二维材料的制备、改性及应用
二维材料如石墨烯、氮化硼和过渡金属二硫属化合物等，由于其特殊的电学、光学、热学、力学、催化等物理和化学性质，近年来受到广泛关注和应用。本课题组重点关注二维材料的制备、改性以及其有机-无机纳米复合物的研究。我们利用溶剂热切割的方法，制备了一系列新型量子点，包括过渡金属二硫属化合物、氮化硼以及氮掺杂石墨碳等，研究了相关电化学催化特性以及作为生物相容的荧光探针等应用前景；利用两亲性功能高分子剥离并修饰二维片层材料，制备了新型多功能有机-无机复合材料，研究了复合物在高性能膜材料和刺激响应智能水凝胶等方面的应用，旨在探究和拓宽二维材料的应用范围，同时赋予传统高分子材料以新功能。
液相剥离结合溶剂热切割的方法制备过渡金属二硫属化合物纳米片层以及荧光量子点，所制备的新型荧光量子点具有良好的生物相容性以及有效的细胞标记能力，纳米片层与量子点的复合物则具有高效析氢催化能力。这一方法开拓了二维片层材料结构调控的新思路，以及为优化材料析氢催化性能提供了新方法[1]。
我们合成了具有温度敏感的咪唑类聚离子液体功能高分子，利用其中咪唑基团对过渡金属二硫属化合物的非共价相互作用，一步剥离并修饰了二硒化钼纳米片层，进一步交联纳米片层表面的功能高分子，可制得多功能刺激响应智能水凝胶[3]。
我们对蚕丝蛋白进行水热处理，一步制得荧光碳球，具有良好的生物相容性与细胞标记能力。制备过程所用原料绿色环保，制备方法简单高效，大大拓宽了荧光碳材料的制备思路[2]。
代表性论文
- Shengjie Xu, Dian Li, and Peiyi Wu*. One-Pot, Facile, and Versatile Synthesis of Monolayer MoS2/WS2 Quantum Dots as Bioimaging Probes and Efficient Electrocatalysts for Hydrogen Evolution Reaction. Adv. Funct. Mater. 2015, 25, 1127-1136.
- Wei Li, Zehui Zhang, Biao Kong, Shanshan Feng, Jinxiu Wang, Lingzhi Wang, Jianping Yang, Fan Zhang, Peiyi Wu*, and Dongyuan Zhao*. Simple and Green Synthesis of Nitrogen-Doped Photoluminescent Carbonaceous Nanospheres for Bioimaging. Angew. Chem. Int. Ed. 2013, 52, 8151-8155.
- Zhouyue Lei, Yuanyuan Zhou, and Peiyi Wu*. Simultaneous Exfoliation and Functionalization of MoSe2 Nanosheets to Prepare "Smart" Nanocomposite Hydrogels with Tunable Dual Stimuli-Responsive Behavior. Small 2016, 12, 3112-3118.
- Shengjie Xu, Zhouyue Lei, and Peiyi Wu*. Facile Preparation of 3D MoS2/MoSe2 Nanosheet-Graphene Networks as Efficient Electrocatalysts for the Hydrogen Evolution Reaction. J. Mater. Chem. A 2015, 3, 16337-16347.
- Shengtong Sun, and Peiyi Wu*. A One-Step Strategy for Thermal- and pH-Responsive Graphene Oxide Interpenetrating Polymer Hydrogel Networks. J. Mater. Chem. 2011, 21, 4095-4097.
- Zhouyue Lei, Shengjie Xu, Jiaxun Wan, and Peiyi Wu*. Facile Preparation and Multifunctional Applications of Boron Nitride Quantum Dots. Nanoscale 2015, 7, 18902-18907.
- Zhouyue Lei, Shengjie Xu, Jiaxun Wan, and Peiyi Wu*. Facile Synthesis of N-Rich Carbon Quantum Dots by Spontaneous Polymerization and Incision of Solvents as Efficient Bioimaging Probes and Advanced Electrocatalysts for Oxygen Reduction Reaction. Nanoscale 2016, 8, 2219-2226.
- Zhouyue Lei, Wencheng Zhu, Shengjie Xu, Jian Ding, Jiaxun Wan, and Peiyi Wu*. Hydrophilic MoSe2 Nanosheets as Effective Photothermal Therapy Agents and Their Application in Smart Devices. ACS Appl. Mater. Interfaces 2016, 8, 20900-20908.
- Xiongwei Wang, and Peiyi Wu*. Preparation of Highly Thermally Conductive Polymer Composite at Low Filler Content Via a Self-Assembly Process between Polystyrene Microspheres and Boron Nitride Nanosheets. ACS Appl. Mater. Interfaces 2017, 9, 19934-19944..
- Shengtong Sun, Yewen Cao, Jiachun Feng*, and Peiyi Wu*. Click Chemistry as a Route for the Immobilization of Well-Defined Polystyrene onto Graphene Sheets. J. Mater. Chem. 2010, 20, 5605-5607.