* Fabrication of hydrogen storage materials using nanotechnology
* Interaction of nanomaterials with energetic ions
* Synthesis of thin films
25
Scopus Publications
627
Scholar Citations
12
Scholar h-index
15
Scholar i10-index
Scopus Publications
Hydrogen storage property of graphite stimulated by gamma irradiation D. Silambarasan, R. Sarika, V. Prasanna Venkatesh, K. Iyakutti, Asokan Kandasami, V. Vasu Next Materials, 2025 The hydrogen intake ability of gamma-irradiated graphite was investigated in this work. Initially, the purchased graphite powder was deposited on substrates. Then, the deposited graphite was irradiated by gamma (γ) rays with different dose strengths of 200, 500 kGy, and 1 MGy in air atmosphere and ambient pressure conditions. Morphology was investigated by transmission electron microscopy (TEM). X-ray diffraction (XRD), thermogravimetry (TGA), and Raman analyses imply the improvisation of purity in the graphite after irradiation with 200 and 500 kGy dose strengths. Irradiation of graphite with 1 MGy induced the vacancy defects in the graphitic network. The graphite irradiated with 1 MGy exhibited a hydrogen intake of 1.1 wt% at 100 ºC and ambient pressure conditions. Schematic of effect of gamma irradiation and hydrogen storage • Effect of γ-irradiation on the hydrogen storage ability of graphite is reported here. • γ-ray induced vacancy defects are found to be responsible for hydrogen intake in the graphite. • Hydrogenation was carried out at atmospheric pressure and 100 ºC. • The graphite irradiated with 1 MGy exhibit a hydrogen intake of 1.1 wt% at 100 ºC and ambient pressure conditions. • γ-irradiation is an effective tool to modify the structural properties of graphite.
Investigation of MnO2/MWCNTs nanocomposite for various applications D. Thilaga Sundari, M. Muniyalakshmi, R. Sarika, D. Silambarasan, V. Prasanna Venkatesh Next Materials, 2025 The MnO 2 /Multi-walled carbon nanotubes (MC) nanocomposite was prepared by one-pot facile synthesis process. Potassium permanganate (2.5 g), concentrated sulphuric acid (0.5 ml) were used as precursor for preparing MnO 2 and Multi-walled carbon nanotubes (MWCNTs-100 mg) was added to it and stirred at 70°C for 1 h to produce the nanocomposite. The prepared nanocomposite was studied by transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, UV–visible (UV) spectroscopy and thermal analysis. The electrochemical behaviour of prepared nanocomposite was examined by cyclic voltammetry (CV) and impedance spectroscopy. The magnetic property at room temperature (RT) was investigated using vibrating sample magnetometry (VSM). The antibacterial activity was studied against S.aureus and E.coli bacteria. The morphology revealed that, MWCNTs were decorated by cross-linked MnO 2 nanoflakes uniformly. The nanocomposite exhibited increased bandgap, enhanced thermal stability, higher specific capacitance, ferromagnetic behaviour (at RT) and improved antibacterial activities.
Synthesis and characterization of graphene oxide nanosheets M. Muniyalakshmi, K. Sethuraman, D. Silambarasan Materials Today Proceedings, 2020 Graphite is a 3-dimension carbon based material made up of millions of layers of graphene. By the oxidation of graphite using strong oxidizing agents, oxygenated functionalities are introduced in the graphite structure which not only expand the layer separation, but also make the material get dispersed in water. This property enables the graphite oxide to be exfoliated in water using sonication, ultimately producing single or few layer graphene known as graphene oxide (GO). This remains as a very important property when mixing the material with ceramic or polymer materials and trying to improve their electrical and mechanical properties. In this work, Graphene Oxide nanosheets was synthesized by modified hummer’s method. Materials such as graphite power, H2SO4 and KMnO4 solution was used as precursors. The solution formed by the precursors after desired experimental conditions was filtered and washed. Then the suspension was centrifuged and dried which resulted in Graphene Oxide nanosheets. The synthesized samples were characterized by XRD, Raman, FTIR and SEM analyses.
Hydrogen adsorption on single walled carbon nanotubes-tungsten trioxide composite D. Silambarasan, V.J. Surya, V. Vasu, K. Iyakutti, T.R. Ravindran, M. Jeyanthinath International Journal of Hydrogen Energy, 2017 In this work, hydrogen storage property of single walled carbon nanotubes-tungsten trioxide (SWCNTs-WO 3 ) composite is investigated. The composite is prepared and hydrogenated by electron beam (e-beam) evaporation technique. Hydrogenation is carried out during the preparation of the composite itself. The amount of hydrogen uptake by the composite is 2.7 wt%, which is due to the collective adsorption of hydrogen by CNTs and WO 3 nanostructured materials, the method of preparation and hydrogenation involved. The incorporated hydrogen is completely (100%) released in the temperature range of 175–305 °C which in turn infers that the hydrogenated composite is stable at room temperature. The stored hydrogen has the average binding energy of 0.4 eV and the nature of binding is found to be weak chemisorption. Spillover mechanism is attributed for the hydrogen uptake of the composite.
Gamma (γ)-ray irradiated multi-walled carbon nanotubes (MWCNTs) for hydrogen storage D. Silambarasan, V.J. Surya, K. Iyakutti, K. Asokan, V. Vasu, Y. Kawazoe Applied Surface Science, 2017 A study on hydrogen uptake performance of Gamma (γ)-ray irradiated multi-walled carbon nanotubes (MWCNTs) was conducted. Initially, the MWCNTs was irradiated by γ-rays emitted from 27 Co 60 source with different doses of 25, 50, 100, 150, and 200 kGy in air at ambient conditions. Irradiation at lower doses of 25 and 50 kGy improves the graphitic order of MWCNTs, but higher doses of 100 and 150 kGy introduces structural imperfection and at very high dose of 200 kGy, the structure becomes distorted. Thermogravimetry (TGA), X-ray diffraction (XRD), Raman spectroscopy, I-V measurements, and Transmission electron microscopy (TEM) confirm the changes in MWCNTs caused by irradiation. Further, the γ-irradiated MWCNTs was hydrogenated and the MWCNTs irradiated at 150 kGy exhibits a considerable hydrogen storage capacity of 1.2 wt.% at 100 °C and ambient pressure, while the MWCNTs irradiated at lower doses does not show any trace of hydrogenation. Raman and elemental analyses provide the evidence for hydrogenation.
Investigation of hydrogen storage in MWCNT-TiO2 composite D. Silambarasan, M. Kanmani, K. Iyakutti, M. Jeyanthinath, T.R. Ravindran, V. Vasu Physica E Low Dimensional Systems and Nanostructures, 2016 The hydrogen storage capacity of MWCNT–TiO 2 composite has been evaluated in the present work. The composite has been prepared by means of ultrasonication followed by drop casting on substrates. Morphology, structural and functional group studies of the prepared samples are carried out by transmission electron microscopy (TEM), scanning electron microscopy (SEM), powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. Then, the samples are hydrogenated in the hydrogenation chamber as a function of time. Hydrogen storage capacity of the composite sample is found to be 0.9 wt% at 100 °C. Hydrogen uptake of the composite is accounted for the spillover mechanism in CNTs–metal oxide composite. Desorption temperature range, activation energy of desorption, binding energy of hydrogen are determined from thermogravimetric (TG) analysis.
Effect of Gamma (γ) - Ray Irradiation on Synthesized Manganese Oxide (MnO2) Nanoparticles DSKA D. Thilaga Sundari, C. Anantha Prabhu, R. Sarika Indian Journal of Natural Sciences 16 (89), 92768-92775 , 2025 2025
Curcumin-Cyclodextrin Inclusion Complex Loaded Nanofibers for Lead Ion Detection DSDRS Raj Sarika* INNOVATIONS AND ADVANCES IN SCIENCE AND ENGINEERING RESEARCH 1, 158-175 , 2025 2025
Hydrogen Storage Potential of Wo3-Flg Nanocomposites: A Step Towards Clean Energy VPV M. Muniyalakshmia,R. Sarikac,D. Silambarasan* INNOVATIONS AND ADVANCES IN SCIENCE AND ENGINEERING RESEARCH 1, 138-150 , 2025 2025
Hydrogen storage property of graphite stimulated by gamma irradiation D Silambarasan, R Sarika, VP Venkatesh, K Iyakutti, A Kandasami, ... Next Materials 9, 101310 , 2025 2025 Citations: 1
Investigation of antibacterial and anticancer activities of WO3 nanostructures M Muniyalakshmi, DT Sundari, R Sarika, D Silambarasan, VP Venkatesh Solid State Communications 403, 115969 , 2025 2025
Investigation of MnO2/MWCNTs nanocomposite for various applications DT Sundari, M Muniyalakshmi, R Sarika, D Silambarasan, VP Venkatesh Next Materials 6, 100475 , 2025 2025 Citations: 4
Electrochemical Performance of Manganese Dioxide (MnO2) Nanoparticles Synthesized by Co-Precipitation Method SR Thilaga Sundari D, Silambarasan D Nanotechnology Perceptions 20 (7), 3869-3878 , 2024 2024
Synthesis and characterization of WO3-GO nanocomposite for hydrogen storage, electrochemical, antibacterial and anticancer applications M Muniyalakshmi, CA Prabhu, DT Sundari, R Sarika, D Silambarasan, ... Solid State Sciences 158, 107764 , 2024 2024 Citations: 5
Synthesis and characterization of WO3-few layer graphene nanocomposite for antibacterial and anticancer applications DS M. Muniyalakshmi, D. Thilaga Sundari, C. Anantha Prabhu, R. Sarika African Journal of Biological Sciences 6 (15), 7808-7823 , 2024 2024
Fundamentals of nanoceramics and their composites V Selvam, R Sarika, D Silambarasan, SSL Mary, KS Prakash Industrial Applications of Nanoceramics, 329-346 , 2024 2024 Citations: 2
Synthesis and characterization of TiO2 CA Prabhu, D Silambarasan, R Sarika, V Selvam Materials Today: Proceedings 64, 1793-1797 , 2022 2022 Citations: 32
Synthesis and characterization of graphene oxide nanosheets M Muniyalakshmi, K Sethuraman, D Silambarasan Materials Today: Proceedings 21, 408-410 , 2020 2020 Citations: 157
Reversible and Reproducible Hydrogen Storage in Single-Walled Carbon Nanotubes Functionalized with D Silambarasan, VJ Surya Carbon Nanotubes: Recent Progress, 331 , 2018 2018 Citations: 5
Hydrogen adsorption on single walled carbon nanotubes-tungsten trioxide composite D Silambarasan, VJ Surya, V Vasu, K Iyakutti, TR Ravindran, ... International Journal of Hydrogen Energy 42 (40), 25294-25302 , 2017 2017 Citations: 12
Gamma (γ)-ray irradiated multi-walled carbon nanotubes (MWCNTs) for hydrogen storage D Silambarasan, VJ Surya, K Iyakutti, K Asokan, V Vasu, Y Kawazoe Applied Surface Science 418, 49-55 , 2017 2017 Citations: 64
Carbon Nanotubes as Future Energy Storage System V Vasu, D Silambarasan Mechanics, Materials Science & Engineering Journal 9 (1) , 2017 2017 Citations: 3
Hydrogen Storage in Carbon nanotube based Materials - Solid State Reversible Hydrogen Storage VVKI D. Silambarasan ISBN: 978-3330007437 1, 1-124 , 2016 2016
Investigation of hydrogen storage in MWCNT–TiO2 composite D Silambarasan, M Kanmani, K Iyakutti, M Jeyanthinath, TR Ravindran, ... Physica E: Low-dimensional Systems and Nanostructures 80, 207-211 , 2016 2016 Citations: 11
Structural ordering of multi-walled carbon nanotubes (MWCNTs) caused by gamma (γ)-ray irradiation D Silambarasan, K Iyakutti, K Asokan, V Vasu AIP Conference Proceedings 1665 (1), 050088 , 2015 2015 Citations: 1
Functionalization of single-walled carbon nanotubes with uracil, guanine, thymine and l-alanine D Silambarasan, K Iyakutti, V Vasu Chemical Physics Letters 604, 83-88 , 2014 2014 Citations: 14
MOST CITED SCHOLAR PUBLICATIONS
Synthesis and characterization of graphene oxide nanosheets M Muniyalakshmi, K Sethuraman, D Silambarasan Materials Today: Proceedings 21, 408-410 , 2020 2020 Citations: 157
Single walled carbon nanotube–metal oxide nanocomposites for reversible and reproducible storage of hydrogen D Silambarasan, VJ Surya, V Vasu, K Iyakutti ACS Applied Materials & Interfaces 5 (21), 11419-11426 , 2013 2013 Citations: 80
Gamma (γ)-ray irradiated multi-walled carbon nanotubes (MWCNTs) for hydrogen storage D Silambarasan, VJ Surya, K Iyakutti, K Asokan, V Vasu, Y Kawazoe Applied Surface Science 418, 49-55 , 2017 2017 Citations: 64
Experimental investigation of hydrogen storage in single walled carbon nanotubes functionalized with borane D Silambarasan, VJ Surya, V Vasu, K Iyakutti international journal of hydrogen energy 36 (5), 3574-3579 , 2011 2011 Citations: 45
First principles studies on hydrogen storage in single-walled carbon nanotube functionalized with TiO2 M Kanmani, R Lavanya, D Silambarasan, K Iyakutti, V Vasu, Y Kawazoe Solid state communications 183, 1-7 , 2014 2014 Citations: 41
One-step process of hydrogen storage in single walled carbon nanotubes-tin oxide nano composite D Silambarasan, VJ Surya, V Vasu, K Iyakutti International journal of hydrogen energy 38 (10), 4011-4016 , 2013 2013 Citations: 41
Investigation of single-walled carbon nanotubes-titanium metal composite as a possible hydrogen storage medium D Silambarasan, VJ Surya, V Vasu, K Iyakutti International journal of hydrogen energy 38 (34), 14654-14660 , 2013 2013 Citations: 37
Synthesis and characterization of TiO2 CA Prabhu, D Silambarasan, R Sarika, V Selvam Materials Today: Proceedings 64, 1793-1797 , 2022 2022 Citations: 32
Reversible hydrogen storage in functionalized single-walled carbon nanotubes D Silambarasan, V Vasu, K Iyakutti, VJ Surya, TR Ravindran Physica E: Low-Dimensional Systems and Nanostructures 60, 75-79 , 2014 2014 Citations: 27
Functionalization of single-walled carbon nanotubes with uracil, guanine, thymine and l-alanine D Silambarasan, K Iyakutti, V Vasu Chemical Physics Letters 604, 83-88 , 2014 2014 Citations: 14
Investigation of hydrogen desorption from hydrogenated single-walled carbon nanotubes functionalized with borane D Silambarasan, V Vasu, VJ Surya, K Iyakutti IEEE transactions on nanotechnology 11 (5), 1047-1053 , 2012 2012 Citations: 14
Hydrogen adsorption on single walled carbon nanotubes-tungsten trioxide composite D Silambarasan, VJ Surya, V Vasu, K Iyakutti, TR Ravindran, ... International Journal of Hydrogen Energy 42 (40), 25294-25302 , 2017 2017 Citations: 12
Investigation of hydrogen storage in MWCNT–TiO2 composite D Silambarasan, M Kanmani, K Iyakutti, M Jeyanthinath, TR Ravindran, ... Physica E: Low-dimensional Systems and Nanostructures 80, 207-211 , 2016 2016 Citations: 11
Single-step preparation and hydrogenation of single walled carbon nanotubes-titanium dioxide composite D Silambarasan, VJ Surya, K Iyakutti, V Vasu International journal of hydrogen energy 39 (1), 391-397 , 2014 2014 Citations: 11
Computation of interaction potential of adsorbates on zigzag SWCNTs—Application to functionalization and hydrogen storage I Lakshmi, D Silambarasan, VJ Surya, M Rajarajeswari, K Iyakutti, ... International Journal of Nanoscience 10 (03), 391-396 , 2011 2011 Citations: 10
Water soluble polymer-SWCNT-based composite for hydrogen storage D Silambarasan, V Vasu, K Iyakutti IEEE Transactions on Nanotechnology 13 (2), 261-267 , 2014 2014 Citations: 9
Synthesis and characterization of WO3-GO nanocomposite for hydrogen storage, electrochemical, antibacterial and anticancer applications M Muniyalakshmi, CA Prabhu, DT Sundari, R Sarika, D Silambarasan, ... Solid State Sciences 158, 107764 , 2024 2024 Citations: 5
Reversible and Reproducible Hydrogen Storage in Single-Walled Carbon Nanotubes Functionalized with D Silambarasan, VJ Surya Carbon Nanotubes: Recent Progress, 331 , 2018 2018 Citations: 5
Investigation of MnO2/MWCNTs nanocomposite for various applications DT Sundari, M Muniyalakshmi, R Sarika, D Silambarasan, VP Venkatesh Next Materials 6, 100475 , 2025 2025 Citations: 4
Carbon Nanotubes as Future Energy Storage System V Vasu, D Silambarasan Mechanics, Materials Science & Engineering Journal 9 (1) , 2017 2017 Citations: 3