Understanding the Photocatalytic Water Reduction Capability of NaM(WO4)2 (M = Ga, Sc) by the Electronic Structure and Bond Characteristic Analysis DOI

Congying Huang,

Guangxiang Lu, Zien Cheng

и другие.

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Июнь 2, 2025

m-WO3 has a narrow band gap, making it promising photocatalyst. However, its antibonding W-O orbitals limit water reduction capability due to insufficient potential. Incorporating weakly bonded M-O in NaM(WO4)2 (M = Ga, Sc) enhances covalency compared that m-WO3, resulting more negative conduction minimum (CBM) potential, sufficient for photocatalytic reduction. Here, were synthesized via high-temperature solid-state reactions, and their precise structures determined through Rietveld refinement of high-resolution XRD data. Density functional theory (DFT) calculations performed analyze the electronic structures, bond characters further examined using crystal orbital Hamilton population (COHP), index (COBI), electron localization function (ELF). Experimentally, NaGa(WO4)2 loaded with 0.63 wt % Pd NaSc(WO4)2 0.94 exhibited H2 generation rates 2.45 6.30 μmol/h, respectively, under UV irradiation methanol aqueous solution. Apparent quantum yields at 295 nm are estimated be 0.66 2.21%, respectively. Notably, displayed superior activity, which can attributed CBM as discussed comparison structures.

Язык: Английский

Green hydrogen production in offshore environments: A comprehensive review, current challenges, economics and future-prospects DOI
Babalola Aisosa Oni, Samuel Eshorame Sanni,

Andrew Nyaisoti Misiani

и другие.

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 125, С. 277 - 309

Опубликована: Апрель 10, 2025

Язык: Английский

Процитировано

1
Recent advances in Biomass-Derived hydrochar for photocatalytic and electrocatalytic applications DOI

Xianglong Meng,

Xingqiang Liu, Debin Zeng

и другие.

Chemical Engineering Science, Год журнала: 2025, Номер unknown, С. 121435 - 121435

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Advanced TiO2-Based Photocatalytic Systems for Water Splitting: Comprehensive Review from Fundamentals to Manufacturing DOI Creative Commons

Tarek Ahasan,

E.M.N. Thiloka Edirisooriya, Punhasa S. Senanayake

и другие.

Molecules, Год журнала: 2025, Номер 30(5), С. 1127 - 1127

Опубликована: Фев. 28, 2025

The global imperative for clean energy solutions has positioned photocatalytic water splitting as a promising pathway sustainable hydrogen production. This review comprehensively analyzes recent advances in TiO2-based systems, focusing on materials engineering, source effects, and scale-up strategies. We recognize the advancements nanoscale architectural design, engineered heterojunction of catalysts, cocatalyst integration, which have significantly enhanced efficiency. Particular emphasis is placed crucial role chemistry system performance, analyzing how different sources-from wastewater to seawater-impact evolution rates stability. Additionally, addresses key challenges scaling up these including optimization reactor light distribution, mass transfer. Recent developments artificial intelligence-driven discovery process are discussed, along with emerging opportunities bio-hybrid systems CO2 reduction coupling. Through critical analysis, we identify fundamental propose strategic research directions advancing technology toward practical implementation. work will provide comprehensive framework exploring advanced composite developing efficient scalable multifunctional simultaneous

Язык: Английский

Процитировано

0
V-doped ZnIn2S4 induces S vacancy modulation to enhance photocatalytic hydrogen production under visible light DOI

Linxiu Luo,

Yongping Luo, Yuan Xiong

и другие.

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132537 - 132537

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Out-of-plane polarization engineering: Optimizing exciton dissociation and solar-to-hydrogen efficiency in photocatalytic water splitting DOI
Lei Li,

Zixuan Yang,

Tao Huang

и другие.

Applied Physics Letters, Год журнала: 2025, Номер 126(18)

Опубликована: Май 5, 2025

Photocatalytic water splitting is a promising route for clean energy production, yet remains constrained by poor carrier utilization and low solar-to-hydrogen (STH) efficiency. Here, we demonstrate the role of out-of-plane polarization in addressing these limitations using 1H phase Cr-based Janus monolayers. The optimizes band edges to match redox potentials at pH = 0, piezoelectric electron redistribution via Poisson effect extends photocatalytic activity full levels. homojunction constructed from monolayers inherits optimized overpotential naturally forms type-II alignment, dipole-induced electric field further drives segregated carriers opposite sides participating respective half-reactions, facilitating exciton dissociation. Remarkably, can break traditional bandgap lower limits 1.23 eV, which enhances light absorption boosts STH efficiency 38.1% CrSSe 0 37% −2.5% CrSeTe range 7–11. This work highlights as powerful strategy enhance performance, offering insight designing high-efficiency photocatalysts.

Язык: Английский

Процитировано

0
BiOBr@PZT Nanocomposite Membranes via Electrospinning-SILAR Technology: A Sustainable Green Material for Photocatalytic Degradation in Coloration-Related Wastewater Remediation DOI Open Access

Zhengyu Ding,

Jun Zhang, Z. C. Xia

и другие.

Sustainability, Год журнала: 2025, Номер 17(11), С. 4984 - 4984

Опубликована: Май 29, 2025

The textile industry encounters serious environmental challenges from wastewater with persistent organic pollutants, demanding sustainable solutions for remediation. Herein, we report a novel green synthesis of flexible BiOBr@PZT nanocomposite membranes via electrospinning and successive ionic layer adsorption reaction (SILAR) visible-light-driven photocatalytic degradation. hierarchical structure integrates leaf-like BiOBr nanosheets PAN/ZnO/TiO2 (PZT) nanofibers, forming Z-scheme heterojunction. This enhances the separation photogenerated carriers while preserving mechanical integrity. SILAR-enabled low temperature deposition ensures eco-friendly fabrication by avoiding toxic precursors cutting energy use. Optimized BiOBr@PZT-5 shows exceptional performance, achieving 97.6% tetracycline hydrochloride (TCH) degradation under visible light in 120 min. It also has strong tensile strength (4.29 MPa) cycling stability. Mechanistic studies show efficient generation O2− OH radicals through synergistic absorption, charge transfer, turbulence-enhanced mass diffusion. material’s flexibility allows reusable turbulent flow applications, overcoming rigid catalyst limitations. Aligning chemistry UN SDGs, this work advances multifunctional systems scalable, energy-efficient treatment, offering paradigm that remediation industrial adaptability.

Язык: Английский

Процитировано

0
Understanding the Photocatalytic Water Reduction Capability of NaM(WO4)2 (M = Ga, Sc) by the Electronic Structure and Bond Characteristic Analysis DOI

Congying Huang,

Guangxiang Lu, Zien Cheng

и другие.

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Июнь 2, 2025

m-WO3 has a narrow band gap, making it promising photocatalyst. However, its antibonding W-O orbitals limit water reduction capability due to insufficient potential. Incorporating weakly bonded M-O in NaM(WO4)2 (M = Ga, Sc) enhances covalency compared that m-WO3, resulting more negative conduction minimum (CBM) potential, sufficient for photocatalytic reduction. Here, were synthesized via high-temperature solid-state reactions, and their precise structures determined through Rietveld refinement of high-resolution XRD data. Density functional theory (DFT) calculations performed analyze the electronic structures, bond characters further examined using crystal orbital Hamilton population (COHP), index (COBI), electron localization function (ELF). Experimentally, NaGa(WO4)2 loaded with 0.63 wt % Pd NaSc(WO4)2 0.94 exhibited H2 generation rates 2.45 6.30 μmol/h, respectively, under UV irradiation methanol aqueous solution. Apparent quantum yields at 295 nm are estimated be 0.66 2.21%, respectively. Notably, displayed superior activity, which can attributed CBM as discussed comparison structures.

Язык: Английский

Процитировано

0