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以偕胺肟纤维(AOCF)为载体,采用配位-沉淀法研制了一种新型的类Fenton催化剂CuO/AOCF.用SEM、EDS和XRD对CuO/AOCF的表面形貌、晶体结构和表面成分进行分析,结果显示:CuO纳米颗粒均匀分布在AOCF表面.以活性红染料为目标降解物及其去除率为评价指标,考察CuO/AOCF与H_2O_2组成类Fenton催化剂的光催化性能.结果表明:在氙灯光照作用下,0.6 g·L~(-1)CuO/AOCF、2 m L·L~(-1)H_2O_2、反应时间为80 min,活性红溶液几乎完全被降解.对比同质量粉体CuO,CuO/AOCF对光催化性能有着更好的促进作用.CuO/AOCF重复使用5次后降解率仍能大于80%.动力学研究表明,该类Fenton催化降解反应遵循一级反应动力学规律.
A novel Fenton-like catalyst, CuO / AOCF, was synthesized by coordination-precipitation with amidoxime fiber (AOCF) as support. The surface morphology, crystal structure and surface composition of CuO / AOCF were investigated by SEM, EDS and XRD The results showed that the CuO nanoparticles were evenly distributed on the surface of AOCF.The photocatalytic performance of CuO / AOCF and H_2O_2-based Fenton catalysts was investigated by the degradation of the active red dye and its removal rate.The results showed that in the Under the illumination of xenon lamp, the reactive red solution was almost completely degraded with 0.6 g · L -1 CuO / AOCF and 2 m L·L -1 H 2 O 2 for 80 min, and the same quality powder CuO , CuO / AOCF can promote the photocatalytic activity better.Under the repeated use of CuO / AOCF for 5 times, the degradation rate can still be more than 80% .Kinetic studies show that this type of Fenton catalytic degradation follows the first order kinetics.