Li Haiying, Han Yufei, Qiu Pengyu, Qian Yuzhe
College of Architecture, Nanjing Tech University, Nanjing 211816, China.
Institute of International Education, New Era University College, Kajang 43000, Malaysia.
Nanomaterials (Basel). 2024 Nov 29;14(23):1922. doi: 10.3390/nano14231922.
Reduced graphene oxide (rGO) exhibits mechanical, optoelectronic, and conductive properties comparable to pristine graphene, which has led to its widespread use as a method for producing graphene-like materials in bulk. This paper reviews the characteristics of graphene oxide and the evolution of traditional reduction methods, including chemical and thermal techniques. A comparative analysis reveals that these traditional methods encounter challenges, such as toxicity and high energy consumption, while plasma reduction offers advantages like enhanced controllability, the elimination of additional reducing agents, and reduced costs. However, plasma reduction is complex and significantly influenced by process parameters. This review highlights the latest advancements in plasma technology for reducing graphene oxide, examining its effectiveness across various gas environments. Inert gas plasmas, such as argon (Ar) and helium (He), demonstrate superior reduction efficiency, while mixed gases facilitate simultaneous impurity reduction. Additionally, carbon-based gases can aid in restoring defects in graphene oxide. This paper concludes by discussing the future prospects of plasma-reduced graphene and emphasizes the importance of understanding plasma parameters to manage energy and chemical footprints for effective reduction.
还原氧化石墨烯（rGO）具有与原始石墨烯相当的机械、光电和导电性能，这使其作为一种大规模生产类石墨烯材料的方法得到了广泛应用。本文综述了氧化石墨烯的特性以及传统还原方法的演变，包括化学和热技术。比较分析表明，这些传统方法面临毒性和高能耗等挑战，而等离子体还原具有增强可控性、无需额外还原剂和降低成本等优势。然而，等离子体还原过程复杂，且受工艺参数影响显著。本综述重点介绍了用于还原氧化石墨烯的等离子体技术的最新进展，考察了其在各种气体环境中的有效性。氩气（Ar）和氦气（He）等惰性气体等离子体表现出卓越的还原效率，而混合气体有助于同时减少杂质。此外，碳基气体有助于修复氧化石墨烯中的缺陷。本文最后讨论了等离子体还原石墨烯的未来前景，并强调了理解等离子体参数以控制能量和化学足迹以实现有效还原的重要性。
