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Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil

The use of nano-additives is widely recognized as a cheap and effective pathway to improve the performance of lubrication by minimizing the energy loss from friction and wear, especially in diesel engines. In this work, a simple and scalable protocol was proposed to fabricate a graphene additive to...

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Autores principales: La, Duong Duc, Truong, Tuan Ngoc, Pham, Thuan Q., Vo, Hoang Tung, Tran, Nam The, Nguyen, Tuan Anh, Nadda, Ashok Kumar, Nguyen, Thanh Tung, Chang, S. Woong, Chung, W. Jin, Nguyen, D. Duc
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7279219/
https://www.ncbi.nlm.nih.gov/pubmed/32370058
http://dx.doi.org/10.3390/nano10050877
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author La, Duong Duc
Truong, Tuan Ngoc
Pham, Thuan Q.
Vo, Hoang Tung
Tran, Nam The
Nguyen, Tuan Anh
Nadda, Ashok Kumar
Nguyen, Thanh Tung
Chang, S. Woong
Chung, W. Jin
Nguyen, D. Duc
author_facet La, Duong Duc
Truong, Tuan Ngoc
Pham, Thuan Q.
Vo, Hoang Tung
Tran, Nam The
Nguyen, Tuan Anh
Nadda, Ashok Kumar
Nguyen, Thanh Tung
Chang, S. Woong
Chung, W. Jin
Nguyen, D. Duc
author_sort La, Duong Duc
collection PubMed
description The use of nano-additives is widely recognized as a cheap and effective pathway to improve the performance of lubrication by minimizing the energy loss from friction and wear, especially in diesel engines. In this work, a simple and scalable protocol was proposed to fabricate a graphene additive to improve the engine lubricant oil. Graphene nanoplates (GNPs) were obtained by a one-step chemical exfoliation of natural graphite and were successfully modified with a surfactant and an organic compound to obtain a modified GNP additive, that can be facilely dispersed in lubricant oil. The GNPs and modified GNP additive were characterized using scanning electron microscopy, X-ray diffraction, atomic force microscopy, Raman spectroscopy, and Fourier-transform infrared spectroscopy. The prepared GNPs had wrinkled and crumpled structures with a diameter of 10–30 µm and a thickness of less than 15 nm. After modification, the GNP surfaces were uniformly covered with the organic compound. The addition of the modified GNP additive to the engine lubricant oil significantly enhanced the friction and antiwear performance. The highest reduction of 35% was determined for the wear scar diameter with a GNP additive concentration of approximately 0.05%. The mechanism for lubrication enhancement by graphene additives was also briefly discussed.
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spelling pubmed-72792192020-06-15 Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil La, Duong Duc Truong, Tuan Ngoc Pham, Thuan Q. Vo, Hoang Tung Tran, Nam The Nguyen, Tuan Anh Nadda, Ashok Kumar Nguyen, Thanh Tung Chang, S. Woong Chung, W. Jin Nguyen, D. Duc Nanomaterials (Basel) Article The use of nano-additives is widely recognized as a cheap and effective pathway to improve the performance of lubrication by minimizing the energy loss from friction and wear, especially in diesel engines. In this work, a simple and scalable protocol was proposed to fabricate a graphene additive to improve the engine lubricant oil. Graphene nanoplates (GNPs) were obtained by a one-step chemical exfoliation of natural graphite and were successfully modified with a surfactant and an organic compound to obtain a modified GNP additive, that can be facilely dispersed in lubricant oil. The GNPs and modified GNP additive were characterized using scanning electron microscopy, X-ray diffraction, atomic force microscopy, Raman spectroscopy, and Fourier-transform infrared spectroscopy. The prepared GNPs had wrinkled and crumpled structures with a diameter of 10–30 µm and a thickness of less than 15 nm. After modification, the GNP surfaces were uniformly covered with the organic compound. The addition of the modified GNP additive to the engine lubricant oil significantly enhanced the friction and antiwear performance. The highest reduction of 35% was determined for the wear scar diameter with a GNP additive concentration of approximately 0.05%. The mechanism for lubrication enhancement by graphene additives was also briefly discussed. MDPI 2020-05-01 /pmc/articles/PMC7279219/ /pubmed/32370058 http://dx.doi.org/10.3390/nano10050877 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
La, Duong Duc
Truong, Tuan Ngoc
Pham, Thuan Q.
Vo, Hoang Tung
Tran, Nam The
Nguyen, Tuan Anh
Nadda, Ashok Kumar
Nguyen, Thanh Tung
Chang, S. Woong
Chung, W. Jin
Nguyen, D. Duc
Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil
title Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil
title_full Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil
title_fullStr Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil
title_full_unstemmed Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil
title_short Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil
title_sort scalable fabrication of modified graphene nanoplatelets as an effective additive for engine lubricant oil
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7279219/
https://www.ncbi.nlm.nih.gov/pubmed/32370058
http://dx.doi.org/10.3390/nano10050877
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