First,a UVA (Long-wave ultraviolet)-enhanced rod-like rutile TiO2 was prepared under low-temperature hydrolysis conditions,and Al(OH)3 was uniformly coated on the surface of TiO2,and then TiO2/Al(OH)3 (TA) was surface-modified using lauroyl lysine (LL),and finally,a layer of natural sunscreen resveratrol (RES) was coated on the surface of TiO2/Al(OH)3/LL (TAL) to obtain TiO2/Al(OH)3/LL/RES (TALR) composite materials.XRD,FT-IR,TEM,SEM and TG were used to characterize the structure,morphology and thermal stability of the samples.The results showed that Al(OH)3 was uniformly coated on the surface of rod-like rutile TiO2 in an amorphous form,and the optimal coating amount was 10% (mass fraction).It had excellent UV shielding ability in the UVB (Middle-wave ultraviolet) range,and still had satisfactory absorption of UVA.The optimal dosage of the modifier LL was 12%,and the optimal coating amount of RES was 15%.The antioxidant experiments and sun protection factor test results indicated that the TALR composite materials had good free radical scavenging ability and excellent UV shielding effect.
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基金资助
常州市科技支撑计划(CE20215031)
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