Biochar for the removal of contaminants from soil and water: a review

Biochar, Journal Year: 2022, Volume and Issue: 4(1)

Published: March 15, 2022

Abstract Biochar shows significant potential to serve as a globally applicable material remediate water and soil owing the extensive availability of feedstocks conducive physio-chemical surface characteristics. This review aims highlight biochar production technologies, characteristics biochar, latest advancements in immobilizing eliminating heavy metal ions organic pollutants water. Pyrolysis temperature, heat transfer rate, residence time, type feedstock are critical influential parameters. Biochar’s efficacy managing contaminants relies on pore size distribution, groups, ion-exchange capacity. The molecular composition physical architecture may be crucial when practically applied soil. In general, produced at relatively high pyrolysis temperatures can effectively manage via increasing area, hydrophobicity microporosity. generated lower is deemed more suitable for removing polar inorganic through oxygen-containing functional precipitation electrostatic attraction. also presents existing obstacles future research direction related biochar-based materials effluents Graphical

Language: Английский

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Zero-Dimensional Carbon Nanomaterials for Fluorescent Sensing and Imaging

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 11047 - 11136

Published: Sept. 7, 2023

Advances in nanotechnology and nanomaterials have attracted considerable interest play key roles scientific innovations diverse fields. In particular, increased attention has been focused on carbon-based exhibiting extended structures unique properties. Among these materials, zero-dimensional structures, including fullerenes, carbon nano-onions, nanodiamonds, dots, possess excellent bioaffinities superior fluorescence properties that make suitable for application to environmental biological sensing, imaging, therapeutics. This review provides a systematic overview of the classification structural properties, design principles preparation methods, optical sensing applications nanomaterials. Recent interesting breakthroughs sensitive selective imaging heavy metal pollutants, hazardous substances, bioactive molecules as well information encryption, super-resolution photoacoustic phototherapy nanomedicine delivery are main focus this review. Finally, future challenges prospects materials highlighted envisaged. presents comprehensive basis directions designing, developing, applying fascinating fluorescent sensors fabricated based specific requirements numerous research

Language: Английский

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Carbon Dot Biopolymer-Based Flexible Functional Films for Antioxidant and Food Monitoring Applications

ACS Applied Polymer Materials, Journal Year: 2022, Volume and Issue: 4(12), P. 9323 - 9340

Published: Nov. 29, 2022

Heteroatom-doped carbon dot (CD)-reinforced flexible, antioxidant, and UV-resistant polymeric thin films have been fabricated by a facile physical compounding strategy associated with the 'cast peel' technique. The prepared CDs were found to be stable in aqueous media because of their zeta potential value (−5.85 mV). There was no significant change values during 7 days storage, indicating long-term stability CPCDs. CD-reinforced thermoplastic starch (TPS)/κ-carrageenan hybrid developed as antioxidants improve shelf-life agro-products. Besides this, they also qualified for mechanical strength (>40 MPa), transparency (∼77%), nondeteriorative dimensional integrity at high relative humidity (∼97%), properties. For assessing food preservation behavior, leaching has studied time-dependent sustained release different simulant media, where it showed gradual alteration entrapment efficacy high-polarity gradient environments. mechanism CD obtained from non-Fickian fittings initial preplateaued kinetic data. Surprisingly, when these nanodots arrested inside polymer matrix, film excellent water vapor impermeability, low moisture retention, sufficient toughness, superficial compliance external flexing stretching. Also, CD-based TPS/κ-carrageenan exhibited strong antioxidant activity, determined 1,1-diphenyl-2-picrylhydrazyl (>85%) 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid assays (>90%). Thus, could promoted ideal alternatives packaging thin, tough, moisture-impermeable

Language: Английский

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Layered ammonium vanadate nanobelt as efficient adsorbents for removal of Sr2+ and Cs+ from contaminated water

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 615, P. 110 - 123

Published: Jan. 29, 2022

Language: Английский

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Efficient removal of uranium (VI) with a phytic acid-doped polypyrrole/ carbon felt electrode using double potential step technique

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 433, P. 128775 - 128775

Published: March 25, 2022

Language: Английский

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Carbon dots in environmental treatment and protection applications

Desalination, Journal Year: 2022, Volume and Issue: 548, P. 116285 - 116285

Published: Dec. 12, 2022

Language: Английский

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Recent progress of radionuclides separation by porous materials

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(11), P. 3515 - 3577

Published: Sept. 26, 2024

Language: Английский

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Controllable synthesis of bifunctional magnetic carbon dots for rapid fluorescent detection and reversible removal of Hg2+

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 457, P. 131683 - 131683

Published: May 24, 2023

Language: Английский

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Carrageenan-based active and intelligent packaging films integrated with anthocyanin and TiO2-doped carbon dots derived from sweet potato peels

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 259, P. 129371 - 129371

Published: Jan. 14, 2024

Language: Английский

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Advanced materials in sorbent-based analytical sample preparation

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 506, P. 215680 - 215680

Published: Feb. 13, 2024

Language: Английский

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