 2013.