scholarly journals Statistical Study of Nonthermal Plasma-Assisted ZnO Coating of Cotton Fabric through Ultrasonic-Assisted Green Synthesis for Improved Self-Cleaning and Antimicrobial Properties

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6998
Author(s):  
Muhammad Irfan ◽  
Muhammad Y. Naz ◽  
Muhammad Saleem ◽  
Malik Tanawush ◽  
Adam Głowacz ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Green Synthesis ◽  
Cotton Fabric ◽  
Control Sample ◽  
Antimicrobial Properties ◽  
Nonthermal Plasma ◽  
The Self ◽  
Protection Factor ◽  
Self Cleaning ◽  
Coated Cotton

Nonthermal plasma processing is a dry, environment-friendly and chemical-free method of improving the wettability, adhesion, self-cleaning and dying quality of fabrics without affecting their bulk properties. This study presents a green synthesis and coating method for the immobilization of nanoparticles of ZnO on the nonthermal plasma functionalized cotton fabric. The self-cleaning activity of ZnO-coated cotton was then optimized statistically. The ultraviolet protection and antimicrobial activity of the optimized and a control sample were also elaborated in this study. Psidium guajava Linn (guava) plant extract and zinc chloride were used in the ultrasonic biosynthesis of ZnO nanoparticles and concurrent immobilization over plasma functionalized cotton. Sodium hydroxide was used as a reaction accelerator. Statistical complete composite design (CCD) based on the amount of ZnCl2, NaOH and plasma exposure time was used to optimize the role of input parameters on the self-cleaning ability of the coated cotton. Methylene blue in water was used as a sample pollutant in the self-cleaning study. The ZnO-coated cotton showed notably high self-cleaning activity of 94% and a UV protection factor of 69.87. The antimicrobial activity against E. Coli and S. Aureus bacteria was also appreciably high compared to the control.

scholarly journals Regioselective Green Synthesis and Antimicrobial properties of full fused non mixed Heterocyclic Systems

2017 ◽  
Vol 13 (2) ◽  
pp. 6006-6020
Author(s):  
Amira A. El-Sayed ◽  
Maher El-HAshash ◽  
Sameh Rizk
Keyword(s):  
Antimicrobial Activity ◽  
Green Synthesis ◽  
Elemental Analysis ◽  
Spectroscopic Data ◽  
Heterocyclic Compounds ◽  
Antimicrobial Properties ◽  
One Pot ◽  
One Pot Synthesis ◽  
Electrophilic Reagents

One pot synthesis and reaction of triazinthione and triazinohydrazide derivatives with different electrophilic reagents in ordered to synthesis of some interesting non-mixed heterocyclic compounds. Structures of thiazolotriazine, triazolotriazine, pyrimidinyltriazine, and triazinotriazine derivatives were established via spectroscopic data and elemental analysis. The synthesized compounds were screened for their antimicrobial activity.

Effect of Silane Coupling Agent on the Self-Cleaning Property of TiO2-Coated Cotton Fabrics

2013 ◽  
Vol 634-638 ◽  
pp. 960-964
Author(s):  
De Yong Wu ◽  
Lian Zhi Wang
Keyword(s):  
Photocatalytic Activity ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Cotton Fabrics ◽  
The Self ◽  
Excellent Photocatalytic Activity ◽  
Silane Coupling ◽  
Self Cleaning ◽  
Good For ◽  
Coated Cotton

Self-cleaning fabrics have been successfully prepared by depositing and grafting TiO2 nanoparticles, and silane coupling agent 3-Aminopropyltriethoxysilane was adopted to improve the photocatalytic activity of self-cleaning fabrics. TEM results showed that the treatment of silane coupling agent is good for increasing the amount of TiO2 particles. The excellent photocatalytic activity of TiO2-coated cotton fabrics is attributed the increase of TiO2 particles and the formation of the TiO2/SiO2 structure.

Influence of nano titanium dioxide finish, prepared by sol-gel technique, on the ultraviolet protection, antimicrobial, and self-cleaning characteristics of cotton fabrics

2011 ◽  
Vol 41 (3) ◽  
pp. 259-277 ◽  
Author(s):  
K Sundaresan ◽  
A Sivakumar ◽  
C Vigneswaran ◽  
T Ramachandran
Keyword(s):  
Antimicrobial Activity ◽  
Sol Gel ◽  
Cotton Fabrics ◽  
Uv Protection ◽  
Protection Factor ◽  
Gel Technique ◽  
Ultraviolet Protection ◽  
Self Cleaning ◽  
Nano Titanium Dioxide ◽  
Nano Sol

The performance of ultraviolet (UV) protection, antimicrobial activity, and self-cleaning characteristics of nano titanium dioxide (TiO2) with acrylic binder were assessed on the cotton fabric using pad-dry-cure method. Titanium iso-propoxide was used as precursor with two different mediums of water and ethanol to synthesize nano-sol by sol-gel technique. The synthesized nano-sol-gel was then characterized by using Fourier transform infrared (FTIR) spectroscopy, particle size analyzer (PSA), X-ray powder diffractometry (XRD), and scanning electron microscopy (SEM). The nano TiO2 finished cotton fabrics were tested for ultraviolet protection factor (UPF), antimicrobial activity, self-cleaning action, and physical properties. The wash fastness of TiO2 nano finished cotton fabrics for 5th, 10th, 15th, and 20th washes was assessed and also their ultra protection factor values and the percentage reduction in bacteria in each stage were reported. The self-cleaning activity was assessed for 12 hours, 24 hours, and 48 hours duration by exposing coffee stain on the specimen fabrics to sunlight. The TiO2 nanoparticles had 12 nm when ethanol medium was used and 7 nm for water. The smaller nanoparticles had showed better results regards antimicrobial activity and self-cleaning. In case of UV-protection function it was found that the fabrics treated with 12 nm nanoparticles exhibit higher UPF values than the fabric treated with 7 nm nanoparticles. The durability of the imparted function was in the range of 32–36 washes for antimicrobial activity and UV-protection property.

CsxWO3 nanosheet-coated cotton fabric with multiple functions: UV/NIR shielding and full-spectrum-responsive self-cleaning

2019 ◽  
Vol 475 ◽  
pp. 325-333 ◽  
Author(s):  
Linghui Peng ◽  
Weifan Chen ◽  
Bin Su ◽  
Aibing Yu ◽  
Xuchuan Jiang
Keyword(s):  
Cotton Fabric ◽  
Full Spectrum ◽  
Multiple Functions ◽  
Self Cleaning ◽  
Coated Cotton

scholarly journals Green Synthesis, Characterization and Antimicrobial Evaluation of Silver Nanoparticles for an Intracanal Dressing

2020 ◽  
Vol 31 (5) ◽  
pp. 485-492
Author(s):  
João Felipe Bonatto Bruniera ◽  
Leonado Gabriel-Silva ◽  
Rafael Silva Goulart ◽  
Yara Teresinha Corrêa Silva-Sousa ◽  
Marilisa Guimarães Lara ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Clinical Laboratory ◽  
Antimicrobial Properties ◽  
Absorption Spectrometry ◽  
Minimal Bactericidal Concentration ◽  
Bacterial Strains ◽  
Molecular Absorption Spectrometry ◽  
Antimicrobial Evaluation

Abstract Green chemistry has been applied in different areas due to the growing demands for renewable processes and one of them is nanotechnology. The aim of this study was to characterize a formulation containing silver nanoparticles (AgNPs) produced by a green synthesis and to evaluate its antimicrobial activity. The formulation will be used as an intracanal dressing exploiting the AgNPs’ antimicrobial properties, which are crucial to prevent infections and bacterial reinfections that can compromise endodontic treatments. In the green synthesis, silver nitrate was employed as the precursor salt, maltose as a reducing agent, and gelatin as a stabilizing agent. The formulation was prepared mixing 50 % of a liquid containing the AgNPs and 50 % of hydroxyethylcellulose gel at 1.5 % with proper evaluation of the process inherent parameters. Techniques such as molecular absorption spectrometry and dynamic light scattering were used in characterization step. The antimicrobial activity of the AgNPs against Escherichia coli ATCC 25922, Enterococcus faecalis NCTC 775, Pseudomonas aeruginosa ATCC 27853, Staphylococcus aureus ATCC 25923 and Streptococcus mutans ATCC 25175 was verified according to National Comittee for Clinical Laboratory Standards (NCCLS) by determining minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). The obtained results indicated the formulation containing AgNPs produced by a green synthesis was properly characterized by the selected techniques. Furthermore, the formulation assessment proved that it is suitable for the proposal as well as it has potential to be used as an intracanal dressing since presented antimicrobial activity against all bacterial strains evaluated.

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