Magnéli相亚氧化钛材料的制备及其可见光光催化性能  

Preparation of Magnéli-phase Materials and Their Photocatalytic Activity Under Visible Light

作　　者：李军[1] 吴恩辉[1] 侯静[1] 黄平[1] 徐众[1] 蒋燕 刘黔蜀[1] LI Jun;WU Enhui;HOU Jing;HUANG Ping;XU Zhong;JIANG Yan;LIU Qianshu(Panzhihua University,International Research Institute of Vanadium and Titanium,Sichuan Key Laboratory of Comprehensive Utilization of Vanadium and Titanium Resources,Application and Solar Technology Integration Sichuan Provincial Key Laboratory of University,Panzhihua 617000,China)

机构地区：[1]攀枝花学院攀枝花国际,钒钛研究院钒钛资源综合利用四川省实验室,太阳能技术集成及应用推广四川省高等学校重点实验室,四川攀枝花617000

出　　处：《材料科学与工程学报》2021年第6期922-928,共7页Journal of Materials Science and Engineering

基　　金：四川省科技支撑计划资助项目(2020YFH0195);攀枝花市应用技术研究与开发资金资助项目(2017CY-G-15);太阳能技术集成及应用推广四川省高等学校重点实验室资助项目(TYNSYS-2018-Z-02);攀枝花学院重点培育资助项目(2019ZD004)。

摘　　要：以金红石型钛白粉为原料,采用铝还原-盐酸酸洗工艺常压下制备了Magnéli相亚氧化钛材料。采用包括X射线衍射(XRD)仪等多种表征方法测定了制备样品的物相组成、形貌、化学价态及光谱吸收性能,并测试了可见光下样品降解甲基蓝的光催化活性。研究结果表明:950℃焙烧15~30min条件下制备的Magnéli相亚氧化钛材料主要为Ti_(4)O_(7)和Ti5O9的混合相,采用盐酸酸洗可以有效去除样品中的Al,但含有不溶于酸的α-Al_(2)O_(3)。该工艺制备的Magnéli相亚氧化钛颗粒尺寸为100~200nm,没有存在明显的团聚烧结长大现象,具有良好的可见光和近红外光吸收性能以及在可见光条件下具有较好的光催化能力。Magnéli phase materials were prepared by aluminothermic reduction of rutile titanium dioxide and hydrochloric acid pickling process.Phase structure,morphology,chemical valence and spectral absorption performance of the as-prepared sample were characterized by the different methods such as X-ray diffraction et al.The results show that the magnéli phase materials which consisted of Ti_(4)O_(7)and Ti5O9 phases can be successfully prepared at 950℃for 15-30 min.Al can be effectively removed and some amounts ofα-Al_(2)O_(3)can not be dissolved with hydrochloric acid.The particle size of magnéli phase material is almost the same as the raw material,about 100 nm to 200 nm.Black magnéli phase material has strong absorptive capacity in the visible and near-infrared region.

关 键 词：钛白粉 铝热还原 盐酸酸洗 Magnéli 光催化 

分 类 号：O612.4[理学—无机化学]