Photoelectrochemical properties of TiO2 nanofibers coated by copper oxide nanoparticles using sputtering and chemical bath deposition

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2024-11-29 DOI:10.1007/s10853-024-10468-z

N. Sobti, S. Chaguetmi, S. Achour, S. Gam-Derouich, P. Decorse, S. Nowak, S. Ammar

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引用次数: 0

Abstract

TiO₂ nanofibers (NFs), grown on Ti sheets by hydrothermal treatment, were coated with Cu₂O nanoparticles (NPs) using sputtering or chemical bath deposition (CBD) in order to improve their photoelectrochemical (PEC) water splitting capabilities as photoanodes. Scanning electron microscopy (SEM) and X-ray photoelectron (XPS) spectroscopy confirmed the production of the desired Cu₂O-TiO₂/Ti hetero-nanostructures, while PEC measurements evidenced a net improvement of the produced photocurrent under standard xenon lamp illumination, compared to the pristine TiO₂/Ti structure. Moreover, it appears that the sputtered composite photoanodes provide a higher photocurrent compared to the CBD made ones, meaning that their oxide/oxide interfaces are of better crystalline quality, supplying a larger number of electrons to the Pt cell cathode for H⁺ reduction to H₂, through the external PEC cell circuit.

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溅射和化学浴沉积法制备氧化铜纳米颗粒包覆TiO2纳米纤维的光电化学性能

通过水热法在Ti片上生长TiO2纳米纤维（NFs），采用溅射或化学浴沉积（CBD）的方法在其表面涂覆Cu2O纳米颗粒（NPs），以提高其作为光阳极的光电分解（PEC）能力。扫描电子显微镜（SEM）和x射线光电子能谱（XPS）证实了所需的cu20 -TiO2/Ti异质纳米结构的产生，而PEC测量证明了在标准氙灯照明下产生的光电流比原始的TiO2/Ti结构有净改善。此外，与CBD制造的光阳极相比，溅射复合光阳极似乎提供了更高的光电流，这意味着它们的氧化物/氧化物界面具有更好的晶体质量，通过外部PEC电池电路向Pt电池阴极提供更多的电子，使H+还原为H2。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.