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Near-UV light assisted green reduction of graphene oxide films through l-ascorbic acid

International Journal of Smart and Nano Materials 2021年第1期12卷 20-35页

作者： Jaime Regis Sebastian Vargas Andrea Irigoyen Elsa Bramasco-Rivera Jose L.Bañuelos Luis C.Delfin Anabel Renteria Ulises Martinez Tommy RockwardYirong Lin Department of Mechanical Engineering The University of Texas at El PasoEl PasoTX USA W.M.Keck Center for 3D Innovation the University of Texas at El PasoEl PasoTX USA Department of Physics The University of Texas at El PasoEl PasoTX USA Materials Physics and Applications Los Alamos National LaboratoryLos AlamosNM USA Department of Mechanical Engineering The University of Texas At El Paso 500 W.University Ave.El Paso TX 79968United States

Recent studies have highlighted the effects of various stimuli on the chemical reduction of graphene oxide(GO)through green reductant L-ascorbic acid(L-AA);however,the combination of near ultraviolet(NUV)light to increase the reduction rate has yet to be thoroughly *** this study,drop-casted GO films were subjected to chemical reduction through L-AA with various levels of exposure under 405 nm NUV *** structure and uniformity of GO stackings that form the film were characterized through scanning electron microscopy(SEM)and wide-angle x-ray scattering(WAXS).Additionally,WAXS was used to track the removal of oxygen-containing functional groups along with Fourier-transform infrared(FT-IR)spectroscopy and x-ray photoelectron spectroscopy(XPS)as a function of L-AA and NUV light exposure *** results demonstrated that the interaction between L-AA and NUV exposure has a significant effect on the reduction of ***,the results that yielded the highest reduction(C-C bond concentration of 60.7%)were the longest L-AA and NUV light exposure times(48 hours and 3 hours,respectively).This report provides a study on the effects of NUV on the green reduction of GO films through L-AA with potential application in solar energy and chemical sensing applications.

关键词： Graphene Oxide Films green reduction Near Ultraviolet Light L-Ascorbic Acid Wide-Angle X-Ray Scattering

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Facile synthesis of graphene via reduction of graphene oxide by artemisinin in ethanol

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Journal of Materiomics 2018年第3期4卷 256-265页

作者： Dandan Hou Qinfu Liu Xianshuai Wang Ying Quan Zhichuan Qiao Li Yu Shuli Ding School of Geoscience and Surveying Engineering China University of Mining&TechnologyBeijing 100083China Key Laboratory of Resource Survey and Research of Hebei Province Hebei University of EngineeringHandan 056038China

The preparation of reduced graphene oxide(RGO)by chemical reduction of graphene oxide(GO)usually involves highly toxic reducing agents which are harmful to the environment and human *** this paper,a mediated facile and relative green approach for the preparation of RGO in ethanol using artemisinin as a reducing agent is reported for the first *** morphology and de-oxidation efficiency of the obtained RGO were characterized by transmission electron microscope(TEM),atomic force microscope(AFM),and X-ray photoelectron spectroscopy(XPS).The results showed that artemisinin can effectively reduce GO into few-layered RGO with a high carbon to oxygen ratio(11.7).The mechanism for elimination of oxygen-containing functional groups decorated on GO nanosheets by artemisinin was *** important features of relatively environmentally friendly and facile operation procedures endow this approach with great promise in the mass production of RGO and various graphene-based materials,especially for biomaterials.

关键词： Nanostructures green reduction Graphene oxide Artemisinin

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