Iron-containing　HZSM-5　zeolite,　which　was　shown　as　an　efficient　and　stable　photo-catalyst　for　photo　catalytic　CO2　reduction　in　our　previous　research,　was　chosen　to　prepare　a　Ti-HZSM-5　hybrid　via　sol-gel　method.　The　characterizations　by　XRD,　UV-vis　DRS,　Raman,　and　XPS　demonstrate　that　Ti　species　highly　dispersed　as　nanoclusters　or　mono-sites　on　the　HZSM-5　zeolite　surface.　Compared　with　the　common　TiO2-HZSM-5　composite　sample,　the　as-prepared　Ti-HZSM-5　sample　exhibits　an　enhanced　activity　for　photocatalytic　CO2　reduction　due　to　higher　concentration　of　excited　state　electrons　and　faster　electron　transfer　rate.　The　Ti-HZSM-5　sample　with　0.99　wt%　of　Ti　content　is　observed　to　have　the　highest　rate　for　the　photocatalytic　CO2　reduction.　And　the　characterization　results　of　photocurrent　and　ESR　reveal　that　Ti　species　and　Fe　species　work　synergistically　upon　UV-light　irradiation,　therefore,　we　propose　a　possible　reaction　mechanism　of　CO2　photoreduction　on　Ti-HZSM-5.　This　work　highlights　the　promising　prospect　of　hybridizing　of　the　Fe-O　species　in　zeolite　with　semiconductors　for　enhanced　photocatalytic　performance.　(C)　2016　Elsevier　B.V.　All　rights　reserved.