College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China.
Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education, China Three Gorges University, Yichang, 443002, P. R. China.
ChemSusChem. 2023 Jun 22;16(12):e202300015. doi: 10.1002/cssc.202300015. Epub 2023 Apr 19.
With a view to using solar energy, the exploitation of near-infrared (NIR) light, which constitutes about 50 % of solar energy, in photocatalytic H O synthesis remains challenging. In this study, resorcinol-formaldehyde (RF), which has a relatively low bandgap and high conductivity, is introduced for photothermal catalytic generation of H O under ambient conditions. Owing to the promoted surface charge transfer rate under high temperature, the photosynthetic yield reaches roughly 2000 μm within 40 min under 400 mW cm irradiation with a solar-to-chemical conversion (SCC) efficiency of up to 0.19 % at 338 K under ambient conditions, exceeding the rate of photocatalysis with a cooling system by a factor of about 2.5. Notably, the H O produced by RF during photothermal process was formed via a two-channel pathway, leading to the overall promotion of H O formation. The resultant H O can be applied in situ for pollutant removal. This work offers a sustainable and economical route for the efficient formation of H O .
为了利用太阳能，近红外（NIR）光的开发仍然具有挑战性，因为它构成了太阳能的约 50%。在这项研究中，间苯二酚-甲醛（RF）由于具有相对较低的带隙和较高的电导率，被引入到光热催化环境条件下 H O 的合成中。由于在高温下促进了表面电荷转移速率，在 400 mW·cm 的光照下，40 分钟内的光合成产率约为 2000 μm，在 338 K 下的太阳能-化学转化（SCC）效率高达 0.19%，比具有冷却系统的光催化效率提高了约 2.5 倍。值得注意的是，RF 在光热过程中产生的 H O 通过双通道途径形成，从而整体促进了 H O 的形成。所得的 H O 可以就地用于污染物去除。这项工作为高效形成 H O 提供了一种可持续和经济的途径。
