Perfect Broadband Sound Absorption on a Graphene-Decorated Porous System with Dual-3D Structures

Perfect Broadband Sound Absorption on a Graphene-Decorated Porous System with Dual-3D Structures

Noise is a threat to human life quality and an invisible killer that causes many chronic diseases. The vast majority of porous sound absorbers are single-phased, which limits their sound absorption potential. Herein, a graphene-decorated porous system (GDPS) prepared using the immersion-hydrothermal...

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Veröffentlicht in:ACS applied materials & interfaces 2022-06, Vol.14 (24), p.28145-28153
Hauptverfasser: Yu, Silin, Ni, Jingnan, Zhou, Zhiling, Xu, Shijie, Li, Dongting, Li, Yong, Qiu, Jun
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Functional Nanostructured Materials (including low-D carbon)
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container_end_page 28153
container_issue 24
container_start_page 28145
container_title ACS applied materials & interfaces
container_volume 14
creator Yu, Silin
Ni, Jingnan
Zhou, Zhiling
Xu, Shijie
Li, Dongting
Li, Yong
Qiu, Jun
description Noise is a threat to human life quality and an invisible killer that causes many chronic diseases. The vast majority of porous sound absorbers are single-phased, which limits their sound absorption potential. Herein, a graphene-decorated porous system (GDPS) prepared using the immersion-hydrothermal-freezing self-assembly method is reported as an efficient sound absorber based on its unique consecutive double three-dimensional (dual-3D) structure. Due to the increased tortuosity and other gain effects, the novel structure can achieve the perfect broadband absorption at a wide bandwidth in which the sound absorption coefficient exceeds 0.9 easily. Within the effective thicknesses, the widest perfect absorption bandwidth of 814–6400 Hz is realized. Moreover, a higher graphene concentration and the addition of a polymer are found to be able to decrease the absorption frequency to the lowest values of 1979 and 1544 Hz, respectively. The design of a unique dual-3D structure opens up new strategies and applications to use graphene aerogels in noise and vibration applications.
doi_str_mv 10.1021/acsami.2c01599
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subjects Functional Nanostructured Materials (including low-D carbon)
title Perfect Broadband Sound Absorption on a Graphene-Decorated Porous System with Dual-3D Structures
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