報告題目：Photocatalytic Splitting of Water into Molecular Hydrogen
and Oxygen
報 告 人 ：佟振合教授
報告時間：2017年11月14日（周二）下午16:00
報告地點(diǎn)：化學(xué)樓二樓一號會議室
邀 請 人 ：解孝林教授、王鋒副教授
報告人簡介：
佟振合，有機(jī)化學(xué)家、中國科學(xué)院院士。1963年畢業(yè)于中國科技大學(xué)化學(xué)系，1983年獲美國哥倫比亞大學(xué)博士學(xué)位，1999年當(dāng)選為中國科學(xué)院院士。現(xiàn)為中國科學(xué)院理化技術(shù)研究所研究員、學(xué)術(shù)委員會主任、中國化學(xué)會光化學(xué)委員會主任、亞洲光化學(xué)會理事以及《Photochem. and Photobiol.》、《J. Photochem. Photobiol. C: Photochem. Rev.》、《J. Phys. Org. Chem.》等刊物的國際編委。多年從事超分子體系中的光誘導(dǎo)能量傳遞、電子轉(zhuǎn)移和化學(xué)轉(zhuǎn)換的研究，在微反應(yīng)器控制的光化學(xué)反應(yīng)的選擇性、超分子體系中的電子轉(zhuǎn)移和能量傳遞、光催化分解水制氫、光催化活化惰性化學(xué)鍵等方面進(jìn)行了系統(tǒng)研究，取得一系列創(chuàng)新性成果。已在國內(nèi)外核心刊物Acc. Chem. Res.、J. Am. Chem. Soc.、Angew. Chem. Int. Ed.等發(fā)表論文四百余篇。1992年榮獲中國科學(xué)院自然科學(xué)獎二等獎（第一完成人），2003年榮獲何梁何利基金科學(xué)與技術(shù)進(jìn)步獎，2005年榮獲國家自然科學(xué)獎二等獎（第一完成人），2008年榮獲亞洲及大洋洲光化學(xué)學(xué)會成就獎，2010年榮獲中國化學(xué)會-中國石油化工股份有限公司化學(xué)貢獻(xiàn)獎。
報告內(nèi)容簡介：
One of the best solutions for meeting future energy demands is the conversion of water into hydrogen fuel using solar energy. The splitting of water into molecular hydrogen (H2) and oxygen (O2) using light involves two half-reactions: the reduction of protons to H2 and the oxidation of water to O2. To take advantage of the full range of the solar spectrum, researchers have extensively investigated artificial photosynthesis systems consisting of two photosensitizers and two catalysts with a Z-configuration: one photosensitizer-catalyst pair for H2 evolution and the other for O2 evolution. This report reviews advances our laboratory has made in the development of new systems for photocatalytic splitting of water that use earth-abundant materials and is both efficient and durable. We constructed several assemblies of CdTe and CdSe QDs as photosensitizers with [FeFe]-H2ase mimics as catalysts. These assemblies produced H2 in aqueous solutions photocatalytically and efficiently, with turnover numbers (TONs) up to hundreds of thousands. Assemblies of 3-mercaptopropionic acid (MPA)-capped CdTe Qds with Co2+ ions formed Coh-CdTe hollow nanospheres, and (MPA)-capped-CdSe Qds with Ni+ ions produced Nih-CdSe/CdS core/shell hybrid in situ in aqueous solutions upon irradiation. The resulting photocatalytic systems proved robust for H2 evolution. These systems showed excellent activity and impressive durability in the photocatalytic reaction, suggesting that they can serve as a valuable part of an overall water splitting system. We also constructed several systems for photocatalytic oxidation of water to O2. Overall water splitting was achieved in our laboratory.
