CAJ | 학술논문

石墨烯因其独特的二维晶体结构和优良的力学、电学、热学和光学特性,成为近几年材料领域的研究热点. 要实现石墨烯产业化,其关键问题是探索大规模、高质量、低成本的石墨烯制备技术. 超临界流体具有似气似液的优越性质,将其用于直接剥离制备石墨烯,具有高效、环保、产物质量高等优势. 本文综述了近年来超临界流体技术应用于直接液相或气相剥离法制备石墨烯的研究进展,着重讨论了超临界二氧化碳辅助超声处理制备石墨烯的优势,以及超临界流体直接剥离法制备石墨烯的机理,在此基础上,指出目前文献中尚存在的不足以及亟待解决的关键问题.
석묵희인기독특적이유정체결구화우량적역학、전학、열학화광학특성,성위근궤년재료영역적연구열점. 요실현석묵희산업화,기관건문제시탐색대규모、고질량、저성본적석묵희제비기술. 초림계류체구유사기사액적우월성질,장기용우직접박리제비석묵희,구유고효、배보、산물질량고등우세. 본문종술료근년래초림계류체기술응용우직접액상혹기상박리법제비석묵희적연구진전,착중토론료초림계이양화탄보조초성처리제비석묵희적우세,이급초림계류체직접박리법제비석묵희적궤리,재차기출상,지출목전문헌중상존재적불족이급극대해결적관건문제.
Graphene has become a hot topic in recent years for its unique two-dimensional crystal structure and ex-cellent mechanical, electrical, thermal, and optical properties. In order to realize graphene industrialization, it is a key problem to explore a large-scale preparing method of graphene with high quality and low cost. Supercritical flu-ids have advantages of liquid-like high densities and gas-like low viscosities. It is an environmentally benign and highly efficient method to prepare high quality graphene by using the supercritical fluids exfoliation method. This ar-ticle introduces the research progress in recent years of preparing graphene using the direct liquid phase method or gas phase exfoliation method, emphasizing on the advantage of supercritical carbon dioxide assisted ultrasonic treat-ment and the mechanism of supercritical fluids exfoliation method. In addition, the inadequacies in the literatures and the research direction in the future are also discussed.