“Green” Synthesis of Nanocarbons for Reduced Friction and Wear
In the following study, <i>green</i> carbon nanotubes and <i>green</i> few-layer reduced graphene oxide (rGO) were synthesized through simple, sustainable, and scalable processes starting from recycled plastic and charcoal, respectively, and with the highest number of steps i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/8/2/13 |
| _version_ | 1811262610059821056 |
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| author | Maria Sarno Adolfo Senatore Davide Scarpa Claudia Cirillo |
| author_facet | Maria Sarno Adolfo Senatore Davide Scarpa Claudia Cirillo |
| author_sort | Maria Sarno |
| collection | DOAJ |
| description | In the following study, <i>green</i> carbon nanotubes and <i>green</i> few-layer reduced graphene oxide (rGO) were synthesized through simple, sustainable, and scalable processes starting from recycled plastic and charcoal, respectively, and with the highest number of steps involving non-harmful substances. After an extensive physicochemical characterization, which evidenced that both nano-carbons exhibit structures comparable with that of materials produced through more traditional methods and from pure sources, the samples were dispersed in two types of conventional base oils, in particular group I and group III, in order to carry out, for the first time on these green nanomaterials, an accurate study on their tribological performance. Tribological tests evidenced a remarkable reduction of coefficient of friction and wear scar diameter, especially for the green rGO dispersed at 0.1 wt% in the group III oil along with SDBS-Tween 80 surfactants mixture: 18% and 15% at ambient temperature, 12% and 13% at 80 °C, respectively. Furthermore, the tribological performance of the synthesized samples in both oils remained high for 160 min of investigation. A comparison with the same material obtained with a traditional synthesis revealed the absence of fouling phenomena in the lubrication chambers in our case, confirming the higher tribological performances of the green rGO sample, probably, as a consequence of its less ordered nature. |
| first_indexed | 2024-04-12T19:29:50Z |
| format | Article |
| id | doaj.art-864c19cc5a0c42af89ef56f886fae207 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-04-12T19:29:50Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-864c19cc5a0c42af89ef56f886fae2072022-12-22T03:19:23ZengMDPI AGLubricants2075-44422020-02-01821310.3390/lubricants8020013lubricants8020013“Green” Synthesis of Nanocarbons for Reduced Friction and WearMaria Sarno0Adolfo Senatore1Davide Scarpa2Claudia Cirillo3Department of Physics “E.R. Caianiello”, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), ItalyNANO_MATES, Research Centre for Nanomaterials and Nanotechnology at the University of Salerno, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), ItalyDepartment of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), ItalyDepartment of Physics “E.R. Caianiello”, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), ItalyIn the following study, <i>green</i> carbon nanotubes and <i>green</i> few-layer reduced graphene oxide (rGO) were synthesized through simple, sustainable, and scalable processes starting from recycled plastic and charcoal, respectively, and with the highest number of steps involving non-harmful substances. After an extensive physicochemical characterization, which evidenced that both nano-carbons exhibit structures comparable with that of materials produced through more traditional methods and from pure sources, the samples were dispersed in two types of conventional base oils, in particular group I and group III, in order to carry out, for the first time on these green nanomaterials, an accurate study on their tribological performance. Tribological tests evidenced a remarkable reduction of coefficient of friction and wear scar diameter, especially for the green rGO dispersed at 0.1 wt% in the group III oil along with SDBS-Tween 80 surfactants mixture: 18% and 15% at ambient temperature, 12% and 13% at 80 °C, respectively. Furthermore, the tribological performance of the synthesized samples in both oils remained high for 160 min of investigation. A comparison with the same material obtained with a traditional synthesis revealed the absence of fouling phenomena in the lubrication chambers in our case, confirming the higher tribological performances of the green rGO sample, probably, as a consequence of its less ordered nature.https://www.mdpi.com/2075-4442/8/2/13green carbon nanotubes and rgoreduction of friction and wearsurfactants inducing stabilityabsence of fouling phenomena |
| spellingShingle | Maria Sarno Adolfo Senatore Davide Scarpa Claudia Cirillo “Green” Synthesis of Nanocarbons for Reduced Friction and Wear Lubricants green carbon nanotubes and rgo reduction of friction and wear surfactants inducing stability absence of fouling phenomena |
| title | “Green” Synthesis of Nanocarbons for Reduced Friction and Wear |
| title_full | “Green” Synthesis of Nanocarbons for Reduced Friction and Wear |
| title_fullStr | “Green” Synthesis of Nanocarbons for Reduced Friction and Wear |
| title_full_unstemmed | “Green” Synthesis of Nanocarbons for Reduced Friction and Wear |
| title_short | “Green” Synthesis of Nanocarbons for Reduced Friction and Wear |
| title_sort | green synthesis of nanocarbons for reduced friction and wear |
| topic | green carbon nanotubes and rgo reduction of friction and wear surfactants inducing stability absence of fouling phenomena |
| url | https://www.mdpi.com/2075-4442/8/2/13 |
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