Open AccessPhotocatalytic Hydrogen Production from H2S using Nanostructured CNT blended CdZnS/Fe2O3Thin Film on Glass Substrate
Author(s) -
M. Raja,
V. Preethi,
Yash Pal,
Naresh Nalajala,
Chinnakonda S. Gopinath
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1495/1/012035
Subject(s) - materials science , photocatalysis , thin film , hydrogen production , substrate (aquarium) , scanning electron microscope , photoluminescence , hydrogen , chemical engineering , nuclear chemistry , analytical chemistry (journal) , catalysis , nanotechnology , composite material , optoelectronics , chemistry , organic chemistry , oceanography , geology , engineering
A co-precipitation method was employed to prepare the CNT blended CdZnS/Fe 2 O 3 photocatalyst. Using the powder photocatalyst, the thin film of CNT blended CdZnS/Fe 2 O 3 photocatalyst over a glass substrate was prepared using the drop-casting method. The obtained thin film was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDAX), photoluminescence (PL), and hydrogen production activity studies in order to obtain information on their structural, morphology, chemical composition, optical and hydrogen production efficiency. The hydrogen production activity of catalyst or effective conversion of H 2 S into hydrogen (H 2 ) and sulfur (S) using thin-film photocatalyst was evaluated using a simulated sulfide solution. The results showed that 1 mg of CNT blended CdZnS/Fe 2 O 3 catalyst coated as thin film over glass substrate (4.69 cm 2 ) showed the highest hydrogen production value of 3180 μmol h −1 g −1 ; compared to that of 1 mg CNT blended CdZnS/Fe 2 O 3 powder of 2510 μmol h −1 g −1 . From the above results, it is concluded that the thin film form of photocatlyst produced more hydrogen than the powder form. This is attributed to the effective charge separation and increased specific surface area in thin film photocatalyst.