Biomass-templated　biomimetic　mineralization　has　recently　emerged　as　a　readily　scalable　method　for　the　fabrication　of　mesoporous　metal　oxides　due　to　the　wide　availability　of　the　templates　and　their　delicate　hierarchical　porous　nanostructures.　However,　the　selective　ionic　interactions　of　biomass-derived　templates　limit　the　possible　chemical　compositions　of　the　desired　products.　Polyphenols　can　potentially　introduce　more　general　ionic　adsorption　to　biomass-derived　templates　through　the　self-assembly　of　metal-phenolic　networks　(MPNs),　leading　to　successful　synthesis　of　a　much　broader　range　of　mesoporous　materials.　As　an　illustration　of　this　strategy,　we　designed　a　novel　method　for　the　fabrication　of　hierarchical　mesoporous　bimetallic　hybrid　nanocatalysts　through　calcination　of　biomass　collagen-templated　bimetallic　MPNs.　The　resultant　Bi/Ti　bimetallic　hybrid　nanocatalysts　inherited　the　hierarchical　mesostructures　of　their　collagen　templates　and　showed　excellent　photocatalytic　performance　in　the　visible-light　region　(420-700　nm),　which　was　consistent　with　the　theoretical　calculations　using　the　first-principles　density　function　theory.　This　simple　and　low-cost　MPN-based　approach　possibly　provides　a　universal　platform　for　stable　mineralization　of　biomass　templates,　paving　the　avenue　towards　a　wide　range　of　potential　applications　in　environmental-friendly　synthesis　of　mesoporous　metal　oxide　materials.