제 목 : Ordered Mesoporous Carbon Nitrides and their Multiple Applications
연 사 : Prof. Ajayan Vinu(University of Newcastle)
일 시 : 2020년 2월 6일(목) 오전 11시
장 소 : 화학관 1층 조규학강의실 (330126호실)
Ordered Mesoporous Carbon Nitrides and their Multiple Applications
Global Innovative Center for Advanced Nanomaterials, University of Newcastle, Australia, Ajayan.firstname.lastname@example.org;
Mesoporous carbon nitrides (MCN) with large surface areas and uniform pore diameters are unique semiconducting materials and exhibit highly versatile structural and excellent physicochemical properties which find them applications in diverse fields such as metal free catalysis, photocatalytic water splitting, energy storage and conversion, gas adsorption, separation, and even sensing. Although there have been series of mesoporous boron nitride or carbon nitride materials with C3N4 stoichiometry reported [1-6], only a little attention has been given to the mesoporous materials with C3N5, C3N6, C3N7, etc even though they have unique band structure. In this talk, I will present the preparation, structural and morphological control, and the functionalization of highly ordered and graphitic carbon nitride materials with tunable nitrogen contents. The relation between the structural parameters and the performance of these materials in various applications including catalysis, sensing, and carbon capture and energy storage will be demonstrated [7-11]. 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. The application of these fascinating materials for carbon capture, water splitting, oxygen reduction reaction will also be presented [12-17].