Silvia Chowdhury

ORCID: 0000-0003-0146-9727
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Research Areas
  • Insect Utilization and Effects
  • Metal-Organic Frameworks: Synthesis and Applications
  • Supercapacitor Materials and Fabrication
  • Nanoparticles: synthesis and applications
  • Gas Sensing Nanomaterials and Sensors
  • Insect and Arachnid Ecology and Behavior
  • Conducting polymers and applications
  • Graphene and Nanomaterials Applications
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Antimicrobial Peptides and Activities
  • Water Quality Monitoring and Analysis
  • Nanotechnology research and applications
  • Advancements in Battery Materials
  • Protein Hydrolysis and Bioactive Peptides
  • Analytical Chemistry and Sensors
  • Nanomaterials for catalytic reactions
  • ZnO doping and properties
  • Advanced battery technologies research
  • Electrochemical Analysis and Applications
  • Optimal Experimental Design Methods
  • Electrochemical sensors and biosensors
  • Advanced biosensing and bioanalysis techniques
  • Beetle Biology and Toxicology Studies
  • Dendrimers and Hyperbranched Polymers
  • Laser-Ablation Synthesis of Nanoparticles

The University of Queensland
2021-2025

International Islamic University Malaysia
2015-2018

In this work, we report the preparation of one-dimensional (1D) bimetallic zinc-cobalt BTC (BTC = 1,3,5-benzenetricarboxylate) metal–organic frameworks (MOFs) with varying Zn/Co ratios and their conversion to hierarchical porous Co/C hybrids a trace amount Zn (<0.05 wt%). The crystallinity, surface area, degree graphitization resulting hybrid are governed by ratio parent Zn-Co MOF. product derived from Zn-rich MOF (ZC31-BTC precursor 3:1) shows higher area more amorphous structure than that...

10.1016/j.cej.2024.152124 article EN cc-by Chemical Engineering Journal 2024-05-10

A series of hierarchical three-dimensional (3D) manganese-cobalt benzenetricarboxylic acid (Mn-Co BTC) metal–organic frameworks (MOFs) with controllable sub-units and interior architectures have been synthesized at room temperature without templates, etchants, or high-pressure conditions. The assembling the 3D Mn-Co BTC MOFs can be controlled by tuning Mn/Co ratio, higher Mn content favoring one-dimensional (1D) sub-units, while Co favors two-dimensional (2D) sub-units. hollow spheres...

10.1016/j.cej.2023.147990 article EN cc-by-nc-nd Chemical Engineering Journal 2023-12-13

In recent decades, nanoparticles research has garnered a lot of interest, especially in finding more effective ways for their synthesis. This study aims to investigate the chemical mediated synthesis silver (AgNPs) using salt and tri-sodium citrate as reducing agent. Processing parameters were statistically optimized order produce high yield AgNPs optimization analyzed Response Surface Methodology (RSM). Based on production, UV-vis spectrophotometer range 350 420 nm, results show that out...

10.1016/j.proeng.2016.06.552 article EN Procedia Engineering 2016-01-01

This work reports the use of M-BDC (M = Cu, Mn, Ni, and Zr) MOFs for glucose sensing by surface plasmon resonance (SPR) methods. The sensitivity is in order Zr-BDC &gt; Cu-BDC Mn-BDC Ni-BDC bare Au chip.

10.1039/d3tb00138e article EN Journal of Materials Chemistry B 2023-01-01

This work reports the selective synthesis of monodisperse nickel–cobalt phosphate particles with different structures for battery-like supercapacitors.

10.1039/d3ta06584g article EN Journal of Materials Chemistry A 2024-01-01

Bimetallic metal–organic frameworks (MOFs) offer unique synergistic properties and improved conductivity due to the integration of multiple metal components. However, their electrical dielectric remain underexplored, charge transport mechanisms are not fully understood. This study investigates Mn‐BTC (BTC = benzene‐1,3,5‐tricarboxylic acid), Co‐BTC, bimetallic Mn–Co BTC MOFs with varying Mn/Co ratios. Charge in these occurs via hopping at low frequencies, transitioning lattice response...

10.1002/aesr.202300301 article EN cc-by Advanced Energy and Sustainability Research 2025-02-14

Enlargement of micropores in zeolitic imidazolate framework particles into mesopores is achieved via an ethylene glycol-assisted aqueous etching method. The etched carbon shows a higher specific capacitance than unetched one at high scan rates.

10.1039/d2ta06307g article EN Journal of Materials Chemistry A 2022-11-02

Metallic silver (Ag) and some Ag compounds have long being used to fight microbial infection even before the emergence of antibiotics in form drugs. But lately, one problems facing medical world is occurrence drug resistance microbes. Therefore, actions must be taken overcome problem, which continue studies develop new drugs, either synthetic or natural. The ultimate goal offer appropriate efficient antimicrobial drugs patients. In this regard, with advent nanotechnology, it now possible...

10.11113/jt.v80.11465 article EN Jurnal Teknologi 2018-02-26

The photocatalytic activity of holey ZnO nanosheets was observed using time-dependent photoluminescence (PL) spectroscopy with photodegradation kinetic determined from the PL intensity decay follows first-order reaction kinetic.

10.1039/d2nj00184e article EN New Journal of Chemistry 2022-01-01

In this article, we have studied the process of silver nanoparticles (AgNPs) aggregation and to stop 0.3% Polyvinylpyrrolidone (PVP) was used. Aggregation study carried out via UV-vis spectroscopy it is reported that absorption spectrum spherical were found a maximum peak at 420 nm wavelength. Furthermore, Transmission Electron Microscopy (TEM) used characterized size shape AgNPs, where average particle around 10 25 in diameter AgNPs spherical. Next, Dynamic Light Scattering (DLS) used,...

10.4028/www.scientific.net/ssp.263.165 article EN Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena 2017-09-01

MOFs as organic-inorganic hybrid crystalline porous materials with unprecedented chemical and structural tunability are normally composed of reversible coordination bonds. However, strong molecules can easily break the bonds, often collapse or transform into undervalued inorganic materials. Herein, we report a “weak base-assisted hydrolysis” strategy combined high-temperature carbonization to Zn-MOF-74 nanoparticles bundle-like carbon superstructure high surface areas. The utilization weakly...

10.2139/ssrn.4263663 article EN SSRN Electronic Journal 2022-01-01
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