Sciences & technologie. A, sciences exactes
Volume 0, Numéro 39, Pages 107-117
2014-06-30
Synthesis And Characterization Of The Hybrid Ni-tio2/pani For An Efficient Hydrogen Photoproduction Under Visible Light
Authors : Nsiba Mohamed Faouzi . Saafia Samira . Rayesa Ali . Houasa Ammar .
Abstract
NixZn1-xO/Polyaniline hybrid photocatalysts are synthesized by the impregnation method at ambient temperature and used for hydrogen photoproduction experiments. XRD, UV-Vis DRS, SEM and TGA are used to characterize the prepared materials. It is shown that the Ni2+ amount doped into ZnO controls its morphology and enhances its photoactivity for H2 generation. Polyaniline (PANI) is shown to sensitize ZnO and to extend its light absorption toward the visible region. The hybrid photocatalyst with 10 mol. % Ni2+ and 10 wt. % PANI shows the maximum photocatalytic H2 production for one hour of visible irradiation: ~ 558 μmole while only ~ 178 μmole in the presence of pure ZnO. It is also observed that the hydrogen photoproduction efficiency depends strongly on the nature of the sacrificial electron donor and increases in the order: thiosulfate >sulfide> propanol.
Keywords
photocatalysis; Ni dopedZnO; polyaniline; hydrogen production.
Les articles similaires
بوسالم أحلام
.
عابد يوسف
.
ص 117-132.
Yahia Zeghoudi
.
pages 74-88.
Muke Musengele Bilasi Denis
.
Jérémie Muswema Lunguya
.
Pierre Lohohola Osomba
.
Joseph Malongwe K’ekuboni
.
Pascal Disa-disa Maziana
.
Omer Mvele Muamba
.
Trésor Ndonganzadi
.
Fifi Muderhwa Mulangala
.
Carlos Kabengele Nkongolo
.
Gracien Ekoko Bakambo
.
pages 167-179.
Zyoud Ahed H.
.
Hilal Hikmat S.
.
pages 127-137.
