Abstract
Herein, we synthesized BiOBr/ultrathin g-C3N4/ternary heterostructures modified with black phosphorous quantum dots using a simple water bath heating and sonication method. The ternary heterostructure was then used for the photocatalytic degradation of tetracycline in visible light, with an efficiency as high as 92% after 3 h of irradiation. Thus, the photodegradation efficiency is greatly improved compared to that of ultrathin g-C3N4, BiOBr, and black phosphorous quantum dots alone. The synthesized ternary heterostructure improves the charge separation efficiency, thus increasing the photodegradation efficiency. This work provides a new and efficient method for the degradation of antibiotics in the environment.
Highlights
Given the increasing concern regarding environmental pollution due to antibiotics and growing awareness of anti-microbial resistance, the demand for new methods for antibiotic environmental remediation is increasingly urgent
In order to further improve its photocatalytic performance, we developed a ternary heterostructure of BiOBr/ultrathin g-C3 N4 nanosheet (UCN) decorated with Black phosphorus quantum dots (BPQDs) for the photocatalytic degradation of TC with the required degradation efficiency
High-resolution TEM showed the lattice spacing of BPQDs attached to densely packed BPQDs were evenly distributed on the surface of the BiOBr/UCN composite (Figure 2e)
Summary
Given the increasing concern regarding environmental pollution due to antibiotics and growing awareness of anti-microbial resistance, the demand for new methods for antibiotic environmental remediation is increasingly urgent. There is a need to increase the photocatalytic activity range of g-C3 N4 to achieve a visible light response and higher efficiency. This can be achieved through the production of new photodegradation catalysts based on g-C3 N4. Black phosphorus has received considerable attention from the scientific community because of its excellent performance It is a two-dimensional atomic material similar to graphene, with an energy bandgap that can be regulated by the number of layers, and with a wavelength absorbance ranging from visible light to the infrared [29]. In order to further improve its photocatalytic performance, we developed a ternary heterostructure of BiOBr/UCN decorated with BPQDs for the photocatalytic degradation of TC with the required degradation efficiency
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