相关实验视频

Updated: Jun 13, 2025

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

碳基材料在联合吸附/臭氧化中用于在约束接触时间下的色染料脱色

Naghmeh Fallah¹, Ermelinda Bloise^1,2, Elisa I García-López³

¹Department of Engineering for Innovation, University of Salento, Via Monteroni, 73100 Lecce, Italy.

Molecules (Basel, Switzerland)

|September 14, 2024

概括

催化臭氧化使用碳催化剂快速漂白蓝色染料,在120秒内实现99%以上的去除. 机制涉及催化剂相互作用,pH值和吸附,多壁碳纳米管表现出卓越的性能.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

色染料污染给环境带来了挑战.
传统的染料处理方法可能是低效或昂贵的.
催化臭氧化为废水处理提供了一个有前途的先进氧化工艺.

研究的目的:

通过催化臭氧化评估四种基于碳的催化剂,用于通过催化臭氧化进行印花染料漂白.
研究在短接触时间下催化臭氧化的效率和机制.
评估吸附在青染料催化臭氧化中的作用.

主要方法:

使用活性炭 (AC),多壁碳纳米管 (MWCNT),石墨碳化物 (g-C3N4) 和C3N4-TE的催化臭氧化实验.
原硫酸盐 (ITS) 染料的降解.
分析受PZC,pKa和pH影响的反应机制.
吸附性研究,以确定催化剂的染料吸收.

主要成果:

所有催化剂在120秒内实现了99%以上的色染料色化.
多壁碳纳米管 (MWCNT) 呈现出最高的吸附效率 (在60年内去除43.4%的颜色).
尽管其表面积很小,但C3N4-TE显示出显著的效率,表明其内在的催化活性.

结论:

催化臭氧化是一种高效和快速的方法来去除色染料.
催化剂的特性,包括表面积和表面化学 (PZC,pKa),显著影响效率.
MWCNT和AC是工业粉染料废水处理的有希望的催化剂.

关键词:

活性炭活性炭的使用方法碳化物碳化物催化臭氧化催化臭氧化印第戈色染料印第戈色染料多壁碳纳米管是多壁的碳纳米管.

更多相关视频

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

Published on: March 29, 2019

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

Published on: February 1, 2020

相关概念视频

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...