Green-emitting　Zn2SiO4:Mn　(ZSM)　phosphors　were　prepared　via　a　low-temperature　hydrothermal　route　with　further　calcination.　Two　types　of　MCM-48　submitted　and　not　submitted　to　post-synthesis　treatment　were　used　as　Si　source.　The　phosphors　prepared　from　post-treated　MCM-48　show　much　higher　crystallinity　and　emission　intensity　than　those　from　MCM-48　not　submitted　to　post-synthesis　treatment.　This　can　be　attributed　to　the　larger　pore　volume　and　pore　size　of　post-treated　MCM-48　which　facilitates　Mn2+　ions　to　disperse　more　homogeneously　as　well　as　provides　more　free　space　for　the　growth　of　α-Zn2SiO4.　Increasing　the　hydrothermal　reaction　temperature　can　enhance　the　emission　intensities　of　particles.　The　ZSM　phosphor　showing　the　highest　relative　emission　intensity　was　obtained　at　a　hydrothermal　temperature　of　110　°C　and　calcining　temperature　of　1000　°C　by　using　the　post-treated　MCM-48　as　Si　source.　©　2013　Elsevier　Ltd.