高效光催化降解染料的高性价比合成ce掺杂ZnO纳米花

IF 2.8 3区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER
Ümmühan Akın , Hamide Avcı , Raşit Aydın , Abdullah Akkaya , Osman Kahveci , Bünyamin Şahin , Enise Ayyıldız
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引用次数: 0

摘要

在这项研究中,我们提出了利用SILAR方法合成和表征ce掺杂ZnO纳米结构。研究了ce掺杂对ZnO纳米花结构、光学、电学和光催化活性的影响。显微镜图像证实ZnO纳米颗粒具有纳米花状。映射分析证实了Ce离子在ZnO基体中的均匀分布。Ce的加入影响了材料的表面特征,导致表面粗糙度的增加。衍射结果表明,当ce掺杂率为5.0%时,晶体尺寸由57.3 nm增大到60.3 nm。样品的FTIR光谱显示Ce-O键在510 ~ 1000 cm−1范围内。当Ce浓度从0.0 %增加到5.0%时,带隙从3.24 eV系统地减小到3.05 eV。表面粗糙度也影响了导电性能,并增加了Ce掺杂后的比接触电阻。此外,还研究了纳米颗粒在紫外光照射下降解亚甲基蓝的光催化活性。通过测定纳米颗粒的循环次数和循环频率对其催化活性进行排序。结果表明,3.0%的ce掺杂提高了ZnO的光催化活性,在120 min内降解了95.8%的MB。这些结果表明,铈掺杂ZnO作为一种有效的环境净化材料具有很大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cost-effective synthesized Ce-doped ZnO nanoflowers for efficient photocatalytic dye degradation
In this study, we present the synthesis and characterisation of Ce-doped ZnO nanostructures utilizing the SILAR approach. The effect of Ce-doping on the structure, optical, electrical, and photocatalytic activity of ZnO nanoflowers was investigated in detail. Microscope images confirmed that the ZnO nanoparticles had a nanoflower-like shape. Mapping analysis confirmed that the Ce ions were uniformly distributed in the ZnO matrix. The incorporation of Ce influenced the material's surface features, leading to an increase in surface roughness. The diffraction result showed that the size of the crystals increased from 57.3 to 60.3 nm with 5.0 % Ce-doping. The FTIR spectra of the samples showed the Ce–O bonds in the region of 510–1000 cm−1. Systematic reduction of the band gap from 3.24 to 3.05 eV was observed with increasing concentration of Ce from 0.0 to 5.0 %. It was also found that the surface roughness also affected the electrical properties and increased the specific contact resistance with Ce doping. Furthermore, the photocatalytic activity of the nanoparticles was also investigated for the degradation of methylene blue under UV-light irradiation. The turnover number and turnover frequency were also determined to rank the catalytic activity of the fabricated nanoparticles. The results indicated that 3.0 % Ce-doping enhanced the photocatalytic activity and degraded 95.8 % MB within 120 min. These findings indicate that cerium-doped ZnO shows great potential as an effective material for environmental purification processes.
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来源期刊
Physica B-condensed Matter
Physica B-condensed Matter 物理-物理:凝聚态物理
CiteScore
4.90
自引率
7.10%
发文量
703
审稿时长
44 days
期刊介绍: Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces
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