LI Lijun,BU Luxia*,LIU Shubin,et al.Effects of Different Surfactants on Dispersibility of Graphene Oxide[J].Plating & Finishing,2020,(6):23-26.[doi:10.3969/j.issn.1001-3849.2020.06.0050]
不同表面活性剂对氧化石墨烯分散性的影响
- Title:
- Effects of Different Surfactants on Dispersibility of Graphene Oxide
- 文献标志码:
- A
- 摘要:
- 采用超声分散和吸光光度法，考察了十二烷基磺酸钠（SDS）、十二烷基苯磺酸钠（SDBS）和吐温80三种不同表面活性剂对氧化石墨烯在水溶液中分散性的影响。结果表明：随着水溶液中表面活性剂的浓度增加，氧化石墨烯分散液的电导率也随之增加，表明添加表面活性剂能够有效提高其分散性。当溶液中SDBS浓度为1.2 mmol/L时，氧化石墨烯分散液的电导率为0.997 mS/cm。加入SDBS后的氧化石墨烯分散液放置45 h后，吸光度略微降低，表明SDBS这种表面活性剂具有良好的分散稳定能力。
- Abstract:
- The effects of sodium dodecyl sulfonate (SDS), sodium dodecylbenzene sulfonate (SDBS) and Tween 80 on the dispersibility of graphene oxide in aqueous solution were investigated by ultrasonic dispersion and absorbance spectrophotometry. The results showed that the conductivity of graphene oxide dispersion increased with the increase of surfactant concentration in aqueous solution, indicating that the addition of surfactant could effectively improve its dispersibility. When the SDBS concentration was 1.2 mmol/L, the conductivity of graphene oxide dispersion was 0.997 mS/cm. After the SDBS-added graphene oxide dispersion was left for 45 h, the absorbance decreased slightly, indicating that the surfactant SDBS had a good dispersive stability.
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备注/Memo
收稿日期： 2020-03-05；修回日期： 2020-04-20
作者简介：李丽君（1998—），女，本科生，email：1935880607@qq.com
通信作者：卜路霞， email： buluxia@126.com
基金项目： 天津市大学生创新训练项目（201810061239）天津农学院教育教学研究与改革项目（2018-A-15）