Advances in powder nano-photocatalysts as pollutant removal and as emerging contaminants in water: Analysis of pros and cons on health and environment

Advanced Powder Materials, Journal Year: 2024, Volume and Issue: unknown, P. 100233 - 100233

Published: Sept. 1, 2024

Language: Английский

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Insights into energy and environmental sustainability through photoactive graphene-based advanced materials: perspectives and promises

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Unlocking sustainability with photoactive graphene-based advanced materials for clean energy and environment our present posterity. Green solutions aiming at scalability, stability, cost effectiveness are provided herein.

Language: Английский

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Halide Perovskites for Photoelectrochemical Water Splitting and CO₂ Reduction: Challenges and Opportunities

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(9), P. 6603 - 6622

Published: April 16, 2024

Photoelectrochemical water splitting and CO2 reduction provide an attractive route to produce solar fuels while reducing the level of emissions. Metal halide perovskites (MHPs) have been extensively studied for this purpose in recent years due their suitable optoelectronic properties. In review, we survey achievements field. After a brief introduction photoelectrochemical (PEC) processes, discussed properties, synthesis, application MHPs context. We also state-of-the-art findings regarding significant performance, developments addressing major challenges toxicity instability toward water. Efforts made replace toxic Pb with less materials like Sn, Ge, Sb, Bi. The stability has improved by using various methods such as compositional engineering, 2D/3D perovskite structures, surface passivation, use protective layers, encapsulation. last part, considering experience gained photovoltaic applications, provided our perspective future opportunities. place special emphasis on improvement challenge potential contribution machine learning identify most formulation desired

Language: Английский

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Modulating the electronic structure of macroporous SrTiO3 through cobalt doping for enhance photocatalytic hydrogen evolution

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 80, P. 104 - 114

Published: July 14, 2024

Language: Английский

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Investigating charge dynamics at lead halide perovskite single crystal surfaces

Journal of Physics Energy, Journal Year: 2025, Volume and Issue: 7(2), P. 025005 - 025005

Published: Jan. 17, 2025

Abstract To further develop lead halide perovskites for their application in solar cells, understanding the material’s fundamental behavior under illumination is necessary. Investigating light-induced charge dynamics single crystals can give insight into material inherent properties. Time-resolved photoelectron spectroscopy (TR-PES) allows to monitor photovoltage build-up and decay between sample surface bulk over time gives information on redistribution within crystal. Additionally, this method enables us follow compositional changes degradation distinguish these from purely electronic effects. Here we investigated of two distinct perovskite crystal surfaces (CsPbBr 3 , Cs-doped FAPbI ) using TR-PES different timescales (ps μ s min). It was found that CsPbBr shows rise nanosecond microsecond time-range, which be assigned electron–hole pair separation bulk. On other hand, such electron could not resolved at fast timescales. Instead, observed dominated by much slower relaxation dark equilibrium state took around 10 min. This suggests ion migration responsible a

Language: Английский

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Charge Carrier Dynamics in Mixed-Dimensional CsPbBr3 Perovskites: Transition from 2D to 3D Architectures

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

Language: Английский

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A first-principles study of interfacial vacancies in the β-CsPbI₃/1T-MoS₂ heterostructure towards photocatalytic applications

Physical Chemistry Chemical Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Halide perovskite (HP) composites with transition metal dichalcogenides (TMDs) have attracted attention as promising photocatalysts for hydrogen production through solar-driven water splitting but their working mechanism is yet unclear. Here, we propose novel heterostructures composed of all-inorganic HP β-CsPbI3 and metallic TMD 1T-MoS2 investigate the influence interfacial vacancies on properties using first-principles calculations. Using CsPbI3(001)/MoS2(001) interface slab models a minimal lattice mismatch, calculate formation interlayer binding energies, finding that PbI2-terminated interfaces better stability stronger strength than CsI-terminated ones iodine vacancy enhances properties. Our calculations demonstrate photo-generated electrons are transferred from CsPbI3 to MoS2, inducing dipole moment at prevents recombination holes, this desirable process evolution reaction (HER) enhanced by forming an I vacancy. Through analysis electronic density states, reveal reduces band gap down-shifting its conduction minimum level shallow defect state, being favourable enhancing HER performance MoS2 surface. This work highlights way design advanced based HP/TMD solar energy.

Language: Английский

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Preparation and Characterization of Magnetic Ag₃PO₄/CoFe_1.95Dy_0.05O₄ S-Scheme Heterojunction

Wuhan University Journal of Natural Sciences, Journal Year: 2025, Volume and Issue: 30(1), P. 91 - 102

Published: Feb. 1, 2025

Language: Английский

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Insights into Lead-Free Bismuth-Based Halide Perovskites Toward Alcohol Oxidation Under Blue LED Illumination

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

In recent years, lead halide perovskite materials have been explored as photocatalysts for various organic transformations. However, the toxicity of "lead" has directed further research toward lead-free perovskites. Herein, two bismuth-based perovskites with chemical compositions Cs3Bi2Br9 and Cs3Bi2Br6I3 were synthesized via a modified antisolvent-assisted precipitation method, which resulted in hexagonal morphology materials. was observed to higher bandgap (Eg = 2.5 eV) than 2.0 eV). The photocatalytic activity both studied. Both employed oxidize 1-phenylethanol acetophenone under irradiation blue LEDs (light-emitting diodes, λ 427 nm). oxidation reaction provided 100% conversion after 8 h illumination. only 23% even 14 deep-lying valence band (VB) potential photogenerated holes conduction (CB) reduction electrons Cs3Bi2Br6I3, giving better yield alcohol (1-phenylethanol) oxidation. Furthermore, impedance spectroscopy BET analysis studied gain critical insights into

Language: Английский

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Research progress of polarized perovskite type ferroelectric materials for photocatalytic hydrogen production

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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