Comparative study of transport properties of membranes based on graphene oxide prepared by Brodie and improved Hummers' methods

IF 0.8 Q4 NANOSCIENCE & NANOTECHNOLOGY Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2023-04-29 DOI:10.17586/2220-8054-2023-14-2-272-278
E. Chernova, K. E. Gurianov, V. Brotsman, R. Valeev, O. Kapitanova, M. V. Berekchiian, A. Lukashin
{"title":"Comparative study of transport properties of membranes based on graphene oxide prepared by Brodie and improved Hummers' methods","authors":"E. Chernova, K. E. Gurianov, V. Brotsman, R. Valeev, O. Kapitanova, M. V. Berekchiian, A. Lukashin","doi":"10.17586/2220-8054-2023-14-2-272-278","DOIUrl":null,"url":null,"abstract":"A BSTRACT A comparative study of transport characteristics of composite membranes based on graphene oxide prepared by Hummers’ (H-GO) and Brodie (B-GO) methods is presented. By using Raman and XPS spectroscopy combined with gas and vapor measurements at non-zero pressure drop, it is shown that the difference in preparation methods results not only in different composition and microstructure of the membranes, but also in different water vapor permeability and resistance towards pressure drops during membrane performance. The H-GO samples are found to be more defective and stronger oxidized with C/O ratio of 1.8, whereas B-GO revealed a total C/O ratio of 2.6 with more perfect microstructure. The higher oxidation degree of H-GO membranes allows one to achieve higher water vapor permeability (up to ∼ 170 Barrer at 100 % humidity) but dramatically lower stability towards pressure revealing the irreversible loss in permeability up to 46 % during the application of pressure drop of 1 bar. In contrast, B-GO membranes show slightly lower permeability ( ∼ 140 Barrer at 100 % humidity) but enhanced pressure stability revealing the irreversible permeability loss of only 4 % at pressure drop of 1 bar which is about 10-fold smaller compared to H-GO stability. This could be explained by the difference in microstructural features of the H-GO and B-GO. Graphene oxide prepared by Hummer’s method has more flexible and defective nanosheets, whereas Brodie’s method gives rise to more rigid nanosheets with more perfect microstructure. The obtained results suggest that it is possible to prepare graphene oxide membranes with high resistance towards pressure using only the composition-microstructure interplay without additional modification with pressure-stabilizing agents.","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"72 1","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanosystems: Physics, Chemistry, Mathematics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.17586/2220-8054-2023-14-2-272-278","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"NANOSCIENCE & NANOTECHNOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

A BSTRACT A comparative study of transport characteristics of composite membranes based on graphene oxide prepared by Hummers’ (H-GO) and Brodie (B-GO) methods is presented. By using Raman and XPS spectroscopy combined with gas and vapor measurements at non-zero pressure drop, it is shown that the difference in preparation methods results not only in different composition and microstructure of the membranes, but also in different water vapor permeability and resistance towards pressure drops during membrane performance. The H-GO samples are found to be more defective and stronger oxidized with C/O ratio of 1.8, whereas B-GO revealed a total C/O ratio of 2.6 with more perfect microstructure. The higher oxidation degree of H-GO membranes allows one to achieve higher water vapor permeability (up to ∼ 170 Barrer at 100 % humidity) but dramatically lower stability towards pressure revealing the irreversible loss in permeability up to 46 % during the application of pressure drop of 1 bar. In contrast, B-GO membranes show slightly lower permeability ( ∼ 140 Barrer at 100 % humidity) but enhanced pressure stability revealing the irreversible permeability loss of only 4 % at pressure drop of 1 bar which is about 10-fold smaller compared to H-GO stability. This could be explained by the difference in microstructural features of the H-GO and B-GO. Graphene oxide prepared by Hummer’s method has more flexible and defective nanosheets, whereas Brodie’s method gives rise to more rigid nanosheets with more perfect microstructure. The obtained results suggest that it is possible to prepare graphene oxide membranes with high resistance towards pressure using only the composition-microstructure interplay without additional modification with pressure-stabilizing agents.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Brodie法和改进Hummers法制备氧化石墨烯膜输运性能的比较研究
摘要对Hummers (H-GO)和Brodie (B-GO)制备的氧化石墨烯复合膜的输运特性进行了比较研究。通过拉曼光谱和XPS光谱结合非零压降下的气体和蒸汽测量,表明制备方法的不同不仅导致膜的组成和微观结构的不同,而且导致膜的透气性和抗压降性能的不同。H-GO样品缺陷更大,氧化性更强,C/O比为1.8,而B-GO样品的总C/O比为2.6,微观结构更完美。高氧化程度的H-GO膜允许人们获得更高的水蒸气渗透性(在100%湿度下高达~ 170 Barrer),但对压力的稳定性显着降低,显示在应用1 bar压降期间渗透性的不可逆损失高达46%。相比之下,B-GO膜的渗透性略低(在100%湿度下约为140 Barrer),但压力稳定性增强,在压降为1 bar时,不可逆的渗透性损失仅为4%,比H-GO稳定性小约10倍。这可以用H-GO和B-GO的微观结构特征的差异来解释。用Hummer的方法制备的氧化石墨烯具有更柔韧和缺陷的纳米片,而Brodie的方法制备的纳米片具有更完美的微观结构。所得结果表明,仅使用成分-微观结构的相互作用,无需额外的稳压剂修饰,就可以制备出具有高耐压性的氧化石墨烯膜。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Nanosystems: Physics, Chemistry, Mathematics
Nanosystems: Physics, Chemistry, Mathematics NANOSCIENCE & NANOTECHNOLOGY-
CiteScore
1.80
自引率
11.10%
发文量
64
期刊最新文献
Molecular dynamics simulation of the rearrangement of polyampholyte conformations on the surface of a charged oblate metal nanospheroid in a microwave electric field Toward nanomagnetic implementation of energy-based machine learning Effect of triethanolamine and sodium hydroxide concentration on the activity of Pt/g-C3N4 catalyst in the reaction of photocatalytic hydrogen evolution under visible light irradiation Alumina and silica supported Ce-Fe-O systems obtained by the solution combustion method and their performance in CO2 hydrogenation to syngas Study of the electrical and electronic properties of crystalline molybdenum disulfide (MoS2-3R) semiconductor nano using alternating current (AC) measurements
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1