叶绿素在光合燃料电池发电中的作用

IF 4.3 Q2 CHEMISTRY, PHYSICAL
Hitoki Semizo, Ichiro Horii, Reoto Ueda, Yusuke Takahashi, Yasumitsu Matsuo, Hinako Kawakami
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引用次数: 0

摘要

通过光合作用产生氢能的光合燃料电池作为下一代清洁能源备受关注。然而,光合燃料电池的功率密度与入射光波长之间的关系虽然是影响光吸收的重要因素,但目前还不清楚。在本研究中,我们测量了光合燃料电池的发电对入射光波长的依赖性,并研究了导致发电的关键分子。结果表明,功率密度在叶绿素吸收光的波长附近达到峰值。这些结果表明,叶绿素吸收光产生的电子成为发电的触发器,就像叶绿素吸收光产生的电子成为光合反应的触发器一样。此外,我们还观察到在520 nm光波长附近的功率密度增强。考虑到在520 nm左右无法观察到叶绿素的吸收,这一结果表明,在光合燃料电池的发电过程中,除了叶绿素之外,还有另一种分子也会导致发电。此外,我们发现利用叶绿素中Mg离子解吸降解的叶绿素素作为光合燃料电池也可以通过光照射产生功率密度。从叶绿素在520nm处的光吸收,功率密度增强来看,光合燃料电池的发电不仅是由叶绿素的光吸收引起的,叶绿素的光吸收对发电也很重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Role of pheophytin in power generation of photosynthetic fuel cells

Role of pheophytin in power generation of photosynthetic fuel cells
Photosynthetic fuel cells, which yield hydrogen energy from photosynthesis, are attracting attention as a next-generation clean energy source. However, the relationship between the power density of photosynthetic fuel cells and the wavelength of incident light has not been made clear despite being an important factor concerning light absorption. In this study, we have measured the dependence of the power generation in photosynthetic fuel cells for the wavelength of incident light and investigated the key molecules that lead to the power generation. It was found that the power density peaks around the wavelength of the light absorption of chlorophyll. These results indicate that the electron generated by the light absorption in chlorophyll becomes the trigger of power generation, the same as the electrons created by the light absorption of chlorophyll become the trigger of the photosynthetic reaction. In addition, we observed the power density enhancement around the light’s wavelength of 520 nm. Considering that the absorption of chlorophyll cannot be observed at around 520 nm, this result indicates that in the power generation of photosynthetic fuel cells, another molecule besides chlorophyll also leads to power generation. Furthermore, we found that Photosynthetic fuel cells using the pheophytin degraded by the desorption of the Mg ion from chlorophyll can also generate power density by light irradiation. From the fact that pheophytin exhibits light absorption at 520 nm, where power density becomes enhanced, the power generation of photosynthetic fuel cells is caused by not only the light absorption of chlorophyll but also the light absorption of pheophytin is also important for the power generation.
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来源期刊
Chemical Physics Impact
Chemical Physics Impact Materials Science-Materials Science (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
65
审稿时长
46 days
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