摘要
随着社会与科技的飞速进步,化石能源急剧消耗,并且环境污染问题日益严重,寻找一种可持续的环境友好燃料能源成为了一个被广泛研究讨论的问题。半导体光催化剂的出现,为解决该问题提供了一条新途径,半导体光催化剂可以在光照的情况下通过分解水将太阳能转化为氢能,实现一种绿色环保的高热值能源的可持续生产。在众多的半导体光催化剂中,g-C3N4凭借制备方法简单、成本低廉、稳定性好以及合适的能带结构等优点而备受关注,但是由于其光生电子和空穴转移慢且易复合、光吸收范围较窄以及较低的比表面积,使其光催化性能不够理想,近几年众多学者针对这些问题开展了大量研究,以提升其光催化性能。本文针对g-C3N4的改性研究重点综述了元素掺杂改性和构建半导体异质结两方面的研究进展,归纳了目前存在的问题,提出了相应的解决建议,并对后续的发展趋势做出了展望。
With the rapid progress of society, science and technology, fossil energy is rapidly consumed, and environmental pollution is becoming increasingly serious. Develpoing a sustainable and environmentally friendly fuel energy source has become a widely discussed issue. The emergence of semiconductor photocatalysts provides a new way to solve this problem. Semiconductor photocatalysts can convert solar energy into hydrogen energy by decomposing water under the condition of light, and realize a sustainable production of green and environmentally friendly high-calorie energy. Among many semiconductor photocatalysts, g-C3N4 has attracted much attention due to its advantages such as simple preparation method, low cost, good stability, and suitable band structure. However, its photo-generated electrons and holes are slow to transfer and easy to recombine. The narrow absorption range and low specific surface area make its photocatalytic performance not ideal. In recent years, many scholars have conducted a lot of research on these issues to improve their photocatalytic performance. The research progress of elemental doping modification and the construction of semiconductor heterojunctions for the modification research of g-C3N4 are discussed;the existing problems and corresponding solutions are also analyzed, then, the following development trends are forecasted.
作者
邓细宇
邝鑫雅
字包叶
曾吉阳
马艺文
位海棠
张瑾
柳清菊
DENG Xiyu;KUANG Xinya;ZI Baoye;ZENG Jiyang;MA Yiwen;WEI Haitang;ZHANG Jin;LIU Qingju(School of Materials Science and Engineering,Yunnan University,Yunnan Key Laboratory of Micro-nano Materials and Technology,Kunming 650091,China)
出处
《功能材料与器件学报》
CAS
2020年第1期7-15,共9页
Journal of Functional Materials and Devices
基金
国家自然科学基金项目(51562038)
云南省自然科学基金重点项目(2018FY001-011).
关键词
g-C3N4
光催化产氢
元素掺杂
异质结构
g-C3N4
photocatalytic hydrogen production
elemental doping
heterostructure construction
作者简介
邓细宇(1996-),男,云南昆明人,在读硕士;通讯作者:柳清菊,教授,光催化材料的研究,E-mail:qjliu@ynu.edu.cn。
