A Facile Production of Reduced Graphene Oxide Transparent Films in Polyethylene Terephthalate Substrates

IF 0.8 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Nano Research Pub Date : 2022-03-21 DOI:10.4028/p-110q6p

N. Pereira, J. Carballo, Marcos Daniel Vozer Felisberto, G. Silva

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Abstract

Graphene oxide and reduced graphene oxide films have widespread applications in many fields. There are several methods for preparing thin films of these materials in different substrates, but a method that offers low cost and high quality in thin-film fabrication is still lacking. Here, we report a low cost and easily scalable methodology to produce reduced graphene oxide conductive films in polyethylene terephthalate (PET) substrates from graphene oxide suspensions. In an environmentally friendly approach, the reduction process was carried out in a green chemistry fashion way using ascorbic acid as reduction agent. Graphene oxide was synthesized by modified Hummers' method and the coating was realized in a homemade dip-coating process. Films with light transmittance as high as 99% and surface resistance in the order of MΩ/sq were obtained with graphene oxide contents as low as 0.5 wt%. The increase in graphene oxide contents produced films with surface resistance as low as 13 kΩ/sq. These are very interesting results that allows these films to be considered for application in electromagnetic shielding and electrostatic dissipation.

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聚对苯二甲酸乙二醇酯衬底上还原氧化石墨烯透明膜的简易制备

氧化石墨烯和还原氧化石墨烯薄膜在许多领域有着广泛的应用。在不同的衬底上制备这些材料的薄膜有几种方法，但在薄膜制造中仍然缺乏一种低成本和高质量的方法。在这里，我们报告了一种低成本和易于扩展的方法，可以用氧化石墨烯悬浮液在聚对苯二甲酸乙二醇酯(PET)衬底上生产还原氧化石墨烯导电薄膜。以抗坏血酸为还原剂，采用绿色化学方式进行了环境友好的还原过程。采用改进Hummers法合成氧化石墨烯，并采用自制浸涂工艺实现了氧化石墨烯的涂层。在氧化石墨烯含量低至0.5 wt%的情况下，获得了透光率高达99%、表面电阻为MΩ/sq的薄膜。氧化石墨烯含量的增加使薄膜的表面电阻低至13 kΩ/sq。这些非常有趣的结果使这些薄膜可以考虑在电磁屏蔽和静电耗散方面的应用。

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来源期刊

Journal of Nano Research 工程技术-材料科学：综合

CiteScore

2.40

自引率

5.90%

发文量

审稿时长

4 months

期刊介绍： "Journal of Nano Research" (JNanoR) is a multidisciplinary journal, which publishes high quality scientific and engineering papers on all aspects of research in the area of nanoscience and nanotechnologies and wide practical application of achieved results. "Journal of Nano Research" is one of the largest periodicals in the field of nanoscience and nanotechnologies. All papers are peer-reviewed and edited. Authors retain the right to publish an extended and significantly updated version in another periodical.