Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia.
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
Chemosphere. 2022 Jan;287(Pt 3):132319. doi: 10.1016/j.chemosphere.2021.132319. Epub 2021 Sep 23.
Effective methods for removing harmful metals from wastewater have had a huge impact on reducing freshwater scarcity. Because of its excellent removal effectiveness, simplicity and low cost at ambient conditions, adsorption is one of the most promising purifying approaches. MXene-based nanoarchitectures have proven to be effective adsorbents in a variety of harmful metal removal applications. This owes from the distinctive features such as, hydrophilicity, high surface area, electron-richness, great adsorption capacity, and activated metallic hydroxide sites of MXenes. Given the rapid advancement in the design and synthesis of MXene nanoarchitectures for water treatment, prompt updates on this research area are needed that focus on removal of toxic metal, such as production routes and characterization techniques for the advantages, merits and limitations of MXenes for toxic metal adsorption. This is in addition to the fundamentals and the adsorption mechanism tailored by the shape and composition of MXene based on some representative paradigms. Finally, the limits of MXenes are highlighted, as well as their potential future research directions for wastewater treatment. This manuscript may initiate researchers to improve unique MXene-based nanostructures with distinct compositions, shapes, and physiochemical merits for effective removal of toxic metals from wastewater.
从有效去除废水中有害金属的方法入手，可以极大地缓解淡水资源短缺问题。由于吸附法在常温条件下具有去除效果好、操作简便、成本低等优点，是最有前途的净化方法之一。基于 MXene 的纳米结构已被证明在各种有害金属去除应用中是一种有效的吸附剂。这归因于 MXene 所具有的独特特性，如亲水性、高比表面积、电子富性、大吸附容量和活化金属氢氧化物位点。鉴于 MXene 纳米结构在水处理方面的设计和合成取得了快速进展，需要及时更新该研究领域的信息，重点关注去除有毒金属，例如生产路线和表征技术，以及 MXene 用于有毒金属吸附的优势、优点和局限性。此外，还需要介绍 MXene 的基础原理和吸附机制，以及基于一些代表性范例的 MXene 的形状和组成的调整。最后，本文还强调了 MXene 的局限性，以及其在废水处理方面的潜在未来研究方向。本文可能会促使研究人员改进具有独特组成、形状和物理化学特性的 MXene 基纳米结构，以有效去除废水中的有毒金属。
