Publications by authors named "Hariprasad Ranganathan"

The rational design of high-performance non-noble metal electrocatalysts at large current densities is important for the development of sustainable energy conversion devices such as alkaline water electrolyzers. However, improving the intrinsic activity of those non-noble metal electrocatalysts remains a great challenge. Therefore, NiP/MoO decorated three-dimensional (3D) NiFeP nanosheets (NiFeP@NiP/MoO) with abundant interfaces were synthesized using facile hydrothermal and phosphorization methods.

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Recent advancements in drug delivery technologies paved a way for improving cancer therapeutics. Nanotechnology emerged as a potential tool in the field of drug delivery, overcoming the challenges of conventional drug delivery systems. In the field of nanotechnology, solid lipid nanoparticles (SLNs) play a vital role with a wide range of diverse applications, namely drug delivery, clinical medicine, and cancer therapeutics.

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Three kinds of Pt anchoring on heteroatom-doped graphene were synthesised and their effects on catalytic performance were discussed. The introduction of N and P into graphene is helpful to decrease the Pt particle size with a homogeneous distribution and favor the electronic configuration for the ORR.

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Three-dimensional (3D) core-shell heterostructured NiS@MnOH nanorods grown on nickel foam (NiS@MnOH/NF) were successfully fabricated via a simple hydrothermal reaction and a subsequent electrodeposition process. The fabricated NiS@MnOH/NF shows outstanding bifunctional activity and stability for hydrogen evolution reaction and oxygen evolution reaction, as well as overall-water-splitting performance. The main origins are the interface engineering of NiS@MnOH, the shell-protection characteristic of MnOH, and the 3D open nanorod structure, which remarkably endow the electrocatalyst with high activity and stability.

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Developing cheap and earth-abundant electrocatalysts with high activity and stability for oxygen reduction reactions (ORRs) is highly desired for the commercial implementation of fuel cells and metal-air batteries. Tremendous efforts have been made on doped-graphene catalysts. However, the progress of phosphorus-doped graphene (P-graphene) for ORRs has rarely been summarized until now.

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Article Synopsis
  • - The study developed and validated a UV spectrophotometric method to effectively measure the dissolution of tetrahydrocurcumin (THC), a class II drug that requires careful solubility and stability assessments.
  • - Researchers tested the drug's solubility across various pH levels (1.2 to 7.4) and surfactant concentrations, finding that a medium with 1% sodium lauryl sulfate (SLS) at pH 7.4 significantly increased solubility and enhanced testing conditions.
  • - The new method proved effective for quality control of THC, demonstrating specificity, linearity, accuracy, and precision, meeting international validation guidelines, and filling a gap in existing pharmacopoe
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The electrochemical oxygen evolution reaction (OER) is an important half-cell reaction in many renewable energy conversion and storage technologies, including electrolyzers, nitrogen fixation, CO reduction, metal-air batteries, and regenerative fuel cells. Among them, proton exchange membrane (PEM)-based devices exhibit a series of advantages, such as excellent proton conductivity, high durability, and good mechanical strength, and have attracted global interest as a green energy device for transport and stationary sectors. Nevertheless, with a view to rapid commercialization, it is urgent to develop highly active and acid-stable OER catalysts for PEM-based devices.

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Article Synopsis
  • The study focuses on creating chitosan nanoparticles (CS-NPs) loaded with gemcitabine and capped with folic acid and silver nanoparticles, aimed at improving cancer treatment through targeted drug delivery.
  • Characterization techniques such as dynamic light scattering and transmission electron microscopy confirmed the size and properties of the nanoparticles, which were influenced by their compositions and conditions.
  • In vitro testing showed that the CS-NPs effectively released the drug in lower pH environments and had higher cytotoxicity on human breast cancer cells compared to neutral pH levels, indicating potential for site-specific cancer therapy.
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