Bi₂WO₆ Nanocrystals with High Photocatalytic Activities under Visible Light

Abstract

Visible-light-induced photocatalyst Bi2WO6 with the size of ca. 30 nm has been synthesized via a facile template-free hydrothermal method. The effects of the pH values of the precursor suspensions and hydrothermal time on the photocatalytic activities of the Bi2WO6 nanoplates have been investigated in detail. The photocatalytic activity of as-prepared Bi2WO6 was about 8−10 times higher than that of the product prepared by solid-state reaction, which was evaluated by the degradation of RhB dye in water under visible light irradiation. Even under the illumination of a compact fluorescent lamp, the nanosized Bi2WO6 also exhibited high photocatalytic activity.

A facile modification of g-C3N4 with enhanced photocatalytic activity for degradation of methylene blue

“…Among numerous semiconductors reported, TiO 2 is the most widely researched one because of its excellent photochemical stability, nontoxicity, and high photocatalytic capability [3,4]. However, TiO 2 is able to drive the photocatalysis through excitement by only the ultraviolet light ( < 400 nm), accounting for about 4% of the sunlight, which greatly limits its practical applications [5]. Consequently, much effort has been made on the development of photocatalytic processes that efficiently utilized the visible light, including modification of TiO 2 with metals [6], non-metals [7], semiconductor oxides [8], and photo-sensitizers [9], or development of new type photocatalysts with high activity under a wide range of visible light [10,11].…”

DEGRADATION OF METHYLENE BLUE UNDER SOLAR LIGHT USING QUARTZ – Bi2WO6 NANOCOMPOSITES

“…The preparation of Bi 2 WO 6 powders has been demonstrated many times in studies over the last decade. The most popular method for preparing Bi 2 WO 6 is via hydrothermal or solvothermal methods [31][32][33][34][35][36]. Until now, there was no report on the synthesis of clay modified Bi 2 WO 6 nanoparticles.…”

A Facile Fabrication of Graphene Oxide (GO)/Ag3PO4 Composite to Enhance Its Photocataltytic Activity under Visible Light

“…To date, some visible-light-driven photocatalysts, such as Ag based photocatalysts [6], Bi 2 WO 6 [7], BiVO 4 [8], C 3 N 4 [9] and TiO 2 xNx [10] have been developed for photocatalytic water-splitting and degradation of organics in wastewater. In this paper, we report a facile synthesis of GO/Ag 3 PO 4 composite by chemisorption method.…”