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arXiv 1705.00523cond-mat.mtrl-sci
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氧化石墨烯吸附能力从更好到更高通过增强路线透视

Graphene oxide adsorptive power from better to more via an enhanced route in perspective

Sun Ling

摘要:

吸附是水净化的重要方法之一,炭是常用的高效吸附剂。不同形态和结构的碳通常表现出不同的吸附型净化能力。氧化石墨烯被认为是石墨烯的氧化衍生物,在保持其二维形貌特征结构的同时,在两侧上位置依赖地固定有大量的各种含氧功能基团。独立的氧化石墨烯倾向于在水中完全展开,并表现为类似大分子的布朗运动。因此,高性能吸附发生在与大量山梨酸酯相互作用的过程中,在此过程中,由于官能团与山梨酸酯相互作用机制的差异以及基团的固有位置规格,目标物质的有效吸附位点分布不均匀。因此,定向操纵表面活性剂的功能部分和它们的位置分布是潜在的一种方式,以进一步提高吸附性能,这可能会更好,如果考虑结合吸附和原位操作在同一时间。

英文摘要:

Adsorption is one important way applied to water decontamination, where carbon is commonly used as highly effective absorbent. Carbon of different morphologies and structures normally demonstrate distinct capabilities to adsorption-typed decontaminations. Graphene oxide is regarded as the oxidative derivative of graphene, maintaining its 2D morphology-featuring structure while location-dependently immobilized with a large amount of various oxygen-involving functional moieties on both sides. Free-standing graphene oxide tends to fully unfold in water and behave in macromolecular-like Brownian motion. Therefore, high-performance adsorption occurs during the process of interacting with large amount of sorbates, during which an unevenness of effective adsorptive site distribution turns out for targeted matter due to functional group-to-sorbate interaction mechanism differentiation as well as groups'inherent location specifications. Thus, oriented manipulation of surficial functional moieties and their site distribution is potentially a way to further enhance the adsorptive performances, and this could go even better if considering combining adsorption and an in-situ manipulation at the same time.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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