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ZnO-based nanocomposites for hydrogen generation via hydrolysis of Borohydride

Research Abstract

Hydrogen storage and release using a solid-state material e.g., sodium borohydride (NaBH4) may fulfill the requirements for the ‘Hydrogen Economy’. This study reported ZnO-based materials for hydrogen release via the hydrolysis of NaBH4. Two different metal oxides e.g. CeO2 and TiO2 with different weight loading (5 wt.% and 10 wt.%) were used during the synthesis via a simple combustion method. The synthesis procedure offered nanocomposites consisting of ZnO-xTiO2, and ZnO-xCeO2 (x = 5 wt.% or 10 wt.%). Diffraction techniques (X-ray (XRD) and electron diffraction (ED)) confirm the phase purity of the material. Diffuse reflectance spectroscopy (DRS) and photoluminescence spectroscopy characterized the optical properties of the materials. The materials displayed a hydrogen generation rate (HGR) of 3000 mL·min−1·gcat−1. Thermodynamic analysis revealed that ZnO, ZnO-10TiO2, and ZnO-10CeO2 catalysts have activation energies of 59.8, 36.8, and 27.5 kJ·mol−1, respectively.

Research Authors
NA Althubiti, TA Taha, AA Azab, HN Abdelhamid
Research Date
Research Department
Research Member
Research Pages
837–846
Research Publisher
Springer Nature
Research Rank
Q1
Research Vol
106
Research Website
https://link.springer.com/article/10.1007/s10971-023-06099-6
Research Year
2023