酚醛磺酞包封介孔分级锌矿纳米复合溶胶的高性能光化学传感

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-05-10 DOI:10.1016/j.molliq.2025.127750

Shumaila Islam , Adil Alshoaibi , Kawther Alamer , Nada Al Taisan

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引用次数: 0

摘要

采用溶胶-凝胶法在低温（80℃）条件下合成了锌酸盐纳米棒。酚醛磺酞（PR）染料被封装在ZNRs中，用于动态pH感应范围（pH值12）。苯酚红包封锌矿纳米结构（PR-ZNS）复合材料具有叶花瓣状分层结构，均方根（RMS）粗糙度约1.9 nm，晶粒尺寸约18 nm，孔径约4.2 nm，热稳定性高达400°C。PR-ZNS在559 nm处的pKa（酸解常数的负对数）值为9.8。合成的PR-ZNS具有高响应性，可以通过可见色移在pH 12中快速检测pH变化约0.03 s。其快速的颜色响应时间，稳定性和无浸出痕迹使其成为环境监测，农业和食品科学等各种应用中快速有效的pH传感的理想选择。

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High-performance opto-chemical sensing with phenolsulfonphthalein-encapsulated mesoporous hierarchical zincite nanocomposite sol

Zincite nanorods (ZNRs) are synthesized at a low temperature (80 °C) using the sol–gel method. Phenolsulfonphthalein (PR) dye is encapsulated in the ZNRs for dynamic pH sensing range (pH 12). The phenol red encapsulated zincite nanostructure (PR-ZNS) composite exhibited a hierarchically leaf petal-shaped structure, root mean square (RMS) roughness of approximately 1.9 nm, a crystallite size of around 18 nm, a pore size of ∼4.2 nm, and thermal stability up to 400 °C. The PR-ZNS revealed a pKa (negative log of the acid dissociation constant) value of 9.8 at 559 nm. The synthesized PR-ZNS is highly responsive, allowing for rapid naked-eye detection of pH changes of approximately 0.03 s in pH 12 through visible color shifts. Its fast color response time, stability, and no leaching traces make it ideal for quick and efficient pH sensing in various applications such as environmental monitoring, agriculture, and food science.

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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.