Cavitation-Free Shear Emulsification Breaks the Yield–Damage Trade-Off in MXene Delamination

IF 8.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2026-09-07 Epub Date: 2026-07-29 DOI:10.1021/acsmaterialslett.6c00565

Yiqian Wang, Xingyuan Wei, Ziqi Zhao, Anqi Chen, Jingfeng Wang, Yuyan Liu, Hui Kang, Zhimin Fan

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Abstract

The production of high-quality monolayer MXene nanosheets is constrained by the trade-off between delamination efficiency and structural damage. Here, we report a cavitation-free, high-speed shear emulsification strategy for the rapid, low-damage delamination of multilayer Ti₃C₂T_x MXene. Continuous fluid shear promotes interlayer sliding and separation, enabling an 82% monolayer yield within 10 min while retaining an average lateral size of approximately 5 μm and a film conductivity of 10,800 S cm^–1, outperforming conventional ultrasonic delamination. Structural and spectroscopic analyses show that crystallinity and surface terminations are retained, enabling assembly into dense lamellar films. These films exhibit electromagnetic interference (EMI) shielding effectiveness above 60 dB and an infrared emissivity of 0.11. Furthermore, the process is readily scalable to hundred-gram-level delamination, highlighting its potential for the large-scale production of high-quality MXene for multifunctional applications.

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无空化剪切乳化打破了MXene分层中屈服-损伤的权衡

高质量单层MXene纳米片的生产受到分层效率和结构损伤之间权衡的制约。在这里，我们报道了一种无空化、高速剪切乳化策略，用于多层Ti3C2Tx MXene的快速、低损伤分层。连续的流体剪切促进了层间的滑动和分离，在10分钟内实现了82%的单层产率，同时保持了约5 μm的平均横向尺寸和10,800 S cm-1的薄膜导电性，优于传统的超声波分层。结构和光谱分析表明，结晶度和表面末端被保留，使组装成致密的层状薄膜。这些薄膜具有60 dB以上的电磁干扰屏蔽效能和0.11的红外发射率。此外，该工艺很容易扩展到百克级的分层，突出了其大规模生产高质量MXene的潜力，可用于多功能应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.