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

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.