Preparation of highly porous nitrogen-doped biochar derived from birch tree wastes with superior dye removal performance

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2023, Volume and Issue: 669, P. 131493 - 131493

Published: April 20, 2023

Heteroatom doping is a highly effective strategy that can be used to modify carbonaceous adsorbents improve their chemical reactivity and increase adsorptive properties. Herein, simple method reported for the preparation of nitrogen-doped biochar using natural abundant biowaste from birch trees melamine as nitrogen dopant adsorption Acid red 18 (AR-18) dye water. The doped biochars were also characterized performance during treatment synthetic effluents. physicochemical characterization results showed N-doping process provoked remarkable chances on morphology, pore structure, surface functionalities. N-doped functional groups with 5.4 % N in its structure while non-doped carbon traces 0.47 %. Moreover, specific area was dominated by mesopores (86.4 %) micropores (67.8 %). Raman analysis incorporation created more defects structure. experiments boosted performance. maximum capacity 545.2 mg g−1, exhibited 444.5 i.e., an 22.6 kinetic equilibrium studies Avrami fractional order Liu models most suitable describing experimental AR-18 data. parameters found obey nonlinear relationship temperature. Since are porous, filling main mechanism, however; removal suggests interactions such electrostatic, hydrogen bonds, Lewis acid-base, π-π between adsorbent involved. thermodynamic solution dependent temperature, exothermic, spontaneous. excellent performances contaminants effluents confirming high efficiency color removal. This research shows efficient design effective, low-cost, sustainable remediate contamination wastewater.

Language: Английский

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Synthesis of novel mesoporous selenium-doped biochar with high-performance sodium diclofenac and reactive orange 16 dye removals

Chemical Engineering Science, Journal Year: 2023, Volume and Issue: 281, P. 119129 - 119129

Published: July 28, 2023

In this study, for the first time, a selenium-doped mesoporous biochar was prepared and efficiently employed sodium diclofenac reactive orange 16 dye adsorption. The characterization results indicated that selenium doping had remarkable impact on Biochar-Se morphological physicochemical structures. efficacy of developed samples (RO-16) (DCF) removals fully investigated. For both molecules (DCF RO-16), Liu's equilibrium model offered best fitness with maximum adsorption capacity values 355 mg g−1 DCF 538 RO-16 Biochar-Se. Multiple mechanisms including pore filling, π-π interaction, hydrogen bonding between DCF/RO-16 were involved in process. Se-nanoparticles formed metal–oxygen bonds, which boosted molecules. current work feasible approach development Se-doped adsorbent is incredibly effective treating wastewater.

Language: Английский

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Green synthesis of porous carbon cross-linked Y zeolite nanocrystals material and its performance for adsorptive removal of a methyl violet dye from water

Microporous and Mesoporous Materials, Journal Year: 2023, Volume and Issue: 356, P. 112587 - 112587

Published: April 11, 2023

Language: Английский

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Adaptive and intelligent polyurethane shape-memory polymers enabling next-generation biomedical platforms

Case Studies in Chemical and Environmental Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 101165 - 101165

Published: Feb. 1, 2025

Language: Английский

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Efficient adsorption of Congo red by MIL-53(Fe)/chitosan composite hydrogel spheres

Microporous and Mesoporous Materials, Journal Year: 2022, Volume and Issue: 348, P. 112404 - 112404

Published: Dec. 12, 2022

Language: Английский

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Removal of Congo red dye from aqueous environment by zinc terephthalate metal organic framework decorated on silver nanoparticles-loaded biochar: Mechanistic insights of adsorption

Microporous and Mesoporous Materials, Journal Year: 2023, Volume and Issue: 355, P. 112568 - 112568

Published: March 28, 2023

Language: Английский

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Nickel-aluminium layered double hydroxide as an efficient adsorbent to selectively recover praseodymium and samarium from phosphogypsum leachate

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 960, P. 170530 - 170530

Published: May 11, 2023

Language: Английский

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Shiitake spent mushroom substrate as a sustainable feedstock for developing highly efficient nitrogen-doped biochars for treatment of dye-contaminated water

Journal of Water Process Engineering, Journal Year: 2023, Volume and Issue: 56, P. 104435 - 104435

Published: Oct. 20, 2023

Edible white-rot mushrooms are organisms that cultivated at an industrial scale using wood-based substrates. The mushroom industry has estimated annual production of 34 Mt edible mushrooms, and approximately 70 wt% the substrate is left as waste known spent (SMS). huge volumes SMS generated by farms hinder proper recycling, meaning combustion or open-field burning common disposal practices. This paper shows a concept could help reduce environmental impact industry. from cultivation shiitake was used carbon precursor for nitrogen-doped activated biochar to remove reactive orange-16 (RO-16) azo dye water, well contaminants two synthetic effluents real sewage water. Melamine nitrogen dopant phosphoric acid activating agent. Samples without addition melamine were comparison. doping/impregnation process carried out in one-step, followed pyrolysis 700 900 °C 1 h. BET, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) scanning electron microscopy (SEM) characterization biochars. specific surface area doped samples slightly lower, i.e., 1011 m2/g (SMS-700 °C), 810 + N), 1095 (SMS-900 943 N). spectroscopic analysis showed N-doped biochars had more defective structures than non-doped ones. XPS doping with led formation N-functionalities on particles. kinetics adsorption represented Avrami model. isotherms well-fitted Liu maximum capacities (qmax) RO-16 much higher biochars, 120 mg/g 216 168 393 effective removal produced good recyclability. work concludes valuable be N-doping helped improve performance great extent.

Language: Английский

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Nanoporous N-Rich Covalent Organic Frameworks with High Specific Surface Area for Efficient Adsorption of Iodine and Methyl Iodide

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(19), P. 18177 - 18187

Published: Sept. 26, 2023

With the rapid development of nuclear industry, effective treatment radioactive iodine has become an urgent and challenging task. In this article, we synthesized a nanoporous nitrogen-rich covalent organic framework (TTA-DMTP-COF) with specific surface area up to 2332 m2/g for adsorption (I2) methyl iodide (CH3I). Adsorption experiments showed that TTA-DMTP-COF exhibited I2 CH3I properties; maximum capacity is as high 2.59 g·g–1, 1.60 g·g–1. addition, can effectively adsorb from iodine–cyclohexane solution, amount 516.46 mg/g. Mechanistic studies have shown enter nanopores COF materials form charge transfer complexes various functional groups in (including imines, triazine moieties, residual amino groups). The N-methylation reaction specifically binds nucleophilic N site generates polyiodides during process. Our work demonstrates excellent candidate material capable capturing air solution harsh environments.

Language: Английский

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Adsorption performance and mechanisms of MgO-modified palygorskite/biochar composite for aqueous Cd (II): Experiments and theoretical calculation

Applied Surface Science, Journal Year: 2023, Volume and Issue: 638, P. 157965 - 157965

Published: July 16, 2023

Language: Английский

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