Nanocomposite materials are emerging in popularity due to their enhanced performance over the constituent materials. In this work, we report the fabrication of zinc oxide: cobalt oxide nanocomposites in a simple, fast and room temperature synthesis with good productivity. The nanocomposites synthesized were characterized by SEM, XPS and UV-Visible spectroscopy to analyze their morphology, composition, chemical states, optical absorption, band gap etc. The nanocolloids of the composite were drop casted to form thin films for photocatalytic studies. In SEM analysis, the morphological transformation of the material is observed where it transformed from agglomerated spherical particles to petals shaped and then to partially spherical forms due to pulsed laser irradiation. XPS analysis showed a gradual change in oxygen high resolution spectra in the samples with respect to the concentration difference of cobalt oxide. The optical studies show an enhanced absorption in visible region for the nanocomposite and the energy band gap reduced to 2.4 eV. All the thin films of nanocomposite showed photocatalytic decay of methylene blue dye under visible light irradiation. The results of this study support the effective use of laser irradiation in liquid to obtain nanocomposites of metal oxides for photocatalytic applications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7513878 | PMC |
| http://dx.doi.org/10.1016/j.matpr.2020.08.533 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Significant Tumor Inhibition of Trimethyl-152-[L-aspartyl]pheophorbide a in Tumor Photodynamic Therapy‡.
ChemMedChem
March 2025
Donghua University, Pharmaceutical Science & Technology, CHINA.
A novel pheophorbide derivative, trimethyl-152-[L-aspartyl]pheophorbide a was synthesised and investigated for anti-tumor activity. The prepared photosensitizer had good absorption in the phototherapeutic window and high ROS yields. It exhibited excellent phototoxicity higher than reference compound m-THPC when irradiated by 650 nm light in vitro, and obvious photodynamic anti-tumor effect in vivo.
View Article and Find Full Text PDFFormation of Homogeneous Nanostructure via Interference of Square Flattop Femtosecond Laser Pulses.
Nanomaterials (Basel)
February 2025
Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Nakacho, Koganei 184-8588, Tokyo, Japan.
We report on the formation of homogeneous nanostructures using a two-step ablation process with square flattop beams of femtosecond (fs) laser pulses. The Gaussian beam output from a ytterbium fs laser system was converted to a square flattop beam by a refractive beam shaper and a square mask. This beam was split into two with a diffraction optical element, and then the downsized beams were spatially and temporally superimposed on a titanium surface.
View Article and Find Full Text PDFLaser Irradiation and Property Correlation in Double-Lasing Processes on Laser-Induced Graphene Electrodes.
Nanomaterials (Basel)
February 2025
Department of Chemistry, Research Institute for Basic Sciences, Kyung Hee University, Seoul 02447, Republic of Korea.
The fabrication of laser-induced graphene (LIG) electrodes by direct laser writing techniques has received considerable attention due to its simplicity, versatility, and cost-effectiveness for electrochemical applications in both sensing and energy storage. In general, a single-lasing irradiation process is used to prepare LIG electrodes. However, the intrinsic features of LIG can be further improved by taking advantage of additional lasing processes, even without any chemical treatments.
View Article and Find Full Text PDFTransdermal therapeutic polymer: synthesis of biocompatible polymer using 5-aminolevulinic acid as a photosensitizer precursor and a polymer initiator.
Mater Horiz
March 2025
College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea.
Melanoma is the most malignant skin tumor caused by the malignancy of melanocytes that produce the melanin pigment. Various methods have been developed to combat melanoma, with photodynamic therapy (PDT) gaining the spotlight for its ability to eliminate cancer cells by generating reactive oxygen species through light-sensitive photosensitizers. 5-aminolevulinic acid (5-ALA) is the most commonly used PDT agent, which could be converted to the PpIX photosensitizer molecule within cancer cells.
View Article and Find Full Text PDFExceptional Near-Infrared II Organic Small Molecule Nanoagent for Photoacoustic/Photothermal Imaging-Guided Highly Efficient Therapy in Cancer.
Bioconjug Chem
March 2025
State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
Near-infrared II (NIR-II) photoacoustic (PA)/photothermal imaging-guided tumor therapy holds great promise in precision medicine for cancer treatment. This work reports on the synthesis and application of an organic small molecule nanoagent that has exceptional PA and photothermal properties in the near-infrared region. BCy-TPE was constructed by linking an NIR-II absorbing cyanine dye BCy-Cl with a twisted tetraphenylethene unit.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!