使用 CeCoO3/MoS2 异质结作为高效可见光驱动光催化剂增强有机染料的光催化转化,Applied Organometallic Chemistry

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使用 CeCoO3/MoS2 异质结作为高效可见光驱动光催化剂增强有机染料的光催化转化
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2022-09-30 , DOI: 10.1002/aoc.6911
Mahdieh Ghobadifard ₁ , Gelareh Feizi ₁ , Sajjad Mohebbi ₁

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通过水热法成功制备了CeCoO ₃ /MoS _{2异质结。}合成的异质结结构通过多种技术表征，并应用于可见光照射下亚甲基蓝（MB）的转化。为了表征新的异质结结构，傅里叶变换红外（FT-IR），场发射扫描电子显微镜（FE-SEM），能量色散X射线光谱（EDXS），X射线衍射（XRD），光致发光光谱（PL )、差示反射光谱 (DRS) 和透射电子显微镜 (TEM) 分析。FE-SEM图像说明MoS ₂花状成功沉积在CeCoO _3表面平均尺寸为 46 nm 的钙钛矿。研究了催化剂用量、温度、pH值和电子受体的影响。通过CeCoO ₃ /MoS ₂异质结构光催化剂，MB的转化率在20 min内达到98%，而CeCoO ₃钙钛矿在MB中没有观察到明显的转化。_{与CeCoO 3}钙钛矿相比， CeCoO ₃ /MoS ₂异质结构的较高光催化性能归因于其较低的电荷复合。此外，还详细讨论了CeCoO ₃ /MoS ₂异质结构的光催化机理和循环利用实验。CeCoO ₃ /MoS_{因此， 2}异质结构是用于净化污水的有前途的光催化剂。

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Enhanced photocatalytic conversion of organic dyes using CeCoO3/MoS2 heterojunction as a highly effective visible-light-driven photocatalyst

The CeCoO₃/MoS₂ heterojunction was successfully prepared through the hydrothermal method. The synthesized heterojunction structure was characterized by various techniques and applied to the conversion of methylene blue (MB) under irradiation of visible light. To characterize the new heterojunction structure, Fourier transformed infrared (FT-IR), field emission scanning electron microscope (FE-SEM), energy-dispersive X-ray spectroscopy (EDXS), X-ray diffraction (XRD), photoluminescence spectroscopy (PL), differential reflectance spectroscopy (DRS), and transmission electron microscopy (TEM) analyses were used. The FE-SEM images illustrated the successful deposition of MoS₂ flower-like on the surface of CeCoO₃ perovskite with 46 nm as an average size. The influence of the amount of catalyst, temperature, pH, and electron acceptor were investigated. By CeCoO₃/MoS₂ heterostructures photocatalyst, the conversion rate of MB reached 98% within 20 min, whereas by CeCoO₃ perovskite no significant conversion was observed in MB. The higher photocatalytic performance of CeCoO₃/MoS₂ heterostructures is assigned to their lower charge recombination compared to CeCoO₃ perovskite. Moreover, the photocatalytic mechanism and recycling experiments of CeCoO₃/MoS₂ heterostructures are discussed in detail. The CeCoO₃/MoS₂ heterostructures are thus promising photocatalysts for the cleanup of polluted water.

更新日期：2022-09-30

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