Enhanced pH sensing performance: Multi-dye encapsulated Ag-doped SiO2 and zincite supported nanocomposite with ultra-fast response time

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2025-03-13 DOI:10.1016/j.matchemphys.2025.130718

Shumaila Islam, Adil Alshoaibi

{"title":"Enhanced pH sensing performance: Multi-dye encapsulated Ag-doped SiO2 and zincite supported nanocomposite with ultra-fast response time","authors":"Shumaila Islam, Adil Alshoaibi","doi":"10.1016/j.matchemphys.2025.130718","DOIUrl":null,"url":null,"abstract":"<div><div>Zincite (ZnO)-supported <span>Silver</span> (Ag) doped SiO<sub>2</sub> nanocomposite (ZASNC) is synthesized by sol-gel method at 70 °C. The mixture of phthalein dyes i.e., creosol red (CR), phenolphthalein (PHp), phenol red (PR), and bromophenol blue (BPB) is encapsulated in ASNC (silver doped SiO<sub>2</sub> nanocomposite) and ZASNC for pH sensing assessment at dynamic range 12. Both nanocomposites possessed thermal stability at ≤ 480 °C, porous granular structures, uniform elemental distribution, featuring a tiny crystallite size, large surface area (S<sub>BET</sub>) of about 325 m<sup>2</sup> g<sup>−1</sup> (ASNC) and 387 m<sup>2</sup>g<sup>-1</sup> (ZASNC). Both nanocomposites revealed heterogeneous chemical bonding between Zn, Ag, Si, and functional groups. The MD-ZASNC revealed pKa (negative log of the acid dissociation constant) ∼ 9.5 at 557 nm, response time in terms of color ∼0.5s–0.2s in pH 1–12. These findings highlight the potential of MD-ZASNC across dynamic pH ranges 1–12 for aqueous media sensing for various research domains including environmental and food analysis.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130718"},"PeriodicalIF":4.3000,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Chemistry and Physics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0254058425003645","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Zincite (ZnO)-supported Silver (Ag) doped SiO₂ nanocomposite (ZASNC) is synthesized by sol-gel method at 70 °C. The mixture of phthalein dyes i.e., creosol red (CR), phenolphthalein (PHp), phenol red (PR), and bromophenol blue (BPB) is encapsulated in ASNC (silver doped SiO₂ nanocomposite) and ZASNC for pH sensing assessment at dynamic range 12. Both nanocomposites possessed thermal stability at ≤ 480 °C, porous granular structures, uniform elemental distribution, featuring a tiny crystallite size, large surface area (S_BET) of about 325 m² g⁻¹ (ASNC) and 387 m²g^-1 (ZASNC). Both nanocomposites revealed heterogeneous chemical bonding between Zn, Ag, Si, and functional groups. The MD-ZASNC revealed pKa (negative log of the acid dissociation constant) ∼ 9.5 at 557 nm, response time in terms of color ∼0.5s–0.2s in pH 1–12. These findings highlight the potential of MD-ZASNC across dynamic pH ranges 1–12 for aqueous media sensing for various research domains including environmental and food analysis.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.