Nanoscience and Nanotechnology
M. Tech (MS)-2010
Nanoscience and Nanotechnology
Anna University, Chennai, India.
BSc, MSc in Physics-2008
Bharathiyar University, CBE, India.
Awards & honors:
- CONACyT fellowship, Mexico (2010-2014).
- DGAPA Post-doctoral fellowship (2015-2017)
- System of national research council (SNI)- Level I in Level III.
- Cathedra of CONACYT position in CONACYT, Mexico.
- Carl Storm International Diversity (CSID) fellowship at GRC, USA.
- Secured school 3rd in 10th board exam.
- Reviewer of peer review journals (Chemistry of Materials, ACS sustainable chemistry and Engineering, ACS Applied Energy materials, ACS Omega).
- Organizing committee member in international conferences at IFUAP, BUAP, Mexico.
- Teaching courses for post graduate and graduate students at BUAP, Mexico.
We are highly interdisciplinary looking for motivated individuals for Undergraduate, Graduate, and Post-Doc positions. Interested candidates can send inquiries to firstname.lastname@example.org
Generally, my research interests are focused on development of new catalysts based on bi/multi-metallic nanocrystals and metal nanoparticles supported metal oxides for catalysis and energy storge applications. This involves the development of new synthetic routes such as seed-mediated chemical growth of bi/multimetallic core-shell nanocrystals, and green synthesis of NPs supported mesoporous metal oxide nanostructures using deep eutectic solvents (DESs) and their structure, morphological, and interface properties using advanced characterization techniques. We are also study synthesis of perovskite nanocrystals and their optoelectronic properties for solar cells applications as well as highly flexible and low-cost SERS substrates for detection of biomolecules such as virus and disease related biomarkers.
Bimetallic/multi metallic nanocrystals (NCs) have recently emerged as a unique class of catalytic materials, which enabled substantially reduce the Pt-utilization, and remarkably high catalytic efficiencies. Our group focuses on development of novel synthetic routes for size, and shape controlled synthesis of bi/multi metallic core-shell NCs ( e.g. Pd@Au, Pd@Pt, Pd@AuCu, Pd@AuNi, and Ag@PtNi core-shell nanocubes , octahedra NCs) with controlled shell thickness. We are trying to understand the effect of surface strain, atomic defects through HAADF-STEM imaging techniques and their influence towards catalytic properties.
Metal NPs supported metal oxides (nanocomposite) have attracted as a potential inexpensive electrocatalysts with increased efficiency and durability. Our work focuses on synthesis of monodisperse metal NPs (Pt, Pd, Au and bimetallic AuNi, and PdSn) are uniformly supported onto metal oxide support (SiO2,TiO2, CeO2) as a model catalysts, and understanding how selectively and catalytic efficiency tuning by tailoring the NPs size, interface between metal/metal oxides for alcohol oxidations, oxygen reduction reactions (ORR), and CO2 reductions. We also study supporting single atoms (Au and Pd) onto metal oxide support as an advanced electrocatalysts.
Energy storage and conversion
Controlled synthesis of bimetallic/multimetallic nanocrystals
Controlled self-assembly of bimetallic NPs films
Controlled self-assembly of opal based 3D cystals
Graphene-Based Field-Effect Transistors in Biosensing and Neural interfacing Applications: Recent Advances and prospects. Anal. Chem
Siva Kumar Krishnan, Nandhini Nataraj, M. Meyyappan, and Umapada Pal. Anal Chem
Molybdenum-Doped Nickel Disulfide (NiS2:Mo) Microspheres as an Active Anode Material for High-Performance Durable Lithium-Ion Batteries
U. Pal; P. S. Murphin Kumar; V. Ponnusamy; H-il Kim; M. A. Hernández and S.Kumar Krishnan. ACS Appl. Energy Mater. Pp.11-12, 2022.
An Efficient and Durable Electrocatalyst based on Strongly Coupled Pt Nanoparticles on CeO2 Microspheres for CO- resilient Methanol Oxidation
Paskalis Sahaya Murphin Kumar, Arulmani Subramanian ׀׀Hyoung-il Kim, Deepthi Koolath Ramakrishnan, Vinothkumar Ponnusamy, Umapada Pal, Siva Kumar Krishnan J. Phys. Chem. C
Strontium Vanadate-Supported Graphitic Carbon Nitride Nanocomposite for Simultaneous Voltametric Determination of Acetaminophen and Levofloxacin in Complex Biological Samples
Nandini Nataraj, Shen-Ming Chen, Siva Kumar Krishnan Environ. Sci.: Nano, 2022