A comparative study of the plasmon effect of Ag and Au nanoparticles on TiO/rGO nanocomposite was carried out. The synthesis of Au and Ag nanoparticles was carried out by laser ablation. The morphology and structure of the nanocomposites were studied by EDA, HRTEM, XRD and Raman spectroscopy. It was shown that the absorption capacity of the nanocomposite material was increased in the visible range of the spectrum when Ag and Au nanoparticles were added to TiO/rGO. This leads to an increase in their photocatalytic activity. The photocurrent generated by NC/Au 10films is in 3.8 times and NC/Ag 10is in 2 times higher compared to pure TiO/rGO film. Similar results were obtained from experimental data on the dyes photodegradation. In the presence of plasmon nanoparticles a significant enhancement in the electrical properties of the TiO/rGO nanocomposite was recorded. The charge carrier transfer resistance in nanocomposites was decreased by almost ∼7 times for NC/Au,10and ∼4 times for NC/Ag,10films compared to pure TiO/rGO. In addition, for nanocomposites with Ag or Au nanoparticles, a decrease in the effective electron lifetime was observed. The data obtained allow us to conclude that plasmonic NPs have a synergistic effect in TiO/rGO nanocomposites, which consists in modifying both their light-harvesting properties and charge-transport characteristics. The results obtained can be used for the design of materials with improved photocatalytic and optoelectronic characteristics.
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http://dx.doi.org/10.1088/1361-6528/ad3e02 | DOI Listing |
Environ Sci Pollut Res Int
January 2025
Advanced Materials Research Laboratory, Department of Physics, Dr. Babasaheb Ambedkar, Marathwada University, Chhatrapati Sambhajinagar, 431004, M.S, India.
The rGO-based 5% Ni-doped CoO/TiO (GNCT) p-n heterojunction nanocomposite was synthesized using hydrothermal method. The resulting nanocomposite's morphology, structure, surface area, elemental composition, electrical and optical properties were thoroughly examined using a variety of techniques. The GNCT nanomaterial achieved an impressive 99.
View Article and Find Full Text PDFJ Fluoresc
December 2024
Department of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.
Photocatalysis-based technology has insight into decreasing the disadvantages of traditional approaches and has been identified as an appropriate way to eliminate dyes and bacteria from wastewater. In this work, FeO/rGO/TiO photocatalyst material was synthesized by a simple and fast hydrothermal method. The photocatalyst process results showed that FeO/rGO/TiO nanocomposite degraded methylene blue dye completely in 4 min.
View Article and Find Full Text PDFRSC Adv
November 2024
King Abdullah Institute for Nanotechnology, King Saud University Riyadh 11451 Saudi Arabia.
Nanocomposites (NCs) have attractive potential applications in gas-sensing, energy, photocatalysis, and biomedicine. In the present work, the fabrication of CuO/ZrO/TiO/RGO nanocomposites (NCs) was done a simple chemical route. Our aim in this work was to synthesis and investigate the selective anticancer activity of TiO NPs by supporting CuO, ZrO, and RGO toward cancer and normal cells.
View Article and Find Full Text PDFACS Sens
November 2024
School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea.
Selective detection and monitoring of hazardous gases with similar properties are highly desirable to ensure human safety. The development of flexible and room-temperature (RT) operable chemiresistive gas sensors provides an excellent opportunity to create wearable devices for detecting hazardous gases surrounding us. However, chemiresistive gas sensors typically suffer from poor selectivity and zero-cross selectivity toward similar types of gases.
View Article and Find Full Text PDFSci Total Environ
December 2024
Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA.
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