掺杂钴(α-Fe2O3)薄膜的合成、表征及抗菌活性

IF 0.9 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
D. Bekkar, Y. Meftah, B. Benhaoua, A. Rahal, A. Benhaoua, A. Hamzaoui
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引用次数: 1

摘要

采用动喷嘴喷雾热解法在500℃加热的玻璃基片上沉积了0 ~ 20 wt %钴掺杂赤铁矿氧化铁(α-Fe2O3)薄膜。掺杂剂的浓度依次为0、2%、5%、10%和20%。对于未掺杂的薄膜,XRD分析发现(012)、(104)、(110)、(113)、(024)、(116)、(214)和(300)面存在衍射峰,证实了α-Fe2O3相的形成。而对于Co掺杂的α-Fe2O3薄膜,进一步观察到α-Fe2O3相对应的衍射峰,分别与钴氧化物CoO和Co3O4的(200)面和(311)面匹配良好。基于赤铁矿向高角度峰移,XRD证实了Co取代。当掺杂量从0 ~ 2wt增加时,赤铁矿的晶粒尺寸从37nm增加到47nm。%有限公司/ Fe。然后在20wt时减小到28nm。% Co掺杂。而钴氧化物CoO和Co3O4的晶粒尺寸分别在29-32nm和18-43nm之间。光学研究表明,随着掺杂量的增加,透射率增加,在600nm处达到80%,带隙出现蓝移。FTIR研究证实了钴氧化物在平均波数460-542cm-1处的存在。在抗菌试验领域,钴掺杂赤铁矿纳米颗粒(NPs)对大肠杆菌、无性李斯特菌、假铜绿单胞菌和沙门氏菌均具有良好的抑菌活性。% Co/Fe掺杂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SYNTHESIS, CHARACTERIZATION, AND ANTIBACTERIAL ACTIVITY OF COBALT DOPED (α-Fe2O3) THIN FILMS
0-20 wt % Cobalt doped hematite iron oxide (α-Fe2O3) thin films were deposited on 500°C heated glass substrates via spray pyrolysis method with moving nozzle. The dopant concentration is stepped as 0, 2%, 5%, 10%, and 20%. For the non doped thin film, XRD analyses exhibit the presence of diffraction peaks corresponding to planes (012), (104), (110), (113), (024), (116), (214), and (300) confirming the formation of α-Fe2O3 phase. While for the Co doped α-Fe2O3 thin films, further diffraction peaks corresponding to α-Fe2O3 phase, peaks matching well with the planes (200) and (311) of cobalt oxides CoO and Co3O4 respectively are observed. Co substitution was confirmed by XRD based on peaks shift of hematite towards higher angles. The crystallite size of the hematite increases from 37nm to 47nm with increasing dopant from 0 to 2wt. % Co/Fe. Then it decreases to 28nm for 20wt. % Co doping. While for cobalt oxides CoO and Co3O4, their crystallite sizes were found to be in the range of 29-32nm and 18-43nm, respectively. The optical investigation indicates an increase in transmittance with increasing the dopant level reaching 80% at 600nm with blue shift in the band gap for the doped samples. FTIR study confirms the existence of the cobalt oxides at wave number average 460-542cm-1 . As an application in the areas of the antibacterial test, cobalt doped hematite nanoparticles (NPs) exhibit a good antibacterial activity against E. coli, Listeria innocua, Pseudo monas aeruginosa and Salmonella beyond 5wt. % Co/Fe doping.
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来源期刊
Journal of Optoelectronic and Biomedical Materials
Journal of Optoelectronic and Biomedical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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