Petersen Malte, Bauschulte Jonathan, Talledo Savannah, Hotzel Konrad, Wark Michael, Peneva Kalina, Bernhard Stefan, Wilke Timm
Institute of Chemistry, Chemistry Education, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany.
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States.
J Chem Educ. 2025 Jun 3;102(7):2912-2919. doi: 10.1021/acs.jchemed.5c00114. eCollection 2025 Jul 8.
Photochemical reactions are constantly present in our everyday lives and play an increasingly important role in our society. One relevant aspect for the future is the conversion of light energy into chemical energy to produce hydrogen. This process not only allows teachers to address the social dimension of hydrogen as an energy carrier but also enables relevant school topics such as photochemistry, catalysis, nanomaterials, energy transfer, and redox reactions to be taught. In the series of experiments presented, the photocatalyst polymeric carbon nitrides can be synthesized in a self-build €8 low-cost moka muffle furnace. These photocatalysts can produce detectable amounts of hydrogen within 15 min under UV light in a system with EDTA as an electron donor and platinum as a co-catalyst. Adding the photosensitizer Proflavin, the process is also possible with visible light. To enhance the experiments in school, a sensitive and inexpensive detection method was developed. A hydrogen-sensitive film can be produced and enables the detection of small amounts of hydrogen in a classroom.
光化学反应在我们的日常生活中无处不在，并在我们的社会中发挥着越来越重要的作用。未来一个相关的方面是将光能转化为化学能以产生氢气。这个过程不仅能让教师讲授氢气作为能量载体的社会层面知识，还能使光化学、催化、纳米材料、能量转移和氧化还原反应等相关学校课题得以教授。在所展示的一系列实验中，光催化剂聚合氮化碳可以在自行搭建的造价8欧元的低成本摩卡马弗炉中合成。这些光催化剂在以乙二胺四乙酸作为电子供体、铂作为助催化剂的体系中，在紫外光下15分钟内就能产生可检测量的氢气。添加光敏剂硫酸原黄素后，在可见光下该过程也可行。为了在学校加强这些实验，开发了一种灵敏且廉价的检测方法。可以制作一种氢敏膜，能够在教室里检测少量氢气。
