In　this　paper,　a　TiO2　/black　talc　composite　photocatalyst　was　prepared　by　the　sol-gel　method　using　TBOT　as　titanium　source　and　black　talc　as　carrier.　Rhodamine　B　was　used　as　the　targeted　pollutant　to　study　the　adsorption　role　of　carbon　in　black　talc.　The　results　showed　that　with　the　adsorption-degradation　cycles,　the　illumination　time　can　be　reduced　by　40%.　The　adsorption　rate　and　degradation　rate　of　the　composite　photocatalyst　was　also　increased.　The　degradation　rate　of　Rhodamine　B　reached　more　than　95%,　which　fully　shows　the　synergistic　effect　between　TiO2　nanoparticles　and　black　talc.　In　this　way,　the　adsorption-degradation　coupling　of　the　photocatalyst　could　be　realized.　©　2021　by　the　authors.　Licensee　MDPI,　Basel,　Switzerland.