Wächtershäuser's proposal of the autotrophic origin of life theory and subsequent laboratory demonstrations of relevant organic reactions have opened a new gate for the exploration of the origin of life. However, this scenario remains controversial because, at present, it requires a high pressure of CO as a source of carbon and reducing energy, although CO must have been a trace C species on the Hadean Earth. We show that, simulating a geoelectrochemical environment in deep-sea hydrothermal fields, CO production with up to ~40% Faraday efficiency was attainable on CdS in CO₂-saturated NaCl solution at ≤-1 V (versus the standard hydrogen electrode). The threshold potential is readily generated in the H₂-rich, high-temperature, and alkaline hydrothermal vents that were probably widespread on the early komatiitic and basaltic ocean crust. Thus, Wächtershäuser's scenario starting from CO₂ was likely to be realized in the Hadean ocean hydrothermal systems.

中文翻译：

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地球化学一氧化碳的产生：对自养生命起源的影响。

Wächtershäuser提出的自养生命起源理论的提议以及随后有关有机反应的实验室演示为探索生命起源打开了新的大门。但是，这种情况仍然存在争议，因为目前，尽管CO必须是哈代地球上的痕量C物种，但它需要高压的CO作为碳源并降低能量。我们显示，模拟深海热液场中的地球电化学环境，在≤-1V的CO ₂饱和NaCl溶液中（相对于标准氢电极），在CdS上可以达到高达约40％法拉第效率的CO生产。在H _2中容易产生阈值电势富含高温，碱性的热液喷口，可能在早科迈特和玄武岩的地壳上广泛分布。因此，Wächtershäuser从CO ₂开始的情景很可能会在哈德安海洋热液系统中实现。