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Enhanced antibacterial and visible light driven photocatalytic activity of CaFe2O4 doped CdO heterojunction nanohybrid particles prepared by sono-chemical method
Optical Materials ( IF 3.8 ) Pub Date : 2021-02-16 , DOI: 10.1016/j.optmat.2020.110595
Asad Syed , Ali H. Bahkali , Abdallah M. Elgorban

CaFe2O4 doped CdO heterojunction nanohybrid particles (CdO/CaFe2O4 NCs) was fabricated by sono-chemical assisted co-precipitation technique. X-ray powder diffraction (XRD), selected area electron diffraction (SAED) and high-resolution transmission electron microscopy (HRTEM) analysis revealed the crystallinity of CdO and CaFe2O4. Chemical states were determined using X-ray photoelectron spectroscopy (XPS). Fourier-transform infrared spectroscopy (FTIR) also indicates the successful formation of CdO/CaFe2O4 NCs. BET analyzer indicates the high surface area of NCs (44.099 m2/g) compared to individual particles. The optical, electrical and magnetic properties were studied using UV–vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) and vibrating-sample magnetometer (VSM). The resulting CdO/CaFe2O4 NCs showed enhanced performance in photocatalytic activity under visible light irradiation. The intimate NPs contact resulted in improvement in photocatalytic performance owing to the prevention of e/h+ recombination. The h+ and OH radicals played major role in dye degradation that was confirmed by scavengers study. The photocatalyst showed outstanding photostability and recyclability even after six photocatalytic runs. The CdO/CaFe2O4 NCs showed potential bacterial growth inhibition. The result indicates the multifunctionality of CdO/CaFe2O4 NCs that show superior photocatalytic and antimicrobial properties compared with pristine parts of CdO and CaFe2O4 NPs.



中文翻译:

声化学法制备CaFe 2 O 4掺杂的CdO异质结纳米杂化粒子的抗菌和可见光驱动的光催化活性

CAFE 2 ø 4掺杂的CdO异质结纳米杂化物颗粒(CDO /咖啡厅2个ö 4 NCS)通过声化学辅助共沉淀技术制成。X射线粉末衍射(XRD),选择区域电子衍射(SAED)和高分辨率透射电子显微镜(HRTEM)分析显示CdO和CaFe 2 O 4的结晶度。使用X射线光电子能谱(XPS)确定化学状态。傅立叶变换红外光谱(FTIR)也表明CdO / CaFe 2 O 4 NC的成功形成。BET分析仪显示NC的高表面积(44.099 m 2/ g)。使用紫外可见漫反射光谱(DRS),光致发光(PL)和振动样品磁力计(VSM)研究了光学,电和磁性能。所得的CdO / CaFe 2 O 4 NCs在可见光照射下表现出增强的光催化活性。的紧密接触的NP在光催化性能导致改善由于预防电子商务- / H +重组。为H +和OH -自由基发挥,是由拾荒者研究证实在染料降解起主要作用。即使经过六次光催化操作,该光催化剂也显示出出色的光稳定性和可回收性。CdO / CaFe2 O 4 NCs显示潜在的细菌生长抑制作用。结果表明,与原始部分的CdO和CaFe 2 O 4 NP相比,CdO / CaFe 2 O 4 NC的多功能性具有优异的光催化和抗菌性能。

更新日期:2021-02-16
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