搜索结果: 1-8 共查到“国际动态 光化学”相关记录8条 . 查询时间(2.878 秒)
英国研发光化学太空氧气发生器
英国 光化学 太空氧气 发生器
2024/1/15
为解决当前国际空间站上氧气发生器组件（OGA）和二氧化碳还原组件低效、易老化发生故障等问题，由英国华威大学科研人员参与的研究测试了光电化学装置（PEC），整合了光吸收、电荷分离、转移和催化的功能，使其能够在微重力环境下以陆地装置的效率生产氢气，并能将水分解的温度降到更低。在此之前，PEC用于光辅助方式从二氧化碳生产氢气和碳基燃料。研究发现，月球辐照度下的PEC水分解装置（串联装置>20 mA cm...
光催化技术可实现阳光照射双氧水产氢
光催化技术 可实现 阳光照射 双氧水产氢
2020/8/6
日本大阪大学的一个研究小组开发出一种新的光催化技术，可在阳光的照射下，利用磷酸（H3PO4）和无金属粉末催化剂，通过H2O2水溶液（双氧水）生成氢气（H2）。研究小组发现，由于催化剂无金属，H2O2不会分解，且H2O2和H3PO4还会通过氢键形成稳定的络合物，能抑制H2O2还原，并促进H+还原。因此将H3PO4和无金属粉末催化剂加入H2O2水溶液中，照射太阳光（可见光）可以生成H2。H3PO4长期...
近日，美国田纳西大学等科研机构的研究人员在Nature Plants上发表了题为“Physiological and evolutionary implications of tetrameric photosystem I in cyanobacteria”的文章，对蓝藻四聚体光系统Ⅰ的生理和进化意义进行了深入研究。光合作用可以将光能转换成化学能。光系统Ⅰ（Photosystem Ⅰ，PSI）和...
Raman microspectroscopy is a laboratory technique used to produce molecular fingerprints of materials and biological specimens. However, to date, fluorescence has interfered with effective application...
Setting the gold standard
Setting gold standard
2016/7/15
A team of University of Florida researchers has figured out how gold can be used in crystals grown by light to create nanoparticles, a discovery that has major implications for industry and cancer tre...
Nanotubes are beacons in cancer-imaging technique
Nanotubes beacons cancer-imaging technique
2016/5/31
Bathing a patient in LED light may someday offer a new way to locate tumors, according to Rice University researchers.The spectral triangulation system developed by Rice chemist Bruce Weisman and his ...
Proven one-step process converts CO2 and water directly into liquid hydrocarbon fuels（图）
converts CO2 water directly liquid hydrocarbon fuels
2016/3/2
A team of University of Texas at Arlington chemists and engineers have proven that concentrated light, heat and high pressures can drive the one-step conversion of carbon dioxide and water directly in...
Robert Gordon University hosts international photochemistry conference
semiconductor photochemistry
2007/3/21
19-Mar-2007，RGU is set to host a major international conference on semiconductor photochemistry (SP-2) during July this year.