Citation: Yanbin Zhu, Gang Kong, Yuling Pan, Lian Liu, Bo Yang, Shuanghong Zhang, Delin Lai, Chunshan Che. An improved Hummers method to synthesize graphene oxide using much less concentrated sulfuric acid[J]. Chinese Chemical Letters, ;2022, 33(10): 4541-4544. doi: 10.1016/j.cclet.2022.01.060 shu

An improved Hummers method to synthesize graphene oxide using much less concentrated sulfuric acid

Yanbin Zhu ^a ,
Gang Kong ^a ,
Yuling Pan ^a ,
Lian Liu ^a ,
Bo Yang ^b ,
Shuanghong Zhang ^b ,
Delin Lai ^{a, *,} ,
Chunshan Che ^{a, *,}

a.
School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
b.
Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663, China

laidelin@scut.edu.cn

wyccs1975@163.com

Received Date: 26 October 2021
Revised Date: 17 January 2022
Accepted Date: 23 January 2022
Available Online: 31 January 2022

Figures(4)

The production of graphene oxide with less acid is beneficial to reduce the costs and lower the impact on the environment, but it is still a great challenge. In this work, a relatively simple, safe method for synthesizing graphene oxide with much less acid (decrease ~40%) is proposed. With assistance of the heat absorbed from environment and reaction system, the temperature of reaction system of low acid can be well controlled. More interestingly, the graphite can be completely oxidized into graphite oxide by using much less acid, with lowering the production of high-concentration aqueous waste acid (> 1 mol/L, decrease ~40%). A series of characterizations show that the prepared graphene oxide has similar yield and functional groups compared with that of using the conventional method. This work provides a safe and environmentally friendly choice for the large-scale production of graphene oxide and its derivative materials.
- Graphene oxide,
- Carbon materials,
- Oxidation,
- Low acid,
- Hummers method
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