A　series　of　Mn-Ce-Co-Ox/PPS　composite　filter　materials　with　different　mass　ratios　were　obtained　by　modifying　the　pristine　polyphenylene　sulfide　(PPS)　filter　material　with　sodium　dodecyl　sulfate　(SDS)　and　then　treated　by　a　redox　precipitation　method.　The　Mn-Ce-Co-Ox/PPS　composite　filter　materials　were　characterized　by　XRD,　FESEM,　TEM　and　XPS;　their　catalytic　performance　in　the　low-temperature　selective　catalytic　reduction　(SCR)　of　NOx　was　then　investigated.　The　results　show　that　the　Mn-Ce-Co-Ox/PPS　composite　filter　materials　obtained　by　the　redox　method　presents　higher　low-temperature　SCR　activity　than　the　Mn-Ce-Co-Ox/PPS-UM　composite　filter　material　fabricated　via　the　ultrasonic　method;　over　the　former　material,　the　NOx　conversion　reaches　86%-100%　at　120-160.　Among　them,　the　1.2Mn-Ce-Co-Ox/PPS　composite　filter　material　displays　the　highest　SCR　activity,　which　is　probably　ascribed　to　the　high　Ce3+/(Ce3++Ce4+)　ratio　and　high　concentration　of　Co;　moreover,　honeycomb-like　MnO2,　Ce2O3,　CeO2,　CoO　and　Co3O4　are　uniformly　distributed　on　the　PPS　filter　material　in　the　weak　crystalline　structure.　In　comparison　with　Mn-Ce-Co-Ox/PPS-UM,　the　1.2Mn-Ce-Co-Ox/PPS　composite　filter　material　also　exhibits　higher　resistance　to　H2O　and　SO2.　©　2017,　Science　Press.　All　right　reserved.