摘要
氮化碳近年来在光催化领域备受关注,具有特殊的电子光学结构以及优异的化学稳定性能,且禁带宽度非常有利于可见光的吸收,在利用太阳能降解有机污染物方面具有很大的前景.由于它本身比表面积小,产生的光生电子和空穴易复合,抑制了催化剂的光催化活性.在此本文系统的介绍了氮化碳的结构,性能和催化机理,综合了近年来的改性手段,包括改善制备工艺,以及对其进行纳米化,掺杂,官能化,复合等方法,提高比表面积和改善能带结构,并对其以后的发展进行了展望.
Carbon Nitride has attracted much attention in the field of photocatalysis in recent year, which possesses special electronicoptical structure and excellent chemical stability with the gap very conducive to the absorption of visible light, so it has great prospectsin the degradation of organic pollutants using solar energy. However, its specific surface area is small, and the photoelectric and cavita-tion can be easily combined, inhibiting the photocatalytic activity of the catalyst. The structure, performance and catalytic mechanism of carbon nitride, as well as its nanocrystallization,doping, faculties, and methods of compound were introduced, combined with themodification methods in recent years, including the improvement of the preparation technolog, sea and improve the band structure. Its future development prospect was also presented.
出处
《内蒙古科技大学学报》
CAS
2017年第4期377-382,共6页
Journal of Inner Mongolia University of Science and Technology
基金
国家自然科学基金资助项目(21407084)
关键词
光催化剂
光生电子和空穴
能带结构
photocatalyst
photogenerated electronhole
energy band structure
