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Aqueous cellulose solution assisted direct exfoliation of graphite to high concentration graphene dispersion
Materials Letters ( IF 3 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.matlet.2020.129081
Pengxiang Yu , Xiao Wang , Kangmin Zhang , Dengjian Zhou , Mingyuan Wu , Qingyun Wu , Jiuyi Liu , Jianjun Yang , Jianan Zhang

Abstract In the present work, high concentration graphene dispersion was prepared by sonication-assisted liquid-phase exfoliation (LPE) using inexpensive and environment-friendly aqueous cellulose solution. The highly efficient exfoliation of starting graphite into graphene was achieved by the noncovalent affinity of cellulose towards graphene. The obtained aqueous graphene sheets exhibited remarkably high concentration of 8.54 mg mL-1 with fewer defects (ID/IG ∼ 0.53) and multi-layers structures, which promised a potential ideal candidate for applications in antistatic, corrosion protection, and electromagnetic compatibility.

中文翻译:

纤维素水溶液辅助石墨直接剥离成高浓度石墨烯分散体

摘要 在目前的工作中,使用廉价且环保的纤维素水溶液通过超声辅助液相剥离 (LPE) 制备高浓度石墨烯分散体。通过纤维素对石墨烯的非共价亲和力,将起始石墨高效剥离成石墨烯。获得的水性石墨烯片表现出非常高的浓度,为 8.54 mg mL-1,具有较少的缺陷(ID / IG ∼ 0.53)和多层结构,有望成为抗静电、腐蚀防护和电磁兼容性应用的潜在理想候选者。
更新日期:2021-02-01
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