CAJ | 학술논문

以含钛高炉渣和硫酸铵为原料,利用高能球磨法制备硫酸盐掺杂的含钛高炉渣(STBBFS)光催化剂.利用X射线光电子能谱(XPS)、X射线衍射(XRD)、扫描电镜(SEM)、紫外-可见吸收光谱(UV-Vis)、热重(TGA)分析以及暗态吸附Cr(Ⅵ)废水、光催化还原Cr(Ⅵ)废水实验对STBBFS催化剂的物相、表面结构、光吸收能力、吸附容量以及光催化活性进行表征.结果表明:Cr(Ⅵ)在STBBFS催化剂表面上的吸附遵循Langmuir吸附等温线模型；掺杂硫酸盐后,STBBFS催化剂的吸附容量增大为8.25 mg/g;在300℃煅烧后,STBBFS催化剂由于存在较高的钙钛矿含量、吸附容量及表面酸性,从而具有较高的光催化活性.
이함태고로사화류산안위원료,이용고능구마법제비류산염참잡적함태고로사(STBBFS)광최화제.이용X사선광전자능보(XPS)、X사선연사(XRD)、소묘전경(SEM)、자외-가견흡수광보(UV-Vis)、열중(TGA)분석이급암태흡부Cr(Ⅵ)폐수、광최화환원Cr(Ⅵ)폐수실험대STBBFS최화제적물상、표면결구、광흡수능력、흡부용량이급광최화활성진행표정.결과표명:Cr(Ⅵ)재STBBFS최화제표면상적흡부준순Langmuir흡부등온선모형；참잡류산염후,STBBFS최화제적흡부용량증대위8.25 mg/g;재300℃단소후,STBBFS최화제유우존재교고적개태광함량、흡부용량급표면산성,종이구유교고적광최화활성.
Sulfate-modified titanium dioxide-bearing blast furnace slag (STBBFS) photocatalysts were prepared by the high energy ball milling method with (NH4)2SO4 and titanium dioxide-bearing blast furnace slag (TBBFS) as raw materials.X-ray photoelectron spectroscopy(XPS),X-ray diffraction (XRD),scanning electron microscopy (SEM),thermogravimetric analysis (TGA),UV-visible diffuse reflectance absorption spectra (UV-Vis),adsorption experiment and photocatalytic degradation measurement were conducted to characterize the structure,surface status,light absorption capacity,adsorption capacity and photocatalytic activity of the obtained photocatalysts.The adsorption equilibrium was described by the Langmuir isotherm model with a maximum adsorption capacity of 8.25 mg/g of Cr(Ⅵ) ions onto the STBBFS photocatalysts.As a result,sulfation of TBBFS improved the photocatalytic activities of STBBFSx photocatalysts.At a low calcination temperature,the photocatalytic activity of STBBFS300 photocatalyst was markedly higher compared with TBBFSx prepared at high calcination temperature,indicating that the photocatalytic activity of STBBFSx photocatalyst was determined by the balanced result between adsorption capacity and perovskite content.