石墨烯氧化物的光合作用电化学合成
Duhong Chen1, Zhen Lin1, Matthew M Sartin1
1State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering; Department of Mechanical and Electrical Engineering, School of Aerospace Engineering; and Graphene Industry and Engineering Research Institute, Xiamen University, Xiamen 361005, China.
Journal of the American Chemical Society
|March 26, 2020
概括
一种新的光合作用电化学方法有效地产生高质量的石墨烯氧化物 (GO). 这种先进的石墨烯氧化物对淡水和净水应用具有潜力.
科学领域:
- 材料科学
- 电化学
- 纳米技术
背景情况:
- 由于其功能组,石墨烯氧化物 (GO) 对可持续能源和环境应用至关重要.
- 像Hummers的方法这样的现有方法可以产生GO,但电化学剥离提供了更绿色的替代方法,氧化程度较低.
- 需要采用改善晶度和更高氧化度的GO生产方法.
研究的目的:
- 为石墨烯氧化物 (GO) 制定高效率的生产战略.
- 通过一种新的电化学方法提高GO的结晶性和氧化程度.
- 探索功能化GO在水净化和海水淡化中的应用.
主要方法:
- 一种光合作用电化学方法,利用氧酸盐离子作为间隔离子和协同反应物.
- 石墨的电化学剥离以产生氧化石墨烯.
- 用于透性研究的氨酸联合组装的GO膜组装.
主要成果:
- 光合作用方法实现了与汉默斯方法相比较的GO氧化度.
- 合成的GO表现出更好的结晶性,更少的层和更大的片大小.
- 氨酸组合的GO膜显示有选择性的透性,允许水通过,同时阻断像Na+,K+和Mg2+这样的离子.
结论:
- 光合作用电化学策略提供了高品质石墨烯氧化物的高效和绿色途径.
- 开发的GO功能化和组装过程对淡化和净化水具有前景.
- 这项工作引入了一种在电皮过程中直接使用石墨烯的新方法.
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