Enhanced acetone gas sensor via TiO2 nanofiber-NiO nanoparticle heterojunction

IF 3.4 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Jiyeon Lee, Hyojung Kim, Muhammad Hilal, Zhicheng Cai
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引用次数: 0

Abstract

We present a high surface area sensor comprising NiO nanoparticles (NPs) incorporated within porous TiO2 nanofibers (NFs), showing a remarkable response to acetone. Initially, we synthesized Polyvinylpyrrolidone (PVP) NFs containing titanium (Ti) and nickel (Ni) salts using a simple electrospinning method. Subsequent calcination of the PVP NFs led to the formation of NiO NPs embedded within the porous TiO2 NFs. The resulting heterostructure material exhibited a significant response to acetone detection, with a ratio of electrical resistance in air (Ra) to that in the presence of gas (Rg) reaching 83 at its optimal operating temperature of 300 °C. Furthermore, it demonstrated stable performance under high relative humidity conditions.

Abstract Image

通过 TiO2 纳米纤维-NiO 纳米粒子异质结强化丙酮气体传感器
我们展示了一种高比表面积传感器,它由多孔二氧化钛纳米纤维(NFs)中的氧化镍纳米颗粒(NPs)组成,对丙酮有显著的反应。最初,我们采用简单的电纺丝方法合成了含有钛(Ti)和镍(Ni)盐的聚乙烯吡咯烷酮(PVP)纳米纤维。随后对 PVP NFs 进行煅烧,形成了嵌入多孔 TiO2 NFs 中的 NiO NPs。由此产生的异质结构材料对丙酮检测有显著的响应,在 300 °C 的最佳工作温度下,空气中的电阻(Ra)与气体存在时的电阻(Rg)之比达到 83。此外,它在高相对湿度条件下也表现出稳定的性能。
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来源期刊
Solid State Sciences
Solid State Sciences 化学-无机化学与核化学
CiteScore
6.60
自引率
2.90%
发文量
214
审稿时长
27 days
期刊介绍: Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.
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