BiOBr/BiOCl/carbon quantum dot microspheres with superior visible light-driven photocatalysis

Abstract

In this paper, BiOBr/BiOCl/CQDs heterostructure microspheres were successfully synthesized via a facile solvothermal method.

Recent advances in bismuth oxyhalide photocatalysts for degradation of organic pollutants in wastewater

“…Among carbon materials, carbon quantum dots (CQDs) has superior electron transfer/reservoir properties, and photoluminescence (PL) up-conversion effect, which can be used to expand the light utilization range and promote photo-induced electron transfer. 145 Zhao et al 146 synthesized BiOBr/BiOCl/CQDs heterostructure microspheres via a solvothermal method. When used for degradation of Rh B, the BiOBr/BiOCl/CQDs-4% exhibited a high photocatalytic activity under visible light, and the photodegradation rate was 2.8 times higher than that of BiOBr/BiOCl, due to the strong light harvesting capacity and outstanding electron transferability between BiOCl and CQDs.…”

Tailoring metal–support interaction over faceted TiO2 and copper nanoparticles for electrocatalytic nitrate reduction to ammonia

“…4f), respectively. 61,67 The higher rate constant of NO 2 − reduction may indicate the higher binding strength between NO 2 − and the surface of the (101)-dominant Cu-TiO 2 when forming *NO 2 . These results agree well with the lower amount of NO 2 − produced using the (101)-dominant Cu-TiO 2 compared with that produced using the (001)-dominant Cu-TiO 2 in the NO 3 − RR (Fig.…”

Synthesis, Functional Modifications, and Diversified Applications of Hybrid BiOCl-Based Heterogeneous Photocatalysts: A Review

“…The development of photocatalysts with a broad spectral response is an inevitable tendency for meeting market demands. In order to enhance the visible-light-driven photoactivity of two-component BiOCl-based photocatalysts, a large number of BiOCl-based multiple complex systems have been developed in the past few decades. − Thereby, the introduction of materials with a narrow band gap and rapid electron transfer as well as improved light absorption in multiple complex BiOCl-based systems is conducive to boost the fast separation of electron–hole pairs and enhance visible light absorption of BiOCl, leading to an improved photocatalytic activity compared with the two-component BiOCl-based photocatalysts and pristine BiOCl. − …”

“…Carbon, Cdots, GO, , and CQDs ,− with high electroconductibility and enhanced light absorption capability as well as a rapid migration rate of charge carriers have been introduced to successfully fabricate ternary carbon/BiOCl-based composites. Typically, ultrathin Bi/C/BiOX (X = Cl, Br) nanosheets with OVs have been synthesized by a hydrolysis strategy .…”