Preparation of NiFe2O4 nanoparticles and its visible-light-driven photoactivity for hydrogen production

Magnetic NiFe2O4 nanoparticles were synthesized via a hydrothermal and calcination process. The obtained NiFe2O4 with an average diameter of 17.8 nm and specific surface area of 76.2 m2 g− 1 is first used as a photocatalyst for hydrogen production, and exhibits an obvious visible-light-driven photoactivity, and therefore is promising in the practical application as a magnetically separable and visible-light-responsive photocatalyst without Pt-loading.

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► Nanosized NiFe2O4 was firstly used as a photocatalyst for hydrogen production.
► Visible-light-driven photoactivity and remarkable stability
► Without Pt-loading and easy to be separated under an external magnetic field