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Producing Conductive Graphene-Nanocellulose Paper in One-pot

机译:一锅生产导电石墨烯-纳米纤维素纸

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摘要

This paper reports a facile one-pot method to produce graphene oxide nanocellulose composite (GNCC) that was subsequently reduced using l-ascorbic acid to form a conductive paper (CP). Cellulose fibers were directly added into the reaction system during graphite exfoliation using sulfuric acid to produce cellulose nano- or microfibrils through acid hydrolysis along with mechancial mixing. FTIR and Raman analyses indicated that reduction using l-ascorbic acid efficiently produced a well-deoxygenated CP with high conductivity of 116.3 +/- 1.5 S m(-1) at 20% graphene oxide loading. Furthermore, the presence of cellulose nano- or microfibrils improved CP thermal stability with onset degradation T (onset) of 319 A degrees C as well as mechanical properties with a specific tensile of 19 N mg(-1). This one-pot method substantially simplified the GNCC production process and has practical significance.
机译:本文报道了一种简便的一锅法生产氧化石墨烯纳米纤维素复合材料(GNCC)的方法,该复合材料随后使用l-抗坏血酸进行还原以形成导电纸(CP)。在石墨剥离过程中,使用硫酸将纤维素纤维直接添加到反应系统中,从而通过酸水解以及机械混合产生纤维素纳米纤维或微纤维。 FTIR和拉曼分析表明,使用l-抗坏血酸进行还原可以有效地产生脱氧性良好的CP,在20%的氧化石墨烯负载下,其电导率为116.3 +/- 1.5 S m(-1)。此外,纤维素纳米纤维或微纤维的存在改善了CP的热稳定性,起始降解T(起始)为319 A摄氏度,机械性能为19 N mg(-1)的比拉伸强度。这种一锅法大大简化了GNCC的生产过程,具有实际意义。

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