The development of durable multifunctional properties is crucial for the production of high-performance technical textiles. In this work, a novel, environmentally friendly and facile method was developed for the chemical modification of cotton fabric by in situ biosynthesis of Ag NPs in the presence of sumac leaf extract as a reducing agent on TiO, ZnO and TiO + ZnO previously applied to cotton fibres. The results showed that the presence of TiO, ZnO and TiO + ZnO significantly increased the concentrations of the synthesised Ag NPs on the cotton fibres compared to the one-component Ag coating. This resulted in excellent antimicrobial properties of the TiO/Ag, ZnO/Ag and TiO + ZnO/Ag composites even after 25 washes. While the TiO and ZnO particles in the composite were incompatible, the synergistic effect among Ag, TiO and ZnO in the composites resulted in excellent UV blocking properties of the coatings before and after 25 washes. Since the biosynthesis of Ag NPs was accompanied by a yellow-brown colouration of the samples, the photocatalytic self-cleaning of the composite coating could not be determined from the photodegradation rate of the coffee stains. This research provides a new environmentally friendly approach to producing durable antimicrobial and UV blocking coatings on cotton fibres.
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http://dx.doi.org/10.3390/nano12183140 | DOI Listing |
Nanoscale Adv
December 2024
Department of Chemistry and Biochemistry, University of Arkansas Fayetteville AR 72701 USA
The use of metal oxide catalysts to enhance plasma CO reduction has seen significant recent development towards processes to reduce greenhouse gas emissions and produce renewable chemical feedstocks. While plasma reactors are effective at producing the intended chemical transformations, the conditions can result in catalyst degradation. Atomic layer deposition (ALD) can be used to synthesize complex, hierarchically structured metal oxide plasma catalysts that, while active for plasma CO reduction, are potentially vulnerable to degradation due to their high surface area and nanoscopic thickness.
View Article and Find Full Text PDFTalanta
December 2024
School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China. Electronic address:
The growing modern industry has promoted the development of gas sensors for environmental monitoring and safety checks. However, the traditional chemical resistance gas sensor still has some disadvantages such as high power consumption and limited detection, mainly due to the lack of charge transfer ability of sensing materials. In this paper, an ordered UV-activated gas sensor with mesoporous ZnO/TiO nanotube composite was prepared by precisely controlling the growth of ZnO on the inner wall of TiO nanotube.
View Article and Find Full Text PDFEnviron Sci Technol
December 2024
State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Chemical control of head blight (FHB) in wheat plants is often challenged by the resistance outbreak and deoxynivalenol (DON) accumulation. Developing green partners for fungicides is crucial for reducing fungal growth, mycotoxin contamination, and agricultural fungicides input. Herein, we investigated the mechanism of MgO nanoparticles (NPs) in controlling FHB.
View Article and Find Full Text PDFLuminescence
December 2024
Department of Chemistry, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia.
This study investigates the optical, mechanical, and antimicrobial properties of polypropylene (PP) fibers enhanced with titanium dioxide (TiO) and zinc oxide (ZnO) nanoparticles. Using a Mach-Zehnder interferometric system, we examined the refractive indices, birefringence, and opto-mechanical behavior of blank PP, PP/TiO, and PP/ZnO nanocomposite fibers under various conditions, including different polarization orientations and during cold drawing processes. The 2D Fourier transform algorithm is employed to analyze interferometric data, enabling precise measurements of refractive index profiles and birefringence.
View Article and Find Full Text PDFEcotoxicol Environ Saf
December 2024
Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea; Institute of Health and Environment, Seoul National University, Seoul, South Korea. Electronic address:
In recent years, concerns regarding the toxicity of organic UV filters in sunscreen products have increased. While sunscreen products contain multiple UV filters in combination, current understanding on their co-occurrence patterns and mixture toxicities is still limited. This study utilized a public database, "Hwahae", and analyzed 2183 sunscreen products marketed in South Korea as of 2019, using an association rule mining (ARM) to elucidate their co-occurrence patterns.
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