Sputtering thin films: Materials, applications, challenges and future directions

Advances in Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 330, P. 103203 - 103203

Published: May 22, 2024

Language: Английский

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An ultrathin 2D NiCo-LDH nanosheet decorated NH₂-UiO-66 MOF-nanocomposite with exceptional chemical stability for electrocatalytic water splitting

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(19), P. 10309 - 10318

Published: Jan. 1, 2023

Utilization of bifunctional high-efficiency non-precious electrocatalysts for stable and effective water splitting is crucial to the growth clean energy industry.

Language: Английский

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Enhanced Photo/Electrocatalytic Hydrogen Evolution by Hydrothermally Derived Cu-Doped TiO₂ Solid Solution Nanostructures

Langmuir, Journal Year: 2024, Volume and Issue: 40(8), P. 4063 - 4076

Published: Feb. 14, 2024

Highly efficient nanocatalysts with a high specific surface area were successfully synthesized by cost-effective and environmentally friendly hydrothermal method. Structural elemental purity, size, morphology, area, band gap of pristine 1 to 5% Cu-doped TiO2 nanoparticles characterized powder X-ray diffraction (PXRD), photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), energy dispersive analysis (EDAX), inductively coupled plasma mass spectrometry (ICP-MS), liquid chromatography-high resolution (LC-HRMS), scanning microscopy (SEM), transmission (TEM), BET Raman spectroscopy, photoluminescence (PL) UV-visible diffused reflectance (UV-DRS) studies. The XPS EPR findings indicated the successful integration Cu ions into lattice. UV-DRS investigations revealed that an increase in dopant concentration, NPs show decrease (3.19–3.08 eV) (169.9–188.2 m2/g). Among all compositions, 2.5% has shown significant H2 evolution apparent quantum yield 17.67%. Furthermore, electrochemical water-splitting study shows have superiority over for reaction. It was thus tuning desired concentration led enhanced photo/electrocatalytic sustainable applications.

Language: Английский

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Pristine TiO2 and Sr-Doped TiO2 Nanostructures for Enhanced Photocatalytic and Electrocatalytic Water Splitting Applications

Catalysts, Journal Year: 2023, Volume and Issue: 13(1), P. 93 - 93

Published: Jan. 2, 2023

Pristine TiO2 and Sr-doped (1%, 2.5% 5%) nanoparticles were synthesized at low temperatures via an eco-friendly hydrothermal route for water-splitting applications. XRD, EDAX Raman analysis performed to analyze the crystallinity, purity structure of as-synthesized materials. TEM, SEM, BET UV-DRS studies carried out elucidate size, morphology, surface area optoelectronic properties nanoparticles. High areas 169, 182, 178 141.16 m2 g−1 pristine (12 ± 0.6 nm) 1% (11.1 nm), (12.1 5% (13 0.7 obtained, respectively. One-percent found be active photocatalysts, as they showed higher hydrogen production (26.30 mmolgcat−1). Furthermore, electrocatalysis was investigated HER OER in 0.5 N H2SO4 0.1 KOH electrolytic solutions using calomel a reference electrode, revealing that maximum current density both (≈10 mA/cm2) (≈2.49 mA/cm2), with onset potential 0.96 V 1.55 OER, Tafel slopes 84.09 91.60 mV/dec,

Language: Английский

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S-Scheme ZIF-67/CuFe-LDH Heterojunction for High-Performance Photocatalytic H₂ Evolution and CO₂ to MeOH Production

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(40), P. 16451 - 16463

Published: Sept. 22, 2023

The S-scheme heterojunction photocatalyst holds potential for better photocatalysis owing to its capacity broaden the light absorption range, ease electron-hole separation, extend charge carrier lifespan, and maximize redox ability. In this study, we integrate zeolitic imidazolate frameworks (ZIFs-67) with CuFe-LDH composite, offering a straightforward approach towards creating novel hybrid nanostructure, enabling remarkable performance in both photocatalytic hydrogen (H2) evolution carbon dioxide (CO2) methanol (MeOH) conversion. ZIF-67/CuFe-LDH exhibits an enhanced rate of 7.4 mmol g-1 h-1 AQY 4.8%. superior activity CO2 reduction MeOH generation was 227 μmol 5.1%, it still exhibited after continuously working 4 runs nearly negligible decay activity. combined spectroscopic analysis, electrochemical computational data strongly demonstrate that material integrates advantageous properties individual ZIF-67 exhibiting distinguished photon harvesting, suppression photoinduced recombination kinetics, extended lifetime, efficient transfer, subsequently boosting higher activities.

Language: Английский

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Heterogeneous Photocatalysis

Published: Sept. 2, 2024

Heterogeneous photocatalysis has gained considerable interest in recent years due to its promising potential for addressing challenges like environmental remediation, energy conversion, water splitting, CO 2 reduction, and organic synthesis. Recently, there have been several advances heterogeneous photocatalysis, including the designing of novel photocatalysts, optimization photocatalytic processes, discovery new applications, such as use nanoparticle-based plasmonic 2D materials. Overall, opened opportunities using this technology address a variety related challenges. This process generally involves semiconductor material, typically titanium dioxide (TiO ), which becomes energized by sunlight, resulting creation electron-hole pairs. These pairs interact with surface molecules, leading formation reactive oxygen species (ROS) diverse chemicals. ROS assist breaking down pollutants, splitting into hydrogen, converting . Nanoparticlebased photocatalysts provide notable advantage their substantial surface-area volume ratio, thereby elevating performance. Plasmonic utilize plasmon resonance boost efficiency , benefiting from ability absorb visible light, abundant solar energy. Additionally, materials graphene transition-metal dichalcogenides, known two-dimensional substances, attention areas unique electronic properties, making them versatile various applications. stands highly technological innovation, garnering significant realm remediation. advanced technique subjected extensive research exploration immense purification both air environments. chapter gives brief summary Initially, it delves fundamental principles underpinning encompassing comprehensive examination photocatalyst categories, mechanisms governing factors that influence efficiency. Subsequently, explores applications spanning pollutant degradation, Next, synthesis, are reviewed. The associated each application discussed along enhancing performance catalysts. Finally, discusses future directions highlighting importance global

Language: Английский

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Surface engineering of a 2D CuFe-LDH/MoS₂ photocatalyst for improved hydrogen generation

Materials Advances, Journal Year: 2024, Volume and Issue: 5(10), P. 4159 - 4171

Published: Jan. 1, 2024

Creating effective heterostructure photocatalysts with S-scheme-based charge-transfer dynamics enables efficient electron transfers, thereby enhancing visible-light-induced photocatalytic hydrogen production.

Language: Английский

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Effect of phase of NiS loaded on two-dimensional CdS nanosheets on photocatalytic hydrogen evolution

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1303, P. 137576 - 137576

Published: Jan. 15, 2024

Language: Английский

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InVO₄-Decorated Ti₃C₂ MXene for Efficient Photocatalytic Hydrogen Evolution

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(31), P. 40825 - 40835

Published: July 25, 2024

The generation of hydrogen through photocatalysis is a fascinating technology for addressing environmental concerns and the energy crisis. Nevertheless, quest cost-effective, stable, efficient photocatalysts in realm conversion remains significant challenge. Herein, we designed novel InVO4/Ti3C2 MXene (IVTC) heterostructures by employing acid etching to produce Ti3C2 with an accordion-like morphology, using hydrothermal technique production orthorhombic InVO4 nanoparticles (NPs), integrating them self-assembly approach. Both field-emission scanning electron microscopy HRTEM analyses revealed consistent distribution NPs average size 43.4 nm on both surfaces between sheets MXene. intimate interface nanosheet suppressed carrier recombination promoted charge transfer, thereby boosting photocatalytic H2 production. Under visible light exposure, rate evolution enhanced IVTC containing optimized 10% loading InVO4, exhibiting over 3-fold increase compared pristine NPs, maintaining efficiency across four cycles. This research presents promising method designing creating high-efficiency possessing excellent visible-light-driven activity evolution.

Language: Английский

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Defect-rich UiO-66@g-C₃N₄/Ni frameworks as efficient water splitting photocatalysts

Materials Advances, Journal Year: 2024, Volume and Issue: 5(7), P. 2785 - 2796

Published: Jan. 1, 2024

In this report, we uncover the synergistic role of g-C 3 N 4 , a cocatalyst (Ni), and defect sites Zr-MOFs for unprecedented hydrogen evolution activity.

Language: Английский

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