Algae Extraction Controllable Delamination of Vanadium Carbide Nanosheets with Enhanced Near‐Infrared Photothermal Performance
Shah Zada, Wenhao Dai, Kai Zhang, Huiting Lu, Xiangdan Meng, Yiyi Zhang, Yaru Cheng, Yan Fang, Pengcheng Fu, Xueji Zhang, Haifeng Dong
Abstract
Abstract The two‐dimensional (2D) vanadium carbide (V 2 C) MXene has shown great potential as a photothermal agent (PTA) for photothermal therapy (PTT). However, the use of V 2 C in PTT is limited by the harsh synthesis condition and low photothermal conversion efficiency (PTCE). Herein, we report a completely different green delamination method using algae extraction to intercalate and delaminate V 2 AlC to produce mass V 2 C nanosheets (NSs) with a high yield (90 %). The resulting V 2 C NSs demonstrated good structural integrity and remarkably high absorption in near infrared (NIR) region with a PTCE as high as 48 %. Systemic in vitro and in vivo studies demonstrate that the V 2 C NSs can serve as efficient PTA for photoacoustic (PA) and magnetic resonance imaging (MRI)‐guided PTT of cancer. This work provides a cost‐effective, environment‐friendly, and high‐yielding disassembly approach of MAX, opening a new avenue to develop MXenes with desirable properties for a myriad of applications.