Spin-selection in L-chiral Ag doped WS₂ nanoflower for photocatalysis

In this study, we synthesized a novel heterostructure comprising two-dimensional tungsten sulfide nanoflowers and chiral silver nanoparticles. Leveraging the chiral-induced spin selection (CISS) effect, our WS₂@L-His/Ag(chiral) system achieved a remarkable 77% enhancement in photocatalytic degradation efficiency over the WS₂@Ag(achiral) counterpart. The chiral nanostructures selectively facilitate the transport of electrons with defined spin orientations, thereby suppressing the recombination of electrons and holes and augmenting the generation of hydroxyl radicals, which significantly boosts degradation efficiency. Our findings underscore the potential of electron spin manipulation and herald novel avenues for chiral material applications in spin-dependent photoelectric chemical processes.