铁基多相Fenton-like催化剂制备及其催化活性研究  

Development and Performance Assessment of Fe-based Heterogeneous Fenton-like Catalyst

作　　者：张佳琳 叶脉 张路路 王中慧 代超 叶翔 钱伟 ZHANG Jialin;YE Mai;ZHANG Lulu;WANG Zhonghui;DAI Chao;YE Xiang;QIAN Wei(Guangdong Provincial Academy of Environmental Science,Guangzhou 510006,China;Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;Shenzhen Crystal Energy Technology Co.,Ltd.,Shenzhen 518(XX),China;Jinan University,Guangzhou 510632,China;School of Environment and Energy,South China University of Technology,Guangzhou 510006,China)

机构地区：[1]广东省环境科学研究院,广东广州510006 [2]仲恺农业工程学院,广东广州510225 [3]深圳市捷晶能源科技有限公司,广东深圳518000 [4]暨南大学,广东广州510632 [5]华南理工大学环境与能源学院,广东广州510006

出　　处：《环境科学与技术》2020年第11期96-103,共8页Environmental Science & Technology

摘　　要：文章采用四氧化三铁作为催化剂活性组分,蔗糖作为黏结剂,获得多孔的Fenton-1ike催化剂颗粒,并利用SEM、XRD等对催化剂的物理化学性质进行表征。通过Fenton-1ike反应中难生物降解的偶氮染料AO7的降解效率来评价自制催化剂的催化活性,研究了pH值、H2O2用量等参数对催化活性的影响。结果表明多孔的Fenton-1ike催化剂能有效地催化H2O2降解以AO7为代表的有机污染物。当溶液p H值在2.0~7.0之间,Fenton-1ike反应进行60 min后,AO7去除率在82.3%~99.84%之间。相比较传统Fenton反应的pH适用范围(一般来说为2.5~3.5),自制的Fenton-like催化剂的p H适用范围更宽,在废水处理中具有更好的应用前景。Porous Fenton-like catalyst particles were obtained by pelletization and calcination from Fe3 O4 and sucrose.The obtained samples were characterized by scanning electron microscope(SEM),X-ray diffraction(XRD)and BrunauerEmmet-Teller(BET)measurements.The catalytic activity was evaluated by the degradation efficiency of AO7 which is difficultly biodegradable,and the effects of parameters such as pH value and H2 O2 dosage on catalytic activity were also studied.The results showed that the porous particles as Fenton-like catalysts could effectively enhance the degradation efficiency of AO7.When pH of the solution was between 2.0~7.0,the degradation efficiency of AO7 was between 82.3%~99.84%after60 min’s reaction.Compared to the pH of traditional Fenton reaction(usually 2.5~3.5),the Fenton-like catalyst had a wider range of the pH application and may have a better prospect of application in wastewater treatment.

关 键 词：多相催化剂 四氧化三铁 酸性橙7 pH适用范围 

分 类 号：X703[环境科学与工程—环境工程]