{"title":"BaWO4:Eu³⁺, Ag⁺ Nanocatalyst for Efficient Reduction of 4-Nitrophenol in Aqueous Solution","authors":"Dasrathi Murmu, Rajkumari Bindiya Devi, Ningombam Yaiphaba, Bibhuti Bhusan Parida, Ganngam Phaomei","doi":"10.1007/s10562-025-05183-6","DOIUrl":null,"url":null,"abstract":"<div><p>BaWO<sub>4</sub> nanoparticles doped and co-doped with various metal ions like Eu<sup>3+</sup>, Ag<sup>+</sup>, Li<sup>+</sup>, Zn<sup>2+</sup> and Bi<sup>3+</sup>, etc., are synthesized using a simple polyol route. The synthesized NPs were characterized by XRD, TEM, XPS, EDX and a UV-VIS spectrometer. From the TEM image, the NPs are spherical in shape with an average particle size of 15 nm. The band gap of the NPs is calculated using Tauc’s plot, and it is found to change with the concentration of co-dopant ions and the pH of the synthesis medium. The crystal size, crystallinity %, and lattice strain are calculated from the XRD data and it is found that BaWO<sub>4</sub>:Eu<sup>3+</sup>, Ag<sup>+</sup> NPs have a smaller size and larger strain. However, this nanoparticle demonstrated better catalytic activity in reducing the organic pollutant, 4-Nitrophenol (4-NP). The rate constant (k) for the reduction of 4-NP is 6.14 × 10<sup>−3</sup> s<sup>-1</sup>. The catalyst is stable and can be reused for five consecutive cycles.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 10","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-025-05183-6","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
BaWO4 nanoparticles doped and co-doped with various metal ions like Eu3+, Ag+, Li+, Zn2+ and Bi3+, etc., are synthesized using a simple polyol route. The synthesized NPs were characterized by XRD, TEM, XPS, EDX and a UV-VIS spectrometer. From the TEM image, the NPs are spherical in shape with an average particle size of 15 nm. The band gap of the NPs is calculated using Tauc’s plot, and it is found to change with the concentration of co-dopant ions and the pH of the synthesis medium. The crystal size, crystallinity %, and lattice strain are calculated from the XRD data and it is found that BaWO4:Eu3+, Ag+ NPs have a smaller size and larger strain. However, this nanoparticle demonstrated better catalytic activity in reducing the organic pollutant, 4-Nitrophenol (4-NP). The rate constant (k) for the reduction of 4-NP is 6.14 × 10−3 s-1. The catalyst is stable and can be reused for five consecutive cycles.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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