A two-pronged strategy to enhance visible-light-driven overall water splitting via visible-to-ultraviolet upconversion coupling with hydrogen-oxygen recombination inhibition | |
Gao W(高薇)1,2; Zhang WY(张文妍)1,2,3; Lu GX(吕功煊)1 | |
刊名 | Applied Catalysis B: Environmental |
2017 | |
卷号 | 212页码:23-31 |
关键词 | Visible-to-ultraviolet upconversion Pr3+-Y2SiO5 CaTiO3 catalyst Inhibition of hydrogen and oxygen recombination Overall water splitting Visible light irradiation |
ISSN号 | 0926-3373 |
通讯作者 | 吕功煊 |
英文摘要 | Visible-light-driven overall splitting water is a potential and sustainable approach for hydrogen generation. Although many photocatalysts have been reported to be active for this reaction, the efficiency of overall splitting water is still quite low. In this work, a two-pronged strategy is adopted to overcome two key restrictions on visible-light-driven photocatalytic overall water splitting by taking advantages of visible-to-ultraviolet upconversion (UC) effect as well as inhibiting hydrogen-oxygen recombination reaction over the photocatalyst. In order to realize that purpose, a composite photocatalyst with high stability was designed by assembling three components consisting of visible-to-ultraviolet UC Pr3+-Y2SiO5, UV-responsive semiconductor photocatalyst CaTiO3 and perfluorodecalin as an oxygen transfer regent. By the first strategy, the visible-to-ultraviolet UC unit is capable of converting visible irradiation to UV light emission, which effectively excites UV-responsive photocatalyst CaTiO3. The photocatalytic activity has been raised up to 200% by regulating the amount of visible-to-ultraviolet UC Pr3+-Y2SiO5 in the designed composite photocatalyst Pr3+-Y2SiO5/CaTiO3. The photocatalyst exhibited high photochemical stability and catalytic stability in four recycle reactions. By the second strategy, hydrogen and oxygen recombination on photocatalyst surface has been effectively inhibited by an oxygen transfer reagent FDC to capture and take away newly generated oxygen from catalyst surface. This two-pronged strategy is not only convenient and efficient, but exhibits potential versatility for the most stable UV-responsive semiconductor photocatalysts to realize overall split water by visible light irradiation. |
学科主题 | 物理化学与绿色催化 |
收录类别 | SCI |
资助信息 | the NSF of China (21433007;21673262);Natural Science Foundation of Jiangsu Province (BK20130095);Postdoctoral Science Foundation of China (146819) |
语种 | 英语 |
WOS记录号 | WOS:000401134200004 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/21896] |
专题 | 兰州化学物理研究所_OSSO国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 10080, Peoples R China 3.Jinling Inst Technol, Coll Mat Engn, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Gao W,Zhang WY,Lu GX. A two-pronged strategy to enhance visible-light-driven overall water splitting via visible-to-ultraviolet upconversion coupling with hydrogen-oxygen recombination inhibition[J]. Applied Catalysis B: Environmental,2017,212:23-31. |
APA | Gao W,Zhang WY,&Lu GX.(2017).A two-pronged strategy to enhance visible-light-driven overall water splitting via visible-to-ultraviolet upconversion coupling with hydrogen-oxygen recombination inhibition.Applied Catalysis B: Environmental,212,23-31. |
MLA | Gao W,et al."A two-pronged strategy to enhance visible-light-driven overall water splitting via visible-to-ultraviolet upconversion coupling with hydrogen-oxygen recombination inhibition".Applied Catalysis B: Environmental 212(2017):23-31. |
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