中国科学院福建物质结构研究所王要兵团队开发出了具有分子仿生类囊体的人工光合细胞。相关研究成果于2024年9月17日发表于国际一流学术期刊《德国应用化学》。

通过模拟叶绿体的光合系统构建太阳能到化学物质的转换系统，对高效利用太阳能具有巨大前景。

该文中，研究人员开发了一种基于分子仿生类囊体（CoTPP-FePy）的人工光合细胞（APC），在低驱动电压（1.1V）和中性条件（pH≈7）下将水分解为氢气和氧气（H₂和O₂）。CoTP-FePy可以通过耦合光收集、光催化和电子/能量存储（FeIII/FeII-Py）来模拟类囊体中的光反应以产生O₂。

随后，采用膜电极组件（MEA）模拟暗反应，其中光反应产生的质子、电子和能量可以驱动H₂的产生过程。通过光和暗反应的时间和空间耦合，产生的APC实现了3.1%的太阳能转换效率，超过了自然光合系统，并展示了人工光合作用的潜力。

附：英文原文

Title: Artificial Photosynthetic Cell with Molecular Biomimetic Thylakoid

Author: Enbo Zhou, Shichen Yan, Xiang Zhang, Baloch Ur Rehman Ateeq, Yangdan Hui, Futong Wang, Lei Jiao, Jiafang Xie, Daqiang Yuan, Yaobing Wang

Issue&Volume: 2024-09-17

Abstract: The construction of solar-to-chemical conversion system by mimicking the photosynthetic network of the chloroplast holds great promise on efficient solar energy utilization. We developed an artificial photosynthetic cell (APC) based on molecular biomimetic thylakoid (CoTPP-FePy) to split water into hydrogen and oxygen (H2 and O2) at low driving voltage (1.1 V) and neutral condition (pH≈7). The CoTPP-FePy can emulate the light reaction in thylakoids to produce O2 by coupling light harvesting, photocatalysis, and electron/energy storage (FeIII/FeII-Py). Subsequently, a membrane electrode assembly (MEA) were employed to simulate the dark reaction, wherein the proton, electron and energy generated by the light reaction can drive the H2 producing process. By a temporally and spatially coupling of the light and dark reactions, the resulting APC achieved a solar conversion efficiency of 3.1%, exceeding that of natural photosynthetic systems and demonstrating the potential of artificial photosynthesis.

DOI: 10.1002/anie.202416289

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202416289