National Creative Research Initiative, Center for Smart Molecular Memory, Department of Chemistry, Sungkyunkwan University, 300 Cheoncheon-Dong, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea.
Sci Rep. 2013;3:1929. doi: 10.1038/srep01929.
A new chemical dual-functional reducing agent, thiophene, was used to produce high-quality reduced graphene oxide (rGO) as a result of a chemical reduction of graphene oxide (GO) and the healing of rGO. Thiophene reduced GO by donation of electrons with acceptance of oxygen while it was converted into an intermediate oxidised polymerised thiophene that was eventually transformed into polyhydrocarbon by loss of sulphur atoms. Surprisingly, the polyhydrocarbon template helped to produce good-quality rGOC (chemically reduced) and high-quality rGOCT after thermal treatment. The resulting rGOCT nanosheets did not contain any nitrogen or sulphur impurities, were highly deoxygenated and showed a healing effect. Thus the electrical properties of the as-prepared rGOCT were superior to those of conventional hydrazine-produced rGO that require harsh reaction conditions. Our novel dual reduction and healing method with thiophene could potentially save energy and facilitate the commercial mass production of high-quality graphene.
一种新型的化学双功能还原剂噻吩，通过还原氧化石墨烯（GO）和修复还原氧化石墨烯（rGO），产生了高质量的还原氧化石墨烯（rGO）。噻吩通过向氧原子提供电子而被还原，同时它被转化为一种中间氧化聚合的噻吩，最终通过硫原子的损失转化为聚碳氢化合物。令人惊讶的是，聚碳氢化合物模板有助于在热处理后产生高质量的 rGOC（化学还原）和 rGOCT。所得的 rGOCT 纳米片不含任何氮或硫杂质，高度脱氧，并显示出修复效果。因此，所制备的 rGOCT 的电性能优于需要苛刻反应条件的传统水合肼产生的 rGO。我们使用噻吩的新型双重还原和修复方法有可能节省能源，并促进高质量石墨烯的商业大规模生产。
