Recent Advances in Black TiO2 Nanomaterials for Solar Energy Conversion

Nanomaterials, Journal Year: 2023, Volume and Issue: 13(3), P. 468 - 468

Published: Jan. 24, 2023

Titanium dioxide (TiO2) nanomaterials have been widely used in photocatalytic energy conversion and environmental remediation due to their advantages of low cost, chemical stability, relatively high photo-activity. However, applications TiO2 restricted the ultraviolet range because wide band gap. Broadening light absorption is an efficient way improve activity. Thus, black with extended response visible even near infrared has extensively exploited as photocatalysts last decade. This review represents attempt conclude recent developments synthesized by modified treatment, which presented different structure, morphological features, reduced gap, enhanced solar harvesting efficiency. Special emphasis given newly developed synthetic methods, porous TiO2, approaches for further improving activity TiO2. Various doped metal-loaded heterojunction photocatalysts, mechanisms field environment are summarized this review, provide useful insights new ideas related field.

Language: Английский

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Heterostructure MoO3/g-C3N4 efficient enhances oxidative desulfurization: Rational designing for the simultaneously formation of MoO3 nanoparticle and few layers g-C3N4

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 340, P. 126789 - 126789

Published: Feb. 15, 2024

Language: Английский

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In Situ Generation of H₂O₂ over MoO_x Decorated on Cu₂O@CuO Core–Shell Particle Nanoarchitectonics for Boosting Photocatalytic Oxidative Desulfurization

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(5), P. 5957 - 5964

Published: Jan. 29, 2024

Photocatalytic oxidation desulfurization (PODS) has emerged as a promising, ecofriendly alternative to traditional, energy-intensive fuel methods. Nevertheless, its progress is still hindered due the slow sulfide kinetics in current catalytic systems. Herein, we present MoOx decorated on Cu2O@CuO core-shell catalyst, which enables new, efficient PODS pathway by situ generation of hydrogen peroxide (H2O2) with saturated moist air oxidant source. The photocatalyst delivers remarkable specific activity oxidizing dibenzothiophene (DBT), achieving superior rate 7.8 mmol g-1 h-1, while maintaining consistent performance across consecutive reuses. Experimental investigations reveal that H2O2 produced through two-electron oxygen reduction reaction (ORR), and both hydroxyl radicals (•OH) generated from it act primary reactive species responsible for oxidation. Importantly, our catalyst accomplishes complete real diesel fuel, underscoring an appealing industrial prospect photocatalyst.

Language: Английский

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Construction of 3D mesoporous silica supported MoO3 nanoparticles for the efficient photocatalytic oxidative desulfurization under visible light

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 334, P. 126032 - 126032

Published: Dec. 14, 2023

Language: Английский

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Crystal-Plane-Engineered TiO₂-Anchored Vanadium Single Atoms and Clusters for Boosting Ultradeep Aerobic Oxidative Desulfurization of Diesel

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(2), P. 1488 - 1498

Published: Jan. 4, 2024

The crystal plane effect has gained extensive attention in heterogeneous catalysis reactions; however, it is far from being systematically probed titanium dioxide (TiO2)-supported vanadium catalysts. Herein, a series of (V) single atoms and clusters anchored on TiO2 with different planes was fabricated by an improved "top-down" protocol. dispersion state, electronic structure, redox properties the V single-atom VOx cluster-supported catalysts were analyzed characterization methods, including X-ray absorption near edge structure (XANES) density functional theory (DFT) calculations, their catalytic performances examined for aerobic oxidative desulfurization (AODS) 4,6-dimethyl-dibenzothiophen (4,6-DMDBT) O2 as oxidant. results unveiled that synergistic between atom cluster perceptibly promoted VOx/TiO2 samples. Therein, VOx/TiO2-(001) shows lowest apparent activation energy (Ea) value 46.3 kJ/mol optimal AODS performance complete 4,6-DMDBT conversion to 4,6-dimethyldibenzothiophene sulfone (4,6-DMDBTO2) within 60 min at 120 °C compared VOx/TiO2-(101) (81.9 180 min) VOx/TiO2-(100) (68.0 240 min), which should be attributed its higher V5+/V4+ ratio, behavior species, moderate adsorption active centers, synthetic clusters. Moreover, exhibits robust durability seven cycles reuse, showcasing potential practical applications future.

Language: Английский

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Integration of CeO2 and Bi2O3 nanoparticles with TiO2-x to fabricate QDs-sized visible-light-triggered materials with efficient performances in the photodegradation of contaminants

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 51, P. 104614 - 104614

Published: June 13, 2024

Language: Английский

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Fabrication of Anderson-Polyoxometalates/TiO2/C3N4 heterojunction composite for efficient visible-light-driven photooxidative desulfurization

Molecular Catalysis, Journal Year: 2023, Volume and Issue: 536, P. 112916 - 112916

Published: Jan. 7, 2023

Language: Английский

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Zirconium oxide@N-doped porous carbons with oxygen vacancies, derived from zirconium chloride embedded metal-azolate framework-6: A new oxidative desulfurization catalyst

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 318, P. 123984 - 123984

Published: May 4, 2023

Language: Английский

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Flash Joule‐heating synthesis of MoO₂ nanocatalysts in graphene aerogel for deep catalytic oxidative desulfurization

AIChE Journal, Journal Year: 2024, Volume and Issue: 70(4)

Published: Feb. 7, 2024

Abstract Ultra‐high‐temperature flash Joule‐heating of organometallic precursor‐embedded reduced graphene oxide (rGO) aerogel represents a highly efficient approach for the ultrafast production nanocatalysts, while such methodology has been scarcely applied to 3D nanocarbon‐based monoliths. Herein, we demonstrate rapid synthesis MoO 2 nanoparticles within matrix via 1‐s high‐temperature process (~1700°C), resulting in formation hybrid @rGO with uniformly distributed nanoparticles. Nitrogen adsorption/desorption analysis indicates discernible internal microstructural disparities attributed additional flash‐heating and substantial generation This exhibits exceptional catalytic functionality, achieving up 99.8% efficiency converting dibenzothiophene sulfone. Density functional theory calculations provide insights into mechanism, revealing that Mo center shows accumulated electron density contributed from electron‐rich substrate. enhancement significantly enhances activity, enabling deep desulfurization. The proposed nanocatalyst presented here can be extended fabricate multimetallic nanocatalysts high‐entropy alloys cylindrical entity, exhibiting great potential applications industry‐relevant flow chemistry, electrochemistry, industrial catalysis, beyond.

Language: Английский

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Modification of Liquid Separation Membranes Using Multidimensional Nanomaterials: Revealing the Roles of Dimension Based on Classical Titanium Dioxide

Nanomaterials, Journal Year: 2023, Volume and Issue: 13(3), P. 448 - 448

Published: Jan. 21, 2023

Membrane technology has become increasingly popular and important for separation processes in industries, as well desalination wastewater treatment. Over the last decade, merger of nanotechnology membrane development nanocomposite membranes emerged a rapidly expanding research area. The key motivation driving is pursuit high-performance liquid that can address bottlenecks conventionally used polymeric membranes. Nanostructured materials form zero to three-dimensions exhibit unique dimension-dependent morphology topology have triggered considerable attention various fields. While surface hydrophilicity, antibacterial, photocatalytic properties TiO2 are particularly attractive membranes, geometry-dependent be further fine-tuned by selecting nanostructures with right dimension. This review aims provide an overview comments on state-of-the-art modifications using classical example multidimensional nanomaterials. performances TiO2-incorporated discussed placed special features rendered their structures dimensions. innovations breakthroughs made synthesis structure-controlled its composites enabled fascinating advantageous separation.

Language: Английский

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