Shape-tunable vanadium selenide/reduced graphene oxide composites with excellent electromagnetic wave absorption performance

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL Carbon Pub Date : 2024-11-02 DOI:10.1016/j.carbon.2024.119795

Guansheng Ma , Yuhao Liu , Kaili Zhang , Guangyu Qin , Yuefeng Yan , Tao Zhang , Xiaoxiao Huang

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Abstract

The tunable energy gap and distinctive layered configuration of transition metal dichalcogenides (TMDs) has sparked considerable interest in their capabilities for electromagnetic wave absorption. As a significant TMD, vanadium selenide (VSe₂) is characterized by a superior electrical conductivity (1 × 10⁻³ S/m) and an expanded interlayer distance, which are advantageous for electromagnetic wave absorption performance. Nevertheless, the current research on VSe₂ in electromagnetic wave absorption is relatively limited. In this study, flower-like VSe₂ and shape-tunable VSe₂/reduced graphene oxide (rGO) composites were fabricated via a simple solvothermal method, and the effect of their morphology on electromagnetic wave absorption performances was investigated. The VSe₂/rGO composites exhibited remarkable electromagnetic wave absorption properties at a thickness of 2.01 mm, with a reflection loss value (RL) of up to −79.50 dB, and an effective absorption bandwidth (EAB) of 5.2 GHz (1.45 mm). This research has identified a novel approach to the study of TMDs in the field of electromagnetic wave absorption.

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具有优异电磁波吸收性能的形状可调硒化钒/还原氧化石墨烯复合材料

过渡金属二掺杂化合物（TMDs）的可调能隙和独特的层状构造引发了人们对其电磁波吸收能力的浓厚兴趣。作为一种重要的 TMD，硒化钒（VSe2）具有优异的导电性（1 × 10-3 S/m）和更宽的层间距，这对电磁波吸收性能非常有利。然而，目前关于 VSe2 在电磁波吸收方面的研究还相对有限。本研究通过简单的溶热法制备了花状 VSe2 和形状可调的 VSe2/还原氧化石墨烯（rGO）复合材料，并研究了其形态对电磁波吸收性能的影响。VSe2/rGO 复合材料在厚度为 2.01 mm 时具有显著的电磁波吸收特性，反射损耗值 (RL) 高达 -79.50 dB，有效吸收带宽 (EAB) 为 5.2 GHz (1.45 mm)。这项研究为在电磁波吸收领域研究 TMD 确定了一种新方法。

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来源期刊

Carbon 工程技术-材料科学：综合

CiteScore

20.80

自引率

7.30%

发文量

审稿时长

23 days

期刊介绍： The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.