Two-dimensional　layered　double　hydroxides　(LDH)　as　a　membrane　material　has　tremendous　potential　in　the　water　treatment　field.　However,　the　stability　and　permeance　of　the　LDH　membrane　should　be　further　improved　for　the　industrial　application.　In　this　study,　the　LDH　separation　layer　was　in　situ　grown　on　the　tubular　Al2O3　substrate.　The　obtained　LDH　composite　membrane　was　then　calcined　to　reduce　the　surface　free　energy　and　remove　some　interlayer　anions.　Therefore,　the　calcined　LDH　composite　membrane　exhibited　enhanced　stability　and　permeance　for　removing　dye　molecules　from　water.　The　permeance　of　the　calcined　LDH　membrane　reached　367　Lm(-2)h(-1)MPa(-1)　and　the　rejection　for　Eriochrome　black　T　was　still　above　99%.　Moreover,　the　membrane　can　maintain　the　separation　performance　more　than　110　h　in　the　nanofiltration　process.　The　morphologies　and　structures　of　the　LDH　membranes　before　and　after　calcination　were　also　investigated.　The　results　indicated　that　this　facile　method　is　effective　to　improve　the　separation　performance　of　the　LDH　membrane.　(C)　2020　The　Korean　Society　of　Industrial　and　Engineering　Chemistry.　Published　by　Elsevier　B.V.　All　rights　reserved.