Improvement of optical and structural properties of ZIF-8 by producing multifunctional Zn/Co bimetallic ZIFs for wastewater treatment from copper ions and dye

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: July 4, 2024

Abstract In the paper, high specific surface area (SSA) mono and bimetallic zeolitic imidazolate frameworks (ZIFs) based on zinc cobalt metals are successfully synthesized at room temperature using different ratios of Zn to Co salts as precursors ammonium a solvent tailor properties produced ZIF optimize efficiency particles in water treatment from dye copper ions, simultaneously. The results declare that monometallic microparticles formed tuning pore sizes also increasing SSA by inserting ions Zn-ZIF is accessible. It leads significant increase thermal stability Zn/Co-ZIF appearance an absorption band visible region due existence structures. bandgap energies ZIFs close Co-ZIF-8, indicating controlling ZIF. Furthermore, samples applied for (10 184 ppm) methylene blue under irradiation optimized multifunctional Zn/Co introduced admirable candidate even acidic conditions.

Language: Английский

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Highly corrosion-resistant and photocatalytic hybrid coating on AZ31 Mg alloy via plasma electrolytic oxidation with organic-inorganic integration

Journal of Magnesium and Alloys, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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Biomimetic Approaches for Detecting Lead in Water Contaminated by Perovskite Solar Cells

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Perovskite-based solar cells (PSCs) have emerged as highly promising in photovoltaics. New techniques are being developed for enhancing the device's lifetime and performance. However, damaged or end-of-life lead-perovskite modules pose significant health environmental risks due to release of Pb2+ ions into environment. This work an electrochemical detection lead leached from degraded PSCs address this issue. The biomimicking architecture sensing moiety was designed replicate interaction between amino acids various proteins, enabling more specific detection. Here, aminopropyl trimethoxysilane-functionalized metal-organic framework/ZIF-67 (ZIF-N) used detect lead, specifically water leaked lead-based PSCs. ZIF-67-based element, combined with a carbon paste electrode, exhibited selective ions, allowing low 60 ppb. strategy relies on measuring changes electronic properties using approach. Real-time perovskite-contaminated successfully demonstrated differential pulse voltammetry technique, ZIF-N element.

Language: Английский

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Engineering ZIF-67 with heteroatom-doped carbon dots for ultra-sensitive and selective detection of serum albumin in artificial body fluids

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113046 - 113046

Published: Feb. 1, 2025

Language: Английский

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Effect of Different Trace Iron-Doped ZIF-67 Materials for the Hydrogen Evolution Reaction

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

Published: May 15, 2025

The development of a catalyst that is efficient, clean, simple, inexpensive, and conducive to wide range industrial applications the key achieving water electrolysis for hydrogen production. In this paper, iron-doped ZIF-67 materials were synthesized using one-step hydrothermal method, with different molar ratios n (Fe3+): (Co2+) = 0.05%, 1%, 2%, 5%, 10%. We found trace amounts iron greatly changed particle size ZIF-67. After high-temperature pyrolysis (400 °C, 600 800 °C), electrochemical results showed content doped temperatures lead evolution reaction (HER) effects. 1% Fe/Co-600 sample overpotential (202 mV) at 10 mA·cm-2 Tafel slope (125.1 mV·dec-1) was significantly lower than other exhibited better HER performance, though still higher commercial Pt/C (5 wt %) 179 mV 67.8 mV·dec-1. Significantly, has strong stability. pyrolysis, had large specific surface area 290.1763 m2·g-1 porous structure consisting micropores mesopores, which improved catalytic effect. It may provide new way modify geometry design prepare low-cost high-activity Co-based catalysts.

Language: Английский

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Photocatalytic Degradation of Methylene Blue by Engineering Tungstic Acid@ZIF‐67 Cocatalyst

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(46)

Published: Dec. 1, 2024

Abstract The zeolitic imidazolate frameworks have gained significant attention in various applications owing to their exceptional surface area, customizable porosity, and excellent thermal chemical stability, making them a remarkable nanomaterial. present study involved the utilization of ultrasonic‐assisted techniques integrate tungstic acid into framework (TA@ZIF‐67) with aim augmenting photocatalytic activity. as‐synthesized nanocomposite was characterized using X‐ray diffraction scanning electron microscopic analysis inspect structural aspects morphology. reduction particle size TA@ZIF‐67 due incorporation results higher leading improvement activity ZIF‐67. assessment performance ZIF‐67 conducted through degradation methylene blue (MB) under sunlight. efficiency observed be 61% 85%, respectively, MB solution following 60 min irradiation period. investigation kinetics based on rate constant values revealed that presented greater removal from an aqueous solution. pave new avenue toward design MOF‐based photocatalysts for water treatments.

Language: Английский

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