Artificial Plants II

Some time ago, I wrote about the idea of using artificial plants, machines that would strip the carbon from carbon dioxide in closd areas. What if I took this idea one step further, and have complete photosynthesis? The artificial plant would use energy to use carbon dioxide and water into glucose and oxygen. It would then dispense the glucose into a small container for later collection. The energy would not need to be solar, as is for natural plants. Being a machine and not an organism, it would not suffer disease, die when the water supply runs out, or rot. It would just be, sustaining animal life whenever it could. This and a large amount of energy could sustain civilizations to flourish in places where it is currently impossible, like the depths of the ocean, underground, or in space. However, it would also need to add nitrogen from the air to the glucose to make basic proteins, because animals can't live on sugar alone.