Abstract
The nickel titanate nanofibers (NiTiO3 NFs) and silver nanoparticles (Ag NPs) were synthesized by electrospinning and citrate reduction technique. The Ag NPs was decorated with different weight percentage onto the NFs surface by ultrasonication. Scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) not only portrayed the surface morphology of the samples but also revealed that Ag was well decorated onto the NFs surface. Photoelectrochemical (PEC) studies showcased that the surface plasmon resonance (SPR) effect of Ag NPs enhanced the NFs absorption capability by restraining the photogenerated electron-hole pairs recombination effectively. Using methylene blue (MB) solution the photocatalytic activity of the prepared catalysts was determined. The obtained results manifest that bare NiTiO3 NFs and Ag NPs degraded 42% and 55% of MB under visible light, while 3% Ag-decorated NF composite degraded 93% under visible light in 3 hr. The degradation process of pure and Ag-decorated NF composite was constant with the first-order kinetic equation. The photocatalytic performance of Ag-decorated NF composite samples was better than bare NiTiO3 NFs and Ag NPs. It was observed that the rate constant determined the dye degradation efficiency.
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