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A promising synergistic effect of nickel ferrite loaded on the layered double hydroxide-derived carrier for enhanced photocatalytic hydrogen evolution
Authors:Dan Chen  Fan Zhang  Qian Li  Weide Wang  Guangren Qian  Yonggang Jin  Zhiping Xu
Affiliation:1. Shanghai University, School of Environmental and Chemical Engineering, No. 333 NanCheng Road, Shanghai 200444, China;2. CSIRO Energy Flagship, PO BOX 883, Kenmore, QLD 4069, Australia;3. Australian Research Council (ARC) Centre of Excellence for Functional Nanomaterials, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
Abstract:In this study, an attempt was made to modify the photocatalytic properties of an ion-exchangeable semiconductor material to enhance the efficiency of hydrogen production. Visible-light active NiFe2O4 was loaded onto Ni/>Zn/Cr layered double hydroxide (LDH) (Ni/Zn molar ratio = 75/25) with the Fe/Cr molar ratio of 0.005, 0.010, and 0.015 as cocatalyst through a simple solvothermal process and subsequently subjected to calcination at temperature of 500 °C. The results revealed that the presence of the loaded cocatalyst significantly facilitated the photocatalytic activity and the mixed oxide with Fe/Cr = 0.010 displayed the highest photocatalytic activity for visible light-induced H<sub>2</sub> generation. The optimal amount of hydrogen evolution reached to 269.44 μmolh<sup>?1</sup> under visible light (λ > 420 nm), which is far superior to that of the pristine Ni<img style=
Keywords:Nickel ferrite  LDH-derived carrier  Photocatalysis  Hydrogen production
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