A　swift　and　efficient　approach　to　converting　organic　dye　effluents　into　fresh　water　could　be　of　substantial　benefit.　In　this　study,　we　presented　facile　hydrothermal　synthesis　of　K1.33Mn8O16　nanowires　in　ammonium　fluoride　(NH4F)　aqueous　solution.　The　crystallization　process　of　K1.33Mn8O16　nanowires　was　investigated.　The　as-obtained　K1.33Mn8O16　nanowires　were　used　for　swift　adsorptive　removal　of　Congo　red　from　aqueous　solution　without　adjusting　pH　value　at　room　temperature.　Adsorption　kinetic　experimental　data　are　well　described　by　pseudo-second-order　rate　kinetic　model,　and　the　adsorption　isotherm　fits　Langmuir　isotherm　model.　The　present　investigation　provides　an　efficient　approach　to　designing　and　fabricating　manganese-based　nanomaterials　for　environmental　remediation.