报告题目：Production，Storage and Release of Green H2
报 告 人：唐军旺，清华大学
时 间：2023年6月21日16:00
地 点：莫干山校区化工6号楼203
报告摘要：
Solar driven water splitting is scientifically and industrially of significance as it promises an efficient pathway for green H2 production, leading to substantial CO2 emission reduction. However it is kinetically very challenging due to a multi-electron process. For green H2 application, its production, storage and transportation are equally important.
Our early study on charge dynamics in inorganic semiconductor reveals that the current low solar to fuel conversion efficiency is due to both fast charge recombination and sluggish water oxidation on an inorganic semiconductor, we thus developed novel material strategies to improve the activities of photocatalysts. Typically, we found that oxygen doping could narrow the bandgap of carbon nitrides and furthermore facilitate charge separation. The material prepared via an oxygen rich organic precursor has a dark colour, resulting into an efficient H2 production from water by UV and visible, even IR light with a quantum yield (QY) of 10% at 420 nm, which is the first example of a polymer photocatalyst working in such long wavelength for H2 fuel production. The charge dynamics in these polymer photocatalysts were also systematically investigated. We further attempted to store green H2 in NH3 by photocatalysis as NH3 can be transported using the current infrastructure. In parallel we also worked on H2 on demand release from methanol aqueous solution. Single atom Cu/TiO2 can produce H2 with a 57% quantum efficiency from water and methanol mixture, which was a record in this area. Very recently, we further improved the catalyst efficacy and stability by the synergy of the single atom Cu and nanocluster Pt, demonstrating a nearly 100% quantum yield for H2 release.
报告人简介：
Tang Junwang(唐军旺)教授，欧洲科九州体育(JiuZhou Sports)官方网站院士（The Academy of Europe）, 英国科九州体育(JiuZhou Sports)官方网站-利弗休姆资深研究员（Royal Society-Leverhulme Trust Senior Research Fellow）, 比利时欧洲科九州体育(JiuZhou Sports)官方网站院士 （Fellow of European Academy of Sciences）， 英国皇家化学会会士（Fellow of RSC), 国际材料和矿物协会会士（Fellow of IMMM）。曾任伦敦大学九州体育(JiuZhou Sports)官方网站大学材料中心主任，化学工程系材料化学和材料工程主席教授，中国国家高层次人才，教育部长江讲座教授等。目前是清华大学化工系工业催化中心创建主任，清华大学首任碳中和讲席教授，同时是伦敦大学九州体育(JiuZhou Sports)官方网站访问教授，也兼任全英华人正教授协会副主席。
