材料科学
化学工程
制氢
X射线光电子能谱
扫描电子显微镜
化学
阳极
分解水
核化学
催化作用
光催化
纳米技术
电极
有机化学
复合材料
物理化学
工程类
作者
Chia-Hung Chen,Yi‐Ching Lin,Yen-Ping Peng,Ming-Hsun Lin
出处
期刊:Chemosphere
[Elsevier]
日期:2021-06-29
卷期号:284: 131360-131360
被引量:15
标识
DOI:10.1016/j.chemosphere.2021.131360
摘要
This study aimed to produce a clean energy, hydrogen, and to remove pollutants simultaneously in water by photoelectrochemical (PEC) method. The photo-anode of cuprous oxide modified titanate nanotube arrays (Cu2O/TNTAs) was synthesized by using lactic acid, green tea, and coffee as reductants individually. The characterizations of Cu2O/TNTAs were performed by ultraviolet–visible diffuse reflectance spectroscopy (UV–vis DRS), field emission scanning electron microscope (FE-SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) to investigate the physical and chemical properties such as structure, crystallization, element contents, and optical performance. The electrochemical analyses of Cu2O/TNTAs showed the photo-current of Cu2O/TNTAs-t (using green tea as reductant) was 2.4 times higher than pure TNTAs, illustrating the effective separation of electron-hole pairs after Cu2O modification. The photoelectrochemical performances of Cu2O/TNTAs-t and Cu2O/TNTAs-c (using coffee as the reductant) were better than Cu2O/TNTAs-L (using lactic acid as the reductant) in terms of photo-current density, Ibuprofen degradation, and hydrogen generation, implying that depositing Cu2O on TNTAs can significantly improve the electron mobility by reducing the recombination rate of electron-hole pairs, which is beneficial to simultaneously ibuprofen degradation and hydrogen production.
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