Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field
The key step of the control reaction for the preparation of graphene oxide (GO) by chemical oxidation of KMnO4/ concentrated H2SO4 oxidation system is the intercalation mass transfer process of oxidizer in graphite. Ultrasonic field can promote the intercalation mass transfer process, but the mass t...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535223001260 |
| _version_ | 1797857662040276992 |
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| author | Xiaodong Chen Zhan Qu Xinghua Du Guoyu Ren Yanli Gao Yonglin Yang Rongsheng Gao |
| author_facet | Xiaodong Chen Zhan Qu Xinghua Du Guoyu Ren Yanli Gao Yonglin Yang Rongsheng Gao |
| author_sort | Xiaodong Chen |
| collection | DOAJ |
| description | The key step of the control reaction for the preparation of graphene oxide (GO) by chemical oxidation of KMnO4/ concentrated H2SO4 oxidation system is the intercalation mass transfer process of oxidizer in graphite. Ultrasonic field can promote the intercalation mass transfer process, but the mass transfer kinetics remains unclear. In this paper, the kinetic model of mass transfer coefficient of graphene oxide sheet intercalated by Mn2O7 oxidizer in ultrasonic field was established. The Mn2O7 intercalation process after the intervention of the ultrasonic was simulated by COMSOL Multiphysics 5.5 simulation software. The results show that the ultrasonic field makes the Mn2O7 solution inside and outside the graphite layer turbulent, and the ultrasonic intervening time has little influence on the concentration distribution and diffusion rate of the solution outside the graphite layer, while it has great influence on the concentration distribution and little influence on the diffusion rate change inside the graphite layer. These results contribute to the improvement of the mass transfer theory for the preparation of GO by ultrasonic assisted chemical oxidation. |
| first_indexed | 2024-04-09T21:00:23Z |
| format | Article |
| id | doaj.art-0ad6de44e7964e3fa9fa5fde8e8738cb |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-09T21:00:23Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-0ad6de44e7964e3fa9fa5fde8e8738cb2023-03-29T09:25:43ZengElsevierArabian Journal of Chemistry1878-53522023-05-01165104664Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic fieldXiaodong Chen0Zhan Qu1Xinghua Du2Guoyu Ren3Yanli Gao4Yonglin Yang5Rongsheng Gao6School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi, PR China; Shaanxi Key Laboratory of Clean Utilization of Low-metamorphic Coal, Yulin,719000, Shaanxi, PR China; Corresponding author.School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi, PR ChinaSchool of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi, PR ChinaSchool of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi, PR China; Shaanxi Key Laboratory of Clean Utilization of Low-metamorphic Coal, Yulin,719000, Shaanxi, PR ChinaSchool of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi, PR China; Shaanxi Key Laboratory of Clean Utilization of Low-metamorphic Coal, Yulin,719000, Shaanxi, PR ChinaSchool of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi, PR China; Shaanxi Key Laboratory of Clean Utilization of Low-metamorphic Coal, Yulin,719000, Shaanxi, PR ChinaShaanxi Yanchang Petroleum Fracturing Material Co., LTD, Weinan, Shaanxi 715500, PR ChinaThe key step of the control reaction for the preparation of graphene oxide (GO) by chemical oxidation of KMnO4/ concentrated H2SO4 oxidation system is the intercalation mass transfer process of oxidizer in graphite. Ultrasonic field can promote the intercalation mass transfer process, but the mass transfer kinetics remains unclear. In this paper, the kinetic model of mass transfer coefficient of graphene oxide sheet intercalated by Mn2O7 oxidizer in ultrasonic field was established. The Mn2O7 intercalation process after the intervention of the ultrasonic was simulated by COMSOL Multiphysics 5.5 simulation software. The results show that the ultrasonic field makes the Mn2O7 solution inside and outside the graphite layer turbulent, and the ultrasonic intervening time has little influence on the concentration distribution and diffusion rate of the solution outside the graphite layer, while it has great influence on the concentration distribution and little influence on the diffusion rate change inside the graphite layer. These results contribute to the improvement of the mass transfer theory for the preparation of GO by ultrasonic assisted chemical oxidation.http://www.sciencedirect.com/science/article/pii/S1878535223001260Graphene oxideIntercalation oxidationUltrasonic fieldMass transfer modelingNumerical simulation |
| spellingShingle | Xiaodong Chen Zhan Qu Xinghua Du Guoyu Ren Yanli Gao Yonglin Yang Rongsheng Gao Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field Arabian Journal of Chemistry Graphene oxide Intercalation oxidation Ultrasonic field Mass transfer modeling Numerical simulation |
| title | Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field |
| title_full | Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field |
| title_fullStr | Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field |
| title_full_unstemmed | Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field |
| title_short | Mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field |
| title_sort | mass transfer kinetics of graphene oxide prepared by chemical oxidation intercalationg assisted ultrasonic field |
| topic | Graphene oxide Intercalation oxidation Ultrasonic field Mass transfer modeling Numerical simulation |
| url | http://www.sciencedirect.com/science/article/pii/S1878535223001260 |
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