FORMATION PROCESS AND STRUCTURE OF GRAPHITE OXIDE
FORMATION PROCESS AND STRUCTURE OF GRAPHITE OXIDE
复制标题
DOI：
10.1016/0008-6223(94)90168-6
复制
发表时间：
1994-01-01
期刊：
影响因子：
10.9
通讯作者：
MATSUO, Y
中科院分区：
文献类型：
--
作者：
NAKAJIMA, T;MATSUO, Y
Formation process of graphite oxide has been investigated by using a modified Staudenmaier method and an electrochemical one. The modified Staudenmaier method revealed that graphite oxide is formed via stage 1 graphite bi-intercalation compounds of HNO3 and H2SO4.另一方面，电化学方法表明，氧化石墨是通过在 11.6 M HClO4 溶液中的第一阶段 HClO4 石墨插层化合物（GIC）和在 9.2 M HClO4 溶液中通过第二阶段 HClO4 GIC 合成的。 Structure of graphite oxide was studied by fluorination of graphite oxide at 50-200-degrees-C. The main fluorination reaction is the substitution of hydroxyl group by fluorine atom.通过 Brodie 和改进的 Staudenmaier 方法制备的氟化石墨氧化物的 c 轴重复距离 (I(c)) 约为 0.9 nm，接近 2 级聚二碳一氟化物 (C2F)n 的 c 轴重复距离 (I(c))。氧化石墨的面内晶格参数a0通过氟化向(C2F)n的方向增加(0.251 nm)，并通过脱水向石墨本身的面内晶格参数a0减小(0.246 nm)。 These results strongly support the (C2F)n-type structure model of graphite oxide,
Formation process of graphite oxide has been investigated by using a modified Staudenmaier method and an electrochemical one. The modified Staudenmaier method revealed that graphite oxide is formed via stage 1 graphite bi-intercalation compounds of HNO3 and H2SO4. On the other hand, the electrochemical method showed that graphite oxide is synthesized via stage 1 HClO4 graphite intercalation compound (GIC) in 11.6 M HClO4 solution and via stage 2 HClO4 GIC in 9.2 M HClO4 solution. Structure of graphite oxide was studied by fluorination of graphite oxide at 50-200-degrees-C. The main fluorination reaction is the substitution of hydroxyl group by fluorine atom. The c-axis repeat distances (I(c)) of fluorinated graphite oxides, prepared by both the Brodie and the modified Staudenmaier methods, were around 0.9 nm, which is close to that of stage 2 type poly(dicarbon monofluoride), (C2F)n. The in-plane lattice parameter a0 of graphite oxide increased toward that of (C2F)n by fluorination (0.251 nm), and decreased toward that of graphite itself by dehydration (0.246 nm). These results strongly support the (C2F)n-type structure model of graphite oxide,