In this work the ability of pure surfactant Sodium Dodecyl Sulfate (SDS), Cetyltrimethyl Ammonium Bromide (CTAB) and their mixed surfactants for graphene dispersion in aqueous solution was investigated. The uniform and stable dispersion solution was obtained for graphene with the mixtures of SDS and CTAB at lower concentration as compared to the pure one. The SDS-based surfactants exhibited better dispersion as compared to CTAB-based surfactants due to smaller-sized graphene as was investigated via Zeta potential measurements. Zeta potential was utilized to characterize the colloidal stability of surface charges within the mixtures. The mixed surfactants utilized in the present study showed a better ability to disperse graphene and its derivatives and hence are well suited for practical applications.

在这项工作中，研究了纯表面活性剂十二烷基硫酸钠 (SDS)、十六烷基三甲基溴化铵 (CTAB) 及其混合表面活性剂在水溶液中分散石墨烯的能力。与纯物质相比，具有较低浓度的 SDS 和 CTAB 混合物的石墨烯获得了均匀稳定的分散溶液。与基于 CTAB 的表面活性剂相比，基于 SDS 的表面活性剂表现出更好的分散性，这是由于通过 Zeta 电位测量研究的较小尺寸的石墨烯。Zeta 电位用于表征混合物中表面电荷的胶体稳定性。本研究中使用的混合表面活性剂显示出更好的分散石墨烯及其衍生物的能力，因此非常适合实际应用。