Mani Alagiri

Scopus Publications

Morphology-phase coupled engineering of NiCuCo layered double hydroxide towards efficient alkaline overall water splitting
Jayachandran Madhavan, Deepak Arumugam, Sugasri Chinnasamy, Pavithra Karthikesan, Harshini Sharan, Shankar Ramasamy, Puviyarasi Balakrishnan, Alagiri Mani
Fuel, 2026
Unravelling the interfacial charge dynamics and pseudocapacitive mechanism of BiCu-metal-organic framework intercalated NiS2 for high-performance symmetric supercapacitor
Sugasri Chinnasamy, Pavithra Karthikesan, Jayachandran Madhavan, Alagiri Mani
Journal of Energy Storage, 2026
Leveraging acoustic and mechanical wave phenomena to fabricate Cu(2-x)CoxP2O7 as electrocatalysts for energy storage and electrochemical water splitting application
Pavithra Karthikesan, Sugasri Chinnasamy, Harshini Sharan, Jayachandran Madhavan, Alagiri Mani
Applied Physics Letters, 2026
The development of renewable energy systems require the unification of efficient energy storage and hydrogen production facilities. Trifunctional electrocatalysts function as a single system which synchronously enables charge storage, hydrogen evolution reaction (HER), and oxygen evolution reaction (OER), providing a congruent platform. Systematic synthesis techniques promote the enhancement of catalytic activity, and long-term stability. In this context, low-frequency ultrasound (∼20 kHz) induces severe cavitation with the resultant physical forces generating radicals that primarily drive sonochemical processes. In this work, we employed a mechanical wave-assisted synthesis method to prepare Cu(2-x)CoxP2O7. The resulting electrocatalyst delivers an impressive specific capacitance of 681 F g−1, maintaining a cycling stability of 81% after enduring 30 000 cycles. The constructed symmetric supercapacitor attains an energy density of 17.4 Wh kg−1 and a power density of 699 W kg−1. Furthermore, CuCoP2O7 delivers strong bifunctional activity, necessitating merely 64 mV for HER and 288 mV for OER to reach a current density of 10 mA cm−2 while also facilitating overall water splitting by attaining 20 mA cm−2 at 1.60 V. Remarkably, the electrocatalyst achieves a Faradaic efficiency of 97.5%, demonstrating its outstanding effectiveness in facilitating oxygen and hydrogen evolution. These multifunctional electrocatalysts establish a pathway toward scalable, high-performance devices that integrate electrochemical energy storage with sustainable hydrogen production.
Cobalt manganese sulfide nanosheets: a robust bifunctional catalyst for alkaline water electrolysis
Harshini Sharan, Angappan Kausalya, Senthilkumar Lakshmipathi, Pavithra Karthikesan, Jayachandran Madhavan, Alagiri Mani
Sustainable Energy and Fuels, 2026
Cobalt manganese sulphide (COMS) electrocatalyst powering bifunctional water splitting.
Rational design of ternary-metal LDH nanoflowers anchored on reduced graphene oxide for bifunctional electrocatalysis in alkaline water splitting
Pavithra Karthikesan, Jayachandran Madhavan, Harshini Sharan, Sugasri Chinnasamy, Priyanga Devi Gothandaraman, Puviyarasi Balakrishnan, Alagiri Mani
Diamond and Related Materials, 2026
Positional Isomerism and Chlorine-Driven Crystal Packing Effects in Acridinium-Based Organic Ionic Pairs for TADF
Veerapandian Vallapandian, Rajaboopathi Mani, Ivo B. Rietveld, Aarifa Muhammed Ashraf, Alagiri Mani
ACS Applied Optical Materials, 2025
Three precisely engineered acridinium-based ionic pairs─acridinium 5-chlorosalicylate (Ac5ClSA), acridinium salicylate (AcSA), and acridinium 3-chlorosalicylate (Ac3ClSA) ─ contain each a well-defined donor-acceptor (D - -A + ) arrangement. This deliberate molecular design enables efficient thermally activated delayed fluorescence (TADF) for organic light-emitting diodes (OLEDs) applications. These acridinium-based ionic pairs exemplify how the positional isomerism of the chlorine substituent tunes solid-state fluorescence, by offering low Δ E ST, different molecular packings that control charge transfer characteristics, and enabling emission color tuning in the region red to green. Their suitability for TADF was theoretically predicted through density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations, which demonstrated decoupled HOMO–LUMO orbitals with Δ E ST < 0.026 eV. The lifetime measurements confirm the presence of delayed fluorescence, with distinct lifetimes for triplet and singlet excitons, confirming the TADF. All three ionic pairs exhibit exciplex-type excited states, driven by electrostatic interactions between the anionic salicylates and the cationic acridinium ion. FT-IR analysis confirmed the presence of an NH + bond at 2331 cm –1 for all three ionic pairs, confirming the proton transfer from salicylic to acridine. Ac5ClSA demonstrated the highest photoluminescence quantum yield (PLQY) of 13%. Furthermore, all the ionic pairs were doped with PMMA polymer with 10, 20, and 30% concentrations to optimize the emission property and to study electrostatic interactions. Cyclic voltammetry (CV) results aligned well with DFT-calculated HOMO values, demonstrating the intramolecular and intermolecular charge transfer (ICT) characteristics. The thermal stability of ionic pairs is high as expected, due to their ionic nature. This study establishes that the ionic pairs are promising candidates for next-generation TADF and deepens our understanding of structure–property relationships that guide the rational design for controlled emission characteristics.
Unveiling the Nickel–Manganese Sulfide Electrocatalyst for Enhanced Overall Alkaline Water Splitting
Harshini Sharan, Angappan Kausalya, Senthilkumar Lakshmipathi, Jayachandran Madhavan, Pavithra Karthikesan, Alagiri Mani
ACS Applied Energy Materials, 2025
Harnessing earth-abundant electrocatalysts for efficient water splitting is a key pursuit in the development of sustainable energy technologies. In this study, plate-like Nickel–manganese sulfide (NMS) was in situ grown on nickel foam, via a simple one-step hydrothermal approach, yielding a binder free electrocatalyst. The synergistic interplay between Ni and Mn in the sulfide matrix, combined with the conductive substrate, endows NMS with an exceptional bifunctional activity for overall water splitting in an alkaline medium. The NMS-based electrolyzer delivers a low cell voltage of 1.69 V at 10 mA/cm 2 and presents a remarkable stability over 150 h under 1 M KOH electrolyte. Notably, theoretical studies from density functional theory (DFT) strongly reinforce the experimental findings, highlighting NMS as a highly efficient bifunctional electrocatalyst. Thus, the viability of this system is positioned as a promising and scalable alternative to precious metal-based electrocatalysts.
A novel architectured BiCe metal organic framework-integrated MoS2 nanosheet: An intriguing strategy for deriving synergistic effects in high-performance symmetric supercapacitors
Sugasri Chinnasamy, Jayachandran Madhavan, Pavithra Karthikesan, Alagiri Mani
Journal of Power Sources, 2025
Electrochemical Enhancement of Copper in a Nickel-Iron Layered Double Hydroxide Catalyst for Alkaline Oxygen Evolution Reactions
Jayachandran Madhavan, Deepak Arumugam, Pavithra Karthikesan, Harshini Sharan, Shankar Ramasamy, Sajan Raj Sasirajan Littleflower, Alagiri Mani
Inorganic Chemistry, 2025
The development of an efficient and cost-effective oxygen evolution reaction (OER) catalyst is important in increasing the overall efficiency of the electrochemical water splitting process to produce green hydrogen. In this work, the substitution of copper in NiFe layered double hydroxide (LDH) was utilized to improve the sluggish kinetics of the water oxidation process. The simple in situ hydrothermal method was used to introduce copper into the NiFe LDH structure. All of the prepared catalysts displayed a sheet-like morphology, with the optimized NiCuFe LDH sample exhibiting a BET specific surface area of 117.5 m2 g–1. The optimized Cu-substituted LDH exhibited a superior performance in the alkaline water splitting process by requiring a lower overpotential of 230 mV to attain a current density of 10 mA cm–2, accompanied by a low Tafel constant of 47.7 mV dec–1, by outperforming the pristine NiFe LDH. The electronic structure modification of NiFe LDH by Cu atoms favors the OER process, which is verified by the density functional theory (DFT). Further, the optimized electrode was utilized in real-world conditions of the saline–alkaline electrolyte for water splitting, necessitating a minimal overpotential of 247.5 mV to oxidize water, and the electrode demonstrated long-term stability. Thus, NiCuFe LDH is a potential OER catalyst for large-scale electrochemical water splitting applications.
Harnessing sonochemistry in MnCoP2O7 as trifunctional electrodes for symmetric supercapacitor and electrochemical water splitting applications
Pavithra Karthikesan, Jayachandran Madhavan, Alagiri Mani
Nanoscale, 2025
The synthesized MnCoP 2 O 7 shows an excellent charge storage behaviour and enhanced water splitting catalytic activity in alkaline medium.
Sulfurization of ternary NiCoZn layered double hydroxides for enhanced and durable alkaline overall water splitting
Jayachandran Madhavan, Deepak Arumugam, Harshini Sharan, Pavithra Karthikesan, Shankar Ramasamy, Alagiri Mani
Surfaces and Interfaces, 2024
Unlocking the Electrocatalytic Behavior of Cu2MnS2 Nanoflake-Anchored rGO for the Oxygen Evolution Reaction in an Alkaline Medium
Harshini Sharan, Jayachandran Madhavan, Ganeshbabu Mariappan, Ramakrishnan Kalai Selvan, Alagiri Mani
Langmuir, 2024
Electrochemical stability and superior capacitance of bismuth cobalt metal-organic framework incorporated with vanadium disulfide nanosheet for supercapacitor application
Sugasri Chinnasamy, Alagiri Mani
Journal of Alloys and Compounds, 2024
Environmental impact and human health effects of polycyclic aromatic hydrocarbons and remedial strategies: A detailed review
Gopinath Venkatraman, Nelli Giribabu, Priyadarshini Sakthi Mohan, Barathan Muttiah, Venkat Kumar Govindarajan, Mani Alagiri, Puteri Shafinaz Abdul Rahman, Saiful Anuar Karsani
Chemosphere, 2024
Interfacial modulation of α-Ag1.82Cu0.09WO4 with high active BiOClxI1−x for boosting photocatalytic activity and degradation of emerging contaminants under direct sunlight
Chinnadurai Ayappan, Surya Selvaraj, Baskaran Palanivel, Alagiri Mani
Journal of Environmental Chemical Engineering, 2023
Interface engineering and photocatalytic properties of novel Bi4(V1.5Fe0.5O10.5)/g-C3N4 under direct sunlight irradiation
Venkatesan Jayaraman, Mathankumar Ganesan, Murugan Nagaraj, Alagiri Mani, Do-Heyoung Kim
Inorganica Chimica Acta, 2023
Thortveitite phase manganese vanadate (Mn2V2O7) for the removal of model organic pollutants
Venkatesan Jayaraman, Mathankumar Ganesan, Alagiri Mani, Do-Heyoung Kim
Korean Journal of Chemical Engineering, 2023
Facile construction of a fascinating dual Z-scheme Bi2S3/tg-C3N4/α-Ag2WO4 photocatalyst for effective removal of organic pollutants: Influence factors, mechanism insight and degradation pathway
Chinnadurai Ayappan, Alagiri Mani
Journal of Water Process Engineering, 2023
Smart Solutions for Hand Rub Dispenser
B. Puviyarasi, M. Alagiri, P. Gubhenthiran, P. Keerthana, S. Megala
2023 Intelligent Computing and Control for Engineering and Business Systems Iccebs 2023, 2023
Design and implementation of gain scheduling decentralized PI/PID controller for the fluid catalytic cracking unit
B. Puviyarasi, C. Murukesh, M. Alagiri
Biomedical Signal Processing and Control, 2022
Enhanced photocatalytic activities of facile auto-combustion synthesized ZnO nanoparticles for wastewater treatment: An impact of Ni doping
Mohd Shkir, Baskaran Palanivel, Aslam Khan, Mohanraj Kumar, Jih-Hsing Chang, Alagiri Mani, S. AlFaify
Chemosphere, 2022
Facile preparation of bismuth vanadate-sheet/carbon nitride rod-like interface photocatalyst for efficient degradation of model organic pollutant under direct sunlight irradiation
Venkatesan Jayaraman, Chinnadurai Ayappan, Alagiri Mani
Chemosphere, 2022
Tailoring the structural, optical and remarkably enhanced photocatalytic activities of nickel oxide nanostructures through cobalt doping
Mohd Shkir, Baskaran Palanivel, Aslam Khan, Nafis Ahmad, Alagiri Mani
Surfaces and Interfaces, 2021
Preparation and characterization of the Cu, Fe co-doped Bi2Ti2O7/EG-g-C3N4 material for organic model pollutants removal under direct sun light irradiation
Venkatesan Jayaraman, Chinnadurai Ayappan, Ganesh Vattikondala, Alagiri Mani
Materials Research Bulletin, 2021
Copper ions induced α-Ag2–2xCuxWO4 (0 ≤ x ≤ 0.12) solid solutions with favorable sunlight photocatalytic removal of toxic pollutants
Chinnadurai Ayappan, Baskaran Palanivel, Venkatesan Jayaraman, Alagiri Mani
Journal of Alloys and Compounds, 2021
Fluorine doped g-C3N4 coupled NiFe2O4 heterojunction: Consumption of H2O2 for production of hydroxyl radicals towards paracetamol degradation
Baskaran Palanivel, Chechia Hu, Mohd. Shkir, S. AlFaify, Fatma A. Ibrahim, Mohamed S. Hamdy, Alagiri Mani
Colloids and Interface Science Communications, 2021
Assembly of mixed Bi4V1.4Nb0.6O11 phase and g-C3N4 photoactive material over rGO: Enhanced organic model pollutants removal under sun light irradiation
Venkatesan Jayaraman, Murugan Chinnan, Pandikumar Alagarsamy, Alagiri Mani
Materials Science in Semiconductor Processing, 2021
Novel NiFe2O4 deposited S-doped g-C3N4 nanorod: Visible-light-driven heterojunction for photo-Fenton like tetracycline degradation
Baskaran Palanivel, Mohd. Shkir, T. Alshahrani, Alagiri Mani
Diamond and Related Materials, 2021
Construction of rGO Supported Integrative NiFe2O4/g-C3N4 Nanocomposite: Role of Charge Transfer for Boosting the OH. Radical Production to Enhance the Photo-Fenton Degradation
Baskaran Palanivel, Mani Alagiri
Chemistryselect, 2020
Conversion of a Type-II to a Z-Scheme Heterojunction by Intercalation of a 0D Electron Mediator between the Integrative NiFe2O4/g-C3N4Composite Nanoparticles: Boosting the Radical Production for Photo-Fenton Degradation
Baskaran Palanivel, Alagiri Mani
ACS Omega, 2020
Ag, Ni bimetallic supported g-C3N4 2D/Cd2Sb2O6.8 pyrochlore interface photocatalyst for efficient removal of organic pollutants
Venkatesan Jayaraman, Alagiri Mani
Journal of Materials Science Materials in Electronics, 2020
Facile preparation of novel Sb2S3 nanoparticles/rod-like α-Ag2WO4 heterojunction photocatalysts: Continuous modulation of band structure towards the efficient removal of organic contaminants
Chinnadurai Ayappan, Venkatesan Jayaraman, Baskaran Palanivel, Alagarsamy Pandikumar, Alagiri Mani
Separation and Purification Technology, 2020
Interfacial coupling effect of high surface area Pyrochlore like Ce2Zr2O7 over 2D g-C3N4 sheet photoactive material for efficient removal of organic pollutants
Venkatesan Jayaraman, Alagiri Mani
Separation and Purification Technology, 2020
Bridging and synergistic effect of the pyrochlore like Bi2Zr2O7 structure with robust CdCuS solid solution for durable photocatalytic removal of the organic pollutants
Venkatesan Jayaraman, Chinnadurai Ayappan, Baskaran Palanivel, Alagiri Mani
Rsc Advances, 2020
Rational design of ZnFe2O4/g-C3N4 nanocomposite for enhanced photo-Fenton reaction and supercapacitor performance
Baskaran Palanivel, Saranya devi Mudisoodum perumal, Thandavarayan Maiyalagan, Venkatesan Jayarman, Chinnadurai Ayyappan, Mani Alagiri
Applied Surface Science, 2019
Optical, photocatalytic properties of novel pyro- stannate A2Sn2O7 (A=Ce, Ca, Sr), and Pt deposited (SrCe)2Sn2O7 for the removal of organic pollutants under direct solar light irradiation
Venkatesan Jayaraman, Alagiri Mani
Materials Science in Semiconductor Processing, 2019
Magnetic binary metal oxide intercalated g-C3N4: Energy band tuned p-n heterojunction towards Z-scheme photo-Fenton phenol reduction and mixed dye degradation
Baskaran Palanivel, Venkatesan Jayaraman, Chinnadurai Ayyappan, Mani Alagiri
Journal of Water Process Engineering, 2019
One-step hydrothermal synthesis of CaWO4/α-Ag2WO4 heterojunction: An efficient photocatalyst for removal of organic contaminants
Chinnadurai Ayappan, Baskaran Palanivel, Venkatesan Jayaraman, Thandavarayan Maiyalagan, Alagiri Mani
Materials Science in Semiconductor Processing, 2019
CdZnS solid solution supported Ce2Sn2O7 pyrochlore photocatalyst that proves to be an efficient candidate towards the removal of organic pollutants
Venkatesan Jayaraman, Baskaran Palanivel, Chinnadurai Ayappan, Muthamizhchelvan Chellamuthu, Alagiri Mani
Separation and Purification Technology, 2019
Synergistic effect of band edge potentials on BiFeO3/V2O5 composite: Enhanced photo catalytic activity
Venkatesan Jayaraman, Debabrata Sarkar, Ranjith Rajendran, Baskaran Palanivel, Chinnadurai Ayappan, Muthamizhchelvan Chellamuthu, Alagiri Mani
Journal of Environmental Management, 2019
Inverse spinel NiFe2O4 deposited g-C3N4 nanosheet for enhanced visible light photocatalytic activity
Baskaran Palanivel, Chinnadurai Ayappan, Venkatesan Jayaraman, Siva Chidambaram, Rathinam Maheswaran, Alagiri Mani
Materials Science in Semiconductor Processing, 2019
Anti-Helicobacter pylori, cytotoxicity and catalytic activity of biosynthesized gold nanoparticles: Multifaceted application
V. Gopinath, S. Priyadarshini, D. MubarakAli, Mun Fai Loke, N. Thajuddin, Naiyf S. Alharbi, Tejabhiram Yadavalli, M. Alagiri, Jamuuna Vadivelu
Arabian Journal of Chemistry, 2019
Three-dimensional (3D) flower-like nanoarchitectures of ZnO-Au on MWCNTs for visible light photocatalytic applications
Siva Chidambaram, Arjunan Vijay, G. Mohan Kumar, Mani Alagiri, John Thiruvadigal, Maheswaran Rathinam
Applied Surface Science, 2018
Synthesis and Characterization of Spindle-Like TiO2 Nanostructures and Photocatalytic Activity on Methyl Orange and Methyl Blue Dyes Under Sunlight Radiation
S. Arunkumar, M. Alagiri
Journal of Cluster Science, 2017
Gold nanorod-based electrochemical sensing of small biomolecules: A review
Mani Alagiri, Perumal Rameshkumar, Alagarsamy Pandikumar
Microchimica Acta, 2017
In vitro toxicity, apoptosis and antimicrobial effects of phyto-mediated copper oxide nanoparticles
V. Gopinath, S. Priyadarshini, A. R. Al-Maleki, M. Alagiri, Rosiyah Yahya, S. Saravanan, Jamuna Vadivelu
Rsc Advances, 2016
Sol–gel synthesis of α-Fe2O3 nanoparticles and its photocatalytic application
M. Alagiri, Sharifah Bee Abdul Hamid
Journal of Sol Gel Science and Technology, 2015
Graphene-Polypyrrole Nanocomposite: An Ideal Electroactive Material for High Performance Supercapacitors
Alagiri Mani, Khosro Zangeneh Kamali, Alagarsamy Pandikumar, Yee Seng Lim, Hong Ngee Lim, Nay Ming Huang
Graphene Materials Fundamentals and Emerging Applications, 2015
Synthesis of iron nanowires and its magnetic properties
International Journal of Chemtech Research, 2015
Synthesis, characterization and photocatalytic application of α-Fe2O3 microflower
M. Alagiri, Sharifah Bee Abdul Hamid
Materials Letters, 2014
Green synthesis of α-Fe2O3 nanoparticles for photocatalytic application
M. Alagiri, Sharifah Bee Abdul Hamid
Journal of Materials Science Materials in Electronics, 2014
Synthesis of superparamagnetic cobalt nanoparticles through solvothermal process
M. Alagiri, C. Muthamizhchelvan, Sharifah Bee Abdul Hamid
Journal of Materials Science Materials in Electronics, 2013
Solvothermal preparation of cobalt nanorods
M. Alagiri, C. Muthamizhchelvan
Journal of Materials Science Materials in Electronics, 2013
Solvothermal preparation of iron nanosheets
M. Alagiri, C. Muthamizhchelvan
Journal of Materials Science Materials in Electronics, 2013
Synthesis and characterization of dumbbell-like nickel nanostructures
Asian Journal of Chemistry, 2013
Synthesis and characterization of NiO nanoparticles by sol-gel method
M. Alagiri, S. Ponnusamy, C. Muthamizhchelvan
Journal of Materials Science Materials in Electronics, 2012
Solvothermal synthesis of nickel nanorods and its magnetic, structural and surface morphological behavior
M. Alagiri, C. Muthamizhchelvan, S. Ponnusamy
Materials Letters, 2011
Observation of magnetic, structural and surface morphological studies of triangle-like nickel nanoplates
M. Alagiri, K. Ashok, C. Muthamizhchelvan, S. Ponnusamy
Materials Letters, 2011
Structural and magnetic properties of iron, cobalt and nickel nanoparticles
M. Alagiri, C. Muthamizhchelvan, S. Ponnusamy
Synthetic Metals, 2011

Mani Alagiri

RESEARCH INTERESTS

FUTURE PROJECTS

Scopus Publications

Mani Alagiri

RESEARCH INTERESTS

FUTURE PROJECTS

Nanomaterials for supercapacitor

Scopus Publications