Recent advances of MXene@MOF composites for catalytic water splitting and wastewater treatment approaches

Chemosphere, Journal Year: 2024, Volume and Issue: 364, P. 143194 - 143194

Published: Aug. 30, 2024

Language: Английский

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Sunlight-Driven Hydrogen Generation: Acceleration of Synergism between Cu–Ag Cocatalysts on a CdS System

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(5), P. 1914 - 1926

Published: Feb. 23, 2024

The high cost and limited sources of fossil fuels led researchers to discover alternative energy. aim this work is explore stable efficient catalysts for hydrogen evolution under sunlight. From perspective, various including CdS, Ag@CdS, Cu@CdS, Cu/Ag@CdS have been designed synthesized via the hydrothermal method. To enhance surface stability activity copper silver metals were selected as cocatalysts. Cocatalyst contents in situ deposited over surfaces CdS using a chemical reduction approach. optical structural properties investigated UV–vis/diffuse reflectance spectroscopy (DRS), Raman, photoluminescence (PL), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM), Fourier-transform infrared (FTIR), atomic force (AFM) techniques. Their compositions characteristics confirmed by energy-dispersive (EDX) photoelectron (XPS) studies. Thermal was assured thermogravimetric analysis (TGA), whereas magnetic determined paramagnetic (EPR). Photoreactions done quartz photoreactor (150 mL/Velp Scienific) generation activities monitored gas chromatographs, i.e., GC-TCD (Shimadzu-2010/Japan). results depict that with 2% Cu 1% Ag on exhibit highest (i.e., 18.93 mmol g–1 h–1 45.04% quantum efficiencies). higher attributed synergism generated between cocatalysts during photoreaction. It has predicted populations plasmon resonance (SPR) Cu/Ag Schottky junctions formed restrict charge recombination back reactions). Additionally, factors like pH, temperature, photocatalyst dosage, intensity light evaluated discussed optimize ideal conditions. study hold promise an eventual transition replace costly conventional used sustainable generation.

Language: Английский

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Proceeding of catalytic water splitting on Cu/Ce@g-C₃N₄ photocatalysts: an exceptional approach for sunlight-driven hydrogen generation

Nanoscale, Journal Year: 2024, Volume and Issue: 16(14), P. 7154 - 7166

Published: Jan. 1, 2024

This study investigates the photocatalytic hydrogen evolution on Cu/Ce supported g-C 3 N 4 catalyst.

Language: Английский

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Review of Ti₃C₂T_x MXene Nanosheets and their Applications

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(9), P. 9847 - 9867

Published: May 1, 2024

MXene Ti3C2Tx is a two-dimensional (2D) nanosheet material from the family formed by selective etching of aluminum atoms in ternary carbide Ti3AlC2 sheet. This process results 2D with titanium and fluorine on surface. has several attractive properties for various applications, such as excellent electrical conductivity mechanical good chemical stability. also large surface area can be easily functionalized introducing different groups onto its Some notable applications include supercapacitors batteries owing to high area. been explored catalyst reactions, including hydrogen evolution CO2 reduction. The main emphasis this review centered around exploring electrical, magnetic, optical characteristics MXenes. Additionally, it provides concise overview approaches used synthesizing these materials, specifically top-down bottom-up methods. Furthermore, thoroughly examines significant MXenes across multiple fields, encompassing biology, water remediation, sensors, catalysis, energy storage, membrane separation, wearable electronics. considers challenges that arise when working offers insights into potential future directions perspectives field. Overall, promising widespread application research ongoing.

Language: Английский

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Tuning of TiO₂/CdS Hybrid Semiconductor with Au Cocatalysts: State-of-the-Art Design for Sunlight-Driven H₂ Generation from Water Splitting

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(5), P. 4625 - 4636

Published: Feb. 21, 2024

In developing countries, there is a critical situation of pollution as well shortage energy. The aim this project was to design sustainable approach that can generate pollution-free energy (hydrogen) from renewable source. For purpose, Au@TiO2/CdS hybrid catalysts have been synthesized in hydrothermal reactor at 180 °C. morphology and optical characteristics the were carried out using FT–IR, XRD, Raman, UV–Vis–DRS, SEM, EDX, AFM, XPS techniques. All photoreactions done sunlight, whereas hydrogen generation experiments monitored GC–TCD (Shimadzu–2010/Japan). Overall, found be most active catalyst delivers 19.15 mmol g–1 h–1 under sunlight. Tuning TiO2/CdS with Au enhances surface plasmon impact generates more photo-induced charges. results depict system becomes effective cope SPR electrons drag redox reactions centers. Due effect, AuNPs progressively higher electron density on TiO2/CdS, specifically when it works Various factors like pH, temperature, dosage, volume, intensity light, sacrificial agents evaluated. concluded achieved via tuning semiconductor system. Although are many challenges ahead, study holds promise for an eventual transition replace conventional sources

Language: Английский

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Advances in MXene-based single-atom catalysts for electrocatalytic applications

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 529, P. 216462 - 216462

Published: Jan. 21, 2025

Language: Английский

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Surface-Modification Strategy to Produce Highly Anticorrosive Ti3C2Tx MXene-Based Polymer Composite Coatings: A Mini-Review

Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 653 - 653

Published: Feb. 1, 2025

MXenes are a group of novel two-dimensional (2D) materials with merits such as large specific surface area, abundant surface-functional groups, high chemical activity, excellent mechanical properties, hydrophilicity, and good compatibility various polymers. In recent years, many high-performance organic anticorrosion coatings using nanofillers have been reported attracted widespread attention. As the first successfully prepared MXene material, Ti3C2Tx is most extensively studied typical member family. Therefore, it taken representative its family, status MXene/epoxy resin (EP) MXene/waterborne polyurethane (WPU) polymer anticorrosive composite reviewed. Firstly, structure, characteristics, main synthesis methods briefly introduced. Then, latest progress four surface-modification strategies to improve dispersion, compatibility, stability, anti-aggregation properties MXenes, namely functionalization grafting, orientation regulation, heterostructure nanocomposite design, stabilization greening treatment, analyzed summarized. Finally, current challenges future opportunities regarding MXene-based corrosion-resistant discussed prospectively.

Language: Английский

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Functionalized MXenes for Enhanced Visible-Light Photocatalysis: A Focus on Surface Termination Engineering and Composite Design

Inorganics, Journal Year: 2025, Volume and Issue: 13(2), P. 45 - 45

Published: Feb. 6, 2025

MXenes, a groundbreaking class of two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides, have emerged as highly promising materials for photocatalytic applications due to their unique structural, electrical, surface properties. These are synthesized by selectively etching the A layer from MAX phases, yielding compositions with general formula Mn+1XnTx, where M is metal, X represents carbon or nitrogen, Tx refers terminations such –OH, –O, –F. This review delves into advanced synthesis techniques including fluoride-free molten salt methods, explores potential in photocatalysis environmental remediation. MXenes exhibit remarkable light absorption capabilities efficient charge carrier separation, making them effective degradation organic pollutants under visible light. Modulating chemistry bandgap via functional group modifications further enhances performance. attributes position next-generation sustainable applications, offering significant addressing global challenges.

Language: Английский

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Applications of doped-MXene-based materials for electrochemical energy storage

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 517, P. 216039 - 216039

Published: June 21, 2024

Language: Английский

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A review on overcoming challenges and pioneering advances: MXene-based materials for energy storage applications

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 101, P. 113810 - 113810

Published: Sept. 24, 2024

Language: Английский

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