Fengqin Shang , Yang Sun , Zihan Yan , Jiayu Yao , Ruirui Yang , Yingjia Hu , Bingheng Chen , Hangyan Shen
{"title":"微波快速合成掺氮洋葱状碳纳米球及其摩擦学行为研究","authors":"Fengqin Shang , Yang Sun , Zihan Yan , Jiayu Yao , Ruirui Yang , Yingjia Hu , Bingheng Chen , Hangyan Shen","doi":"10.1016/j.carbon.2024.119840","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, a simple and rapid method for the preparation of Nitrogen-doped carbon nanospheres (N–CNOs) was proposed. N–CNOs were successfully prepared by microwave heating the mixture of naphthalene, melamine, and carbon fibers for 2 min, which showed a nearly spherical morphology with a multi-layer onion-like structure, and the average diameter was 197 nm. Compared with CNOs, the coefficient of friction (COF) of N–CNOs decreased from 0.36 to 0.31 and the wear rate decreased from 1.03 × 10<sup>−5</sup> to 0.83 × 10<sup>−5</sup> mm³/(N·m), which decreased by 14 % and 19 %, respectively. When the N–CNOs concentration increased from 4.0 wt% to 16.0 wt%, the COF and wear rate of N–CNOs reached the minimum (0.22 and 0.53 × 10<sup>−5</sup> mm<sup>3</sup>/(N·m)), respectively. The excellent tribological properties of N–CNOs were attributed to the increase of interlayer spacing (0.07 nm) and the atomic scale lattice mismatch, both of which weakened interlayer interactions, thereby improving lubrication performance and reducing friction. This study not only proposed a new preparation method for N–CNOs, but also revealed the lubrication mechanism at the atomic scale, providing a technical support for their application in the field of lubrication.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"233 ","pages":"Article 119840"},"PeriodicalIF":10.5000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Rapid synthesis of onion-like nitrogen-doped carbon nanospheres with microwave and study of its tribological behavior\",\"authors\":\"Fengqin Shang , Yang Sun , Zihan Yan , Jiayu Yao , Ruirui Yang , Yingjia Hu , Bingheng Chen , Hangyan Shen\",\"doi\":\"10.1016/j.carbon.2024.119840\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this study, a simple and rapid method for the preparation of Nitrogen-doped carbon nanospheres (N–CNOs) was proposed. N–CNOs were successfully prepared by microwave heating the mixture of naphthalene, melamine, and carbon fibers for 2 min, which showed a nearly spherical morphology with a multi-layer onion-like structure, and the average diameter was 197 nm. Compared with CNOs, the coefficient of friction (COF) of N–CNOs decreased from 0.36 to 0.31 and the wear rate decreased from 1.03 × 10<sup>−5</sup> to 0.83 × 10<sup>−5</sup> mm³/(N·m), which decreased by 14 % and 19 %, respectively. When the N–CNOs concentration increased from 4.0 wt% to 16.0 wt%, the COF and wear rate of N–CNOs reached the minimum (0.22 and 0.53 × 10<sup>−5</sup> mm<sup>3</sup>/(N·m)), respectively. The excellent tribological properties of N–CNOs were attributed to the increase of interlayer spacing (0.07 nm) and the atomic scale lattice mismatch, both of which weakened interlayer interactions, thereby improving lubrication performance and reducing friction. This study not only proposed a new preparation method for N–CNOs, but also revealed the lubrication mechanism at the atomic scale, providing a technical support for their application in the field of lubrication.</div></div>\",\"PeriodicalId\":262,\"journal\":{\"name\":\"Carbon\",\"volume\":\"233 \",\"pages\":\"Article 119840\"},\"PeriodicalIF\":10.5000,\"publicationDate\":\"2024-11-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Carbon\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0008622324010595\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0008622324010595","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Rapid synthesis of onion-like nitrogen-doped carbon nanospheres with microwave and study of its tribological behavior
In this study, a simple and rapid method for the preparation of Nitrogen-doped carbon nanospheres (N–CNOs) was proposed. N–CNOs were successfully prepared by microwave heating the mixture of naphthalene, melamine, and carbon fibers for 2 min, which showed a nearly spherical morphology with a multi-layer onion-like structure, and the average diameter was 197 nm. Compared with CNOs, the coefficient of friction (COF) of N–CNOs decreased from 0.36 to 0.31 and the wear rate decreased from 1.03 × 10−5 to 0.83 × 10−5 mm³/(N·m), which decreased by 14 % and 19 %, respectively. When the N–CNOs concentration increased from 4.0 wt% to 16.0 wt%, the COF and wear rate of N–CNOs reached the minimum (0.22 and 0.53 × 10−5 mm3/(N·m)), respectively. The excellent tribological properties of N–CNOs were attributed to the increase of interlayer spacing (0.07 nm) and the atomic scale lattice mismatch, both of which weakened interlayer interactions, thereby improving lubrication performance and reducing friction. This study not only proposed a new preparation method for N–CNOs, but also revealed the lubrication mechanism at the atomic scale, providing a technical support for their application in the field of lubrication.
期刊介绍:
The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.