Moustakas Nikolaos G, Klahn Marcus, Mei Bastian T, Pougin Anna, Dilla Martin, Peppel Tim, Ristig Simon, Strunk Jennifer
Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Str. 29a, 18059 Rostock, Germany.
Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
HardwareX. 2023 Jun 28;15:e00448. doi: 10.1016/j.ohx.2023.e00448. eCollection 2023 Sep.
Reactions between a gas phase and a solid material are of high importance in the study of alternative ways for energy conversion utilizing otherwise useless carbon dioxide (CO). The photocatalytic CO reduction to hydrocarbon fuels like e.g., methane (CH) is such a potential candidate process converting solar light into molecular bonds. In this work, the design, construction, and operation of a high-purity gas-solid photoreactor is described. The design aims at eliminating any unwanted carbon-containing impurities and leak points, ensuring the collection of reliable and reproducible data in photocatalytic CO reduction measurements. Apart from the hardware design, a detailed experimental procedure including gas analysis is presented, allowing newcomers in the field of gas-solid CO reduction to learn the essential basics and valuable tricks. By performing extensive blank measurements (with/without sample and/or light) the true performance of photocatalytic materials can be monitored, leading to the identification of trends and the proposal of possible mechanisms in CO photoreduction. The reproducibility of measurements between different versions of the here presented reactor on the ppm level is evidenced.
气相与固体材料之间的反应在研究利用原本无用的二氧化碳（CO）进行能量转换的替代方法中具有高度重要性。光催化将CO还原为烃类燃料，例如甲烷（CH₄），就是这样一个将太阳光转化为分子键的潜在候选过程。在这项工作中，描述了一种高纯度气固光反应器的设计、构建和操作。该设计旨在消除任何不需要的含碳杂质和泄漏点，确保在光催化CO还原测量中收集可靠且可重复的数据。除了硬件设计外，还介绍了包括气体分析在内的详细实验程序，使气固CO还原领域的新手能够学习基本要点和宝贵技巧。通过进行大量的空白测量（有/无样品和/或光照），可以监测光催化材料的真实性能，从而确定趋势并提出CO光还原中可能的机制。本文所展示的不同版本反应器之间在ppm水平上测量的可重复性得到了证明。
