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A facile and rational strategy of immobilizing nickel nanoparticles (Ni NPs) on silica nanotubes (SiO2@C-Ni) was fabricated via a Stöber method, nickel ion mediated dopamine polymerization and carbonization treatment, coupled...

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Developing environmental-friendly and high-performance catalysts hold excellent prospects for pollution control. Herein, a novel nanocatalyst is successfully prepared through a facile insitu deposition method upon bridging copper phosphate and the protein, which allowing uniform Ag 3 PO 4 NPs to be immobilized on both inner and outer hierarchical nanoflowers. Results show that the fabricated hierarchical flower-like architecture of Cu 3 (PO 4 ) 2 @BSA@Ag 3 PO 4 composite demon-strated superior catalytic performance for the hydrogenation of 4-nitrophenol. Moreover, the hybrid nanoflowers hold a high conversion rate (around 95.4 %) and recycling stability over five reaction cycles. Therefore, such a convenient, economical and green approach to synthesize recyclable nanoflowers possesses broad application potential for the treatment of agricultural and industrial wastewater.