显著增强了在室温下操作的新型结构Au-TiO2-SnO2的乙醛传感

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-05-26 DOI:10.1016/j.physb.2025.417433

Wenbo Chen , Zhongyan Gao , Jiajie Huang , Zhaohong Li , Yukang Peng , Yangguang Ran , Zhongtao Qin , Ningjing Wang , Qinping Qiang , Bitao Liu

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引用次数: 0

摘要

通过微观和宏观尺度的表面结构修饰，设计了一种层次化的Au-TiO2-SnO2复合材料。结果表明，这种类型的Au-TiO2-SnO2可以引入稳定的氧空位，从而提高室温下对乙醛的气体响应和选择性。在100 ppm时，对乙醛的气体响应可达11.4，是TiO2-SnO2的2.3倍。这种增强和选择性归因于金纳米粒子的氧空位、异质结构和表面等离子体共振（SPR）效应的协同作用，这有助于增加表面正电荷。

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Remarkably enhanced acetaldehyde sensing of a novel structured Au-TiO2-SnO2 operating at room temperature

A hierarchical Au-TiO₂-SnO₂ composite was designed through surface structure modifications at both micro and macro scales. The results indicate that this type of Au-TiO₂-SnO₂ can introduce stable oxygen vacancies, which subsequently enhance gas response and selectivity toward acetaldehyde at room temperature. The gas response to acetaldehyde can reach 11.4 at 100 ppm, which is 2.3 times higher than that of TiO₂-SnO₂. This enhancement and selectivity are attributed to the synergistic effects of the oxygen vacancies, heterostructure, and the surface plasmon resonance (SPR) effect of Au nanoparticles, which contribute to a more positive surface charge.

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来源期刊

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