高温固相法制备钒掺杂含钛高炉渣光催化抗菌材料

采用高温固相法,掺杂不同质量分数的V2O5,在800℃煅烧2h合成了钒掺杂的含钛高炉渣催化剂(vanadium oxide modified titanium bearing blast furnace slag,VTBBFS)。用X射线衍射、扫描电子显微镜和紫外-可见漫反射光谱仪对钒掺杂的含钛高炉渣催化剂进行了表征,确定其具有钙钛矿结构;粉体的颗粒形态均为不规则块状,800℃煅烧后出现了团聚现象;在紫外区域具有强光吸收能力,并发生红移。以白色念珠菌为实验菌种考察钒掺杂的含钛高炉渣催化剂抗真菌能力。结果表明,V2O5掺杂量为10%时,催化剂具有较强的抗白色念珠菌能力,在普通光照下杀菌率可达到100%。

Study of preparation of vanadium oxide modified titanium-bearing blast furnace slag and its antibacterial activity

Perovskite type titanium-bearing blast furnace slag photocatalysts blending with vanadium oxide were prepared by the high temperature solid-state method at 800℃ for 2h,which were prepared with different concentration of vanadium oxide.VTBBFS photocatalysts were characterized by XRD,UV-Vis absorption spectra and SEM measurements.It showed that the VTBBFS was perovskite type,the crystals of VTBBFS were anomalous and appeared agglomeration after calcining at 800℃.Its photical absorption activity was checked under UV-Vis light irradiation,which became Einstein shift.Candida albicans were used to check the antibacterial activities of VTBBFS photocatalysts.The results showed that:compared to titanium-bearing blast furnace slag,VTBBFS photocatalysts showed strong antibacterial activity; the antibacterial percentage of VTBBFS10 catalyst was 100% at ordinary light.