报告题目：聚合物氮化碳光催化分解纯水

报告时间：2020年11月14日 下午16:30-17:30

报告地点：科技园401会议室

报 告 人：沈少华（教授、西安交通大学）

报告摘要:

Solar hydrogen conversion via photocatalytic water splitting is an important technology for energy and environment sustainability, since the pioneering work of Fujishima and Honda in 1972, tremendous research on semiconductor-based photocatalytic water splitting has yielded better understanding of the processes as well as encouraging development of high efficiency photocatalysts for solar hydrogen generation. Recently, polymer photocatalysts (such as polymeric carbon nitride) with tunable molecular structures have emerged as promising alternatives to inorganic photocatalysts for overall water splitting. Unfortunately, developing single-component photocatalysts for overall water splitting has been proven rather difficult, due to the fact that very few polymer photocatalysts possess suitable band structures with sufficient redox potentials to simultaneously drive water oxidation and proton reduction reactions. In this talk, some typical semiconductors with narrow band gaps (e.g., g-C₃N₄ as photocatalyst) enabling excellent optical absorption has been introduced.However, for these semiconductors for solar water splitting, the serious charge carrier recombination and sluggish surface water oxidation reaction kinetics have greatly limited the photocatalytic performances. Herein, g-C₃N₄based nanostructures and heterostructures have well rationally designed for efficient photocatalytic overall water splitting, with some recent progresses in our group will be introduced.

报告人简介：

沈少华，西安交通大学教授、博导，动力工程多相流国家重点实验室副主任，博士毕业于西安交通大学，加州大学伯克利分校博士后，从事太阳能光电催化能源转化研究。学位论文获“全国百篇优秀博士学位论文”，入选中组部“万人计划”青年拔尖人才和教育部“青年长江”；获陕西省教学教育成果特等奖、陕西省科学技术一等奖和国家自然科学二等奖。在Chem Rev, Nature Photonics, Adv Mater等期刊发表SCI论文100余篇，引用10000余次。担任Chinese Chemical Letters青年编委和Science Bulletin执行编委。。