Hydrogen production from water-glucose solution over NiO/La-NaTaO3 photocatalyst

3rd International Conference on Chemical Engineering Sciences and Applications 2017

Mardian, R.^1 ; Husin, H.^1,2 ; Pontas, K.^1,2 ; Zaki, M.^1,2 ; Asnawi, T.M.^2 ; Ahmadi, A.^2

Graduate Program in Chemical Engineering, Syiah Kuala University, Darussalam, Banda Aceh

23111, Indonesia^1

Department of Chemical Engineering, Syiah Kuala University, Darussalam, Banda Aceh

23111, Indonesia^2

关键词: Electron-hole recombination;    Hydrogen generations;    Orthorhombic structures;    Photocatalytic activities;    Photocatalytic efficiency;    Ultraviolet irradiations;    UV-light irradiation;    Water splitting reactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/334/1/012013/pdf
DOI  :  10.1088/1757-899X/334/1/012013

来源: IOP

【 摘 要 】

This paper reports the evaluation of La-NaTaO3photocatalyst performance in producing hydrogen from water-glucose solution. The main goal of the studies is to investigate the influence of glucose as a sacrificial reagent on the photocatalytic efficiency in water splitting reactions under ultraviolet (UV) irradiation. Photocatalyst has been fabricated via sol-gel method and being confirmed using x-ray diffraction (XRD) and scanning electron microscopy (SEM). Nickel loaded La-NaTaO3photocatalyst are prepared by impregnation method. It was observed that the prepared photocatalysts displayed particle sizes in the 30-250 nm range with orthorhombic structure. Their photocatalytic activity for hydrogen production via water splitting was conducted in a Pyrex glass reactor under UV light irradiation. The aqueous solution contained glucose employed as a renewable organic scavenger. A significant improvement in hydrogen production was observed in glucose-water mixtures and NiO loaded photocatalyst. The prepared La-NaTaO3showed that the highest activity for hydrogen generation of 35.1 mmol h-1.g-1was obtained at 0.10 mol.L-1glucose and 0.3 wt.% NiO. This suggests the important role played by the glucose as electron donor and loading nickel on La-NaTaO3as a cocatalyst increasing electron storage and suppressing electron-hole recombination.