Matches in SemOpenAlex for { <https://semopenalex.org/work/W2014133726> ?p ?o ?g. }
- W2014133726 abstract "The determination of an atomistic graphene oxide (GO) model has been challenging due to the structural dependence on different synthesis methods. In this work we combine temperature-programmed molecular dynamics simulation techniques and the ReaxFF reactive force field to generate realistic atomistic GO structures. By grafting a mixture of epoxy and hydroxyl groups to the basal graphene surface and fine-tuning their initial concentrations, we produce in a controllable manner the GO structures with different functional groups and defects. The models agree with structural experimental data and with other ab initio quantum calculations. Using the generated atomistic models, we perform reactive adsorption calculations for H2S and H2O/H2S mixtures on GO materials and compare the results with experiment. We find that H2S molecules dissociate on the carbonyl functional groups, and H2O, CO2, and CO molecules are released as reaction products from the GO surface. The calculation reveals that for the H2O/H2S mixtures, H2O molecules are preferentially adsorbed to the carbonyl sites and block the potential active sites for H2S decomposition. The calculation agrees well with the experiments. The methodology and the procedure applied in this work open a new door to the theoretical studies of GO and can be extended to the research on other amorphous materials." @default.
- W2014133726 created "2016-06-24" @default.
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- W2014133726 date "2013-11-21" @default.
- W2014133726 modified "2023-10-12" @default.
- W2014133726 title "Controllable atomistic graphene oxide model and its application in hydrogen sulfide removal" @default.
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- W2014133726 doi "https://doi.org/10.1063/1.4832039" @default.
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