TY - JOUR
T1 - Study of Methylene Blue Degradation by Gold Nanoparticles Synthesized within Natural Zeolites
AU - Rodriguez Leon, Ericka
AU - Larios Rodriguez, Eduardo
AU - Rodriguez Beas, Cesar
AU - Plascencia-Villa, German
AU - Iniguez Palomares, Ramon Alfonso
N1 - Publisher Copyright:
© 2016 Ericka Rodríguez León et al.
PY - 2016
Y1 - 2016
N2 - We carried out the in situ synthesis of gold nanoparticles inside a natural clinoptilolite-type zeolite matrix, using ascorbic acid as reducing agent. The microstructure of both zeolite and zeolite-gold nanocomposite was characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Scanning Transmission Electron Microscopy (STEM), and Energy-Dispersive X-ray Spectroscopy (EDS) techniques. Size distribution as assessed by STEM indicated that 60% of gold nanoparticles measured less than 2.5 nm. Determination of the surface area by the BET method revealed a specific value of 27.35 m2/g. The catalytic activity of zeolite-gold regarding methylene blue degradation under different light-exposing conditions was evaluated by UV-Vis spectroscopy. The results indicated that 50% degradation was achieved in only 11 min in presence of sunlight. This reaction was faster in comparison with those obtained using a white LED light. A notable aspect of this study is that catalysis was carried out without the addition of any strong reducing agents, such as sodium borohydride (NaBH4).
AB - We carried out the in situ synthesis of gold nanoparticles inside a natural clinoptilolite-type zeolite matrix, using ascorbic acid as reducing agent. The microstructure of both zeolite and zeolite-gold nanocomposite was characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Scanning Transmission Electron Microscopy (STEM), and Energy-Dispersive X-ray Spectroscopy (EDS) techniques. Size distribution as assessed by STEM indicated that 60% of gold nanoparticles measured less than 2.5 nm. Determination of the surface area by the BET method revealed a specific value of 27.35 m2/g. The catalytic activity of zeolite-gold regarding methylene blue degradation under different light-exposing conditions was evaluated by UV-Vis spectroscopy. The results indicated that 50% degradation was achieved in only 11 min in presence of sunlight. This reaction was faster in comparison with those obtained using a white LED light. A notable aspect of this study is that catalysis was carried out without the addition of any strong reducing agents, such as sodium borohydride (NaBH4).
UR - http://www.scopus.com/inward/record.url?scp=84978435472&partnerID=8YFLogxK
U2 - 10.1155/2016/9541683
DO - 10.1155/2016/9541683
M3 - Artículo
SN - 1687-4110
VL - 2016
JO - Journal of Nanomaterials
JF - Journal of Nanomaterials
M1 - 9541683
ER -