Synthesis of Prussian blue analogue nanoboxes with enhanced photothermal and catalytic performance.

A novel Prussian blue analogue CuMnFe nanoboxes with enhanced photothermal and catalytic performance were prepared and optimized by an S etching method. Introduction of S played a key role for their enhanced performance, which was expected to break through the inherent limitations and greatly expand the applications of Prussian blue analogue in biomedicine. [Display omitted] • A novel CuMnFe nanoboxes were prepared and optimized by an S etching method. • The introduction of S played a key role for their enhanced performance. • The Mechanism of the enhanced performance was discussed. • The applications of Prussian blue analogue were expanded greatly. Recently, Prussian blue analogues (PBA) were widely studied in energy and electrochemistry field. However, the strategy of preparation for PBA nanoboxes with enhanced photothermal conversion effect is rarely discussed due to the lower absorption in near infrared region (NIR) of PBAs. Herein, a novel CuMnFe nanobox was prepared for the first time by a simple S etching method. After S etching, the as-prepared CuMnFe nanobox possessed outstanding photothermal conversion performance and amazing catalytic activity due to introduction of S element. Various optimization experiments were also performed to investigate the preparation of CuMnFe nanobox. The mechanism of the enhanced performance was also discussed. This work will pave a way to enhance the performance of PBAs and expand their application from traditional energy chemistry to the field of biomedicine. [ABSTRACT FROM AUTHOR]