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One-pot synthesis of MoSe_2 hetero-dimensional hybrid self-assembled by nanodots and nanosheets for electrocatalytic hydrogen evolution and photothermal therapy

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Mao Baoguang 1   Bao Tao 2   Yu Jie 2   Zheng Lirong 3   Qin Jinwen 1   Yin Wenyan 2 *   Cao Minhua 1 *  
文摘 We designed and prepared a hetero-dimensional hybrid (HDH) based on molybdenum selenide (MoSe_2) nanodots (NDs) anchored in few-layer MoSe_2 nanosheets (NSs) (MoSe_2 HDH) via a one-pot hydrothermal process. The MoSe_2 HDH exhibits excellent electrocatalytic activity toward hydrogen evolution reaction (HER). This is because, on the one hand, the edge-abundant features of MoSe_2 NDs and the unique defect-rich structure at the interface of MoSe_2 NSs/NDs could bring in more active sites for HER; on the other hand, the random stacking of the flake-like MoSe_2 NSs on the surface of the supporting electrode may achieve efficient charge transport. Additionally, the MoSe_2 HDH shows good water stability, desirable biocompatibility, and high near infrared (NIR) photothermal conversion efficiency. Therefore, the MoSe_2 HDH is investigated as a nanomedicine in NIR photothermal therapy (PTT) for cancer. Specifically, the MoSe_2 HDH can be applied as a dual-modal probe for computed tomography (CT) and photoacoustic tomography (PA) imaging owing to its strong X-ray attenuation ability and NIR absorption. Therefore, the MoSe_2 HDH, combining PTT with CT/PA imaging into one system, holds great potential for imaging-guided cancer theranostics. This work may provide an ingenious strategy to prepare other hetero-dimensional layered transition metal dichalcogenides.
来源 Nano Research ,2017,10(8):2667-2682 【核心库】
DOI 10.1007/s12274-017-1469-7
关键词 layered transition metal dichalcogenides ; molybdenum selenide ; hetero-dimensional hybrid ; hydrogen evolution reaction ; photothermal therapy
地址

1. School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Key Laboratory of Cluster Science, Ministry of Education of China;;Beijing Key Laboratory of Photoelectronic, Beijing, 100081  

2. Institute of High Energy Physics, Chinese Academy of Sciences, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Beijing, 100049  

3. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049

语种 英文
文献类型 研究性论文
ISSN 1998-0124
学科 物理学
基金 the 111 Project (No. B07012) ;  国家973计划 ;  This work was also financially supported by the Beijing Natural Science Foundation ;  国家自然科学基金
文献收藏号 CSCD:6013521

参考文献 共 49 共3页

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