4.8 Article

Biomass-Derived Carbonaceous Materials with Graphene/Graphene-Like Structures: Definition, Classification, and Environmental Applications

期刊

ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 57, 期 45, 页码 17169-17177

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.est.3c04203

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Biomass-derived carbonaceousmaterials; graphene/graphene-likestructure; definitions; classification; environmental applications

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Biomass-derived carbonaceous materials with graphene/graphene-like structures (BGS) have great potential for environmental remediation. However, there is a need for critical assessment of their definitions, classifications, and specific structures. This perspective provides a systematic framework to define and classify BGS, evaluates the methods used for determining their structural properties, discusses their design and fabrication, and highlights their environmental applications and future research opportunities.
Biomass-derived carbonaceous materials with graphene/graphene-like structures (BGS) have attracted tremendous attention in the field of environmental remediation. The introduction of graphene/graphene-like structures into raw biochars can effectively improve their properties, such as electrical conductivity, surface functional groups, and catalytic activity. In 2021, the International Organization for Standardization defined graphene as a single layer of carbon atoms with each atom bound to three neighbours in a honeycomb structure. Considering this definition, several studies have incorrectly referred to BGS (e.g., biomass-derived few-layer graphene or porous graphene-like nanosheets) as graphene. The definitions and classifications of BGS and their applications in environmental remediation have not been assessed critically thus far. Comprehensive analysis and sufficient and robust evidence are highly desired to accurately determine the specific structures of BGS. In this perspective, we provide a systematic framework to define and classify the BGS. The state-of-the-art methods currently used to determine the structural properties of BGS are scrutinized. We then discuss the design and fabrication of BGS and how their distinctive features could improve the applicability of biomass-derived carbonaceous materials, particularly in environmental remediation. The environmental applications of these BGS are highlighted, and future research opportunities and needs are identified. The fundamental insights in this perspective provide critical guidance for the further development of BGS for a wide range of environmental applications.

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