In Situ Electrochemical Conversion of Biomass-Derived 5-Hydroxymethylfurfural into 2,5-Furandicarboxylic Acid by Time-Controlled Aerosol-Assisted Chemical Vapor Deposited FeNi Catalyst DOI Creative Commons
Muthumariappan Akilarasan, Muhammad Ali Ehsan, Muhammad Nawaz Tahir

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(42), P. 42766 - 42777

Published: Oct. 14, 2024

The conversion of 5-hydroxymethylfurfural (HMF) into valuable chemicals, such as 2,5-furandicarboxylic acid (FDCA), is pivotal for sustainable chemical production, offering a renewable pathway to biodegradable plastics and high-value organic compounds. This pioneering study explores the synthesis FeNi nanostructures via aerosol-assisted vapor deposition (AACVD) electrochemical oxidation HMF FDCA. By adjusting time, we developed two distinct nanostructures: FeNi-40, which features nanowires with spherical terminations, FeNi-80, aggregated structures. X-ray diffraction (XRD) confirmed that both possess phase-pure face-centered cubic (FCC) crystal structure. Electrochemical tests conducted using nanocatalysts on Ni foam revealed FeNi-40 requires significantly lower onset potential (1.32 V vs RHE) compared FeNi-80 (1.40 RHE). difference attributed unique nanowire morphology provides higher density active sites larger electrochemically surface area, thereby enhancing efficiency process. When tested in an H-type electrolyzer Nafion membrane, demonstrated remarkable Faradaic 96.42% high product yield, underscoring morphology-controlled enhance processes significantly.

Language: Английский

Tailoring AlSi7Mg0.3 composite properties with CoCrMoNbTi high entropy alloy particles addition via FSP technique DOI
Shashi Prakash Dwivedi, Shubham Sharma,

Archana Singh

et al.

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 315, P. 129038 - 129038

Published: Feb. 8, 2024

Language: Английский

Citations

15
Characterization of FeCoNiCr high-entropy alloys manufactured by powder metallurgy technique DOI Creative Commons
Ali Basem, Mohd Ali Hassan, Omayma A. Elkady

et al.

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 30, P. 88 - 100

Published: March 11, 2024

This study explores the phase constitution, thermal behavior, magnetic characteristics, and mechanical properties of FeCoNiCrCux high-entropy alloys (HEAs) produced via powder metallurgy, focusing on varying copper ratios (0–20%). The investigation seeks to understand how introduction influences composition FeCoNiCr HEAs, particularly regarding changes in structure behavior. constitution was analyzed using field emission scanning electron microscopy (SEM) X-ray diffraction (XRD). Thermal expansion differential calorimetry (DSC) were employed while vibrating sample magnetometers (VSM) utilized assess properties. Mechanical evaluated through hardness testing. analysis reveals a shift from single-phase FCC dual-phase configuration comprising copper-rich phases as content increases. characterized, demonstrating alloy's behavior under conditions. tests showed decrease with increasing content. contributes understanding addition affects properties, strength HEAs. observed offer insights for tailoring HEAs specific applications.

Language: Английский

Citations

12
Synergistic performance evaluation of copper–WC-graphene composites: Microstructure, mechanical properties, corrosion, and wear behavior under microwave sintering DOI
Shashi Prakash Dwivedi, Vijay Chaudhary, Shubham Sharma

et al.

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 317, P. 129202 - 129202

Published: March 18, 2024

Language: Английский

Citations

10
Investigation of surface hardness, thermostability, tribo-corrosion, and microstructural morphological properties of microwave-synthesized high entropy alloy FeCoNiMnCu coating claddings on steel DOI Creative Commons
Shubham Sharma, Shashi Prakash Dwivedi, Kahtan A. Mohammed

et al.

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

Published: March 2, 2024

Abstract Deposition of high entropy alloy FeCoNiMnCu on SS-304 was carried out by microwave energy for application in “solid oxide fuel-cell (SOFC) interconnects”. The ball-milling has been performed taking “Fe, Co, Ni, Mn, and Cu” equal 20 wt. % before deposited substrate. steel with 20% Fe Co Ni Mn Cu (HEA) exposed to thermal-exposure the air up 10 weeks at 800 °C. uniform cladding distribution HEA particles can be apparently observed substrate utilizing Scanning Electron Microscope (SEM), Optical microscopy analysis. Homogeneity interfacial layer evident employing (SEM) characterization. Results have indicated that after thermal exposure ten °C, a “protective Cr 2 O 3 layer”, “high-entropy spinel coating” (Fe, Cu) 4 formed. During cladding, emergence harder-phases contributed raised hardness. wear behavior coating significantly enhanced due strengthened resistance hardness coatings. Findings exhibited formation phase is potential material “SOFC interconnects” applications. Moreover, SS304 composition Fe, demonstrated remarkable stability under expansion studies. As findings revealed composite efficiently withstand significant variations volume when subjected elevated temperatures prolonged period time, thus, exhibiting its superior SOFC-interconnect Furthermore, SEM images surface, surface hardness, tribocorrosion coated identify effect steel-substrate.

Language: Английский

Citations

9
Tribomechanical, and microstructural morphological analysis of nitride ferrous powder metallurgy composites for enhanced automotive valve guide performance DOI Creative Commons
Baljeet Singh,

Jasmaninder Singh Grewal,

Rajeev Kumar

et al.

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 31, P. 6 - 25

Published: June 2, 2024

The growing challenges of reducing exhaust emissions and improved fuel economy has triggered automotive engineers to design manufacture engine parts with superior mechanical properties dimensional accuracies. Valve guides are cylindrical structures supporting inlet valve stems during operation. Conventionally made grey cast iron material, guide suffers from severe wear losses leading loss increased due improper stem seating. Here, the synthesis a novel ferrous powder metallurgy composite is presented characteristics have been studied at varying loads 30 N, 40 N 50 sliding speeds 0.5 m/s, 1 m/s 2 under lubricated conditions. samples undergone nitriding heat treatment 1150 °C improve surface hardness 700 Hv. shown negative rates high capillary action lubricating oil exhibited stable friction coefficient values. This attributed formation hard phases Fe2N, Fe3N, Fe4N Fe(Mn)3C twinning-induced plastic compounds like (Fe24Mn) 0.08 as evident XRD analysis. morphological analysis worn out was done SEM Coupled EDS it showed micro-cutting, Ploughing, delamination main phenomenon.

Language: Английский

Citations

8
Effect of Yttria-Stabilized Zirconia addition along with Cu in development of titanium based metal matrix composite via FSP technique for the application in biomedical devices DOI
Shashi Prakash Dwivedi, Kuldeep K. Saxena, Shubham Sharma

et al.

Composite Interfaces, Journal Year: 2024, Volume and Issue: 31(10), P. 1173 - 1197

Published: March 18, 2024

The present study investigated the effect of incorporating Yttria-Stabilized Zirconia (YSZ) and copper (Cu) in development Titanium-Based Metal Matrix Composites (TMCs) using Friction Stir Processing (FSP) technique. macrostructure TMCs, after adding 5% YSZ 2% Cu, displayed a defect-free, crack-free, porosity-free surface, indicating precision FSP method. Microstructure analysis revealed uniform distribution reinforcement particles proper dispersion grains, key for enhancing mechanical properties. interfacial bonding between titanium was exceptionally strong, devoid cracks porosity, attributed to additive's role. increase number grains per square inch Ti/5% YSZ/2% Cu composite (1176.26 at 500×) signified finer grain structure, contributing remarkable 48.04% improvement tensile strength compared pure titanium. strong are driving forces behind 46.34% increased hardness. Additionally, wear resistance improved by approximately 76.66%, vital characteristic applications facing abrasive conditions. corrosion testing demonstrated an 8.33% enhancement with composite.

Language: Английский

Citations

5
Photoelectrochemical Alchemy: Transforming Wastewater Pollutants through Photoelectrochemical Advanced Oxidation Processes DOI Creative Commons
Eliasu Issaka, Mabruk Adams,

Soumia El-Ouardy

et al.

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101057 - 101057

Published: Feb. 1, 2025

Language: Английский

Citations

0
Strong aging-resistant polyaniline-based geotextiles with piezoresistive sensing, electrode energy storage, electrothermal, and UV protection functions, and their application in smart railway subgrades DOI

Xinyu Jiao,

Huan Liu, Yuanjun Liu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162076 - 162076

Published: March 1, 2025

Language: Английский

Citations

0
Super-protective graphitic carbon nitride nanocomposites as durable surface coatings DOI

Shimaa A. Higazy,

Mohamed S. Selim, Abeer A. El-Segaey

et al.

Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 205, P. 109283 - 109283

Published: April 7, 2025

Citations

0
Revolutionizing Aluminum-Based Composite Manufacturing: Harnessing Fly Ash and Rice Husk Ash Reinforcement through Stir Casting for Sustainability DOI Creative Commons

R. Noor Ahmed,

K S Prashanth,

T. Annapurna

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 507, P. 01048 - 01048

Published: Jan. 1, 2024

The revolution in aluminum-based composite manufacturing is underway, propelled by the innovative integration of fly ash and rice husk (RHA) reinforcement through stir casting, heralding a sustainable approach to materials engineering. At heart this transformation lies meticulous process: aluminum alloy melting at 700°C within muffle furnace, augmented gradual introduction RHA particles into molten alloy, stirred 500 rpm for 15 minutes. This rigorous stirring method ensures uniform dispersion particles, optimizing their distribution throughout matrix.The resultant exhibits remarkable enhancements across key mechanical properties. With addition 5% 2.5% RHA, notable 13.44% increase tensile strength achieved, accompanied 25.68% improvement hardness. Furthermore, fatigue experiences substantial boost 20.12%, while wear resistance demonstrates enhancement 19.90% compared base composite.These findings underscore efficacy composites, offering pathway towards enhanced material performance resource efficiency practices. study represents paradigm shift greener more resilient materials, driving sustainability realm manufacturing.

Language: Английский

Citations

2