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原始链接: https://news.ycombinator.com/item?id=43356068

Hacker News上的一篇讨论围绕着人工光合作用用于有机合成的文章展开。一位用户指出,与太阳能电池板(20-47%)相比,自然光合作用的效率很低(1-2%)。他们认为,在这个领域模仿自然可能不会有成效,因为我们在能源生产方面已经超越了自然。 反驳意见强调,这项研究旨在复制植物的生物制造过程,利用太阳能和雨水在现场合成所需的化合物。如果成功,先前在提高植物效率方面的进展在这个领域也大有希望。虽然目前的太阳能电池板具有更高的能量效率,但植物具有自给自足、自我修复、自然循环以及利用 readily available materials(现成材料)现场生长的优势。制造生命组成部分的能力也是一个关键的区别。该合成过程的潜力可以通过其在合成特非那定(一种抗组胺药)中的应用来体现。

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  • 原文
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    Artificial photosynthesis directed toward organic synthesis (nature.com)
    46 points by PaulHoule 10 hours ago | hide | past | favorite | 7 comments










    Notable that 'natural' photosynthesis only has a 1% efficiency at producing biomass. The best plants get 2%.

    That's really low compared to standard solar panels at 20% efficiency, or expensive lab solar panels at 47% (output: electricity).

    Basically, we have already beaten nature. Aiming to copy nature at this game is probably fruitless.



    If we’re talking strictly about producing energy, yes, but this isn’t a method for more efficient or desirable solar energy production. This is an attempt to recreate the biomanufacturing processes of plants, so that we can use solar energy and rain to synthesise desirable organic compounds in situ. If we can do that, then it’s very exciting that we’ve blown plant efficiency out of the water before, because it means we should be able to do it in this domain too.


    It depends, the efficiency isn't the only the parameter. Plants are beloved and self sustained, there are plants that have been alive for thousands of years. Even when the plants die, they can be useful and are naturally recycled. Also, they are able to grow to enormous sizes with the materials available on site, and although it can create challenges plants are desired in most environments.

    Our advanced high efficiency devices are cool but the ultimate solar devices can be something with many characteristics of the plants.



    Except nature’s framework comes with ability to manufacture and self maintain with infrastructure requirements that literally fall from the sky(rain). Given most of the cost of solar panels is installation and maintenance there are still places for photosynthesis.


    > Basically, we have already beaten nature

    I don't understand the logic. Can you build life building blocks with solar panels? I don't think so. So your metric is irrelevant.



    "The synthetic potential of the present transformation is highlighted by a short synthesis of terfenadine, a pharmaceutically important anti-histamine compound."

    It was all fun and games until the Viagra weed got loose.



    Part of the forbidden eleven.

    https://anathem.dlma.com/data/Eleven.html







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