使用聚噻吩修饰的 CuFeO 纳米杂化材料实现二苯脲和聚乙烯的可见光诱导降解。
Visible-light induced degradation of diphenyl urea and polyethylene using polythiophene decorated CuFeO nanohybrids.
机构信息
Department of Chemistry and Biochemistry, North Carolina Central University, Durham, NC, 27707, USA.
Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, 110025, India.
出版信息
Sci Rep. 2023 Mar 27;13(1):4975. doi: 10.1038/s41598-023-30669-x.
The present work reports facile synthesis of CuFeO nanoparticles via co-precipitation method and formulation of its nanohybrids with polythiophene (PTh). The structural and morphological properties were investigated using fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy coupled with energy dispersive spectra (SEM-EDS) and UV-Vis spectroscopy. The band gap was found to decrease with increase in the loading of PTh and was found to be 2.52 eV for 1-PTh/CuFeO, 2.15 eV for 3-PTh/CuFeO and 1.89 eV for 5-PTh/CuFeO. The nanohybrids were utilized as photocatalysts for visible light induced degradation of diphenyl urea. Diphenyl urea showed 65% degradation using 150 mg catalyst within 120 min. Polyethylene (PE) was also degraded using these nanohybrids under visible light as well as microwave irradiation to compare its catalytic efficiency under both conditions. Almost 50% of PE was degraded under microwave and 22% under visible light irradiation using 5-PTh/CuFeO. The degraded diphenyl urea fragments were analyzed using LCMS and a tentative mechanism of degradation was proposed.
本工作通过共沉淀法简便地合成了 CuFeO 纳米粒子，并制备了其与聚噻吩（PTh）的纳米杂化物。使用傅里叶变换红外光谱（FT-IR）、X 射线衍射（XRD）、扫描电子显微镜结合能谱（SEM-EDS）和紫外可见光谱对结构和形态特性进行了研究。发现随着 PTh 负载量的增加，带隙减小，1-PTh/CuFeO 的带隙为 2.52 eV，3-PTh/CuFeO 的带隙为 2.15 eV，5-PTh/CuFeO 的带隙为 1.89 eV。将纳米杂化物用作可见光诱导下二苯脲降解的光催化剂。使用 150 mg 催化剂，在 120 min 内，二苯脲的降解率达到 65%。还使用这些纳米杂化物在可见光和微波辐射下对聚乙烯（PE）进行降解，以比较它们在两种条件下的催化效率。使用 5-PTh/CuFeO，在微波下几乎降解了 50%的 PE，在可见光照射下降解了 22%。使用 LCMS 分析了降解的二苯脲片段，并提出了降解的推测机制。
Zotero 插件