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复合涂层中还原氧化石墨烯的取向

Orientation of reduced graphene oxide in composite coatings.

作者信息

Thorshaug Knut, Didriksen Terje, Jensen Ingvild Thue, Almeida Carvalho Patricia, Yang Juan, Grandcolas Mathieu, Ferber Alain, Booth Andy M, Ağaç Özlem, Alagöz Hüseyin, Erdoğan Nursev, Kuban Anıl, Belle Branson D

机构信息

SINTEF Industri Forskningsveien 1 NO-0373 Oslo Norway

SINTEF Digital Forskningsveien 1 NO-0373 Oslo Norway.

出版信息

Nanoscale Adv. 2024 Mar 11;6(8):2088-2095. doi: 10.1039/d3na01057k. eCollection 2024 Apr 16.

DOI:10.1039/d3na01057k
PMID:38633045
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11019492/
Abstract

Composite coatings containing reduced graphene oxide (rGO) and 3-(aminopropyl)triethoxysilane functionalised rGO (APTES-rGO) were prepared by sol-gel technology and deposited on Al 2024 T-3. Covalent functionalisation of GO by APTES occurred by formation of amide bonds, accompanied by GO reduction. The thin sheets were retained. The hydrophilicity of the coating increased when APTES-rGO was added. The opposite was observed when GO was added. A key finding is that the rGO flakes agglomerate and lie in a random orientation in the coating, whereas the APTES-rGO flakes are more evenly distributed in the matrix and appear to lie along the plane of the substrate.

摘要

采用溶胶-凝胶技术制备了含有还原氧化石墨烯（rGO）和3-(氨丙基)三乙氧基硅烷功能化rGO（APTES-rGO）的复合涂层，并将其沉积在Al 2024 T-3上。APTES对氧化石墨烯进行共价功能化是通过形成酰胺键实现的，同时伴随着氧化石墨烯的还原。薄片得以保留。添加APTES-rGO时涂层的亲水性增加。添加氧化石墨烯时则观察到相反的情况。一个关键发现是，rGO薄片在涂层中团聚并呈随机取向，而APTES-rGO薄片在基体中分布更均匀，并且似乎沿基材平面排列。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/89a7474a0cae/d3na01057k-f11.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/89a7474a0cae/d3na01057k-f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/75e26f6e950b/d3na01057k-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/29727f69e802/d3na01057k-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/a870c8a0b35a/d3na01057k-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/aaa6f079cd70/d3na01057k-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/41acc7053943/d3na01057k-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/1776ad4bb163/d3na01057k-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/a7fc098a459e/d3na01057k-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/60cab21e6fff/d3na01057k-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/bc7702a132fc/d3na01057k-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/a67fdab8b429/d3na01057k-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ed1/11019492/89a7474a0cae/d3na01057k-f11.jpg

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