Rationally designed Ta3N5/BiOCl S-scheme heterojunction with oxygen vacancies for elimination of tetracycline antibiotic and Cr(VI): Performance, toxicity evaluation and mechanism insight

Journal of Material Science and Technology, Год журнала: 2022, Номер 123, С. 177 - 190

Опубликована: Март 21, 2022

Язык: Английский

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A Bifunctional CdS/MoO₂/MoS₂ Catalyst Enhances Photocatalytic H₂ Evolution and Pyruvic Acid Synthesis

Angewandte Chemie International Edition, Год журнала: 2022, Номер 61(44)

Опубликована: Сен. 10, 2022

The best use of photogenerated electrons and holes is crucial to boosting photocatalytic activity. Herein, a bifunctional dual-cocatalyst-modified photocatalyst constructed based on CdS/MoO2 /MoS2 hollow spheres for hydrogen evolution coupled with selective pyruvic acid (PA) production from lactic (LA) oxidation. MoS2 MoO2 are simultaneously obtained the conversion CdMoO4 in one step. In process, function as reduction oxidation centers which accumulate used reaction (HER) PA synthesis, respectively. By monitoring intermediates, two-step single-electron route proposed, initiated by cleavage α-C(sp3 )-H bond LA. LA selectivity can reach ca. 29 % 95 after five-hour reaction,

Язык: Английский

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Review on g-C3N4-based S-scheme heterojunction photocatalysts

Journal of Material Science and Technology, Год журнала: 2022, Номер 125, С. 128 - 144

Опубликована: Апрель 18, 2022

Язык: Английский

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Optimizing Atomic Hydrogen Desorption of Sulfur‐Rich NiS_1+x Cocatalyst for Boosting Photocatalytic H₂ Evolution

Advanced Materials, Год журнала: 2021, Номер 34(6)

Опубликована: Ноя. 23, 2021

Low-cost transition-metal chalcogenides (MSx ) are demonstrated to be potential candidate cocatalyst for photocatalytic H2 generation. However, their -generation performance is limited by insufficient quantities of exposed sulfur (S) sites and strong bonding with adsorbed hydrogen atoms (SHads ). To address these issues, an efficient coupling strategy active-site-enriched regulation electronic structure modification active S developed rational design core-shell Au@NiS1+x nanostructured cocatalyst. In this case, the can skillfully fabricated synthesize modified TiO2 (denoted as /Au@NiS1+x a two-step route. Photocatalytic experiments exhibit that resulting (1.7:1.3) displays boosted rate 9616 µmol h-1 g-1 apparent quantum efficiency 46.0% at 365 nm, which 2.9 1.7 times over /NiS1+x /Au, respectively. situ/ex situ XPS characterization density functional theory calculations reveal free-electrons Au transfer sulfur-enriched NiS1+x induce generation electron-enriched Sδ- centers, boosts desorption Hads rapid formation via weakening SHads bonds. Hence, -mediated mechanism proposed. This work delivers universal simultaneously increasing site number optimizing binding strength between adsorbates.

Язык: Английский

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Sulfur Vacancy and Ti₃C₂T_x Cocatalyst Synergistically Boosting Interfacial Charge Transfer in 2D/2D Ti₃C₂T_x/ZnIn₂S₄ Heterostructure for Enhanced Photocatalytic Hydrogen Evolution

Advanced Science, Год журнала: 2021, Номер 9(4)

Опубликована: Ноя. 21, 2021

Constructing an efficient photoelectron transfer channel to promote the charge carrier separation is a great challenge for enhancing photocatalytic hydrogen evolution from water. In this work, ultrathin 2D/2D Ti3 C2 Tx /ZnIn2 S4 heterostructure rationally designed by coupling ZnIn2 with few-layered via electrostatic self-assembly strategy. The possesses larger contact area and strong electronic interaction at interface, sulfur vacancy on acting as electron trap further enhances of photoinduced electrons holes. As consequence, optimal composite exhibits high rate 148.4 µmol h-1 , which 3.6 times 9.2 higher than that nanosheet flower-like respectively. Moreover, stability significantly improved after . characterizations density functional theory calculation demonstrate synergistic effect cocatalyst can greatly photogenerated carriers, thus

Язык: Английский

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Hybrid Plasmonic Nanomaterials for Hydrogen Generation and Carbon Dioxide Reduction

ACS Energy Letters, Год журнала: 2022, Номер 7(2), С. 778 - 815

Опубликована: Янв. 24, 2022

The successful development of artificial photosynthesis requires finding new materials able to efficiently harvest sunlight and catalyze hydrogen generation carbon dioxide reduction reactions. Plasmonic nanoparticles are promising candidates for these tasks, due their ability confine solar energy into molecular regions. Here, we review recent developments in hybrid plasmonic photocatalysis, including the combination nanomaterials with catalytic metals, semiconductors, perovskites, 2D materials, metal-organic frameworks, electrochemical cells. We perform a quantitative comparison demonstrated activity selectivity fuel liquid phase. In this way, critically assess state-of-the-art photocatalysts production, allowing its benchmarking against other existing heterogeneous catalysts. Our analysis allows identification best performing systems, useful design

Язык: Английский

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Boosting Hydrogen Evolution Performance of a CdS-Based Photocatalyst: In Situ Transition from Type I to Type II Heterojunction during Photocatalysis

ACS Catalysis, Год журнала: 2022, Номер 12(16), С. 10115 - 10126

Опубликована: Авг. 4, 2022

The heterojunction in photocatalysis establishes an internal electric field between the semiconductors, which is one of effective methods for enhancing separation photogenerated carriers semiconductors. Herein, a strategy rationally proposed, performed situ to transform hybrid photocatalyst composed Ni–Co Prussian blue analogue (PBA) and CdS (CP) into another more active consisting NiS (CN) during sulfur sacrificial reagent. coupled component on n-type converted from PBA p-type process, thus constructing p–n achieving good photocatalytic hydrogen evolution reaction (HER) performance. Moreover, carrier transfer mechanism also transition type I CP II CN HER supported by surface photovoltage transient absorption spectroscopy. CP-2 reagent has high amount 176.6 μmol, 13.9 times higher than that pure CdS. Overall, this work develops conversion expanding photocatalysts their

Язык: Английский

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Fabrication of 3D CuS@ZnIn2S4 hierarchical nanocages with 2D/2D nanosheet subunits p-n heterojunctions for improved photocatalytic hydrogen evolution

Chemical Engineering Journal, Год журнала: 2022, Номер 433, С. 134474 - 134474

Опубликована: Янв. 5, 2022

Язык: Английский

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S-scheme CoTiO3/Cd9.51Zn0.49S10 heterostructures for visible-light driven photocatalytic CO2 reduction

Journal of Material Science and Technology, Год журнала: 2022, Номер 124, С. 164 - 170

Опубликована: Апрель 4, 2022

Язык: Английский

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Insight into synergistic effect of Ti3C2 MXene and MoS2 on anti-photocorrosion and photocatalytic of CdS for hydrogen production

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 330, С. 122653 - 122653

Опубликована: Март 17, 2023

Язык: Английский

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