Tailoring the Composition, Morphology and Assembly of MXene Nanosheets

定制 MXene 纳米片的组成、形态和组装

• 批准号: 1760859
• 负责人: Jodie Lutkenhaus
• 金额: $ 54.48万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-06-01 至 2021-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1760859&HistoricalAwards=false
• 关键词: Tailoring; Composition; Morphology; Assembly; MXene

MXenes are a recently discovered fascinating class of 2-D transition metal (M) - carbon (X) nanosheets that hold promise to advance the national prosperity and defense in numerous areas associated with advanced energy, electronics, and defense applications. This grant advances the processing of MXene nanostructures with different compositions and morphologies and their assembly into functional nanofilms. The grant will address the major research challenges associated with the production of MXenes and develop the processing techniques to form these into usable films as well as determine the resultant process-property relationships. A variety of MXenes are theoretically possible, but have yet to be experimentally obtained. MXenes exist as 2D sheets and extending their lateral dimension from nano-to-macro size remains challenging. This project will develop processing methodologies for producing MXenes with compositions and functional groups that have previously been impossible. The planned incorporation of these interesting materials into polymer composites would allow their integration into many coating technologies. The control over the material properties through manipulation of composition, shape, structure, and multi-layer architectures will allow an expansion of the range of their physical properties. The researchers and students will engage in multiple outreach efforts to foster education, research, diversity, and representation in materials science at the graduate, undergraduate, and K-12 levels, with the special focus on developing students entrepreneurship skills. The major current limitations in both MXene synthesis and processing and the underlying process-structure-property relationships at both the nano or individual nanosheet level and the macroscopic films and composites level will be investigated. These materials are derived from layered ceramics (i.e., MAX phases) and have a wide range of possible compositions and functional groups. The "MX" name refers to the M (transition metal) and X (typically carbon) in these layered structures; a common example includes Ti3C2Tx, where T stands for various terminal groups. The specific research tasks include the following: (1) The compositional space of existing MXenes will be extended by altering the composition of the parent MAX phase to achieve easy etching of A layers and by applying an electrochemical bias; (2) Capillary forces during spray drying will manipulate MXene morphology and create shelf-stable 3-D MXene particles; and (3) Properties and performance of macroscopic MXene-polymer structures created using layer-by-layer assembly as a function of MXene interlayer spacing and morphology will be determined. At each stage, MXene composition, functional groups, and architecture will be connected to the bulk mechanical and electrical properties.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

MXenes是最近发现的一种令人着迷的二维过渡金属(M)-碳(X)纳米薄片，有望在与先进能源、电子和国防应用相关的众多领域促进国家繁荣和国防。这项资助推动了具有不同组成和形貌的MXene纳米结构的加工，并将其组装成功能纳米膜。这笔赠款将解决与MXenes生产相关的主要研究挑战，并开发加工技术，将其形成可用的薄膜，并确定由此产生的工艺-性能关系。理论上有多种MXenes，但尚未在实验中获得。MXenes以2D片材的形式存在，将其横向尺寸从纳米尺寸扩展到宏观尺寸仍然具有挑战性。该项目将开发用于生产MXenes的加工方法，这些方法的组成和官能团以前是不可能的。将这些有趣的材料纳入聚合物复合材料的计划将使它们能够集成到许多涂层技术中。通过对组成、形状、结构和多层结构的操纵来控制材料属性，将允许扩展其物理属性的范围。研究人员和学生将致力于在研究生、本科生和K-12年级培养材料科学的教育、研究、多样性和代表性，特别关注培养学生的创业技能。将研究目前MXene合成和加工中的主要限制，以及纳米或单个纳米片级别以及宏观薄膜和复合材料级别的潜在工艺-结构-性能关系。这些材料来源于层状陶瓷(即MAX相)，并具有广泛的可能组成和官能团。“MX”指的是这些层状结构中的M(过渡金属)和X(通常是碳)；一个常见的例子包括Ti3C2Tx，其中T代表各种端基。具体的研究任务包括：(1)通过改变母体MAX相的组成来扩展现有MXene的组成空间，以实现A层的轻松刻蚀；(2)喷雾干燥过程中的毛细管力将操纵MXene的形态，并创建货架稳定的3-D MXene颗粒；(3)将确定根据MXene层间间距和形态的函数，使用逐层组装创建的宏观MXene-聚合物结构的性质和性能。在每个阶段，MXene的组成、官能团和架构将连接到主体机械和电气属性。该奖项反映了NSF的法定使命，并已通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Graphene Oxide Synthesis: Reaction Calorimetry and Safety

• DOI: 10.1021/acs.iecr.0c00644
• 发表时间: 2020-04
• 期刊: Industrial & Engineering Chemistry Research
• 影响因子: 4.2
• 作者: Pritishma Lakhe;Devon L. Kulhanek;Xiaofei Zhao;M. Papadaki;M. Majumder;Micah J. Green

Flocculation of MXenes and Their Use as 2D Particle Surfactants for Capsule Formation

• DOI: 10.1021/acs.langmuir.0c03244
• 发表时间: 2021-02-16
• 期刊: LANGMUIR
• 影响因子: 3.9
• 作者: Cao, Huaixuan;Escamilla, Maria;Pentzer, Emily B.
• 通讯作者: Pentzer, Emily B.

Antioxidants Unlock Shelf-Stable Ti3C2T (MXene) Nanosheet Dispersions

• DOI: 10.1016/j.matt.2019.05.020
• 发表时间: 2019-08
• 期刊: Matter
• 影响因子: 18.9
• 作者: Xiaofei Zhao;Aniruddh Vashisth;E. Prehn;Wanmei Sun;Smit Shah;T. Habib;Yexiao Chen;Zeyi Tan

Oxidation stability of Ti3C2Tx MXene nanosheets in solvents and composite films

• DOI: 10.1038/s41699-019-0089-3
• 发表时间: 2019-02-13
• 期刊: NPJ 2D MATERIALS AND APPLICATIONS
• 影响因子: 9.7
• 作者: Habib, Touseef;Zhao, Xiaofei;Green, Micah J.
• 通讯作者: Green, Micah J.

Layer-by-Layer Assembly of Reduced Graphene Oxide and MXene Nanosheets for Wire-Shaped Flexible Supercapacitors

用于线状柔性超级电容器的还原氧化石墨烯和 MXene 纳米片的逐层组装

• DOI: 10.1021/acsami.0c19619
• 发表时间: 2021
• 期刊: ACS Applied Materials & Interfaces
• 影响因子: 9.5
• 作者: Yun, Junyeong;Echols, Ian;Flouda, Paraskevi;Chen, Yijun;Wang, Shaoyang;Zhao, Xiaofei;Holta, Dustin;Radovic, Miladin;Green, Micah J.;Naraghi, Mohammad
• 通讯作者: Naraghi, Mohammad