TY - JOUR
T1 - One-pot synthesis of ru-doped ZnO oxides for photodegradation of 4-chlorophenol
AU - Manríquez, Maria E.
AU - Noreña, Luis Enrique
AU - Wang, Jin An
AU - Chen, Lifang
AU - Salmones, Jose
AU - González-García, Julio
AU - Reza, Carmen
AU - Tzompantzi, Francisco
AU - Cortez, José G.Hernández
AU - Ye, Liqun
AU - Xie, Haiquan
N1 - Publisher Copyright:
Copyright © 2018 Maria E. Manríquez et al.
PY - 2018
Y1 - 2018
N2 - The photocatalytic degradation of 4-chlorophenol in water using Ru-doped ZnO mixed oxides (0, 0.5, 1, and 3 wt% RuO2) synthesized by the one-pot homogeneous coprecipitation method is reported. ZnO with wurtzite structure was present in the mixed oxide as corroborated by Raman spectroscopy and X-ray diffraction analysis. All the samples showed nanorod morphological features. The presence of Ru6+/Ru4+ couples on ZnO modified the band gap of the mixed oxides and led to a shift of the band gap energy from 3.20 eV to 3.07 eV. Ru addition increased the surface area and significantly promoted the formation of active surface oxygen species such as hydroradicals evidenced by the fluorescence spectroscopy measurement. In the photodegradation of 4-chlorophenol solution under UV irradiation, a notable increase in photoactivity was obtained as the amount of RuO2 in the mixed oxides increased to 3 wt%. The charge transfer between Ru6+/Ru4+ couples and ZnO nanoparticles together with the formation of free radical oxidant species effectively inhibits electron-hole recombination rate, thus favoring the photodegradation of 4-chlorophenol.
AB - The photocatalytic degradation of 4-chlorophenol in water using Ru-doped ZnO mixed oxides (0, 0.5, 1, and 3 wt% RuO2) synthesized by the one-pot homogeneous coprecipitation method is reported. ZnO with wurtzite structure was present in the mixed oxide as corroborated by Raman spectroscopy and X-ray diffraction analysis. All the samples showed nanorod morphological features. The presence of Ru6+/Ru4+ couples on ZnO modified the band gap of the mixed oxides and led to a shift of the band gap energy from 3.20 eV to 3.07 eV. Ru addition increased the surface area and significantly promoted the formation of active surface oxygen species such as hydroradicals evidenced by the fluorescence spectroscopy measurement. In the photodegradation of 4-chlorophenol solution under UV irradiation, a notable increase in photoactivity was obtained as the amount of RuO2 in the mixed oxides increased to 3 wt%. The charge transfer between Ru6+/Ru4+ couples and ZnO nanoparticles together with the formation of free radical oxidant species effectively inhibits electron-hole recombination rate, thus favoring the photodegradation of 4-chlorophenol.
UR - http://www.scopus.com/inward/record.url?scp=85062391699&partnerID=8YFLogxK
U2 - 10.1155/2018/7605306
DO - 10.1155/2018/7605306
M3 - Artículo
AN - SCOPUS:85062391699
SN - 1110-662X
VL - 2018
JO - International Journal of Photoenergy
JF - International Journal of Photoenergy
M1 - 7605306
ER -