Abstract: Study of hydrogen
production as a green energy on NaTaO3 photocatalyst has been done. The aim of
this work is to study the photocatalytic properties of NaTaO3 and NiO
incorporated NaTaO3 used in water splitting reaction. The NaTaO3
powder with high crystallinity has been synthesized by a H2O2-asissted
sol-gel route calcined at a temperature of 900oC. NiO as a cocatalyst
is deposited by impregnation of Ni(NO3)2.6H2O solution. The catalysts are characterized
by X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution
transmission electron microscopy (HRTEM), and diffuse reflectance UV-Vis
(DR-UV-Vis). The photocatalysts have a band gap energy ca. 4.01 and 4.00 eV
(corresponding to absorption edge of 310 and 311 nm). Photocatalytic activity
towards hydrogen generation from water is investigated using a glass reactor
under ultra violet (UV) light illumination. Photocatalytic of H2 and
O2 production on the pristine NaTaO3 are 0.61 and 0.30 mmol g-1
cat.h-1, respectively. The activities are greatly enhanced 8.5
times higher by the incorporation of NiO as cocatalysts on the prepared oxides.
NiO is found to give rise to more efficient photocatalytic activity for hydrogen
evolution. The NaTaO3 nanoparticles produces using this facile have: better crystallinity,
smaller size, and higher photocatalytic activity.
Keywords: Sodium tantalum
oxide; Nickel oxide; Sol-gel; impregnation; Hydrogen evolution
Penulis: Husni
Kode Jurnal: jpkimiadd120032
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