草皮状介孔CTAB辅助二氧化硅纳米颗粒的室温生长：增强玫瑰红光化学传感

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-04-24 DOI:10.1016/j.molliq.2025.127655

Shumaila Islam

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引用次数: 0

摘要

采用溶胶-凝胶法在室温下合成了二氧化硅纳米颗粒。十六烷基三甲基溴化铵（CTAB）作为介孔snp的表面导向剂。ctab辅助SNPs （C-SNPs）呈现草皮状纳米颗粒结构，平均表面粗糙度（Ra）在4 nm左右，晶粒尺寸在71 ~ 91 nm之间，厚度在19 nm左右。c - snp的表面积约为381 m2/g，孔体积约为0.81 cm3/g，平均孔径约为5 nm。C- snps在460℃后表现出热稳定性。在564 nm下，红bengal包封的C-SNPs （RB/C-SNPs）的pKa（酸解离常数的负对数）约为8.9，在pH 12下的颜色响应约0.3 s，没有任何浸出痕迹。实验结果表明，RB/ c - snp溶胶在与日常生活相关的挑战性水介质中具有显著的传感应用潜力。

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Room temperature growth of Turf-Shaped mesoporous CTAB assisted silica Nanoparticles: Towards enhanced rose bengal Opto-Chemical sensing

Sol-gel method is employed to synthesize the silica nanoparticles (SNPs) at room temperature. Cetyltrimethylammonium bromide (CTAB) was used as a surface-directing agent for mesoporous SNPs. The CTAB-assisted SNPs (C-SNPs) exhibited turf-shaped nanoparticle structure with low average surface roughness (Ra) around 4 nm, grain size within the range of 71 nm-91 nm, and thickness around 19 nm. The C-SNPs possessed a surface area of around 381 m²/g, a pore volume of approximately 0.81 cm³/g, and an average pore size of around 5 nm. The C-SNPs revealed thermally stable after 460 °C temperature. The rose bengal encapsulated C-SNPs (RB/C-SNPs) exhibited pKa (negative log of the acid dissociation constant) around 8.9 at 564 nm, color response ∼ 0.3 s in pH 12, without any leaching traces. Experimental findings suggest that the RB/C-SNPs sol possesses significant potential for sensing applications in challenging aqueous media relevant to daily life.

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.