Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices
Tremendous applications of carbon-based nanomaterials need the individualization of particles in the liquid phase, preferably in an aqueous solution. Currently, one of the main challenges is how to obtain highly monodispersed and high-quality colloidal solutions and make it usable in electronic devi...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Chemical Engineering Journal Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666821122001739 |
| _version_ | 1797987347105579008 |
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| author | Xuezhu Xu |
| author_facet | Xuezhu Xu |
| author_sort | Xuezhu Xu |
| collection | DOAJ |
| description | Tremendous applications of carbon-based nanomaterials need the individualization of particles in the liquid phase, preferably in an aqueous solution. Currently, one of the main challenges is how to obtain highly monodispersed and high-quality colloidal solutions and make it usable in electronic devices without performing badly. In this study, carbon nanoparticles (i.e., fullerenes, carbon nanotubes, graphene) were individualized and stabilized well in an aqueous solution by using a novel cutting-edge dispersion technique using sodium hypochlorite (NaClO) and sodium bromide (NaBr) assisted by brief low-power sonication treatment. This new method improves colloidal properties, provides a means by which carboxylate groups are introduced to the surface of the carbon nanoparticles that facilitates the formation of Na-carbon salts when the particles are exposed to the NaClO and NaBr mixed-salt solution. As a metal-salt complex, the Na-carbon is then readily susceptible to dispersion within a polar medium. Vacuum-filtration prepared salted carbon nanotube film, graphene and C60 have high electrical conductivity, and the representative carbon nanotube has a value up to 1.72 × 104 S/m, comparable to that dispersed by other traditional dispersants. Because of its nontoxicity and facile water-based solution features, we expect this dispersion and casting technique would pave its way into more device areas, etc. |
| first_indexed | 2024-04-11T07:47:12Z |
| format | Article |
| id | doaj.art-70de4d880e4540e4934bbb2fa208fc74 |
| institution | Directory Open Access Journal |
| issn | 2666-8211 |
| language | English |
| last_indexed | 2024-04-11T07:47:12Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Engineering Journal Advances |
| spelling | doaj.art-70de4d880e4540e4934bbb2fa208fc742022-12-22T04:36:15ZengElsevierChemical Engineering Journal Advances2666-82112022-11-0112100413Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devicesXuezhu Xu0Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Normal University, Guangzhou 510006, China; South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China; National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China; Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; Corresponding author at: South China Normal University Guangzhou Higher Education Mega Center, China.Tremendous applications of carbon-based nanomaterials need the individualization of particles in the liquid phase, preferably in an aqueous solution. Currently, one of the main challenges is how to obtain highly monodispersed and high-quality colloidal solutions and make it usable in electronic devices without performing badly. In this study, carbon nanoparticles (i.e., fullerenes, carbon nanotubes, graphene) were individualized and stabilized well in an aqueous solution by using a novel cutting-edge dispersion technique using sodium hypochlorite (NaClO) and sodium bromide (NaBr) assisted by brief low-power sonication treatment. This new method improves colloidal properties, provides a means by which carboxylate groups are introduced to the surface of the carbon nanoparticles that facilitates the formation of Na-carbon salts when the particles are exposed to the NaClO and NaBr mixed-salt solution. As a metal-salt complex, the Na-carbon is then readily susceptible to dispersion within a polar medium. Vacuum-filtration prepared salted carbon nanotube film, graphene and C60 have high electrical conductivity, and the representative carbon nanotube has a value up to 1.72 × 104 S/m, comparable to that dispersed by other traditional dispersants. Because of its nontoxicity and facile water-based solution features, we expect this dispersion and casting technique would pave its way into more device areas, etc.http://www.sciencedirect.com/science/article/pii/S2666821122001739Carbon nanoparticlesAggregationDispersionSodium hypochloriteSodium bromide |
| spellingShingle | Xuezhu Xu Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices Chemical Engineering Journal Advances Carbon nanoparticles Aggregation Dispersion Sodium hypochlorite Sodium bromide |
| title | Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices |
| title_full | Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices |
| title_fullStr | Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices |
| title_full_unstemmed | Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices |
| title_short | Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices |
| title_sort | quick and surfactant free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices |
| topic | Carbon nanoparticles Aggregation Dispersion Sodium hypochlorite Sodium bromide |
| url | http://www.sciencedirect.com/science/article/pii/S2666821122001739 |
| work_keys_str_mv | AT xuezhuxu quickandsurfactantfreedispersionofvariouscarbonnanoparticlesinaqueoussolutionascastingtechniquefordevices |