Mesoporous and thermally stable phenol red encapsulated Ag-SiO2 and zincite decorated Ag-SiO2 opto-chemical Sensor

被引：6

作者：

Alshoaibi, Adil ^{[1
]}

Islam, Shumaila ^{[1
]}

机构：

[1] King Faisal Univ, Coll Sci, Dept Phys, POB 400, Al Hasa 31982, Hofuf, Saudi Arabia

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2024年 / 702卷

关键词：

Sol-gel method; Silver nanoparticles; Phenol red dye; PH sensing; Zinc oxide nanoparticles; RAMAN-SCATTERING; SILICA; ANTIBACTERIAL; REMOVAL; CARBON;

D O I：

10.1016/j.colsurfa.2024.135075

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sol-gel-based silver-doped silicon dioxide (Ag-SiO2) and zincite-decorated silver-doped silicon dioxide (Z-AgSiO2) are synthesized at low temperatures (80 degrees C). The pH indicator dye phenol red (PR) is encapsulated in AgSiO2 (AS) and Z-Ag-SiO2 (ZAS) for pH assessment at dynamic pH 12. Thermally stable PR encapsulated AS nanocomposite and PR encapsulated ZAS nanocomposite revealed porous nanostructure with a crystallite size of approximately 0.85 nm and 1.21 nm. The PR/AS and PR/ZAS nanocomposites also feature a surface area of about 438 m 2 g- 1 and 370 m2g- 1 , respectively. The PR/AS and PR/ZAS demonstrate a pKa of 10.9 and 10.2 at 560 nm, and a rapid color response of approximately 0.46 s and 0.25 s at pH 12.

引用

页数：7

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