{"title":"Preparation of BiVO4-La2O3 Nanocomposite for Highly Responsive Trace Nitrogen Dioxide Gas Sensor","authors":"Zhen Zhu, Wang-De Lin","doi":"10.1007/s10876-025-02901-3","DOIUrl":null,"url":null,"abstract":"<div><p>This study presents a series of high-sensitivity sensors based on BiVO<sub>4</sub>-La<sub>2</sub>O<sub>3</sub> (Bismuth vanadate-Lanthanum oxide). nanocomposite, synthesized using a simple hydrothermal process for the detection of NO<sub>2</sub> 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). BiVO<sub>4</sub>-La<sub>2</sub>O<sub>3</sub> achieved excellent NO<sub>2</sub> 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 (T<sub>90</sub> = 76 s) and recovery (T<sub>r90</sub> = 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.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 5","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Cluster Science","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10876-025-02901-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
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 (Tr90 = 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.
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.
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