Structural, Dielectric, and Electrochemical Properties of Lithium Triflate Doped Ghatti Gum/Xanthan Gum/PVA Solid Polymer Electrolytes for Supercapacitors Sekar Snekha, Duraikkan Vanitha, Karuppasamy Sundaramahalingam, Abdul Samad Shameem, Nallaperumal Nallamuthu, Arumugam Murugan, Muthaiah Shellaiah Crystals, 2026 A novel Lithium triflate-incorporated Solid Polymer Electrolyte (SPE) has been developed by using the optimized blend of Ghatti Gum (GG) and Xanthan Gum (XG) with a biodegradable synthetic polymer, Polyvinyl alcohol (PVA), ethylene glycol as a plasticizer, and formaldehyde as a cross-linker for energy storage applications. They are examined by X-ray diffraction, Fourier transform infrared spectroscopy, and electrochemical impedance analysis. The frequency-dependent conductivity adheres to Joshner’s universal power law, with the TF10 composition achieving the higher ionic conductivity of 2.73 × 10−5 S cm−1. Temperature-dependent conductivity confirms Arrhenius-type behavior and shows a low activation energy of 0.15 eV that supports facile ion transport. The conduction process in TF10 follows the Correlated Barrier Hopping (CBH) model. Dielectric and modulus investigations indicate relaxation dynamics with the shorter relaxation time (6.45 × 10−6 s) from tangent loss spectra. From the SEM analysis, the uniform distribution and the porous nature of the electrode activated carbon are confirmed. A supercapacitor is assembled with TF10 displays electric double-layer capacitive features, delivering a specific capacitance of 7.1 Fg−1 at 15 mVs−1. Charge–discharge analysis reveals energy and power densities of 2.52 Wh kg−1 and 2500 W kg−1, respectively, for the supercapacitor.
Theoretical Insights into the Reactivity of M2CAA with OH Radicals and the Fate of Resulting Alkoxy Intermediates Nabam Tayum, Nand Kishor Gour, Arumugam Murugan, Bhupesh Kumar Mishra Chemistryselect, 2026 A comprehensive theoretical investigation was conducted to elucidate the mechanism, kinetics, and thermochemistry of the gas‐phase reactions between methyl 2‐chloroacetoacetate (CH 3 C(O)CHClC(O)OCH 3 , M2CAA) and hydroxyl (OH) radicals using the M06‐2X functional. The most thermodynamically stable conformer of M2CAA was identified at ambient temperature. Three primary hydrogen abstraction pathways were characterized, each proceeding through the formation of a prereactive complex, indicating that the reactions follow an indirect hydrogen abstraction mechanism. Rate coefficients for these pathways were calculated for the first time over a temperature range of 250–450 K using Canonical Transition State Theory (CTST). Based on these kinetic results, the atmospheric lifetime of M2CAA was estimated to be approximately 5.34 h. Furthermore, the atmospheric fate and primary degradation pathways of the resulting alkoxy radicals CH 3 COCHClCOOCH 2 O • and CH 3 C(O)C(O • )ClC(O)OCH 3 were also explored in detail for the first time.
Advanced Nanomaterials for Biofuel Production and Their Future Opportunities Ponnusamy Thillai Arasu, Suppandipillai Jeyakumar, Rajadurai Kalaivani, Gomathinayagam Kanthimathi, Raman Natarajan, Arumugam Murugan, Mithun Chakrabarty, Pooja Kadyan Emerging Materials for Biofuel Developments, 2025 Biofuels are rapidly emerging as viable and cost-effective alternatives to fossil fuels due to their environmentally friendly nature and affordability. There is ongoing investigation on the utilization of nanoparticles (NPs) to progress the efficiency of biofuel production. This chapter critically analyzes the existing research in the literature to improve the course yields of biofuel manufacture, including biogas, biohydrogen, biodiesel, and bioethanol. It also clarifies the several nanomaterials (nanofibers, metals, and nanotubes) employed in these bioprocesses. Furthermore, it assesses the impact of immobilized NPs on biofuels such as biodiesel and the effective mitigation of inhibitory substances by immobilized NPs in certain circumstances. Nevertheless, some scientific obstacles must be overcome to expedite their integration into bioprocesses. These strategies encompass the development of non-toxic NPs for microorganisms, the utilization of cost-effective NPs, and the adoption of ecologically sustainable NPs. This chapter provides knowledge of biofuel production using several types of nanomaterials and explores the potential advancement in researching these bioprocesses through the applications of NPs.
DNA Binding and Electrochemical Characterization of Oxidative Products of the Cobalt(II) Complex Ijaz Ullah Muzaddadi, Arumugam Murugan, Bondana Kalita, Shankhadeep Saha, Natarajan Raman, Selvaraj Freeda Selva Sheela, Arumugam Manohar, Muthaiah Shellaiah, Radak Blange, Wen-Tai Li Journal of Physical Chemistry B, 2025 The synthesis of meso -tetrakis(3,4,5-trimethoxyphenyl)porphyrin [H 2 T(3,4,5-OCH 3 )PP] and cobalt(II) meso -tetrakis(3,4,5-trimethoxyphenyl)porphyrin [Co(T(3,4,5-OCH 3 )PP)] has been successfully accomplished. The oxidation properties of [Co(T(3,4,5-OCH 3 )PP)] have been assessed through UV–vis, NMR, and EPR techniques. It can be seen in the UV–vis spectrum that adding SbCl 5 caused extra peaks to appear at 674 nm, which means that a π–cation radical was formed. The voltammogram shows how the ligand system helps the Co(II) electrochemical oxidation process to become Co(III). As shown by the EPR spectrum, the cobalt(II) changes its oxidation state to Co(III) due to the introduction of SbCl 5 . NMR data can also support this conclusion. The interaction of DNA with [Co(T(3,4,5-OCH 3 )PP)] has been evaluated. The decrease in current and the favorable alteration in the E 1/2 value highlight the substantial intercalative interaction between DNA and [Co(T(3,4,5-OCH 3 )PP)]. Hirshfeld surface analysis has been performed to recognize the many intermolecular interactions. In vitro cytotoxicity activity results suggest that the incorporation of a metal center enhances cytotoxic activity, as the metalloporphyrin derivative consistently showed greater potency than that of the corresponding free-base porphyrin. This enhancement may be attributed to the intrinsic π-conjugated structure of the porphyrin framework, which facilitates cellular uptake and interactions with biological targets.
Investigation into PVDF-HFP and PVP Polymer Blend Electrolytes with Lithium Ions for Energy Storage Application Bilash Jyoti Gogoi, M. Murugesan, N. Nallamuthu, P. Devendran, Arumugam Murugan, Radak Blange, Muthaiah Shellaiah Polymers, 2025 To improve solid-state lithium batteries, solution casting has been employed to create lithium ion-conducting copolymer electrolytes involving poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/polyvinylpyrrolidone (PVP) blend polymers with various compositions. Following X-ray diffraction and Fourier transformation (FTIR), the structural characterisation and identification of molecular bonding in polymer electrolytes were confirmed. Through AC impedance analysis, the electrical characteristics of the solid-state polymer films were investigated. The dielectric conductivity of the sample was found to obey the modified Arrhenius relationship, while in the case of a sample with higher conductivity, it followed Arrhenius behaviour. The relaxation parameters and dielectric behaviour of the samples are demonstrated and discussed.
Effective removal and remediation of heavy metals and emerging pollutants from industrial wastewater Ponnusamy Thillai Arasu, Arumugam Murugan, A. Mohamed Azharudeen, G. Kanthimathi, Natarajan Raman, S. Arun Prabhu, G. Elango Recent Trends in Industrial Wastewater Treatment, 2025 Water source pollution by heavy metals has become a serious worldwide environmental concern that endangers human health as well as aquatic ecosystems. Urbanization, climate change, and industrialization are all contributing factors to the rise of heavy metal contamination in the aquatic environment. Landfill leachates, industrial and municipal wastes, urban runoff, and natural phenomena including weathering, rock abrasion, and volcanic eruptions are some of the sources of pollution. Ions of heavy metals can bioaccumulate in biological systems and are hazardous and perhaps cancerous. Even at modest exposure levels, heavy metals can damage several organs, including the neurological system, liver, lungs, kidneys, stomach, skin, and reproductive systems. In recent years, there has been a greater effort to identify effective techniques for eliminating heavy metals from wastewater. While several methods are capable of efficiently eliminating heavy metal pollutants, their practical uses may be restricted due to their high preparation and usage costs. The primary causes of heavy metal pollution, as well as their chemical and biological transformations, toxicological effects on the environment, and detrimental consequences on the ecosystem, are the main topics of this chapter.
Luminescent Pyrene-Derivatives for Hg2+ and Explosive Detection Muthaiah Shellaiah, Kien-Wen Sun, K. Anandan, Arumugam Murugan, Vijayaraj Venkatachalam, Mayank Bhushan, Mani Sivakumar, E. Manikandan, Kumaravel Kaliaperumal, Wen-Tai Li Chemosensors, 2025
Heavy metals in water: challenges and remediation S. Senthilkumar, V. Siva, Arumugam Murugan, C.R. Ravikumar, Ponnusamy Thillai Arasu, Arumugam Manohar, Segni Asafa Ashana Role of Green Chemistry in Ecosystem Restoration to Achieve Environmental Sustainability, 2023
Photodynamic therapy with nanomaterials to combat microbial infections S. Pon Janani, P. Thillai Arasu, Ijaz U. Muzaddadi, Arumugam Murugan, C.R. Ravikumar, Nagendra N. Yadav, Hardeo S. Yadav Emerging Nanomaterials and Nano Based Drug Delivery Approaches to Combat Antimicrobial Resistance, 2022
Smart Applications of IoT Pradeep Kamboj, T. Ratha Jeyalakshmi, P. Thillai Arasu, S. Balamurali, A. Murugan Smart Cyber Ecosystem for Sustainable Development, 2021
Cancer Nanotechnology for Drug Targeting and Delivery Approaches Vadivel Siva, Chunchana Kuppe Renuka Prasad Ravikumar, Ponnusamy Thillai Arasu, Nagendra Nath Yadav, Arumugam Murugan, Hardeo Singh Yadav, Sultan Asath Bahadur, Saminathan Balamurali Nanotechnology in the Life Sciences, 2021
A study of physico-chemical analysis of ground water in and around SIPCOT, Tuticorin, Tamil Nadu, India International Journal of Earth Sciences and Engineering, 2016
Treatment of activated sludge lagoon inlet wastewater in pulp and paper industry International Journal of Chemtech Research, 2016
Reduce the pollutants from primary clarifier inlet wastewater of pulp and paper industry Journal of Chemical and Pharmaceutical Sciences, 2016
Chelated and free phosphine adducts of nickel(II)dithiocarbamates: Synthesis, spectroscopy and valence bond parameter calculations International Journal of Chemtech Research, 2014
Treatment of textile effluents by ion-exchange polymeric materials International Journal of Chemtech Research, 2014
Hydro geochemistry of groundwater resources International Journal of Chemtech Research, 2013
Physico chemical study on the sea water intrusion in tuticorin coastal area International Journal of Chemtech Research, 2013
Synthesis and electrochemical studies on oxidative products of vanadyl Meso-5,10,15,20-tetrakis(p-hydroxyphenyl)porphyrin International Journal of Chemtech Research, 2013
Application of correlation and regression analysis in assessing ground water quality International Journal of Chemtech Research, 2013