使用有机酸和双氧水从石墨的生态剥落中快速制备非氧化石墨烯/水悬浮液

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-04-21 DOI:10.1016/j.matlet.2025.138576

Miguel Rosales-Guzmán, Lourdes Cruz-Martínez, Maricela García-Zamora, María del Rosario Rangel-Ramírez, Gladis Cortez-Mazatán, Enrique Díaz Barriga-Castro, Enrique Saldívar-Guerra

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引用次数: 0

摘要

水不仅是制备石墨烯/水分散体的理想液体，也是剥离过程中的无毒介质。然而，由于石墨烯固有的疏水性，石墨烯在水中的剥离是一项困难的任务。在这项工作中，我们提出了一种在超声波能量下通过过氧化氢、柠檬酸和抗坏血酸的组合来去除水中石墨烯的方法。所提出的方法有助于获得的石墨烯在水中分散，而不需要稳定剂、强氧化剂或有毒试剂。采用紫外可见光谱法、拉曼光谱法和高分辨率透射电镜对合成的石墨烯进行了表征。最后，测量并报告了石墨烯/水分散体的电导率。

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Fast elaboration of non-oxidized graphene/aqueous suspensions from the eco-friendly exfoliation of graphite using organic acids and hydrogen peroxide

Water is an ideal liquid not only for the elaboration of graphene/water dispersions but also as a non-toxic medium during the exfoliation procedure. However, the exfoliation of graphene in water is a difficult task due to the intrinsic hydrophobicity of graphene. In this work we propose a method to exfoliate graphene in water by a combination of hydrogen peroxide, citric acid and ascorbic acid under ultrasonic energy. The proposed methodology facilitates the dispersion of the obtained graphene in water without the need of stabilizers, strong oxidants or toxic reagents. The synthesized graphene was thoroughly characterized by UV–vis spectrometry, RAMAN spectroscopy and high-resolution transmission electron microscopy. Finally, the electrical conductivity of the graphene/water dispersions was measured and reported.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive