The　increasing　dangerous　chemical　pollutants　led　by　shipping　accidents　call　for　the　new　pollutant　treatment　strategy.　In　this　work,　a　new　three-component　hybrid　{[(BiI6)I-13]center　dot　2I(3)center　dot(H-BPA)(4)}(n)　(1)　can　be　used　in　dye　degradation　in　seawater.　The　highly　interesting　feature　of　1　lies　in　its　unique　1-D　Z-shape　[(BiI6)I-13](n)(6-)　infinite　chain　constructed　from　the　I　center　dot　center　dot　center　dot　I　contacts　between　mono-nuclear　(BiI6)(3-)　anions　and　I-13(3-)　polyiodide　anions.　Finally,　the　hydrogen　bonds　between　[(BiI6)I-13](n)(6-)　polyanions　and　H-BPA(2+)　cations　contribute　to　the　formation　a　quasi-3-D　network.　Specifically,　1　exhibits　the　wide　absorption　zone　from　ultraviolet　to　visible　regions　and　high　charge-separation　efficiency,　hinting　its　application　in　visible-light　catalysis.　As　expected,　1　represents　photocatalytic　activity　for　the　degradation　of　rhodamine　B　in　seawater　with　degradation　ratio　of　90%,　and　the　photocatalytic　performance　is　stable.　This　work　might　provide　new　photocatalytic　material　for　pollutant　treatment　in　shipping　accidents.