具备优异电磁波吸收性能和光催化析氢性能的木屑转化碳@MoS2复合材料的制备

doi:10.1016/j.actphy.2026.100366

摘要/Abstract

摘要： 开发具有优异电磁防护和光催化析氢性能的多功能材料，是解决电磁污染和清洁能源需求的关键策略。本研究通过KOH活化碳化策略制备了木屑衍生碳(WBDC)，随后通过水热法将其与MoS₂纳米片自组装构建WBDC@MoS₂ (WM-X) 复合材料。WBDC@MoS₂ (WM-X)复合材料实现了6.4 GHz的有效吸收带宽(EAB)、-61.92 dB的最小反射损耗(RL_min)以及37.17 dB m²的雷达散射截面(RCS)缩减值，这归因于其卓越的阻抗匹配和优异的介电损耗。此外，由于WBDC能提供丰富的电子传输通道以促进MoS₂光生载流子的分离，WBDC@MoS₂的光催化产氢速率可达5669.9 μmol g^-1 h^-1。综上所述，WBDC@MoS₂ (WM-X)复合材料的成功制备为开发兼具优异电磁波吸收和光催化析氢性能的多功能材料提供了新范式。

关键词: 木屑衍生碳, WBDC@MoS₂复合材料, 电磁波吸收, 光催化产氢

Abstract: The development of multifunctional materials with superb electromagnetic (EM) protection and photocatalytic hydrogen evolution behaviors is a critical tactic to address electromagnetic pollution and clean energy demand. In this study, wood chips-derived carbon (WBDC) was fabricated by a KOH-activated carbonization strategy, which was subsequently self-assembled with MoS₂ nanosheets via hydrothermal method to construct WBDC@MoS₂ (WM-X) composites. The effective absorption bandwidth (EAB) of 6.4 GHz, minimum reflection loss (RL_min) of -61.92 dB and radar scattering cross section (RCS) reduction value of 37.17 dB m₂ were all actualized for WBDC@MoS₂ (WM-X) composites, which were attributed to the corresponding marvelous impedance matching and superior dielectric loss. Furthermore, because WBDC could provide abundant electron transport channels to promote the separation of photogenerated carriers of MoS₂, the photocatalytic hydrogen production rate recorded for WBDC@MoS₂ could reach 5669.9 μmol g^-1 h^-1. To sum up, the successful fabrication of WBDC@MoS₂ (WM-X) composites provided a new paradigm for the development of multifunctional materials provided with eminent EM wave absorption and photocatalytic hydrogen evolution properties.

Key words: Wood chips-derived carbon, WBDC@MoS₂ composites, Electromagnetic (EM) wave absorption, Photocatalytic hydrogen evolution

赵嘉, 于跃麒, 顾哲, 张艳坤, 王大双. 具备优异电磁波吸收性能和光催化析氢性能的木屑转化碳@MoS₂复合材料的制备[J]. 物理化学学报 2026, (), 100366. doi: 10.1016/j.actphy.2026.100366

Jia Zhao, Yueqi Yu, Zhe Gu, Yankun Zhang, Dashuang Wang. Superior electromagnetic wave absorption of wood chips-derived carbon@MoS₂ composites with photocatalytic hydrogen evolution function[J]. Acta Phys. -Chim. Sin. 2026, (), 100366. doi: 10.1016/j.actphy.2026.100366

链接本文: https://www.whxb.pku.edu.cn/CN/10.1016/j.actphy.2026.100366

https://www.whxb.pku.edu.cn/CN/Y2026/V/I/100366

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具备优异电磁波吸收性能和光催化析氢性能的木屑转化碳@MoS₂复合材料的制备

Superior electromagnetic wave absorption of wood chips-derived carbon@MoS₂ composites with photocatalytic hydrogen evolution function

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