相关实验视频

Updated: Jun 11, 2025

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

Published on: April 11, 2020

粉纳米晶体上的阴离子染料的吸附行为:从单个到多组件系统的动力学,异热和热力学见解

Mohammad Javad Amiri¹, Maryam Raayatpisheh²

¹Department of Water Science and Engineering, Faculty of Agriculture, Fasa University, Fasa 74616-86131, Iran; Research Institute of Water Resources Management in Arid Region, Fasa University, Fasa 74616-86131, Iran.

International journal of biological macromolecules

|October 9, 2024

概括

粉纳米晶 (SNCs) 有效地从水中去除甲蓝色,水晶紫色和马拉绿色染料. 这些可持续的纳米晶体具有很高的吸附能力,可以重复使用,为染料废水处理提供了高效的解决方案.

科学领域:

材料科学:用于环境修复的纳米材料.
环境化学:从水溶液中吸附有机污染物.

背景情况:

由合成染料污染的废水构成了重大的环境挑战.
开发具有成本效益和可持续的吸附剂对于去除染料至关重要.
粉纳米晶 (SNCs) 提供了一个可生物降解和可再生的吸附平台.

研究的目的:

评估粉纳米晶体 (SNC) 的吸附潜力,以去除甲蓝 (MB),水晶紫 (CV) 和马拉绿 (MG) 染料.
在单一,二进制和三进制染料系统中研究染料吸附.
描述SNC并了解吸附机制和动力学.

主要方法:

从原生颗粒性粉中提取SNC,通过轻度酸性水解.
使用FESEM,XRD,FTIR,BET,TGA和pH_ZPC测量的SNC的表征.
批量模式吸附实验以确定最佳pH值,平衡时间和吸附能力.

主要成果:

发现染料去除的最佳pH值为9.0.
均衡时间随着染料系统的复杂性增加 (单 <二进制 <三进制).
兰慕尔和扩展的兰慕尔模型准确地描述了单一和混合染料系统的吸附数据.
在单一,二进制 (MB+MG) 和三进制 (MB+CV+MG) 系统中观察到MB的最高吸附能力.
吸附遵循伪二次动力学,是自发的和内热的.
美国国有企业证明了可重复使用的多达五个周期 (单一染料) 和三个周期 (混合染料).

结论:

粉纳米晶是各种水系统中MB,CV和MG染料的有效吸附剂.
SNCs具有良好的可重复使用性和吸附性能,表明其作为可持续吸附剂的潜力.
该研究强调了跨国企业在有效和环保地从工业废水中去除染料方面的可行性.

关键词:

恒温的内热方式 (Endothermic)扩展的Langmuir模型在 N-π 堆叠中.三级系统的第三级系统.

更多相关视频

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Analysis and Specification of Starch Granule Size Distributions

Analysis and Specification of Starch Granule Size Distributions

Published on: March 4, 2021

相关概念视频

Analyte Adsorption and Distribution

Analyte Adsorption and Distribution

In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...

Precipitation of Ions

Precipitation of Ions

Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:

Redox Titration: Iodimetry and Iodometry

Redox Titration: Iodimetry and Iodometry

Iodometry and iodimetry are analytical methods used to determine the concentration of oxidizing or reducing agents using iodine. In iodometric titrations, the oxidizing analyte solution is usually acidified and treated with an excess of iodide ions, which generates an equivalent amount of iodine in equilibrium with triiodide. The released iodine is subsequently titrated directly against a standardized reducing agent. As the dilute iodine color becomes pale yellow, a few drops of freshly...