空心结构的ZnFe_(2)O_(4)/C纳米球的制备及光催化性能研究  

Study on preparation and photocatalytic performance of hollow structure ZnFe_(2)O_(4)/C nano-spheres

作　　者：冯万忠 陈峰[3] 陈哲 FENG Wan-zhong;CHEN Feng;CHEN Zhe(School of Materials Science and Engineering,Jilin Institute of Chemical Technology,Jilin 132022,China;Department of Chemistry,Tonghua Normal University,Tonghua 13400l,China;Organic Synthesis Plant of Jilin Petrochemical Company,Jilin 132000,China)

机构地区：[1]吉林化工学院材料科学与工程学院,吉林吉林132022 [2]通化师范学院化学学院,吉林通化134001 [3]吉林石化公司有机合成厂,吉林吉林132000

出　　处：《分子科学学报》2022年第6期471-477,共7页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(21801091);吉林省教育厅项目(JJKH20200243KJ);吉林市科技局科技创新创业人才培育计划(20190104169)。

摘　　要：利用一种新颖、简单、直观和通用的方法,制备了高分散性的空心ZnFe_(2)O_(4)/C(ZFOC)纳米粒子为光芬顿催化剂,探讨其对水中工业染料和抗生素类污染物的催化降解效果.同时利用X射线衍射和扫描电镜等测试手段对样品的结构和性能进行了表征.以土霉素(OTC)、罗丹明B (RhB)和甲基橙(MO)为研究对象,研究了pH、ZFOC浓度及H2O_(2)浓度对ZFOC光催化降解抗生素和有机染料性能的影响.在最佳实验条件下,ZFOC催化剂对RhB,MO和OTC的降解效率分别为89.33%,96.32%和95.25%.本研究为合成具有空心结构的光催化材料提供了一种简单而新颖的方法,为其进一步在环境和能源领域的应用提供了参考.With the rapid development of human society and the global economy, the environmental pollution and energy shortage crisis have become two main challenges in the modern society. Currently, water contamination associated with antibiotic and industrial dyes has caused serious threat to ecological environment and human health, because the residual antibiotics may lead to the generation of antibiotic resistant bacteria, even superbugs. Hence, it is urgent to develop promising technologies to efficiently remove antibiotic and industrial dyes from wastewater. Heterogeneous Fenton oxidation is a ‘green’ and promising technology platform to deal with the environmental issues. Especially, “Fenton-like” reactions, are now considered as one of the most effective methods. Recently, it has been widely reported that ZnFe_(2)O_(4)is an excellent visible-light-driven photocatalyst with a relatively narrow band gap of 1.9 eV. And it has been widely studied for its high catalytic activity, low cost, easy synthesis, simple magnetic separation, and good photochemical stability. However, it is still challenging and urgent to find some approaches to boost the photocatalyst activity of ZnFe_(2)O_(4)with unique nanostructures to meet the requirements for practical applications. In this paper, uniformly highly dispersible hollow structure ZnFe_(2)O_(4)nanospheres(ZFOC) was prepared through a novel, facile, straightforward and general approach. The photodegradation of rhodamine B, methyl orange and oxytetracycline(OTC) was evaluated under visible light irradiation to investigate the photo-Fenton-like activity of ZFOC. Surprisingly, the photodegradation test showed that the photo-Fenton degradation efficiencies of rhodamine B, methyl orange and oxytetracycline were 89.33%, 96.32% and 95.25%, respectively. The outstanding photocatalytic performance could be attributed to the unique structure. Furthermore, the impact of different reaction parameters on the photocatalytic degradation activities was investigated, including the concentr

关 键 词：光芬顿 可见光 光降解 ZnFe_(2)O_(4)/C 

分 类 号：O611[理学—无机化学]