Hierarchical MoS2/Ti3C2Tx heterostructure with excellent photothermal conversion performance for solar-driven vapor generation

IF 10.8 2区化学 Q1 CHEMISTRY, PHYSICAL

物理化学学报 Pub Date : 2025-02-06 DOI:10.1016/j.actphy.2025.100053

Kun Rong , Cuilian Wen , Jiansen Wen , Xiong Li , Qiugang Liao , Siqing Yan , Chao Xu , Xiaoliang Zhang , Baisheng Sa , Zhimei Sun

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引用次数: 0

Abstract

Metallic 1T Molybdenum disulfide (1T-MoS₂) exhibits enhanced full spectral light absorption and prominent electrical conductivity, making it ideal for photothermal applications in conjunction with Ti₃C₂T_x MXene. Despite the challenges in increasing the 1T-MoS₂ proportion within MoS₂/Ti₃C₂T_x heterostructures and the incomplete understanding of the mechanisms governing their formation and properties, herein, a combined theoretical and experimental framework has been established, suggesting that the metallic characteristics of Ti₃C₂T_x and 1T-MoS₂ could significantly improve photothermal performance through strong interlayer interactions and efficient electron transport. The hierarchical MoS₂/Ti₃C₂T_x heterostructure has been fabricated through a one-step hydrothermal synthesis method with enhanced 1T-MoS₂ proportion, which achieves multilayered wrinkled architecture resulting from the in-situ growth of MoS₂ on Ti₃C₂T_x nanosheets. Notably, a remarkable peak photoheating temperature of 107 °C under an 808 nm laser with an intensity of 0.5 W·cm⁻² is realized, demonstrating its exceptional photothermal conversion capability. By incorporated into a polyvinylidene difluoride membrane, the MoS₂/Ti₃C₂T_x heterostructure functions as an efficient self-floating solar-driven steam generator, reaching an evaporation rate of 1.79 kg·m⁻²·h⁻¹ and an evaporation efficiency of 96.4% under one solar irradiance. This study proposes a versatile strategy for the MoS₂/Ti₃C₂T_x heterostructure, offering the potential for sustainable solar-driven vapor generation technologies.

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