H2　and　O2　evolutions　occur　simultaneously　for　conventional　particulate　photocatalytic　overall　water　splitting　(PPOWS),　leading　to　a　significant　backward　reaction　and　the　formation　of　an　explosive　H2/O2　gas　mixture.　This　is　an　issue　that　must　be　addressed　prior　to　industrialization　of　PPOWS.　Here,　a　convenient,　cost-effective,　and　scalable　concept　is　introduced　to　uncouple　hydrogen　and　oxygen　production　for　PPOWS.　Based　on　this　idea,　a　three-component　photocatalyst,　Co(5　%)-HPCN/(rGO/Pt),　is　constructed,　consisting　of　a　photoresponsive　chip　(HPCN),　a　H2　evolution　cocatalyst　(rGO/Pt),　and　a　cobalt　complex　capable　of　reversibly　binding　O2　(Co),　to　achieve　the　decoupling　of　PPOWS　under　alternating　UV　and　visible　light　irradiations.　The　asynchronous　O2　and　H2　evolution　strategy　have　considerable　flexibility　regarding　the　photocatalyst　structure　and　light　sources　suitable　for　PPOWS.