Complex sentence: The conversion of solar energy into hydrogen via a water-splitting process assisted by photosemiconductor catalysts is one of the most promising technologies for future development because large quantities of hydrogen can potentially be generated in an ecologically sound method.
Split into simpler sentences: The conversion of solar energy into hydrogen via a water-splitting process assisted by photosemiconductor catalysts is one of the most promising technologies for future development. This process gives large quantities of hydrogen the potential to be generated in an ecologically sound method.