报告人：西安交通大学 沈少华 教授
报告题目：Polymeric Carbon Nitride for Photocatalytic Overall Water Splitting
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-C3N4 based nanostructures and heterostructures have well rationally designed for efficient photocatalytic overall water splitting, with some recent progresses in our group will be introduced.
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，从事太阳能光电催化能源转化研究，博士毕业于西安交通大学，分别于2008-2009年和2011-2012年赴美国劳伦斯伯克利国家实验室和加州大学伯克利分校进行访问学生和博士后研究。学位论文获“全国百篇优秀博士学位论文”，入选教育部“新世纪优秀人才”、中组部“万人计划”青年拔尖人才和教育部“青年长江”；获陕西省本科（研究生）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, Energy Environ Sci, Nano Lett等期刊发表SCI论文100余篇，引用8000余次。担任Chinese Chemical Letters青年编委和Science Bulletin执行编委，及加拿大、澳大利亚等国基金评委。