In　order　to　control　nitrogen　oxides　emissions,　V2O5-WO3/TiO2　catalysts　are　widely　applied　in　coal-fired　power　plants.　Consequently,　a　large　number　of　V2O5-WO3/TiO2　catalysts　are　spent　annually　because　of　their　short　operating　life.　Although　these　spent　catalysts　contain　amounts　of　heavy　metals,　they　have　also　been　regarded　as　a　potential　secondary　resource　for　the　recovery　of　valuable　elements　titanium,　tungsten,　and　vanadium.　Therefore,　this　study　developed　an　efficient　method　for　selective　leaching　of　heavy　metal　vanadium　with　an　＂H2SO4　+　Na2SO3＂　acid　reduction　system.　The　use　of　this　leaching　solution　achieved　nearly　100%　efficiency　in　vanadium　removal,　and　the　effects　of　the　leaching　parameters　on　the　vanadium　leaching　efficiencies　were　investigated.　Subsequently,　the　titanium-enriched　residue　obtained　from　the　leaching　process　was　used　to　produce　high-performance　WO3-TiO2　photocatalysts　with　dominant　{001}　facets　via　a　hydrothermal　treatment.　The　influence　of　the　amount　of　hydrogen　fluoride　on　the　morphology　and　percentage　exposure　of　the　{001}　facets　of　the　photocatalysts　was　studied　systematically.　The　method　proposed　in　this　study　constitutes　a　novel　and　sustainable　approach　for　the　disposal　of　spent　V2O5-WO3/TiO2　catalysts.