Synthesis, Characterization, and Application of an Ecofriendly C/TiO₂ Composite to Efficiently Remove Reactive Black 5 (RB-5) Textile Dye from Aqueous Solutions

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

The textile industry is known for its high water consumption and production of toxic effluents, including azo dyes such as Reactive Black 5 (RB-5), which are resistant to removal. Adsorption offers a promising, cost-effective solution, particularly with value-added composites made from abundant materials. This study synthesized, characterized, applied C/TiO2-based composite remove RB-5 water. XRD analysis only confirmed anatase the primary support, while FTIR detected adsorbate molecules on C/TiO2 surface, marked by appearance sulfone group band. Raman XPS analyses indicated reduced Sp2 carbon content lower graphitization after adsorption, probably due mechanical stress. Additionally, nitrogen physisorption demonstrated that material mesoporous, surface area 56.24 m2 g–1, pore diameter 9.41 nm. exhibited strong affinity anionic species like RB-5, especially at pH values below point zero charge (7.47). Batch studies Avrami kinetic adsorption rate 0.3023 min–1 (at 25 °C), temperature effects followed Arrhenius model, an activation energy +41.10 kJ mol–1. Sips isotherm data maximum capacity 17.48 mg g–1 55 °C. Thermodynamic entropically controlled, endothermic, spontaneous process temperatures. These aspects confirm potential eco-friendly effective removal aqueous solutions.

Language: Английский

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Green Synthesis of Copper Oxide Nanoparticles using Euphorbia heterophylla Leaf Extract for Deactivation of Pathogenic Bacteria and Photocatalytic Degradation of Industrial Dyes

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104797 - 104797

Published: April 1, 2025

Language: Английский

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Photocatalytic degradation of sulfamethazine using g-C3N4/TiO2 heterojunction photocatalyst: Performance, mechanism insight and degradation pathway

Materials Science in Semiconductor Processing, Journal Year: 2024, Volume and Issue: 181, P. 108595 - 108595

Published: June 12, 2024

Language: Английский

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Efficient electrochemical degradation of X-GN dye wastewater using porous boron-doped diamond electrode

Chemosphere, Journal Year: 2022, Volume and Issue: 307, P. 135912 - 135912

Published: Aug. 5, 2022

Language: Английский

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Rapid adsorption of sulfamethazine on mesoporous graphene produced from plastic waste: optimization, mechanism, isotherms, kinetics, and thermodynamics

International Journal of Environmental Science and Technology, Journal Year: 2022, Volume and Issue: 20(9), P. 9717 - 9732

Published: Nov. 11, 2022

Abstract Sulfonamide antibiotics like sulfamethazine (SMZ) can threaten aquatic and terrestrial life even in small concentrations (≤ 1 mg/L); hence, their removal from wastewater is indispensable. However, the need to explore new promising adsorbents that are cheap, effective, reusable also remains crucial developing adsorption technology. This work presents a one-pot solvent-free conversion of current most ubiquitous anthropogenic bio-resistant solid waste (plastics) into valuable carbon materials remove SMZ aqueous solution. High-density polyethylene was pyrolyzed at 500–1000 °C an enclosed stainless-steel reactor produce mesoporous graphene. The graphene products were characterized via microscopic spectroscopic analyses. effect temperature on yield properties investigated. optimum achieved with 600 product (CP-600) due its high porosity aromatic structure. parameters (pH, catalyst dose, concentration) optimized by response surface methodology (RSM) central composite design. 99.99% 0.9 g/L adsorbent 12.4 mg/L concentration, pH 3 25 °C. FTIR analysis revealed occurred mainly π–π/π + –π electron interactions between pyrimidine rings benzene ring graphitic CP-600. followed pseudo-second-order kinetics, Langmuir, Freundlich isotherm models. controlled film intraparticle diffusion spontaneous endothermic. synthesized this rapidly more than other adsorbents.

Language: Английский

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Accelerated Photolysis of H₂O₂ at the Air–Water Interface of a Microdroplet

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 1, 2023

Photochemical homolysis of hydrogen peroxide (H2O2) occurs widely in nature and is a key source hydroxyl radicals (·OH). The kinetics H2O2 photolysis play pivotal role determining the efficiency ·OH production, which currently mainly investigated bulk systems. Here, we report considerably accelerated at air–water interface microdroplets, with rate 1.9 × 103 times faster than that water. Our simulations show due to trans quasiplanar conformational preference compared or gas phase, absorption peak spectrum significantly redshifted by 45 nm, corresponding greater absorbance photons sunlight H2O2. This discovery has great potential solve current problems associated ·OH-centered heterogeneous photochemical processes aerosols. For instance, microdroplets could lead markedly enhanced oxidation SO2 volatile organic compounds.

Language: Английский

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A critical review on the degradation mechanism of textile effluent during electrocatalytic oxidation: Removal optimization and degradation pathways

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(6), P. 111277 - 111277

Published: Oct. 19, 2023

Language: Английский

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Sustainable removal of antipyrine from wastewater via an Eco-Friendly heterogeneous Electro-Fenton-like process employing Zero-Valent iron nanoparticles loaded activated carbon

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152494 - 152494

Published: May 23, 2024

This study addresses the growing environmental and health concern associated with pharmaceutical compounds detected in wastewater by employing an innovative environmentally friendly approach. Polyphenol reducing agents were extracted from palm petiole (PP) using a coffee marker to synthesize zero-valent iron nanoparticles (P-NZVI) sustainable manner. The residual PP materials after extraction used prepare eco-friendly activated carbon (AC). Subsequently, syntetized P-NZVIwere integrated AC form composite AC-NZVI. After physical–chemical characterization of developed materials, AC-NZVI evaluated as catalysts heterogeneous electro-Fenton-like (EFL) process, boron-doped diamond (BDD) anode carbon-felt (CF) cathode enhance antipyrine (ATP) degradation. investigates influential factors such catalyst dosage, pH, current density, scavengers' presence water matrices effect. Results showcase remarkable 97 % ATP removal efficiency low energy consumption (EC) 0.0683 kWh/g over 60 min EFL deionized 1.4 g/L at density 10 mA/cm2. Quenching experiments emphasize hydroxyl radicals HO∙ predominant species, particularly acidic conditions. Notably, exhibits high efficiencies even real wastewater, achieving 87 removal. confirms recyclability stability five cycles, confirmed comprehensive analyses, including FTIR, XPS, Raman, XRD, mineralization 84 within 3 h. Elucidation degradation pathway is accomplished through LC-MS.

Language: Английский

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Design of a synergistic combined electrodialysis/anodic oxidation system for simultaneous AMX membrane fouling mitigation and enhanced dye degradation

Chemical Engineering and Processing - Process Intensification, Journal Year: 2024, Volume and Issue: 196, P. 109663 - 109663

Published: Jan. 3, 2024

Language: Английский

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Prospects and Challenges of Electrooxidation and Related Technologies for the Removal of Pollutants from Contaminated Water and Soils

Advances in Science, Technology & Innovation/Advances in science, technology & innovation, Journal Year: 2024, Volume and Issue: unknown, P. 145 - 158

Published: Jan. 1, 2024

Language: Английский

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