持续的太阳H2从水中的thiazole[5,4-d] thiazole桥接共价有机框架和酸盐集群的演变
Bishnu P Biswal1, Hugo A Vignolo-González1,2, Tanmay Banerjee1
1Max Planck Institute for Solid State Research , Heisenbergstraße 1 , 70569 Stuttgart , Germany.
Journal of the American Chemical Society
|July 2, 2019
概括
这项研究提出了一种低成本,高效的太阳能生产系统,使用一种新型的共价有机框架 (COF) 和大量存在于地球上的联合催化剂. 这种可持续的方法避免了昂贵的,为经济的绿色产生铺平了道路.
科学领域:
- 材料科学
- 可再生能源
- 催化剂
背景情况:
- 由于它们的可调性特性,共价有机框架 (COF) 对太阳能 (H2) 演变具有前景.
- 由于依赖昂贵的联合催化剂,这阻碍了太阳能H2生产的经济可行性.
- 开发丰富且具有成本效益的光催化系统对于可持续的能源解决方案至关重要.
研究的目的:
- 开发一个高效,低成本和可持续的光催化系统,用于太阳能的进化.
- 使用一种新型的醇[5,4-d]醇结合COF (TpDTz) 作为光敏感剂和土壤丰富的联合催化剂.
- 研究开发系统的反应机制和长期稳定性.
主要方法:
- 作为光吸收剂合成与 thiazole [5,4-d] thiazole 相关的 COF (TpDTz).
- 在水中作为辅助催化剂的土壤丰富的-酸六合体集群的现场组装.
- 使用三甲胺 (TEoA) 作为光催化演变的牺牲电子供体.
- 采用连续流系统,以准确,非侵入性地监测的生产速度.
主要成果:
- TpDTz COF 呈现出高晶度,多孔性,光化学稳定性和光吸收性.
- 该系统实现了941μmolh-1g-1的高演变率和转换率 (TONNi) >103.
- 超过70小时的长期光催化运行显示出出色的稳定性和效率.
- 这一性能超过了之前报告的COF敏感系统的降水性能.
结论:
- 一个具有成本效益和效率的太阳能生产全合一光催化系统已成功开发.
- 结合TpDTz COF,使用富含土的辅助催化剂为基于的系统提供了可持续的替代方案.
- 该研究为反应机制提供了宝贵的见解,并强调了基于COF的混合系统在未来太阳能燃料应用中的潜力.
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