Open AccessSynthesis and characterization of gold nanoparticles on titanium dioxide for the catalytic photodegradation of 2,4-dichlorophenoxyacetic acid
Author(s) -
Enelio Torres,
Mirella Gutiérrez-Arzaluz,
V. Múgica,
Leonardo González-Reyes,
Miguel Torres Rodríguez,
F. Morales,
C. Tzompantzi Flores
Publication year - 2018
Publication title -
journal of applied research and technology
Language(s) - English
Resource type - Journals
ISSN - 2448-6736
DOI - 10.22201/icat.16656423.2018.16.5.734
Subject(s) - photocatalysis , titanium dioxide , photodegradation , anatase , catalysis , nanoparticle , colloidal gold , materials science , nuclear chemistry , rutile , transmission electron microscopy , particle size , chemical engineering , inorganic chemistry , nanotechnology , chemistry , metallurgy , organic chemistry , engineering
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.