Photocatalytic Hydrogen Production over Ni/La-NaTaO3 Nanoparticles from NaCl-water Solution in the Presence of Glucose as Electron Donor

Husni Husin; Komala Pontas; Yunardi Yunardi; Adi Salamun; Pocut Nurul Alam; Fikri Hasfita

Husni Husin Department of Chemical Engineering, Syiah Kuala University, Darussalam, 23111, Banda Aceh, Indonesia
Komala Pontas Department of Chemical Engineering, Syiah Kuala University, Darussalam, 23111, Banda Aceh, Indonesia
Yunardi Yunardi Department of Chemical Engineering, Syiah Kuala University, Darussalam, 23111, Banda Aceh, Indonesia
Adi Salamun Department of Chemical Engineering, Syiah Kuala University, Darussalam, 23111, Banda Aceh, Indonesia
Pocut Nurul Alam Department of Chemical Engineering, Syiah Kuala University, Darussalam, 23111, Banda Aceh, Indonesia
Fikri Hasfita Department of Chemical Engineering, Malikussaleh University, Lhoekseumawe, 24300, Aceh Utara, Indonesia

Keywords: La-doped sodium tantalum oxide, nickel, Photocatalyst, glucose, hydrogen energy

Abstract

Nanoparticles La-NaTaO₃ photocatalyst has been synthesized via a sol-gel route. A Ni nanoparticle (NPs) as a cocatalyst is loaded on La-NaTaO₃ by a simple impregnation method. The products are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), a high-resolution transmission electron microscope (HRTEM) and X-ray photoelectron spectroscopy (XPS). X-ray diffraction of the La-NaTaO₃ samples shows perovskite-type crystalline orthorhombic structure. Small particulate solids of La-NaTaO₃ (30-250 nm) are observed by SEM measurement. The nickel particles are detected from HRTEM images is around 4-8 nm. The hydrogen evolution over La-NaTaO3 with NaCl is much higher than that without NaCl. The photoactivity of La-NaTaO₃ is enhanced when Ni is loaded on the surface of La-NaTaO₃. The optimum loading amount of nickel is found to be 0.3 wt.% for La-NaTaO₃, and it is more effective for H₂ production from NaCl-water solution in the presence glucose. It is revealed that the loaded Ni can interact with each other and cooperate on improving the photocatalytic activity. In the case of glucose as an electron donor, the activity of photocatalytic hydrogen generation over Ni/La-NaTaO₃ increases dramatically. NaCl and glucose can promote markedly the photocatalytic hydrogen evolution. The Ni/La-NaTaO₃ nanoparticles system appears to be a promising candidate, which is very important to practical applications, including the production of H₂ from NaCl-water solution in the presence of glucose.

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