超声波探头类型、频率和静压对大规模石墨烯剥离的影响

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry Pub Date : 2024-10-14 DOI:10.1016/j.ultsonch.2024.107103

Minhui Gao , Hu Zong , Lei Yu , Jiacheng Yao , Su Zhao , Ying Zhou , Yifei Li , Yanyuan Zhou , Jiahao Zhang , Ronghe Li

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引用次数: 0

摘要

超声液相剥离法因其成本效益高且能最大限度地减少缺陷，已成为石墨烯制备的一个重要研究方向。然而，这种方法在工业化生产中面临着处理量方面的挑战。在本研究中，我们评估了用于制备 FLG 的不同频率和探头类型的工业级超声波匀浆器。在每次实验中，使用循环超声系统处理 1.5 千克石墨浆料。结果表明，25 kHz 哑铃探头产生的 FLG 最薄，缺陷密度最低。此外，在循环系统中施加 0.2 兆帕的静态压力可增强空化诱导的石墨片剥离，从而有效减少 FLG 的层数和分布范围。这种方法在提高导电性的同时最大限度地降低了缺陷密度。

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Impact of ultrasonic probe type, frequency, and static pressure on large-scale graphene exfoliation

The ultrasonic liquid phase exfoliation method has emerged as an essential research direction for graphene preparation due to its cost-effectiveness and ability to minimize defects. However, this method faces challenges related to processing throughput when scaled up for industrial production. In this study, industrial grade ultrasonic homogenizers with different frequencies and probe types were evaluated for the preparation of FLG. In each experiment, 1.5 kg of graphite slurry was treated using a cyclic ultrasonic system. The results demonstrated that the 25 kHz dumbbell probe produced the thinnest FLG with the lowest defect density. Moreover, applying a static pressure of 0.2 MPa in the cycle system enhanced the cavitation-induced exfoliation of graphite sheets, effectively reducing the layer count and distribution range of FLG. This method improves the conductivity while minimizing defect density.

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来源期刊

Ultrasonics Sonochemistry 化学-化学综合

CiteScore

15.80

自引率

11.90%

发文量

361

审稿时长

59 days

期刊介绍： Ultrasonics Sonochemistry stands as a premier international journal dedicated to the publication of high-quality research articles primarily focusing on chemical reactions and reactors induced by ultrasonic waves, known as sonochemistry. Beyond chemical reactions, the journal also welcomes contributions related to cavitation-induced events and processing, including sonoluminescence, and the transformation of materials on chemical, physical, and biological levels. Since its inception in 1994, Ultrasonics Sonochemistry has consistently maintained a top ranking in the "Acoustics" category, reflecting its esteemed reputation in the field. The journal publishes exceptional papers covering various areas of ultrasonics and sonochemistry. Its contributions are highly regarded by both academia and industry stakeholders, demonstrating its relevance and impact in advancing research and innovation.