Sundarapandi Manickam

@scholar.google.com

Postdoc, Ariel University, Israel
Postdoc/Ariel University

Sundarapandi Manickam


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https://researchid.co/sundarapandi93

EDUCATION

M.Sc., Ph.D., Postdoc (South Korea, Israel)

RESEARCH, TEACHING, or OTHER INTERESTS

Chemistry, Catalysis, Electrochemistry, Sensory Systems
9

Scopus Publications

93

Scholar Citations

5

Scholar h-index

3

Scholar i10-index

Scopus Publications

  • Tailoring the shell structures in core-shell metal nanostructures for improved catalytic reduction of nitroaromatics
    Manickam Sundarapandi, Alagarsamy Pandikumar, Perumal Rameshkumar, Ramasamy Ramaraj
    Nano Trends, 2025
    • Nano trends focuses on both the fundamental science and practical applications of catalysis. This review article comprehensively examines the synthesis and catalytic properties of core-shell nanoparticles, which fits squarely within the journal's scope. • The article provides an in-depth review of various metal shell layers (monolayer, bilayer, and alloy shells) on different cores, highlighting their significance in catalysis. • The review addresses a critical environmental issue—the catalytic reduction of toxic nitroaromatics. By exploring the enhanced catalytic activities of core-shell nanoparticles for this purpose, the article tackles an important challenge in environmental catalysis, making it highly relevant for publication in the journal. • The article not only reviews the current state of research but also critically analyzes the impact of tailoring shell structures on catalytic efficiency. By identifying gaps in current knowledge and suggesting future research directions, the article encourages further exploration and innovation in the field of catalysis. Core-shell metal nanostructures have garnered significant attention from researchers worldwide in recent years due to their size- and shape-dependent properties, which arise from the synergistic effects between the core and shell. These properties are particularly valuable for applications in catalysis. This review focuses on recent advancements in the synthesis of various metal shell layers on cores of different sizes and shapes for the catalytic reduction of nitroaromatics. Initially, recent contributions to the synthesis of diverse bimetallic nanostructures, including hollow, crown-jewel, alloy, and core-shell architectures are summarized. Subsequently, the influence of tailoring metal shells, including monolayer, bilayer, and alloy layer metal shells on core metals, on the catalytic activity of nitroaromatics is discussed. This review highlights significant progress in the design and synthesis of various nanostructures and compositions through precise control of nucleation and growth processes using specific synthetic methods. Moreover, the discussion focused on how the catalytic reduction of nitroaromatics is influenced by the synergistic effect when different layers of metal shells are applied to the core. Furthermore, the advantages and limitations associated with the synthesis of core-shell nanostructures are highlighted in each section. Finally, perspectives on future research directions for core-shell metal nanostructures are provided. Since this is a review article, no graphical abstract was used.
  • Colloidal Nanoparticles as Potential Optical Biosensors for Cancer Biomarkers
    Karthika Lakshmi Servarayan, Maziah Mohd Ghazaly, Manickam Sundarapandi, Jagathiswary Ganasan, Kavin Tamilselvan, Syahidatun Nisak Amir, Nur Arisya Farazuana Dzulkifli, Noor Fatin Shabira Mohd Azli, Rameshkumar Santhanam, Vasantha Vairathevar Sivasamy
    Soft Materials Based Biosensing Medical Applications, 2025
    The chapter provides an overview of the forms and applications of colloidal nanoparticle–based soft materials as optical biosensors for the detection of cancer biomarkers. It reviews different types of colloidal nanoparticles and their applications, types of cancer biomarkers, colloidal nanoparticle– based optical biosensors for the detection of cancer biomarkers, and a discussion on the merits and demerits of the optical biosensors, and, finally, it ends with future perspectives of colloidal nanoparticles as detection templates for the sensing of cancer biomarkers.
  • Aminosilane assisted deposition of gold nanoparticles on Zn(OH)2 nanosheets and their application in electrochemical sensor
    Manickam Sundarapandi, Jung Su Park, Joon Heon Kim
    Colloids and Surfaces A Physicochemical and Engineering Aspects, 2024
  • Simple enzyme based fluorimetric biosensor for urea in human biofluids
    Karthika Lakshmi Servarayan, Ellairaja Sundaram, Kumaravel Velayutham, Manikka Kubendran Aravind, Manickam Sundarapandi, Balasubramaniem Ashokkumar, Vasantha Vairathevar Sivasamy
    Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, 2024
  • Synthesis of Different Nano-layer Shells (Mono-, Bi-, and Alloy Layers)-Coated Gold Spherical Nanoparticles Core for Catalysis
    Manickam Sundarapandi, Sivakumar Shanmugam, Ramasamy Ramaraj
    Chemistryselect, 2023
    Various types of metal layer shells such as mono‐, bi‐, and alloy layer using gold and silver on preformed gold spherical nanoparticles core were synthesizing using sodium borohydride as reducing agent. UV‐vis absorption spectroscopy, transmission electron microscopy images, and X‐ray diffraction techniques were used to characterize the prepared pristine gold spherical nanoparticles and various core‐shell metal nanoparticles. High‐angle annular dark field scanning transmission electron microscopy‐energy dispersive X‐ray spectroscopy mapping images were recorded for the alloy and bilayer shell coated core‐shell nanoparticles. Catalytic reduction of 4‐nitroaniline in the presence of sodium borohydride was taken to study the catalytic activity of the prepared core‐shell nanostructures. Interestingly, the alloy shell coated gold spherical nanoparticles (AuNP@AgAu) showed the best catalytic activity (higher rate constant; 21.61×10 −3 s −1 ) than that of mono‐, and bilayer core‐shell and pristine gold spherical nanoparticles.
  • Amine-Functionalized Silane-Assisted Preparation of AgNP-Deposited α-Ni(OH)2Composite Materials and Their Application in Hg2+Ion Sensing
    Manickam Sundarapandi, Raju Praveen, Sivakumar Shanmugam, Ramasamy Ramaraj
    ACS Omega, 2022
    composite material showed selective sensing behavior.
  • Tuning Cu2O Shell on Gold Nanocube Core Employing Amine-Functionalized Silane for Electrocatalytic Nitrite Detection
    Manickam Sundarapandi, Sivakumar Shanmugam, Ramasamy Ramaraj
    ACS Applied Nano Materials, 2022
    A facile synthetic method for depositing copper(I) oxide (Cu2O) shell on Au nanocube (AuNC) core with different core–shell ratios (1:1, 1:5, 1:10, and 1:20) is reported. An innovative approach of tuning the Cu2O nanoshell for utilizing the catalytic activity of the AuNC@Cu2O core–shell nanostructures is investigated. N-[3-(trimethoxysilyl)propyl]diethylenetriamine (TPDT) silane played a dual role in the formation and stabilization of the Cu2O shell on the AuNC core. The optimal concentration of TPDT silane required for forming a stable Cu2O shell is studied systematically and deployed for fabricating AuNC@Cu2O core–shell nanostructures with various core-to-shell ratios. UV–vis absorption spectroscopy, high-resolution electron transmission microscopy analyses, scanning electron microscopy coupled with line scan energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and inductively coupled plasma mass spectrometry techniques were used to characterize the prepared AuNC@Cu2O core–shell nanostructures. High-angle annular dark-field scanning transmission electron microscopy–energy-dispersive X-ray spectroscopy mapping images–line scan image and scanning electron microscopy coupled with line scan energy-dispersive X-ray spectroscopy were recorded to understand the core–shell nature of AuNC@Cu2O nanostructures. The electrocatalytic activity of AuNC@Cu2O core–shell nanostructures with different Cu2O shell thicknesses toward nitrite detection was investigated using the cyclic voltammetry technique. The TPDT-stabilized AuNC@Cu2O nanostructure with the core–shell ratio of 1:10 showed the best electrocatalytic activity, and the estimated detection limit of nitrite concentration was found to be as low as 14.7 nM.
  • Synthesis and Catalytic Activities of Metal Shells (Monolayer, Bilayer, and Alloy Layer)-Coated Gold Octahedra toward Catalytic Reduction of Nitroaromatics
    Manickam Sundarapandi, Sivakumar Shanmugam, Ramasamy Ramaraj
    Journal of Physical Chemistry C, 2019
    Different types of metal shells such as monolayer, bilayer, and alloy layer of gold (Au) and/or silver (Ag) on gold octahedra (AuOh) nanoparticles were synthesized using N-[3-(trimethoxysilyl)propyl]diethylenetriamine (TPDT) without employing any external reducing agents. TPDT, an alternative to sodium borohydride, was used to prepare 15 different core–shell metal nanostructures. The direct colloidal synthesis and stabilization of silver octahedra nanoparticles is still a challenging task. The proposed methodology is an alternative synthetic route for Ag or Au nanoshell coated onto the AuOh core. UV–vis absorption spectroscopy, high-resolution electron transmission microscopy analyses with selected area electron diffraction, energy-dispersive X-ray spectroscopy, inductively coupled plasma mass spectrometry, and X-ray diffraction techniques were used to characterize the prepared core–shell octahedra nanostructures. High-angle annular dark field scanning transmission electron microscopy–energy-dispersive X-ray spectroscopy (EDS) mapping images and scanning electron microscopy coupled with lines scan EDS were recorded to understand the alloy layer shell and bilayer shell in the core–shell Oh nanostructures. Catalytic reduction of toxic nitroaromatic compounds was chosen to investigate the catalytic activity of the core–shell octahedra nanostructures. The results reveal that the bimetal (AgAu) alloy shell layer coated over AuOh showed best catalytic activity, among the core–shell catalysts investigated for the reduction of nitroaromatics.
  • Catalytic Activities of Mono- and Bimetallic (Gold/Silver) Nanoshell-Coated Gold Nanocubes toward Catalytic Reduction of Nitroaromatics
    Manickam Sundarapandi, Perumal Viswanathan, Shanmugam Sivakumar, Ramasamy Ramaraj
    Langmuir, 2018
    A new class of core–shell metallic nanostructures with tunable near-surface composition and surface morphology with excellent catalytic activity is reported. Very thin shells of metal nanoassemblies such as monolayer (Ag and Au), bilayer of Ag or Au, and AgAu alloy layer with controlled size and morphology were deposited onto a gold nanocube (AuNC) core. UV–vis absorption spectroscopy and high-resolution transmission electron microscopy analyses along with selected-area electron diffraction, energy dispersive X-ray spectroscopy, inductively coupled plasma mass spectrometer, and X-ray diffraction techniques were used to characterize the prepared core–shell nanocubes. High-angle annular dark field scanning transmission electron microscopy–energy dispersive X-ray spectroscopy mapping images were recorded for the bilayer shell and alloy layer shell in the core–shell nanostructures. Reduction of 4-nitroaniline in the presence of sodium borohydride was chosen to validate the catalytic activity of the prepared core–shell metal nanocubes. Interestingly, the AgAu alloy shell layer over the AuNC (AuNC1@Ag0.25Au0.25) showed excellent catalytic activity compared with the pristine AuNC and monolayer and bilayer core–shell nanostructures.

RECENT SCHOLAR PUBLICATIONS

  • Colloidal Nanoparticles as Potential Optical Biosensors for Cancer Biomarkers
    KL Servarayan, MM Ghazaly, M Sundarapandi, J Ganasan, K Tamilselvan, ...
    Soft Materials‐Based Biosensing Medical Applications, 145-163 , 2025
    2025
    Citations: 3
  • Tailoring the shell structures in core-shell metal nanostructures for improved catalytic reduction of nitroaromatics
    M Sundarapandi, A Pandikumar, P Rameshkumar, R Ramaraj
    Nano Trends 9, 100083 , 2025
    2025
    Citations: 4
  • Aminosilane assisted deposition of gold nanoparticles on Zn (OH) 2 nanosheets and their application in electrochemical sensor
    M Sundarapandi, JS Park, JH Kim
    Colloids and Surfaces A: Physicochemical and Engineering Aspects 695, 134252 , 2024
    2024
  • Simple enzyme based fluorimetric biosensor for urea in human biofluids
    KL Servarayan, E Sundaram, K Velayutham, MK Aravind, ...
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 315, 124271 , 2024
    2024
    Citations: 6
  • Synthesis of Different Nano‐layer Shells (Mono‐, Bi‐, and Alloy Layers)‐Coated Gold Spherical Nanoparticles Core for Catalysis
    M Sundarapandi, S Shanmugam, R Ramaraj
    ChemistrySelect 8 (11), e202203389 , 2023
    2023
    Citations: 2
  • Amine-Functionalized Silane-Assisted Preparation of AgNP-Deposited α-Ni(OH) 2 Composite Materials and Their Application in Hg 2+ Ion Sensing
    M Sundarapandi, R Praveen, S Shanmugam, R Ramaraj
    ACS omega 7 (43), 39396-39403 , 2022
    2022
    Citations: 5
  • Tuning Cu 2 O Shell on Gold Nanocube Core Employing Amine-Functionalized Silane for Electrocatalytic Nitrite Detection
    M Sundarapandi, S Shanmugam, R Ramaraj
    ACS Applied Nano Materials 5 (1), 1674-1682 , 2022
    2022
    Citations: 23
  • Preparation and Applications of Metal Nanoparticles: Effect of Size and Shape on Catalysis and Sensors (Thesis)
    M Sundarapandi
    Madurai Kamaraj University, Madurai , 2022
    2022
  • Synthesis and catalytic activities of metal shells (monolayer, bilayer, and alloy layer)-coated gold octahedra toward catalytic reduction of nitroaromatics
    M Sundarapandi, S Shanmugam, R Ramaraj
    The Journal of Physical Chemistry C 123 (34), 21066-21075 , 2019
    2019
    Citations: 15
  • Catalytic activities of mono-and bimetallic (Gold/Silver) nanoshell-coated gold nanocubes toward catalytic reduction of nitroaromatics
    M Sundarapandi, P Viswanathan, S Sivakumar, R Ramaraj
    Langmuir 34 (46), 13897-13904 , 2018
    2018
    Citations: 35

MOST CITED SCHOLAR PUBLICATIONS

  • Catalytic activities of mono-and bimetallic (Gold/Silver) nanoshell-coated gold nanocubes toward catalytic reduction of nitroaromatics
    M Sundarapandi, P Viswanathan, S Sivakumar, R Ramaraj
    Langmuir 34 (46), 13897-13904 , 2018
    2018
    Citations: 35
  • Tuning Cu 2 O Shell on Gold Nanocube Core Employing Amine-Functionalized Silane for Electrocatalytic Nitrite Detection
    M Sundarapandi, S Shanmugam, R Ramaraj
    ACS Applied Nano Materials 5 (1), 1674-1682 , 2022
    2022
    Citations: 23
  • Synthesis and catalytic activities of metal shells (monolayer, bilayer, and alloy layer)-coated gold octahedra toward catalytic reduction of nitroaromatics
    M Sundarapandi, S Shanmugam, R Ramaraj
    The Journal of Physical Chemistry C 123 (34), 21066-21075 , 2019
    2019
    Citations: 15
  • Simple enzyme based fluorimetric biosensor for urea in human biofluids
    KL Servarayan, E Sundaram, K Velayutham, MK Aravind, ...
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 315, 124271 , 2024
    2024
    Citations: 6
  • Amine-Functionalized Silane-Assisted Preparation of AgNP-Deposited α-Ni(OH) 2 Composite Materials and Their Application in Hg 2+ Ion Sensing
    M Sundarapandi, R Praveen, S Shanmugam, R Ramaraj
    ACS omega 7 (43), 39396-39403 , 2022
    2022
    Citations: 5
  • Tailoring the shell structures in core-shell metal nanostructures for improved catalytic reduction of nitroaromatics
    M Sundarapandi, A Pandikumar, P Rameshkumar, R Ramaraj
    Nano Trends 9, 100083 , 2025
    2025
    Citations: 4
  • Colloidal Nanoparticles as Potential Optical Biosensors for Cancer Biomarkers
    KL Servarayan, MM Ghazaly, M Sundarapandi, J Ganasan, K Tamilselvan, ...
    Soft Materials‐Based Biosensing Medical Applications, 145-163 , 2025
    2025
    Citations: 3
  • Synthesis of Different Nano‐layer Shells (Mono‐, Bi‐, and Alloy Layers)‐Coated Gold Spherical Nanoparticles Core for Catalysis
    M Sundarapandi, S Shanmugam, R Ramaraj
    ChemistrySelect 8 (11), e202203389 , 2023
    2023
    Citations: 2
  • Aminosilane assisted deposition of gold nanoparticles on Zn (OH) 2 nanosheets and their application in electrochemical sensor
    M Sundarapandi, JS Park, JH Kim
    Colloids and Surfaces A: Physicochemical and Engineering Aspects 695, 134252 , 2024
    2024
  • Preparation and Applications of Metal Nanoparticles: Effect of Size and Shape on Catalysis and Sensors (Thesis)
    M Sundarapandi
    Madurai Kamaraj University, Madurai , 2022
    2022