构建具有增强可见光光催化活性和抗菌特性的可磁化回收 g-C3N4/CeO2-Fe3O4 还原氧化石墨烯复合材料

IF 2.3 4区 化学 Q3 CHEMISTRY, PHYSICAL Catalysis Letters Pub Date : 2024-10-02 DOI:10.1007/s10562-024-04831-7
Zongli Ren, Zhongwei Zhao, Xin Ma, Weiwei Zhang
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引用次数: 0

摘要

构建多界面接触阶梯式(S-scheme)光催化剂是实现光降解雌酮和刚果红的高电子传递效率的可行途径。本文选择 g-C3N4 作为主要光催化剂,将具有独特 Ce4+ → Ce3+ 转换性能的 CeO2 纳米片和 Fe3O4 还原型氧化石墨烯负载到 g-C3N4 表面,从而构建了 2D-2D 磁性光催化剂。2D-2D 磁性光催化剂结构通过磁性回收实现了可重复使用性,同时,Fe3O4 还原氧化石墨烯成为 g-C3N4/CeO2 复合光催化剂的高效宿主。光催化性能是用 etsrone 和刚果红来检测的。光降解研究表明,CeO2/g-C3N4/Fe3O4-还原氧化石墨烯复合催化剂能降解 71% 的雌酮、92% 的刚果红和 89% 的菲。此外,研究还表明磁性 CeO2/g-C3N4/ Fe3O4 还原氧化石墨烯对变形杆菌和大肠杆菌具有很强的抗菌性能。采用三因素三水平盒-贝肯设计(BBD),通过响应面方法优化三个影响较大的参数:光照时间(分钟)、光催化剂质量(毫克)和污染浓度(ppm)。预计CeO2/g-C3N4/Fe3O4-还原氧化石墨烯可作为二维-二维磁性光催化剂实现其价值化,在环境修复或催化领域具有非常广阔的发展前景。 图文摘要
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Construction of Magnetically Retrievable g-C3N4/CeO2-Fe3O4-Reduced Graphene Oxide Composites With Enhanced Visible-Light Photocatalytic Activity And Antibacterial Properties

Construction of multi-interface contact step-scheme (S-scheme) photocatalyst is a promising pathway to achieve high-electron transfer efficiency for photodegradation estrone and congo red. In this paper, g-C3N4 is chosen as the main photocatalyst, CeO2 nanosheet with the unique Ce4+ → Ce3+ conversion performance and Fe3O4-Reduced graphene oxide are loaded onto the g-C3N4 surface to bulid 2D-2D magnetic photocatalyst. The 2D–2D magnetic photocatalyst structure imparts reusability by magnetic retrieval and at the same time Fe3O4-Reduced graphene oxide acts as an efficient host for g-C3N4/CeO2 composite photocatalyst. The photocatalytic performance is examined using etsrone and congo red. Photodegradation studies show the CeO2/g-C3N4/ Fe3O4- Reduced graphene oxide a composite catalyst can degrade 71% of estrone, 92% of congo red and 89% phenanthrene, Free radical scavenger test shows superoxide and hydroxyl radical species play a major role in the degradation. Furthermore, it is demonstrated that the magnetic CeO2/g-C3N4/ Fe3O4-Reduced graphene oxide possesses strong antibacterial properties against Proteus mirabilis and Escherichia coli. A three-factor-three-level Box–Behnken design (BBD) was selected to optimize three greatly influential parameters: light irradiation time (min), The quality of photocatalyst(mg) and pollution concentration(ppm) by response surface methodology. It is expected that CeO2/g-C3N4/ Fe3O4- Reduced graphene oxide can be used as a 2D–2D magnetic photocatalyst for to achieve its valorization, which have very broad development prospects in the field of environmental remediation or catalysis.

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来源期刊
Catalysis Letters
Catalysis Letters 化学-物理化学
CiteScore
5.70
自引率
3.60%
发文量
327
审稿时长
1 months
期刊介绍: Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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