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Functional graphene oxide nanosheets modified with cyclodextrins for removal of Bisphenol A from water

Chinese Journal of Chemical Engineering 2021年第11期34卷 79-87页

作者： Zhi-Hao Chen Zhuang Liu Lei Zhang Quan-Wei Cai Jia-Qi Hu Wei Wang Xiao-Jie Ju Rui Xie Liang-Yin Chu School of Chemical Engineering Sichuan UniversityChengdu 610065China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China

A novel type of functional graphene oxide nanosheets(GNs)modified with b-cyclodextrins(b-CDs)have been developed by coating dopamine-functionalized cyclodextrin(DACD)molecules on GNs for removing Bisphenol A(BPA)molecules from *** DACD molecules with both b-CD groups for achieving adsorption property and dopamine(DA)groups for achieving adhesion property are synthesized by grafting DA onto carboxymethyl-b-cyclodextrin(CmbCD).The proposed DACD molecules can be firmly coated on the surfaces of various inorganic and organic *** to the large specific surface area of GNs,DACD-coated GNs(DACD@GNs)are proposed for efficient adsorption separation of BPA molecules from *** to the host-gust complexation between the BPA molecules in water and b-CDs on DACD@GNs,the fabricated DACD@GNs exhibit excellent adsorption *** adsorption kinetics can be explained via the pseudo-second-order model *** experimental adsorption capacity of DACD@GNs is 11.29 mg·g^(-1) for ***,after the adsorption process,the DACD@GNs can be easily separated from aqueous solutions via vacuum filtration with porous membranes,and then regenerated by simply washing with *** proposed strategy in this study can be used for effectively functionalizing the surfaces of various substrates with functional b-CDs,which is highly promising in applications in the field of adsorption separations,especially water treatments.

关键词： Adsorption separation b-Cyclodextrin Bisphenol A graphene oxide nanosheets Dopamine

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Separation performance of graphene oxide as stationary phase for capillary gas chromatography

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Chinese Chemical Letters 2015年第1期26卷 47-49页

作者： Yu Feng Chuan-Gang Hu Mei-Ling Qi Ruo-Nong Fu Liang-Ti Qu Key Laboratory of Cluster Science Ministry of Education of ChinaBeijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of ChemistryBeijing Institute of Technology

graphene oxide（GO） has attracted extensive attention due to its unique properties and potential ***,we report the investigation of GO nanosheets as a stationary phase for capillary gas chromatographic（GC） *** GO column,fabricated by a new one-step coating approach,showed average McReynolds constants of 308,suggesting the medium polar nature of the GC stationary *** GO stationary phase achieves good separation for analytes of different types with good peak shapes,especially for H-bonding analytes,such as alcohols and *** different retention behaviors of GO stationary phase from the conventional stationary phase may originate from its multiple interactions with analytes,involving H-bonding,dipole-dipole,π-π stacking and dispersive ***,GO column showed good separation reproducibility with relative standard deviation（RSD%） less than 0.24%（n = 5） on retention times of analytes.

关键词： graphene oxide nanosheets Stationary phase Separation performance Capillary gas chromatography

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Fabrication of Nano Hollow graphene oxide Spheres via Water-in-oil Emulsion

Fabrication of Nano Hollow Graphene Oxide Spheres via Water-...

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2012 China Functional Materials Technology and Industry Forum

作者： Feng Li Dong-lin Zhao Li-zhong Bai Dong-dong Zhang State Key Laboratory of Chemical Resource Engineering Key Laboratory of Carbon Fiber and Functional PolymersMinistry of EducationBeijing University of Chemical Technology

Nano hollow graphene oxide spheres have been successfully fabricated from graphene oxide nanosheets utilizing a water-in-oil emulsion *** quality graphene oxide nanosheets were prepared from natural flake graphite by oxidation and ultrasonic *** oxide nanosheets were supported by the water-in-oil interface,and self-assembled around water droplets under the assistance of *** the removal of aqueous ammonia,the graphene oxide nanosheets stacked and condensed at the water-in-oil interface and finally formed a shell structure around the soft *** nano hollow graphene oxide spheres would be good candidates for catalyst supports,drug delivery and electrode materials in lithium-ion batteries.

关键词： graphene oxide nanosheets Nano hollow spheres Water-in-oil emulsion

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