ORCID Profile
0000-0003-0407-6072
Current Organisations
Curtin University
,
Curtin College
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8RA02909A
Abstract: This paper describes a modified method to prepare monodisperse Fe 3 O 4 magnetic nanoparticles with different shapes (cube, octahedron, and sphere).
Publisher: Desalination Publications
Date: 2018
Publisher: EJournal Publishing
Date: 2013
Publisher: American Scientific Publishers
Date: 02-2018
Abstract: Magnetic nanoparticles have been intensively developed and applied in several biomedical applications such as targeted delivery, drug therapy, hyperthermia, magnetic resonance imaging and bioseparation etc. This work describes a simple and convenient method to synthesize silica coated Fe3O4 nanoparticles which have the potential to be used in the bioseparation of fetuin from fetal bovine serum and albumin from the egg. In this work, uniform Fe3O4 particles were prepared through the one-pot solvothermal process at 200 °C for 12 h using a sole iron precursor (FeCl3 · 6H2O) and then were coated with SiO2 to prepare silica coated Fe3O4 nanoparticles by hydrolysis and condensation of tetraethyl orthosilicate in ethanol and H2O medium. We further characterized the synthesized Fe3O4 and Fe3O4@SiO2 using XRD, SEM, TEM, FT-IR and VSM to study phase purity, morphology, size, functionality and magnetic properties.
Publisher: Informa UK Limited
Date: 08-04-2016
Publisher: Elsevier BV
Date: 09-2022
DOI: 10.1016/J.JCIS.2022.04.087
Abstract: Zinc oxide nanoparticles (ZnO NPs) are important semiconductor materials with interesting photo-responsive properties. During the past, ZnO-based NPs have received considerable attention for photodynamic therapy (PDT) due to their biocompatibility and excellent potential of generating tumor-killing reactive oxygen species (ROS) through gentle photodynamic activation. This article provides a comprehensive review of the recent developments and improvements in optical properties of ZnO NPs as photosensitizers for PDT. The optical properties of ZnO-based photosensitizers are significantly dependent on their charge separation, absorption potential, band gap engineering, and surface area, which can be adjusted/tuned by doping, compositing, and morphology control. Here, we first summarize the recent progress in the charge separation capability, absorption potential, band gap engineering, and surface area of nanosized ZnO-based photosensitizers. Then, morphology control that is closely related to their synthesis method is discussed. Following on, the state-of-art for the ZnO-based NPs in the treatment of hypoxic tumors is comprehensively reviewed. Finally, we provide some outlooks on common targeted therapy methods for more effective tumor killing, including the attachment of small molecules, antibodies, ligands molecules, and receptors to NPs which further improve their selective distribution and targeting, hence improving the therapeutic effectiveness. The current review may provide useful guidance for the researchers who are interested in this promising dynamic cancer treatment technology.
Publisher: Elsevier BV
Date: 02-2023
DOI: 10.1016/J.JCIS.2022.11.031
Abstract: The photocatalytic degradation of conventional and emerging pollutants (i.e., methyl, ethyl, and butyl parabens) was investigated under light irradiation with 315-1050 nm wavelength using core-shell zinc doped hexacyanoferrate@Prussian blue nanoparticles. Different synthesis parameters including precursors loading, drying temperature and different metal ions precursors were studied. The ten different composite systems obtained, were investigated for the photodegradation of methylene blue in deionized water. The optimal performance photocatalyst (20 mg/L) photodegrade 94% of 10 ppm methylene blue within 24 min. The optimized s le was further used for the photodegradation of methylene blue in municipal wastewater matrix it completely degraded the methylene blue after 51 min. Finally, the developed nanoparticles were investigated for the photodegradation of parabens. The chemical oxygen demand showed 30% of parabens was degraded in the municipal wastewater matrix. The results of this research show that ZnHCF@PB nanoparticles could be used for the effective photocatalytic remediation of conventional and emerging pollutants, i.e., parabens. STATEMENT OF ENVIRONMENTAL IMPLICATION: Through this study, it is anticipated that ZnO-derived ZnHCF@PB NPs can achieve a bandgap of 1.11 eV, which is much lower than that of ZnO NPs (3.15 eV). Interestingly, ZnHCF@PB NPs were efficiently used for the degradation of conventional (i.e., dyes) and emerging contaminants (i.e., parabens) in deionized water and municipal wastewater matrices to mimic industrial wastewater.
Publisher: Wiley
Date: 12-11-2022
Abstract: Light‐dependent singlet oxygen ( 1 O 2 ) produced in photodynamic therapy (PDT), is a biologically compatible reactive oxygen species showing the potential to kill tumor cells with fewer side effects on nearby normal healthy cells. The development of a high 1 O 2 generating photosensitizer is a particularly demanding research areas. Based on Jablonski's diagram, the photophysical factors influencing the generation of 1 O 2 are intersystem crossing, triplet quantum yield and life, and the singlet‐triplet energy gap. Moreover, nanocarriers are also an emerging research topic with enhanced/localized delivery of photosensitizers to improve the dosage of light and enriched production of 1 O 2 . In this review, the production principle of 1 O 2 in PDT and its killing mechanism with respect to tumor cells are reviewed. In addition, the progress of PDT has been supplemented in clinical applications in recent years and the emergent preclinical tactics for prospective solutions to these challenges are discussed to improve the effectiveness and usefulness of these procedures. Moreover, the remaining research gaps and future work is outlined. This review is anticipated to heighten the research for developing new strategies for modulating the photophysical properties and improved the delivery of photosensitizers.
Publisher: Springer Science and Business Media LLC
Date: 21-01-2017
Publisher: Elsevier BV
Date: 05-2021
Publisher: Elsevier BV
Date: 2022
Publisher: No publisher found
Publisher: Elsevier BV
Date: 05-2022
DOI: 10.1016/J.JCIS.2022.01.086
Abstract: Semiconducting zinc oxide nanoparticles (ZnO NPs) hold great potential as photocatalysts in wastewater treatment because of their favorable bandgap and cost-effectiveness. Unfortunately, ZnO NPs usually show rapid charge recombination that limits their photocatalytic efficacy significantly. Herein, we report a facile way of modifying ZnO NPs with zeolite imidazole framework-8 (ZIF8). A synergy between the two components may tackle the drawback of fast charge recombination for pristine ZnO NPs. Improved performance of photocatalytic degradation of methylene blue (MB) is confirmed by comparing with pristine ZnO and ZIF8 as the catalysts. The ZIF8 in the composite serves as a trap for photogenerated electrons, thus reducing the rate of charge recombination to enhance the photocatalysis rate. In addition, the hybridization process suppresses the aggregation of ZnO NPs, providing a large surface area and a greater number of active sites. Moreover, a small shift in the absorption band of ZnO@ZIF8 (10) NPs towards higher wavelength, also witnessed a little contribution towards enhanced photocatalytic properties. Mechanistic studies of the photocatalytic process of MB using ZnO@ZIF8 NPs catalyst reveal that hydroxyl radicals are the major reactive oxygen species. The facile hybridization of ZnO with ZIF8 provides a strategy for developing new photocatalysts with wide application potential.
Publisher: American Scientific Publishers
Date: 03-2014
Publisher: Elsevier BV
Date: 11-2018
Publisher: Informa UK Limited
Date: 13-02-2015
Publisher: Desalination Publications
Date: 2018
Publisher: Springer Science and Business Media LLC
Date: 20-02-2016
No related grants have been discovered for HIRA FATIMA.