DING Haoyang,JIN Xiuying,MA Xinyu,et al.Study on the removal of methylene blue by Cu2+ doped TiO2/illite composite[J].Journal of Yanbian University,2022,(01):60-65.
Cu2+掺杂TiO2/伊利石复合材料对亚甲基蓝去除能力的研究
- Title:
- Study on the removal of methylene blue by Cu2+ doped TiO2/illite composite
- 文章编号:
- 1004-4353(2022)01-0060-06
- Keywords:
- nano titanium dioxide; illite; doped; photocatalysis; methylene blue
- 分类号:
- TD985
- 文献标志码:
- A
- 摘要:
- 为解决TiO2晶体中载流子寿命低,且晶体颗粒在溶液中易于团聚、流失而降低光催化效率的问题,采用溶胶 - 凝胶法设计制备了一种以四异丙氧基钛(TTIP)为钛源、三水硝酸铜为铜源、精制伊利石为载体的Cu2+掺杂TiO2/伊利石复合材料,并利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)对样品进行了表征.在模拟自然光下考察了复合材料对亚甲基蓝(MB)的去除能力,并对其稳定性进行了检测.结果显示:伊利石可抑制TiO2晶粒的
- Abstract:
- In order to solve the low carrier life in crystal, and the reduced photocatalytic efficiency for TiO2 derived from easy agglomeration and loss of crystal particles in solution, a Cu2+ doped TiO2/illite composite was designed and prepared by sol - gel method with tetraisopropyl titanium oxide(TTIP)(titanium source), copper nitrate trihydrate(copper source)and refined illite(carrier), which was characterized by X - ray diffraction(XRD)and scanning electron microscopy(SEM).The removal ability of composite for methylene blue(MB)was investigated under simulated natural light, and its stability was gauged.The results show that illite can inhibit the growth of TiO2 grains, prevent the agglomeration between particles effectively, and the removal rate of MB can reach 94.8% after 90 min of illumination.After three times of recycling, the removal rate remains above 90%.All these results indicate that Cu2+ doped TiO2/illite composite exhibit excellent application value in the treatment of dye wastewater.
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备注/Memo
收稿日期: 2021-12-03
基金项目: 国家自然科学基金(21661031,21263026)
第一作者: 丁浩洋(2000—),男,本科生,研究方向为光催化.
通信作者: 姜男哲(1973—),男,博士,教授,研究方向为纳米催化材料.