Results 11 to 20 of about 20,924 (241)

Removal of Azo Dyes from Aqueous Effluent Using Bio-Based Activated Carbons: Toxicity Aspects and Environmental Impact

open access: yesSeparations, 2023
Rapid growth in various industrial fields has introduced a series of new environmental risks. The textile industry is one of the major industries that is influenced by rapid advancements in technological sectors.
Ahmed Elsayid Ali   +11 more
doaj   +1 more source

Physico-analytical studies on some heterocyclic azo dyes and their metal complexes with some transition metals

open access: yesBMC Chemistry, 2022
In this investigation, the azo dyes; 2-(3′-phenyl-5′-pyrazolyl azo) schaffer acid (la) and 2-(3′-phenyl-5′-pyrazolyl azo) resorcinol (Ib); were prepared through diazotizing 3-phenyl-5-aminopyrazole (PAP) and coupling the resulting diazonium salt with ...
Fathy A. El-Seify   +4 more
doaj   +1 more source

Classifications, properties, recent synthesis and applications of azo dyes

open access: yesHeliyon, 2020
In this work, we have presented a very detailed review of the different classification of azo dyes as a function of the number of azo groups and the appropriate functional groups.
Said Benkhaya   +2 more
doaj   +1 more source

Recent review on Synthesis, spectral Studies, versatile applications of azo dyes and its metal complexes

open access: yesResults in Chemistry, 2023
The review paper strives to concentrate on the categorization and diverse synthesis techniques of azo dyes and their complexes over the past ten years.
Roohinaz Khanum   +5 more
doaj   +1 more source

Synthetic utility of 5-amino-6-cyano-2-phenylthieno[2,3-d] oxazole [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
This paper describes the synthesis of 5-amino-6-cyano-2-phenylthieno[ 2,3-d]oxazole and its utilization for the preparation of a range of azo disperse dyes.
Kanetkar V.R., Walavalkar R.R.
doaj   +3 more sources

Biodegradation of azo dyes by bacterial or fungal consortium and identification of the biodegradation products

open access: yesEgyptian Journal of Aquatic Research, 2021
Fifteen azo dyes were subjected to microbial degradation by four fungal strains and their mixtures as well as five bacterial strains and their mixtures. The biodegradation efficiency was determined by LC/MS/MS analysis.
Wafaa M. Abd El-Rahim   +3 more
doaj   +1 more source

Azo‐Dye Rotaxanes

open access: yesAngewandte Chemie International Edition in English, 1997
The hydrophobic effect was used to assemble encapsulated azo dyes such as 1 in water. The dumbbell-shaped dyes were synthesized inside α-cyclodextrin, β-cyclodextrin, or a cyclophane to yield stable rotaxanes.
Anderson, S, Claridge, T, Anderson, H
openaire   +1 more source

Visible-light degradation of azo dyes by imine-linked covalent organic frameworks

open access: yesGreen Energy & Environment, 2023
Covalent organic frameworks (COFs) are nanoporous crystalline polymers with densely conjugated structures. This work discovers that imine-linked COFs exhibit remarkable photodegradation efficiency to azo dyes dissolved in water.
Hongbo Xue, Sen Xiong, Kai Mi, Yong Wang
doaj   +1 more source

Application of systematic evidence mapping to identify available data on the potential human health hazards of selected market-relevant azo dyes

open access: yesEnvironment International, 2023
Background: Azo dyes are used in textiles and leather clothing. Human exposure can occur from wearing textiles containing azo dyes. Since the body’s enzymes and microbiome can cleave azo dyes, potentially resulting in mutagenic or carcinogenic ...
Channa Keshava   +14 more
doaj   +1 more source

Polyaniline/attapulgite-supported nanoscale zero-valent iron for the rival removal of azo dyes in aqueous solution

open access: yesAdsorption Science & Technology, 2019
In this paper, polyaniline/attapulgite (PANI/APT)-supported nanoscale zero-valent iron (nZVI) composites were synthesized by liquid-phase chemical reduction method and used for the removal of two kinds of dyes.
Hui Xu   +5 more
doaj   +1 more source

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