Hydrogen is a sustainable green energy, but most of it is “locked” in water molecules on earth. To extract hydrogen from water, electrolysis using electricity from solar energy is used to split water molecules into hydrogen and oxygen, but the efficiency is low and is not cost-effective.
However, a research team led by Professor Zheng Xiao Guo and Professor David Lee Phillips from the HKU-CAS Joint Laboratory on New Materials and the Department of Chemistry of The University of Hong Kong (HKU) has discovered a photocatalytic process for splitting water, leading to efficient hydrogen generation using visible solar light.
