The synthetic dyes and chemicals used in industries produce a tremendous amount of contaminated water. Most of the poisonous dyes generated from different textileindustries are released directly to the environment. As a consequence, the discharge of wastewater from a large number of textile industries without prior treatment leads to significant negative impacts on human health. The utilization of efficient and inexpensive nano-adsorbent may reduce the adverse impacts of dyes in the environment due to their unique properties. To alleviate these issues, attention has been paid to develop efficient adsorbents for the removal of undesirable species from wastewater. Efficient and selective removal of dyes is gaining importance to reduce the environmental problems. Comparison of degradation efficiencyfor different catalysts could be a holistic approach that should be taken under consideration owing to search a suitable adsorbent. An in-depth evaluation of extensive variety of advanced adsorbents reported in literature for dye degradation has been furnished. In addition to underscoring the physico-chemical properties of different adsorbents, this review also endorses the mechanisms and efficiencies within the adsorption process. The challenges of dye degradation process are focused to reduce the adverse impacts of dyes in the environment. The critical assessment of next generation adsorbents would presumably be promoted the clean and affordable water purification process in practice.

Step towards the sustainable toxic dyes removal and recycling from aqueous solution- A comprehensive review

Degradation of organic pollutants from water by biochar-assisted advanced oxidation processes: Mechanisms and applications.

A novel Co@MXenes catalyst with unique structure was prepared through randomly anchoring cobalt on 2D sandwich-like MXenes to activate peracetic acid (PAA) for water decontamination. Compared to the conventional Co3O4 nanomaterial, the Co@MXenes catalyst exhibits superior performance for PAA activation under neutral condition. In-depth investigation revealed that the Ti3C2Tx MXene substrate triggered the ≡ Co(III)/≡ Co(II) cycle, which greatly enhanced the activation of PAA. The XPS and ICP techniques further demonstrated that Co@MXenes was highly stable with extremely low cobalt ion leaching and hence a superior reusability was obtained. Moreover, acetylperoxyl radical (CH3CO3 ) was identified as the primary radical species responsible for organic micropollutants degradation, exhibiting high selectivity towards contaminants containing electron-rich groups. The novel technology exhibited a high tolerance of Cl− and good performance in real wastewater treatment. This work provides a promising effective catalyst for PAA activation and will facilitate PAA application in wastewater decontamination.

Activation of peracetic acid with cobalt anchored on 2D sandwich-like MXenes (Co@MXenes) for organic contaminant degradation: High efficiency and contribution of acetylperoxyl radicals

State of the art on the ultrasonic-assisted removal of environmental pollutants using metal-organic frameworks

The low specific surface area, poor porosity, and weak charge transport caused by the disordered morphology of metal-N-site catalysts are the main factors limiting their environmental applications. Therefore, a hollow-nanotube carbon nitride (Cu-HNCN) catalyst with CuNx sites dispersed in a hollow nanotube-like CN was constructed and used for the degradation of organic pollutants via the photo-Fenton (PF) process. The high specific surface area, rich porosity, and good visible-light trapping capability of the Cu-HNCN nanotubes were identified. The Cu-HNCN/PF system achieved 96.0% degradation efficiency of tetracycline within 50 min and showed efficient degradation of various antibiotic contaminants. Moreover, the short Cu-N bonds contributed to the improved stability and decreased copper leaching in the Cu-HNCN/PF system. Cu-HNCN, with its enhanced photogenerated charge generation, separation, and transport, was the key to the generation of abundant active species and efficient degradation of pollutants. In addition, frontier electron density theory successfully distinguished the roles of different types of active species in the degradation process. This work provides new insights into the development of catalysts with high stability and accelerated electron transfer to enhance the application of the PF process in practical wastewater purification. 

Carbon nitride nanotubes anchored with high-density CuNx sites for efficient degradation of antibiotic contaminants under photo-Fenton process: Performance and mechanism

How chemical environment of iron influence active species formation in heterogeneous Fenton processes is poorly understood. Herein, a series of metal organic frameworks (MOFs) with various substituents (UiO-66-X) were prepared as templates for iron chemical environment regulation. The results show that bisphenol A (BPA) degraded in the system modified with electron-donating groups (X = NH2, OH, OCH3) was predominantly attributed to HO . While Fe(IV) was detected in systems modified with electron-withdrawing groups (X = Cl, F, NO2). The introduction of electron-donating groups on FeOx@UiO-66-X increases the length of Fe-O bond from 2.06 to 2.12 A, and reduces the binding energy of H2O2 on FeOx, which were beneficial for HO generation. However, electron-withdrawing groups (X = Cl, F, NO2) reduces the Fe-O bond length to 1.99 A, and generates transition product Fe(IV) O. Consequently, this research contributes to the first mechanistic insight into active species regulation during Fenton-like processes by manipulating substituents on MOFs ligand.

Exploring mechanisms of different active species formation in heterogeneous Fenton systems by regulating iron chemical environment

Bimetallic Fenton catalyst has attracted widespread attention in refractory organics removal. Herein, we firstly investigated the influence of ZrO2 structure features on H2O2 activation in Zr-Fe bimetallic catalyst. The results show that the heterojunction structure will be formed after high temperature calcination, which makes the ability of Zr-Fe bimetallic catalyst to activate H2O2 for bisphenol A degradation is 3.1 times higher than that of α-Fe2O3 without Zr doping. Through characterization and density functional theory, it was identified that compared to (1 1 0) interface, the adsorption energy of H2O2 on iron sites at (1 1 0)-(1 0 0) interface reduced by 1.27 kJ mol−1, while the Fe–O bond length in the stable configuration of Fe-OOH increased by 0.16 A, which was beneficial to the association and dissociation of H2O2 on iron sites. Besides, the surface -OH of amorphous ZrO2 in Zr-Fe bimetallic catalyst synthesized under low temperature conditions could promote HO2•/O2•- formation through the surface electron transfer, accelerating the Fe(III) reduction. In conclusion, this study reveals the influence of environment-friendly ZrO2 structure features on H2O2 activation, proposes a new insight into strengthening the synergistic effect between bimetals, and provides a reference for the structural optimization of bimetallic catalysts.

Exploring the mechanism of ZrO2 structure features on H2O2 activation in Zr–Fe bimetallic catalyst

Electron-rich oxygen enhanced Fe-doped g-C3N4 mediated Fenton-like process: Accelerate Fe(III) reduction and strengthen catalyst stability

Different combined systems with Fenton-like oxidation and ultrafiltration for industrial wastewater treatment

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Xiaoyang Li

Author Tools

Chat about Author

Papers

Exploring mechanisms of different active species formation in heterogeneous Fenton systems by regulating iron chemical environment

Exploring the mechanism of ZrO2 structure features on H2O2 activation in Zr–Fe bimetallic catalyst

Electron-rich oxygen enhanced Fe-doped g-C3N4 mediated Fenton-like process: Accelerate Fe(III) reduction and strengthen catalyst stability

Different combined systems with Fenton-like oxidation and ultrafiltration for industrial wastewater treatment