A Review on Sustainable Manufacturing of Ceramic-Based Thin Films by Chemical Vapor Deposition (CVD): Reactions Kinetics and the Deposition Mechanisms

Coatings, Journal Year: 2023, Volume and Issue: 13(1), P. 188 - 188

Published: Jan. 14, 2023

Chemical vapor deposition (CVD) is a process that solid formed on substrate by the chemical reaction in phase. Employing this technology, wide range of materials, including ceramic nanocomposite coatings, dielectrics, and single crystalline silicon can be coated variety substrates. Among factors influencing design CVD system are dimensions or geometry substrate, temperature, composition type process, temperature within chamber, purity target material, economics production. Three major phenomena surface (kinetic), diffusion mass transfer reaction, desorption involved during process. Thermodynamically, technology requires high temperatures low pressures most systems. Under such conditions, Gibbs free energy quickly reaches its lowest value, resulting production solids. The kinetic control should always used at temperatures, done temperatures. coating deposited 900–1400 °C. Overall, it shown here controlling chamber precursors, together with flow rate precursors into possible to partially microstructure coatings

Language: Английский

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Analysis of XGaO3 (X = Ba and Cs) cubic based perovskite materials for photocatalytic water splitting applications: a DFT study

Heliyon, Journal Year: 2023, Volume and Issue: 9(3), P. e14112 - e14112

Published: Feb. 26, 2023

Energy conversion has become an important technology for meeting energy production and consumption in the modern era. Water splitting solar cell technologies are projected to close gap between demand consumption. Therefore, XGaO3 (X = Ba Cs) compounds having characteristics i.e., electrical, optical, mechanical, structural depicted by using a density functional theory (DFT) based CASTEP software with ultrasoft pseudo-potential plane-wave Generalized Gradient Approximation Perdew Burke Ernzerhof exchange correlation (GGA-PBE). According findings, all of these have cubic "pm3m" structure space group 221. The CsGaO3 BaGaO3 direct indirect band gaps, respect electronic band-structure recreations. Density states like total (TDOS) partial (PDOS) commend extent localization electrons numerous bands. optical properties explored adjusting dispersion curve/relation theoretical dielectric function (DF) scale corresponding peaks. As result, materials could be used consume light visible zone via photo catalysis. combination can produce effective results, so remarkable potential application sensing water splitting.

Language: Английский

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Research progress in electrochemical/photochemical utilization of methanol as a C1 source

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(21), P. 8313 - 8327

Published: Jan. 1, 2023

This review highlights the recent advances in various electrochemical and photochemical reactions using methanol as a sustainable C1 source.

Language: Английский

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Electrochemically Mediated Fixation of CO₂: Synthesis of Functionalized Oxazolidine‐2,4‐Diones by Three‐Component Reactions

Advanced Synthesis & Catalysis, Journal Year: 2023, Volume and Issue: 365(13), P. 2183 - 2187

Published: June 15, 2023

Abstract Carbon dioxide is a harmful greenhouse gas, as well valuable resource. Here, three‐component cyclization reaction was developed for the synthesis of oxazolidine‐2,4‐diones by immobilizing CO 2 under electrochemistry and copper catalyst. Propargyl amide used substrate to capture carbon produce carboxyl anion, while selenide produced electrophilic receptor activate triple bond electrochemical conditions. Then, intramolecular carried out obtain target product. Through this environmentally friendly strategy, series important synthesized.

Language: Английский

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Activation energy on three-dimensional Casson nanofluid motion via stretching sheet: Implementation of Buongiorno’s model

Journal of the Indian Chemical Society, Journal Year: 2023, Volume and Issue: 100(2), P. 100886 - 100886

Published: Jan. 5, 2023

Language: Английский

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Preparation of hybrid conducting polymers blend nanocomposite for energy conversion using experimental data and TD-DFT/DMOl3 computations

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 23, P. 2852 - 2867

Published: Feb. 4, 2023

In the presence of sodium dodecyl sulphate in an acidic solution while using ferric chloride as oxidizing agent, a blend three conducting polymers poly (ortho-phenylene diamine) (PoPDA), (meta phenylene diamine), and polypyrrole was produced. ZrO2 nanoparticles were prepared via sol-gel method hybrid nanocomposite zirconium oxide (TCPB/ZrO2)HNC synthesized. Using Physical Vapor Deposition technology, thin film from (TCPB/ZrO2)HNC. Density functional theory (DFT) also used to develop optimization TD-DFTD/Mol3 Cambridge Serial Total Energy Bundle (TD-FDT/CASTEP). By closely matching reported XRD Raman spectra, TD-DFT computations validated molecular structure studied materials confirmed its structure. According calculations, has average crystallite size 61.67 nm. The direct indirect optical energy bandgaps for (TCPB/ZrO2)HNC, are 2.352 2.253 eV, respectively. As measured by TD-DFT/DMol3, isolated molecule (TCPB/ZrO2) HNC bandgap 2.415 eV. properties suggested CASTEP agree quite well with values obtained experimentally. large is advantageous various storage applications.

Language: Английский

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Development of melamine-based covalent organic framework-MOF pearl-like heterostructure integrated poly(ether-block-amide) for CO2/CH4 separation

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(2), P. 109269 - 109269

Published: Jan. 3, 2023

Language: Английский

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Three-Component Electrochemical Aminoselenation of 1,3-Dienes

The Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 88(9), P. 5760 - 5771

Published: April 7, 2023

Azoles and organoselenium compounds are pharmacologically important scaffolds in medicinal chemistry natural products. We developed an efficient regioselective electrochemical aminoselenation reaction of 1,3-dienes, azoles, diselenide derivatives to access selenium-containing allylazoles skeletons. This protocol is more economical environmentally friendly features a broad substrate scope; pyrazole, triazole, tetrazolium were all tolerated under the standard conditions, which could be applied expedient synthesis bioactive molecules pharmaceutical industry.

Language: Английский

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Efficient Conversion of CO₂ and Homopropargylic Amines Promoted by a Stable Noble Metal-Free Cu₂O@MOF Heterogeneous Catalyst

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 15386 - 15395

Published: Oct. 3, 2024

Language: Английский

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Development of nanostructured based ZnO@WO3 photocatalyst and its photocatalytic and electrochemical properties: Degradation of Rhodamine B

International Journal of Electrochemical Science, Journal Year: 2023, Volume and Issue: 18(4), P. 100055 - 100055

Published: Feb. 23, 2023

The current study focused on the hydrothermal synthesis of ZnO@WO3 nanocomposite with Zn/W mole ratios 1:1, 5:1, and 6:1, labeled as (1:1), (5:1), ZnO@WO6:1, respectively, heterostructure photocatalyst for Rhodamine B (RhB) degradation from textile effluent. combination ZnO WO3 in a short rod-like structure was confirmed by structural analyses conducted using SEM XRD. According to electrochemical properties, can increase lifetime photo-generated charge carriers having lower transfer resistance recombination rate. optical band gaps pure ZnO, WO3, photocatalysts were found be 3.22 eV, 2.75 2.42 according studies. Combining semiconductor materials change forbidden width improve absorption performance visible light region. For (5:1) photocatalysts, total treatment 300 ml 10 mg/L RhB solution achieved after 62, 75, 55 min irradiation. results revealed that demonstrated excellent photocatalytic degradation. showed has effective potential treating real textiles.

Language: Английский

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