期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 6, 期 32, 页码 8679-8687出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc02900h
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Hierarchically structured cellulose aerogels with interconnected Mxene (Ti3C2Tx) networks are prepared via freeze-casting and chemical cross-linking processes. The individual MXene nanosheets are effectively combined together with cellulose to form a conductive network by covalent cross-linking and hydrogen-bond interaction. This unique structure of aerogel composites presents a low density (0.31 g cm(-3)) with excellent microwave absorption performance. The typical aerogel with its paraffin exhibits the minimum reflection loss (RL) of -43.4 dB at 11.2 GHz with a thickness of 2 mm and an effective absorption bandwidth of 4.5 GHz as a result of multiple reflection effects, conductive loss and polarization relaxation. These lightweight Ti3C2Tx MXene/cellulose aerogel composites are potential materials for high-performance microwave absorption applications in aeronautics.
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