2,4-Dichlorophenoxyacetic acid functionalized gold nanoparticles: synthesis, characterization and biological effects

2014 ◽  
Vol 2 (21) ◽  
pp. 3299 ◽  
Author(s):  
Jin-Liang Jia ◽  
Li Zhu ◽  
Xiao-Yong Jin ◽  
Jie Wang ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Biological Effects ◽  
Dichlorophenoxyacetic Acid ◽  
Functionalized Gold Nanoparticles ◽  
Nanoparticles Synthesis ◽  
2,4 Dichlorophenoxyacetic Acid

scholarly journals Synthesis and characterization of gold nanoparticles on titanium dioxide for the catalytic photodegradation of 2,4-dichlorophenoxyacetic acid

2018 ◽  
Vol 16 (5) ◽  
Author(s):  
E. Romero Torres ◽  
M. Gutiérrez Arzaluz ◽  
V Mugica Alvarez ◽  
L. González Reyes ◽  
M. Torres Rodríguez ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Titanium Dioxide ◽  
Uv Light ◽  
Anatase Phase ◽  
Precipitation Method ◽  
Dichlorophenoxyacetic Acid ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Average Size ◽  
2,4 Dichlorophenoxyacetic Acid

The photocatalytic degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) using a Au/TiO2 catalyst and ultraviolet (UV) light energy source (9 mW/cm2) discussed. Gold nanoparticles were synthesized by controlled urea reduction and deposited on titanium dioxide (TiO2) by the deposition-precipitation method. The average size of the nanoparticles was 6-8 nm. X-ray diffraction (XRD) characterization confirmed that TiO2 was present in the anatase phase, whereas the presence and particle size of gold were determined by transmission electron microscopy (TEM). The results of the degradation showed that the activity of TiO2 was improved when Au nanoparticles were present on the surface. The reactions were performed at atmospheric pressure and room temperature.

Gold nanoparticles catalyzed chemiluminescence immunoassay for detection of herbicide 2,4-dichlorophenoxyacetic acid

The Analyst ◽  
2011 ◽  
Vol 136 (10) ◽  
pp. 2125 ◽  
Author(s):  
Robin Chandra Boro ◽  
Jyotsna Kaushal ◽  
Yogesh Nangia ◽  
Nishima Wangoo ◽  
Aman Bhasin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Dichlorophenoxyacetic Acid ◽  
Chemiluminescence Immunoassay ◽  
2,4 Dichlorophenoxyacetic Acid

scholarly journals Antioxidant effect of Physalis angulata fruit on cells exposed to 2,4- dichlorophenoxyacetic acid

2019 ◽  
Vol 7 (8) ◽  
pp. 374-386
Author(s):  
Roberta Cattaneo Horn ◽  
GABRIELA TASSOTTI GELATTI ◽  
JANA KOEFENDER ◽  
DIEGO PASCOAL GOLLE ◽  
MARIANA SPANEMBERG MAYER ◽  
...  
Keyword(s):  
Biological Effects ◽  
Damage Mechanism ◽  
Human Erythrocytes ◽  
Dichlorophenoxyacetic Acid ◽  
Cytotoxic Effects ◽  
Endogenous Antioxidants ◽  
Physalis Angulata ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Antioxidant Mechanisms

Several in vitro studies have described the erythrocyte toxicity mechanism response to the 2,4-dichlorophenoxyacetic acid (2,4-D) and its metabolites, strongly related to oxidative stress. Compounds such as ascorbic acid and flavonoids, present in various fructiferous plants like Physalis angulata L.- Solanaceae, are exogenous sources of antioxidants, which have aroused interest because of its beneficial biological effects to health by capturing oxygen reactive species. Here, was investigated the cytotoxic effects of the 2,4-D in human erythrocytes exposed to this herbicide and treated with the juice of P. angulata fruits. Analyzing the oxidant and antioxidant mechanisms in these cells in vitro, was demonstrated that the damage mechanism by the Physalis juice occurred at the level of cellular proteins and membranes, altering levels of endogenous antioxidants components such as reduced glutathione and uric acid, and exogenous like vitamin C. Our results indicate new insights into the mechanism of human erythrocytes response exposed to the P. angulata juice, providing wayforward to future studies of cytotoxicity.

Functionalized gold nanoparticles: Synthesis, structure and colloid stability

2009 ◽  
Vol 331 (2) ◽  
pp. 251-262 ◽  
Author(s):  
Jingfang Zhou ◽  
John Ralston ◽  
Rossen Sedev ◽  
David A. Beattie
Keyword(s):  
Gold Nanoparticles ◽  
Colloid Stability ◽  
Functionalized Gold Nanoparticles ◽  
Nanoparticles Synthesis
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