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学术报告:Novel Nanoporous Architectonic Materials and their Applications新型纳米多孔结构材料及其应用
日期:2016/9/13 15:16:40  发布:化学生物与材料工程学院  浏览: 671

时间:2016年9月20日(星期二)  10:00-11:30

地点:逸夫楼B座139


报告人:Ajayan Vinu教授
南澳大利亚大学,莫森站拉克斯分校,未来产业研究所,信息、工程和环境纳米材料处

报告摘要:
Nanoporous materials have received enormous attention in recent years because of their remarkable properties such as high specific surface areas, large specific pore volumes, chemical inertness, and good chemical and mechanical stability, which lend them to potential applications. The incorporation of hetero atoms such as boron and nitrogen in these nanoporous materials can further offer the electronic and semi-conducting properties. In this talk, I will present the preparation, structural and morphological control, and the functionalization of highly ordered and graphitic nanoporous carbon and nitrides with tunable pore diameters and textural features. The relation between the structural parameters and the performance of these materials in various applications including catalysis, sensing and energy storage will be demonstrated. In the second part of the talk, the fabrication of various nanoporous films including carbons, nitrides, semiconducting nanostructures, and biomolecules with tunable macroporosity, thickness, and morphology will be presented. These porous films have been fabricated by using P123 block copolymer and polystyrene spheres as templates, and utilized for sensing. For example, nanoporous CN film offers the superior affinities for toxic acid molecules but the selectivity can be totally reversed for basic molecule after treatment with UV. This novel highly ordered film with photo-switch functions can offer new possibilities for the development of sensing systems for toxic molecules。

近些年纳米多孔材料因其卓越的性能,如高比表面积,大孔体积,耐腐蚀性和极好的化学机械稳定性等而受到巨大关注,并且有着广泛的应用潜力。在这些纳米多孔材料中引入硼和氮等杂原子可以增强材料的电性能和半导体性质。在本次报告中,我将介绍孔径可调和结构可控的有序多孔石墨化纳米碳和氮化物的制备、结构和形态控制及功能化。揭示这些材料在不同应用中结构参数与催化、传感和能量储存等性能之间的关系。在报告的第二部分,将要介绍各种纳米多孔膜的制备,包括碳、氮化物、半导体纳米结构、孔隙厚度和形态可调的生物分子。这些多孔薄膜的制备以P123嵌段共聚物和聚苯乙烯微球为模板,可用于传感领域。如:纳米多孔CN膜对有毒酸分子具有优越的亲和力,但在经过紫外线处理后,材料的选择性完全转为碱性分子。这种具有光开关功能的新型高度有序多孔薄膜材料可以为有毒分子传感系统的开发带来新的可能。

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