Chen Junyu, Huang Qiang, Huang Hongye, Mao Liucheng, Liu Meiying, Zhang Xiaoyong, Wei Yen
College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing, 100084, P. R. China.
Nanoscale. 2020 Feb 14;12(6):3574-3592. doi: 10.1039/c9nr08542d. Epub 2020 Feb 4.
MXenes are a new type of two-dimensional (2D) transition metal carbide or carbonitride material with a 2D structure similar to graphene. The general formula of MXenes is MXT, in which M is an early transition metal element, X represents carbon, nitrogen and boron, and T is a surface oxygen-containing or fluorine-containing group. These novel 2D materials possess a unique 2D layered structure, large specific surface area, good conductivity, stability, and mechanical properties. Benefitting from these properties, MXenes have received increasing attention and emerged as new substrate materials for exploration of various applications including, energy storage and conversion, photothermal treatment, drug delivery, environmental adsorption and catalytic degradation. The progress on various applications of MXene-based materials has been reviewed; while only a few of them covered environmental remediation, surface modification of MXenes has never been highlighted. In this review, we highlight recent advances and achievements in surface modification and environmental applications (such as environmental adsorption and catalytic degradation) of MXene-based materials. The current studies on the biocompatibility and toxicity of MXenes and related materials are summarized in the following sections. The challenges and future directions of the environmental applications of MXene-based materials are also discussed and highlighted.
MXenes是一种新型二维（2D）过渡金属碳化物或碳氮化物材料，具有类似于石墨烯的二维结构。MXenes的通式为MXT，其中M是早期过渡金属元素，X代表碳、氮和硼，T是表面含氧或含氟基团。这些新型二维材料具有独特的二维层状结构、大比表面积、良好的导电性、稳定性和机械性能。受益于这些特性，MXenes受到越来越多的关注，并成为用于探索各种应用的新型基底材料，包括能量存储与转换、光热处理、药物递送、环境吸附和催化降解。已经对基于MXene的材料的各种应用进展进行了综述；虽然其中只有少数涉及环境修复，但MXenes的表面改性从未被突出强调。在本综述中，我们重点介绍了基于MXene的材料在表面改性和环境应用（如环境吸附和催化降解）方面的最新进展和成果。以下部分总结了目前关于MXenes及相关材料的生物相容性和毒性的研究。还讨论并强调了基于MXene的材料在环境应用方面的挑战和未来方向。
