期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 280, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2020.119385
关键词
Bidentately bridging; Dye sensitization; Eosin Y; Hydrogen; Metal-organic frameworks (MOFs)
资金
- National Natural Science Foundation of China [51888103, 51906197, 51302212, 51925602]
- Fundamental Research Funds for the Central Universities
- Natural Science Foundation of Jiangsu Province [BK20190220]
- Natural Science Foundation of Shaanxi Province [2020JQ-040]
- China Postdoctoral Science Foundation [2017M613122, 2019M663466, 2020M673386, 2020T130503]
This study developed a solvothermal method to synthesize EY-sensitized UiO-66-NH2, enhancing the connection between EY and UiO-66-NH2, improving the transfer rate of photogenerated electrons, and significantly increasing the H-2 evolution rate and apparent quantum efficiency.
The coupling modes of dyes with corresponding supports play key roles in the performance of dye-sensitized heterogeneous photocatalytic systems. Herein, a solvothermal method was developed to synthesize a typical kind of dye-sensitized metal-organic frameworks (MOFs), Eosin Y (EY)-sensitized UiO-66-NH2, in which EY was anchored on UiO-66-NH2 via the bidentately bridging configuration of Zn <- O-C=O -> Zr. Such a coupling mode of chemical bonding strengthened the linking between EY and UiO-66-NH2, increased the content of EY on UiO-66-NH2, and facilitated the transfer of photogenerated electrons from EY to UiO-66-NH2. Correspondingly, the H-2 evolution rate of EY-sensitized UiO-66-NH2 via solvothermal treatment (2760 mu mol g(-1) h(-1)) was 8 times as that via room-temperature sensitization, with apparent quantum efficiency (AQE) -17.6 % at 500 nm. The as-obtained AQE and excellent stability performance exceeds most dye-sensitized photocatalytic systems for H-2 production. This work provides valuable information about developing dye-based or MOFs-based materials for efficient photocatalytic application.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据