羊毛/铁配合物非均相芬顿反应光催化剂的制备及其应用性能  

Preparation and application properties of wool-Fe complex-based heterogeneous Fenton photocatalysts

作　　者：崔桂新[1,2] 董永春 王鹏[1] CUI Guixin;DONG Yongchun;WANG Peng(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Zhejiang Technology Research Institute of CTA Co.,Ltd.,Shaoxing,Zhejiang 312071,China;Key Laboratory of Advanced Textile Composites,Ministry of Education,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]中纺院(浙江)技术研究院有限公司,浙江绍兴312071 [3]天津工业大学先进纺织复合材料重点实验室,天津300387

出　　处：《纺织学报》2019年第12期68-73,共6页Journal of Textile Research

基　　金：绍兴市公益性项目(2014B70006)

摘　　要：为提升废旧羊毛的回收再利用价值,将具有不同直径和鳞片结构的3种羊毛分别与水溶液中Fe3+进行配位反应,得到3种羊毛/铁配合物,然后将其作为非均相芬顿反应光催化剂应用于活性红195的氧化降解反应中,研究了反应条件以及羊毛直径和鳞片层等对配合物的铁离子配合量和光催化性能的影响。结果表明:Fe3+浓度和配位反应温度的升高均能促进Fe3+和羊毛之间配位反应的进行,较薄鳞片层的羊毛更易与Fe3+反应,制备更高铁离子配合量的羊毛/铁配合物;可使用Lagergren准二级动力学模型方程对羊毛与Fe3+之间的配位反应进行描述,但较薄鳞片层羊毛的反应速度更慢;3种羊毛/铁配合物都可显著催化染料发生氧化降解反应,提高铁离子配合量和辐射光强度,均能增加其光催化性能,较细羊毛制备的配合物具有更强的催化作用和p H值适应性。To improve the recycling value of waste wool,three wool fibers with different diameters and scales structures were coordinated with Fe3+ ions for producing three wool-Fe complexes as heterogeneous Fenton photocatalysts for the oxidative degradation of azo dyes. The influence of reaction conditions and the diameter and scale thickness of wool fiber on Fe content and photocatalytic activity of the complexes was investigated. The results indicate that high Fe content and elevated temperature can enhance the coordination of the Fe3+ and wool,and the wool fiber with low scale thickness is coordinated easily with Fe3+ to form wool-Fe complex containing higher Fe content. The coordination of wool fiber with Fe3+ ions can be described by Lagergren pseudo-second-order kinetic model. The wool fiber with low scale thickness shows a slower coordination rate than the other two wool fiber. Three resulting wool-Fe complexes have a significant photocatalytic function on dye degradation. High Fe content and increased irradiation can enhance their photocatalytic activity. The complexes prepared from thin wool fiber exhibites stronger photocatalytic performance and low pH sensitivity.

关 键 词：废弃羊毛 羊毛/铁配合物 鳞片结构 光催化剂 染料降解 

分 类 号：TS195.9[轻工技术与工程—纺织化学与染整工程] O643.32[轻工技术与工程—纺织科学与工程]