The cover picture shows the different hydrogen production activities caused by the type of the reactor. A fully noble-metal-free system based on a heteroleptic Cu(I) photosensitizer and an iron carbonyl catalyst was chosen as a model to study the impact of the reactor design on the photocatalytic H₂ production. Driven by the need to continuously remove H₂ on a technical scale a traditional batch reactor was compared to a semi-batch reactor. This semi-batch photoreactor is characterized by a continuously perfused gas phase in combination with in situ gas chromatography, which allowed for the time resolved analysis of all gases formed. For all further results see the Full Paper of D. Ziegenbalg and M. Karnahl et al. (DOI: 10.1002/slct.201800289). The cover was designed by the help of Dr. S. Tschierlei (Ulm University).

封面图片显示了由反应器类型引起的不同的制氢活动。选择基于杂合性Cu（I）光敏剂和羰基铁催化剂的完全不含贵金属的系统作为模型，以研究反应器设计对光催化H ₂生产的影响。由于需要以工业规模连续除去H ₂，因此将传统的间歇式反应器与半间歇式反应器进行了比较。这种半间歇式光反应器的特征是连续灌注的气相结合原位气相色谱法，可以对所有形成的气体进行时间分辨分析。有关所有其他结果的信息，请参见D. Ziegenbalg和M. Karnahl等人的论文全文。（DOI：10.1002 / slct.201800289）。封面是在S. Tschierlei博士（乌尔姆大学）的帮助下设计的。