Biobased Strategies for E-Waste Metal Recovery: A Critical Overview of Recent Advances

Environments, Journal Year: 2025, Volume and Issue: 12(1), P. 26 - 26

Published: Jan. 16, 2025

The increasing e-waste volumes represent a great challenge in the current waste management landscape, primarily due to massive production and turnover of electronic devices complexity their components constituents. Traditional strategies for treatment focus on metal recovery through costly, energetically intensive, environmentally hazardous processes, such as pyrometallurgical hydrometallurgical approaches, often neglecting other As efforts are directed towards creating more sustainable circular economic model, biobased alternative approaches these traditional techniques have been increasingly investigated. This critical review focuses recent advances treatment, exclusively considering studies using sources. It addresses, from perspective, inactive biomass, live biogenic compounds, showcasing diversity discussing reaction parameters, advantages disadvantages, challenges, potential valorization generated by-products. While ongoing research optimizing operational times efficiencies, bioprocessing still offer significant e-waste. These include lower environmental impact by reducing energy consumption effluent treatments ability recover metals complex streams, paving way economy electronics industry.

Language: Английский

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Repurposed Cu Scrap Featuring CuO/Cu(OH)₂ Nanostructures as a High-Performance Anode for OER-Masking Small Molecule Electrooxidation

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: May 20, 2025

Language: Английский

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Combinatorial Scanning Kelvin Probe and Density Functional Theory Studies on Selective n-Butanol Adsorption Properties of pH-Dependent Bi₂WO₆ Nanostructures

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 8, 2024

Fast and effective detection of volatile organic compounds (VOCs) is a crucial criterion for developing stable room-temperature operable gas sensors. In this work, we have synthesized Bi2WO6 (BW) nanostructures using the hydrothermal method at pH 1 (BW-1), pH-3 (BW-3), 5 (BW-5), 7 (BW-7), 9 (BW-9) to study their VOC adsorption properties. X-ray diffraction confirms that both internal strain crystallite size increase with pH. Field-emission scanning electron microscope results showed change in morphology BW from flakes sheets. The obtained surface photovoltage, photoluminescence spectra, Raman photoelectron spectroscopy revealed defects oxygen vacancies Further, properties are examined Kelvin probe system through contact potential difference measurements dark visible light conditions air various VOCs like n-butanol, benzene, triethylamine, acetone. BW-9 sample has exhibited ∼40% enhanced photoresponse under an n-butanol atmosphere compared BW-1. chemiresistive sensing performance between 50 400 ppm exhibits sensitivity value 0.00816 ± 0.0007 ppm–1. Computational investigations density functional theory confirmed surface-adsorbed on shows higher affinity energy −0.877 eV among other VOCs. Overall, these combined experimental computational studies demonstrated selective behavior toward industrial pollutant.

Language: Английский

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Tuning Mn-MOF by Incorporating a Phthalocyanine Derivative as an Enzyme Mimic for Efficient EGFET-based Ascorbic Acid Detection

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

In this study, we present the effect of catalytic performance in Mn-MOF upon incorporating varied concentrations phthalocyanine derivative (H2PcP8OH16) for ascorbic acid detection an extended gate field-effect transistor (EGFET) configuration. The fabricated Mn-OM-MOF-2/CP electrode demonstrated notable selectivity toward physiological conditions sweat, with a sensitivity 71.375 μA·mM–1·cm–2, response time less than 6 s, and linear range from 5 to 240 μM. limit (LOD) quantification (LOQ) were found be 0.26 0.78 μM, respectively. Remarkably, prepared electrodes followed Michaelis–Menten kinetics. Among them, highest affinity acid, Km value 0.142 mM. To gain deeper insights into charge transfer mechanism during interaction Mn-OM-MOF-2/CP, employed scanning Kelvin probe (SKP) technique conducted post-FTIR analysis understand sensing mechanism. Additionally, post-UV–visible (UV–vis) measurements performed explore how incorporation enhances affinity. Additional studies using standard artificial sweat have confirmed electrode's good recovery. Overall, results EGFET method suitability rapid, noninvasive, single-use 1× phosphate buffer saline (1× PBS).

Language: Английский

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Catalytic application of second cycle copper-based laboratory waste for synthesis of beta-keto-1,2,3-triazole: A micro circular economy approach

Sustainable Chemistry for the Environment, Journal Year: 2024, Volume and Issue: unknown, P. 100205 - 100205

Published: Dec. 1, 2024

Language: Английский

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Porphyrinoid-Functionalized ZnO Nanoflowers for Visible Light-Enhanced and Selective Benzylamine Detection at Room Temperature

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(44), P. 61204 - 61217

Published: Oct. 22, 2024

Functionalization of hybrid organic molecules as layers on ZnO nanoflowers (NFs) gives an excellent combination sensing toward visible light and vapors various volatile compounds (VOCs). In this work, functionalized NFs were utilized for the photoinduced detection benzylamine at room temperature. The synthesized via a facile solution route with four different porphyrin-conjugated namely (i) pyrene-porphyrin (PP), (ii) pyrene- porphyrinato zinc (ZnPP), (iii) triphenylamine- porphyrin (TP) (iv) (ZnTP). diameter flower-like structure was found to be ∼3.2 μm thickness petals being ∼24.1 nm. gas adsorption performance activation temperature studied by using scanning Kelvin probe (SKP) system. improved properties samples can attributed heterojunctions activation. particular, enhanced response ZnTP (ZnTPZ) observed. Further, static experiments ZnTPZ under concentrations (1, 3, 5, 10, 15, 25 ppm) both in dark conditions have exhibited linear increase response. selectively compared that pristine thus confirmed 1 ppm benzylamine. sensitivity limit sensor calculated 0.0292 ppm-1 197 ppb, respectively. coordination metal (Zn) has helped effective charge transfer between providing additional active sites interactions. Also, density functional theory calculations demonstrated role surface improving adsorption. fresh cabbage real sample analysis proposed illumination conditions, obtained low evaluation Overall, results suggest development novel ZnTPZ-based light-activated sensors These kinds used track freshness vegetables they are transported from farms commercial outlets.

Language: Английский

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A Step Towards Non-Invasive Diagnosis of Diabetes Mellitus Using In-Situ Synthesized MOF-MXene Hybrid Material with Extended Gate Field-Effect Transistor Integration

Journal of Materials Chemistry B, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 2, 2024

Integration of MOF-MXene hybrid material into an EGFET configuration for enzyme-free and non-invasive glucose detection to diagnose diabetes mellitus.

Language: Английский

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