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Fabrication of Z-Scheme Fe2O3–MoS2–Cu2O Ternary Nanofilm with Significantly Enhanced Photoelectrocatalytic Performance
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2018-01-16 00:00:00 , DOI: 10.1021/acs.iecr.7b04089
Yanqing Cong 1 , Yaohua Ge 1 , Tongtong Zhang 1 , Qi Wang 1 , Meiling Shao 1 , Yi Zhang 1
Affiliation  

Ternary Fe2O3–MoS2–Cu2O nanocomposites were fabricated via electrodeposition and hydrothermal method. The as-prepared photocatalytic films were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results indicated that MoS2 and Cu2O particles were successfully deposited onto the surface of Fe2O3 particles. MoS2 and Cu2O coloading achieved a synergetic effect on the improvement of the photoelectrochemical performance of Fe2O3 film. The highest photocurrent density was achieved on Fe2O3–MoS2–Cu2O film, which was 20, ∼5.5, and 2 times those of Fe2O3, Fe2O3–MoS2, and Fe2O3–Cu2O films, respectively. The excellent photoelectrocatalytic performance was attributed to the Z-scheme electron transfer mechanism, which results in the fast charge transfer and strong redox ability on the ternary composite. This work provides a promising Z-scheme ternary semiconductor for environmental purification and water oxidation.

中文翻译:

Z型Fe 2 O 3 -MoS 2 -Cu 2 O三元纳米膜的制备及其光电催化性能

通过电沉积和水热法制备了三元Fe 2 O 3 -MoS 2 -Cu 2 O纳米复合材料。通过扫描电子显微镜(SEM),X射线衍射(XRD)和X射线光电子能谱(XPS)表征所制备的光催化膜。结果表明,MoS 2和Cu 2 O颗粒成功地沉积在Fe 2 O 3颗粒的表面上。MoS 2和Cu 2 O的共负载对Fe 2 O 3的光电化学性能的改善具有协同作用。电影。Fe 2 O 3 -MoS 2 -Cu 2 O膜的光电流密度最高,是Fe 2 O 3,Fe 2 O 3 -MoS 2和Fe 2 O 3的20,〜5.5和2倍。–Cu 2 O膜,分别。优异的光电催化性能归因于Z方案电子转移机理,从而导致三元复合材料具有快速的电荷转移和强大的氧化还原能力。这项工作为环境净化和水氧化提供了一种有前途的Z方案三元半导体。
更新日期:2018-01-16
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