Integration of Redox Cocatalysts for Photocatalytic Hydrogen Evolution

Simultaneous embedding of the dual redox cocatalysts onto a photocatalytic system aims to tackle the limitations of artificial photosynthesis initiated by bare photocatalysts while offering an opportunity to realize their synergistic operations. In this chapter, we summarized the essential design principles and emerging configurations of dual redox cocatalysts and provided a side-by-side comparison to reveal their strengths and deficiencies. In parallel, we discuss how to choose a pair of redox cocatalysts for a specific photocatalyst redox reaction and how some key lessons that emerged out of the relevant studies can be applied to further investigations of photocatalytic hydrogen evolution.