高响应量二氧化氮气体传感器用BiVO4-La2O3纳米复合材料的制备

IF 3.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Cluster Science Pub Date : 2025-09-09 DOI:10.1007/s10876-025-02901-3

Zhen Zhu, Wang-De Lin

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引用次数: 0

摘要

本研究提出了一系列基于BiVO4-La2O3（钒酸铋-氧化镧）的高灵敏度传感器。采用简单的水热法合成纳米复合材料，用于室温下NO2气体的检测。采用x射线衍射（XRD）、紫外可见光谱（UV-vis）和傅里叶变换红外光谱（FTIR）对制备的样品进行了表征。BiVO4-La2O3具有优异的NO2气体传感性能，包括在浓度范围为0.1 ppm至10 ppm时的高传感器响应率（Rg/Ra）为13.5，以及在0.1 ppm时的快速响应（T90 = 76 s）和回收（Tr90 = 66 s）时间。这些结果证明了BiVO₄-La₂O₃纳米复合材料在室温下可靠地检测ppb级NO₂的潜力。

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Preparation of BiVO4-La2O3 Nanocomposite for Highly Responsive Trace Nitrogen Dioxide Gas Sensor

This study presents a series of high-sensitivity sensors based on BiVO₄-La₂O₃ (Bismuth vanadate-Lanthanum oxide). nanocomposite, synthesized using a simple hydrothermal process for the detection of NO₂ gas at room temperature. As-prepared samples were characterized using X-ray diffraction (XRD), ultraviolet visible spectroscopy (UV-vis), and Fourier transform infrared spectroscopy (FTIR). BiVO₄-La₂O₃ achieved excellent NO₂ gas sensing performance, including high sensor responsivity (Rg/Ra) of 13.5 at concentrations ranging from 0.1 ppm to 10 ppm, as well as fast response (T₉₀ = 76 s) and recovery (T_r90 = 66 s) times at 0.1 ppm. These results demonstrate the potential of BiVO₄–La₂O₃ nanocomposites for reliable ppb-level NO₂ detection at room temperature.

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来源期刊

Journal of Cluster Science 化学-无机化学与核化学

CiteScore

6.70

自引率

0.00%

发文量

166

审稿时长

3 months

期刊介绍： The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.