Hydrothermal synthesis of arginine decorated NaxLiyPr(MoO4)2:Tb3+ and NaxLiyPr(WO4)2:Tb3+ nanomaterials: photocatalytic degradation and luminescent sensing of picric acid in an aqueous medium†
Swaita Devi, Charanjeet Sen, Nidhi Bhagat, Richa Singhaal and Haq Nawaz Sheikh
{"title":"Hydrothermal synthesis of arginine decorated NaxLiyPr(MoO4)2:Tb3+ and NaxLiyPr(WO4)2:Tb3+ nanomaterials: photocatalytic degradation and luminescent sensing of picric acid in an aqueous medium†","authors":"Swaita Devi, Charanjeet Sen, Nidhi Bhagat, Richa Singhaal and Haq Nawaz Sheikh","doi":"10.1039/D4NJ02567A","DOIUrl":null,"url":null,"abstract":"<p >Many common explosives are mostly composed of nitro-compounds. Picric acid (PA) has emerged as a potential alternative due to its great explosive capability. Moreover, PA is also a serious groundwater contaminant due to its high-water solubility. As a result, the development of advanced sensors and catalysts to enable the precise detection and elimination of PA in water and food samples is critical for public health and the environment. In the present investigation, we developed Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(MoO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg and Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(WO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg (<em>x</em> = 10 mmol and <em>y</em> = 5 mmol) <em>via</em> a hydrothermal process and established their potency for photoluminescence (PL) detection and photocatalytic degradation of PA. The characterization of the produced nanoparticles was done by various techniques. The PL characteristics of Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(MoO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg show that it is highly sensitive and selectively detects PA in an aqueous medium. The predominant emission band at 545 nm exhibited a distinguished quenching with the introduction of PA solution in the colloidal solution of the prepared nanomaterials. The Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(MoO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg demonstrated exceptional selectivity and sensitivity against PA, with a limit of detection (LOD) of 0.44 ppm and a quenching constant (<em>K</em><small><sub>SV</sub></small>) of 2.74 × 10<small><sup>4</sup></small> M<small><sup>−1</sup></small>. Alternatively, the Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(WO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg showed remarkable photocatalytic activity for PA degradation. The UV-Vis spectroscopy findings specify that Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(WO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg (<em>E</em><small><sub>g</sub></small> = 2.95 eV) might operate as a superior photocatalyst compared to Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(MoO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg (<em>E</em><small><sub>g</sub></small> = 3.38 eV) nanoparticles. The degradation efficacy of Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(WO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg towards PA is around 96.7% within 60 minutes of UV irradiation and the photocatalyst's reusability was monitored to ensure good stability. This remarkable photocatalytic activity of Na<small><sub><em>x</em></sub></small>Li<small><sub><em>y</em></sub></small>Pr(WO<small><sub>4</sub></small>)<small><sub>2</sub></small>:Tb<small><sup>3+</sup></small>@Arg was ascribed to increased migration efficiency of photo-generated electrons and holes.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"New Journal of Chemistry","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/nj/d4nj02567a","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Many common explosives are mostly composed of nitro-compounds. Picric acid (PA) has emerged as a potential alternative due to its great explosive capability. Moreover, PA is also a serious groundwater contaminant due to its high-water solubility. As a result, the development of advanced sensors and catalysts to enable the precise detection and elimination of PA in water and food samples is critical for public health and the environment. In the present investigation, we developed NaxLiyPr(MoO4)2:Tb3+@Arg and NaxLiyPr(WO4)2:Tb3+@Arg (x = 10 mmol and y = 5 mmol) via a hydrothermal process and established their potency for photoluminescence (PL) detection and photocatalytic degradation of PA. The characterization of the produced nanoparticles was done by various techniques. The PL characteristics of NaxLiyPr(MoO4)2:Tb3+@Arg show that it is highly sensitive and selectively detects PA in an aqueous medium. The predominant emission band at 545 nm exhibited a distinguished quenching with the introduction of PA solution in the colloidal solution of the prepared nanomaterials. The NaxLiyPr(MoO4)2:Tb3+@Arg demonstrated exceptional selectivity and sensitivity against PA, with a limit of detection (LOD) of 0.44 ppm and a quenching constant (KSV) of 2.74 × 104 M−1. Alternatively, the NaxLiyPr(WO4)2:Tb3+@Arg showed remarkable photocatalytic activity for PA degradation. The UV-Vis spectroscopy findings specify that NaxLiyPr(WO4)2:Tb3+@Arg (Eg = 2.95 eV) might operate as a superior photocatalyst compared to NaxLiyPr(MoO4)2:Tb3+@Arg (Eg = 3.38 eV) nanoparticles. The degradation efficacy of NaxLiyPr(WO4)2:Tb3+@Arg towards PA is around 96.7% within 60 minutes of UV irradiation and the photocatalyst's reusability was monitored to ensure good stability. This remarkable photocatalytic activity of NaxLiyPr(WO4)2:Tb3+@Arg was ascribed to increased migration efficiency of photo-generated electrons and holes.