Efficiency enhancement of photocatalytic degradation of tetracycline using reduced graphene oxide coordinated titania nanoplatelet | |
Li, Cuixia1,2,3; Hu, Ruibing2; Lu, Xuefeng2; Bashir, Sajid3; Liu, Jingbo Louise3 | |
刊名 | Catalysis Today |
2020-06-15 | |
卷号 | 350页码:171-183 |
关键词 | Antibiotics Catalysis Catalysts Cost effectiveness Degradation Energy gap Graphene Health risks Medical applications Nanocomposites Oxide minerals Photocatalysis Public health Sol-gel process Sol-gels Solar energy TiO2 nanoparticles Accidental release Degradation efficiency Efficiency enhancement Low cost catalysts Photo catalytic degradation Reduced graphene coordinated TiO2 Tetracycline antibiotics Tetracycline hydrochloride |
ISSN号 | 09205861 |
DOI | 10.1016/j.cattod.2019.06.038 |
英文摘要 | The compound tetracycline hydrochloride (TCH) is an antibiotic used in the veterinary and medical application, however, it's over usage and accidental release into riverine and estuaries raising up serious threats to the ecology, environment and public health. This study focused on developing a low-cost catalyst to photodegrade TCH. Different formulations of TiO2 photocatalysts scaffolded with reduced graphene (denoted as TiO2-RGO-TiO2) were produced using a cost-effective sol-gel method. The mesoporous structured TiO2-RGO-TiO2 was tuned using citric acid as a complexing agent, Pluronic P-123 as a grafting agent and graphene oxide (GO) as structural "core" to guide the TiO2 growth. Our findings documented that the TiO2-RGO-TiO2 catalysts displayed high degradation efficiency towards TCH. This efficiency was determined to be improved by 22.8% under ultraviolet light and 32.80% under simulated solar energy within 2 h exposure respectively, relative to catalysis by TiO2 alone. It was found that 6 wt percent GO resulted in the highest degradation percentage (˜ 94%) due to the synergistic effects of inhibition of the electron-hole (e− and h+) recombination and improvement of effective reactive sites. The holes were found to the major factor in facilitating the photocatalytic degradation of TCH (75.4%), while the reactive oxygen species (ROS) accounted for the remaining 24.63%. Another factor to contribute to the superior performance of the TiO2-RGO-TiO2 compared to TiO2 alone lies in the decrease of the band gap energy of TiO2 from 3.20 to 2.87 eV upon introduction of reduced GO. © 2019 Elsevier B.V. |
WOS研究方向 | Chemistry ; Engineering |
语种 | 英语 |
出版者 | Elsevier B.V., Netherlands |
WOS记录号 | WOS:000541709100009 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115252] |
专题 | 材料科学与工程学院 |
作者单位 | 1.State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, 287 Langongping Rd, Qilihe District, Lanzhou; Gansu, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, 287 Langongping Rd, Qilihe District, Lanzhou; Gansu, China; 3.The Department of Chemistry, Texas A&M University-Kingsville, MSC 161, 700 University Blvd, Kingsville; TX; 78363, United States |
推荐引用方式 GB/T 7714 | Li, Cuixia,Hu, Ruibing,Lu, Xuefeng,et al. Efficiency enhancement of photocatalytic degradation of tetracycline using reduced graphene oxide coordinated titania nanoplatelet[J]. Catalysis Today,2020,350:171-183. |
APA | Li, Cuixia,Hu, Ruibing,Lu, Xuefeng,Bashir, Sajid,&Liu, Jingbo Louise.(2020).Efficiency enhancement of photocatalytic degradation of tetracycline using reduced graphene oxide coordinated titania nanoplatelet.Catalysis Today,350,171-183. |
MLA | Li, Cuixia,et al."Efficiency enhancement of photocatalytic degradation of tetracycline using reduced graphene oxide coordinated titania nanoplatelet".Catalysis Today 350(2020):171-183. |
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