화학공학소재연구정보센터
Applied Catalysis B: Environmental, Vol.237, 1124-1129, 2018
Photocatalytic hydrogen evolution systems constructed in cross-linked porous protein crystals
Cross-linked hen egg white lysozyme crystals (CL-HEWL) have been employed as supports to construct heterogeneous catalysts for photocatalytic hydrogen (H-2) evolution, where rose bengal (RB) and Pt nanoparticles (PtNPs) acted as a photosensitizer and H-2-evolution catalysts, respectively. Single-crystal X-ray structure analyses of the CL-HEWL immobilizing a precursor for PtNPs suggested that a coordination site of the precursor locates in immediate proximity to potential adsorption sites for RB. The accumulation of the components facilitated photo-induced electron transfer, resulting in efficient H-2 evolution. These results suggest that porous protein crystals are promising platforms to periodically and rationally accumulate catalytic components by using molecular interactions.