Research Progress and Prospect of Green Hydrogen Energy and Environmental Issues

Dear Colleagues,

Solar energy utilization has the potential to meet both economic and environmental demands simultaneously. Solar energy was regarded as renewable and clean energy, and it can be converted into valuable fuels and chemical intermediates via catalytic methods. Among them, water splitting to produce hydrogen has the potential to be an effective method to reduce carbon emissions. The main methods for green hydrogen production are the following three: PV electrocatalysis, photocatalysis, and photo-electrocatalysis. Several countries and research groups have devoted themselves to producing green hydrogen via the mentioned strategy. However, limitations restrict its application, which still needs further study. Recently, several innovative methods of water splitting have been invented and implemented. These have been critical for providing a unique opportunity for researchers to present and discuss recent advances in water splitting for green hydrogen production. Furthermore,  green environmental techniques for energy conversion and utilization as well as relative energy and environmental culture and policy have also been suitable since they can be used to determine which hydrogen production method is more economical in either a special temporal or spatial period. Papers addressing these topics are invited for submission to this Special Issue, especially those of a high academic standard focused on optimal water splitting technology. We sincerely hope that the most up-to-date views and outlooks in the field in this Special Issue will advance the research frontier and improve our understanding of water splitting. We expect that these works will promote discussions among established scientists and also benefit the journal readers.

Dr. Zhidong Wei
Dr. Zizhang Guo
Dr. Junying Liu
Dr. Hao Guo
Guest Editors

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• water splitting
• catalytic
• hydrogen
• environmental technique
• energy policy