中文摘要：

采用高能球磨法，添加不同比例硫酸，在400℃煅烧2h合成了具有钙钛矿型的硫酸掺杂的含钛高炉渣催化剂（sulfuric acid-modified titanium-bearing blast furnace slag，STBBFS）。用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、紫外可见漫反射光谱（UV-vis）和热重（TG）分析对STBBFS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，400℃煅烧后出现了团聚现象；在紫外区域具有很强的光吸收能力。由Cr（Ⅵ）还原率来评价STBBFS催化剂的光催化活性，结果表明，硫酸掺杂量为2．5％时，ST—BBFS催化剂具有较高的光催化活性，500W中压汞灯照射6h，可将浓度为20mg／L的Cr（Ⅵ）废水完全降解。

英文摘要：

Perovskite type sulfuric acid-modified titanium-bearing blast furnace slag （STBBFS） photoeatalysts were prepared by the high energy ball milling method at 400℃ for 2h. STBBFS photocatalysts were characterized by XRD, FTIR, TG, UV-vis absorption spectra and SEM measurements. Its photoeatalytic activity was checked through the photocatalytie reduction of Cr（Ⅵ） as a model compound under UV-vis light irradiation. The results showed that. the photocatalytie activities of STBBFS photocatalysts showed a higher catalytic activity compared to titanium-bearing blast furnace slag catalysts; the addition of sulfuric acid enhanced the the photoeatalytie activity of STBBFS photoeatalysts, the optimum proportion is 2.5 % ; the potocatalytic reduction efficiency of Cr（Ⅵ） reached 100% after 6h.