Abstract

The physicochemical properties (PCPs) such as density (ρ), apparent molar volume (V_ϕ), viscosity (η), surface tension (γ), friccohesity (σ), activation energy (\(\Delta \mu _{2}^{*}\)), pH and optical study of zinc oxide nanoparticles (ZnO NPs) with folic acid (FA) in water have been reported at 303.15 K. The dispersion activity of ZnO NPs was studied in different six concentrations (25–150 µM) with 25 step at predetermined time (freshly prepared and after one-week). Survismeter was used to record the pendant drop number (PDN) and viscous flow time (VFT) of nanofluids and used for further calculations with the aid of Man Singh equations and the estimated data were regressed. The optical behavior were examined using UV–Vis spectrophotometer and the optical density varied by with the concentration of NPs. The results depicted the potential impact of ZnO NPs in the term of solute–solvent and solute–solute interactions. The experimental analysis showed the dominating solute–solvent interaction over solute–solute interaction with increasing concentration of ZnO NPs and this may help to develop the NPs dispersion activity in liquids for various application.

中文翻译：

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T = 303.15 K 叶酸溶液中氧化锌纳米分散体的理化分析

摘要

物理化学性质 (PCP)，例如密度 (ρ)、表观摩尔体积 ( V _phi )、粘度 (η)、表面张力 (γ)、摩擦粘性 (σ)、活化能 ( \(\Delta \mu _{2} ^{*}\)），氧化锌纳米粒子（ZnO NPs）与叶酸（FA）在水中的pH和光学研究已在303.15 K下进行了报道。ZnO NPs的分散活性在不同的六种浓度（25- 150 µM），在预定时间（新鲜制备和一周后）进行 25 个步骤。使用生存计记录纳米流体的悬滴数（PDN）和粘流时间（VFT），并借助Man Singh方程进行进一步计算并对估计数据进行回归。使用紫外-可见分光光度计检查光学行为，光密度随纳米粒子的浓度变化。结果描述了 ZnO NPs 在溶质-溶剂和溶质-溶质相互作用方面的潜在影响。实验分析表明，随着 ZnO 纳米粒子浓度的增加，溶质-溶剂相互作用占溶质-溶质相互作用的主导地位，这可能有助于开发纳米​​粒子在液体中的分散活性，用于各种应用。