This book presents an updated account on the technique of artificial photosynthesis. Photosynthesis is one of the most vital processes on Earth, and is a scientific field that is essentially interdisciplinary, with various research groups analyzing it. By carefully studying photosynthesis, we can formulate novel strategies and apply them for use in artificial photosynthesis, a research field attempting to mirror the natural process of photosynthesis. The aim of artificial photosynthesis is to consume the energy of the sun to form various useful products or high-energy chemicals for energy production. This book is targeted at offering important and applicable aspects of artificial photosynthesis through the contributions made by various experts.