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Pyrochlore oxides as visible light-responsive photocatalysts

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TLDR
In this paper, the authors report the progress over the last 5 years in the use of pyrochlore-like oxides as promising photocatalysts for various applications, namely, optimisation of their preparation method, band gap engineering, incorporation of plasmonic metals, and creation of heterojunctions.
Abstract
Heterogeneous photocatalysis has been considered as one of the most attractive alternative routes to transform naturally abundant, clean, and sustainable solar energy into chemical energy. Considering efficient solar-energy utilisation, the development of new materials that are sensitive to visible light is an important direction in the theory and practice of heterogeneous photocatalysis. In recent years, many efforts have been focused on the development of pyrochlore oxides as visible light-responsive photocatalysts for the degradation of dyes, water splitting, and CO2 reduction. The interest in pyrochlores is attributed to their compositional flexibility to manipulate the electron/hole mobility by introducing a wide range of elements into their structure. The present perspective reports the progress over the last 5 years in the use of pyrochlore-like oxides as promising photocatalysts for various applications. A special focus of this perspective is on the strategies for the enhancement of the photocatalytic activity of pyrochlores, namely optimisation of their preparation method, band gap engineering, incorporation of plasmonic metals, and creation of heterojunctions.

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Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

TL;DR: In this article , a critical review reports progress over the last 5 years in the preparation and activity of metal-organic framework-based heterojunction photocatalysts for the degradation of organic pollutants.
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Enhanced Photocatalytic Degradation of Tetracycline and Oxytetracycline Antibiotics by BiVO4 Photocatalyst under Visible Light and Solar Light Irradiation

TL;DR: In this article , a bismuth vanadate (BiVO4) photocatalyst was used for the complete removal of toxic antibiotics in aqueous solutions and the photocatalytic degradation of the antibiotics correlates well with a first-order reaction with a high rate constant of 0.0102 min−1.
Journal ArticleDOI

Regulating of MnO2 photocatalytic activity in degradation of organic dyes by polymorphic engineering

TL;DR: Different phase nanostructured MnO2, including α-, β-, γ-, and δ-MnO2 were prepared by a hydrothermal route and compared for the degradation of cationic (methylene blue) and anionic (methyl orange) dyes were compared as discussed by the authors .
Journal ArticleDOI

Facile Fabrication of N‐Doped K2Nb2O6 Nanocrystals with Defective Pyrochlore Structure for Improved Visible‐Light Photocatalytic Hydrogen Production

TL;DR: In this article , porous N-doped K2Nb2O6 nanocrystals with defective pyrochlore structure are rationally designed to extend the absorption range from ultraviolet to visible region around 550 nm by NH3 heat treatment.
Journal ArticleDOI

Synthesis and Characterization of Bi2WxMo1−xO6 Solid Solutions and Their Application in Photocatalytic Desulfurization under Visible Light

TL;DR: In this paper , the photocatalytic activity of Bi2WxMo1−xO6 solid solutions was investigated in the oxidative desulfurization of hydrocarbons under visible light irradiation using hydrogen peroxide as an oxidant.
References
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Electrochemical Photolysis of Water at a Semiconductor Electrode

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Journal ArticleDOI

Understanding TiO2 photocatalysis: mechanisms and materials.

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Recent Developments in Photocatalytic Water Treatment Technology: A Review

TL;DR: For the first time, a multi-variables optimization approach is described to determine the optimum operation parameters so as to enhance process performance and photooxidation efficiency in the photocatalytic water treatment process.
Journal ArticleDOI

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Die Gesetze der Krystallochemie

TL;DR: In this paper, the authors present a Vorstellung geben, wie die Normalschgidelife einer zuki~n]tigen Menschheit unter Annahme einer derartig geradtinigen Weiterentwickinng auf eingeschlagenem Tege aussehen wtirde.
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