Co@CoO/竹炭纤维的制备及其对废水中盐酸四环素去除性能  

Preparation of Co@CoO/Bamboo Charcoal Fiber and Its Removal Performance of Tetracycline Hydrochloride from Wastewater

作　　者：代兰玲 郭荣辉[1] DAI Lan-ling;GUO Rong-hui(College of Biomass Science and Engineering,Sichuan University,Chengdu 610065)

机构地区：[1]四川大学轻工科学与工程学院,四川成都610065

出　　处：《纺织科学与工程学报》2023年第4期80-85,共6页Journal of Textile Science & Engineering

基　　金：四川省科技计划项目(2020YFN0150);川大—宜宾市战略合作专项资金项目(2020CDYB-5)。

摘　　要：将沸石咪唑骨架(ZIF-67)嵌入到具有中空薄壁细胞框架的竹纤维中,通过高温热解获得负载Co和CoO纳米颗粒的竹炭纤维复合材料(Co@CoO/竹炭纤维)。采用XRD、SEM、XPS表征Co@CoO/竹炭纤维微观结构和成分。研究Co@CoO/竹炭纤维催化过氧硫酸盐(PMS)降解典型抗生素(盐酸四环素TCH)的性能,考察了不同PMS添加量、Co@CoO/竹炭纤维催化剂添加量和温度对TCH去除效率的影响,探究了催化降解过程中产生的活性氧种类。结果表明,多孔多面体ZIF-67在竹纤维上生长,热解后仍保持多孔多面体结构;得到的Co@CoO/竹炭纤维活性位点丰富,10 mg Co@CoO/竹炭纤维与20 mg PMS在15 min内对30 mg/L TCH催化降解效率达99.90%;3次循环后,Co@CoO/竹炭纤维/PMS对TCH降解效率仍可达91.25%。Co@CoO/竹炭纤维复合材料的高效催化降解性能为废水处理提供可选择性。Zeolitic imidazolate frameworks(ZIF-67)was embedded into bamboo fiber with hollow paren⁃chyma cell framework.Co@CoO/bamboo charcoal fiber composite loaded with Co and CoO naniparticles was ob⁃tained through high-temperature pyrolysis.Microstructure and composition of Co@CoO/bamboo charcoal fiber were characterized by XRD,SEM and XPS.The performance of degradation of typical antibiotic(tetracycline hydrochloride TCH)by peroxysulfate(PMS)catalyzed by Co@CoO/bamboo charcoal fiber was studied.The effects of PMS dosage,Co@CoO/bamboo charcoal fiber catalyst dosage and temperature on TCH degradation effi⁃ciency were investigated,and the types of reactive oxygen generated during catalytic degradation process were ex⁃plored.The results showed that the ZIF-67 with porous polyhedron was grown on bamboo fiber and structure of porous polyhedrons was still maintained after pyrolysis.The obtained Co@CoO/bamboo-carbon fiber had rich ac⁃tive sites,and the catalytic degradation efficiency made by 10 mg Co@CoO/bamboo charcoal fiber and 20 mg PMS for 30 mg/L TCH could reach up to 99.90%within 15 minutes and it was still up to 91.25%after three cy⁃cles.The efficient catalytic degradation performance of Co@CoO/bamboo charcoal fiber composite provided an al⁃ternative for wastewater treatment.

关 键 词：竹炭纤维 Co/CoO纳米颗粒 盐酸四环素 过氧硫酸盐 催化降解 

分 类 号：TB332[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]