氧化石墨烯_化工百科

中文名	氧化石墨烯
英文名	Graphene oxide
别名	氧化石墨烯
英文别名	graphene oxide Graphene oxide
密度	0.981 g/mL at 25 °C
折射率	n20/D 1.333
存储条件	2-8°C
外观	粉末或薄片
WGK Germany	3
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氧化石墨烯 - 介绍

1、氧化石墨烯(graphene oxide )简称GO，是石墨烯的氧化物，其颜色为棕黄色，市面上常见的产品有粉末状、片状以及溶液状的；2、氧化石墨烯含有丰富的含氧官能团，可溶于水、NMP、DMF、乙二醇等溶剂；3、氧化石墨烯具有纯度高、分散性好等特点，可广泛应用于催化材料领域，作为负载纳米金属、氧化物等的催化剂载体，也可用在环保材料领域，吸附重金属、染料等污染物，还可以用在高分子材料符合、涂料、锂离子电池和超级点容器等。不同货号氧化石墨烯技术参数源叶货号形态纯度厚度碳含量氧含量硫含量片层直径层数S28018金褐色片状99.9%0.33-1.0nm＜45＞54＜10.5-5um单层S24800褐黄色粉末98%~1nm＜46＞50＜1.50.2-10um单层S26783棕褐色液体98%~1nm＜46＞50＜1.50.2-10um单层

最后更新：2022-10-16 17:40:32

氧化石墨烯 - 简介

氧化石墨烯是一种石墨烯经氧化处理后的产物。它具有以下一些性质：

增加层间距离：氧化石墨烯的氧原子引入了石墨烯层间的间隔，导致层间距离增加。

力学性能下降：氧化石墨烯的结构改变，其力学性能较石墨烯而言下降。

电导率降低：氧化石墨烯的电导率较石墨烯低，氧原子的引入造成了电子迁移的障碍。

氧化石墨烯在目前的研究中具有广泛的应用：

储能材料：氧化石墨烯可以作为超级电容器和锂离子电池的电极材料，用于储存和释放能量。

催化剂：氧化石墨烯可以作为电催化剂，用于电解水制氢、CO2还原等反应。

传感器：氧化石墨烯可以作为生物传感器和化学传感器的材料，用于检测生物分子和环境中的化学物质。

制备氧化石墨烯的常用方法是氧化石墨烯的Hummers方法和改进的Hummers方法。Hummers方法将石墨以硫酸和硝酸的混合物进行氧化处理，然后用稀硝酸洗涤石墨烯，最后经过干燥即可得到氧化石墨烯。改进的Hummers方法在Hummers方法的基础上，通过加入还原剂（如亚砜）来减少氧化反应的副反应，提高氧化石墨烯的产率。

氧化石墨烯具有较高的表面活性和化学反应性，应避免与氧化剂、还原剂等化学物质接触，以免发生意外。

粉尘的吸入可能对呼吸道和肺部造成刺激，应注意良好的通风和使用个人防护设备。

在处理氧化石墨烯时，应采取适当的实验室安全措施，如佩戴手套、护目镜和实验室外套等。

在处理大量氧化石墨烯时，应避免其扬尘产生火源，以防止火灾和爆炸。

最后更新：2024-04-09 21:21:28