AI Article Synopsis
- The study investigates the photocatalytic capabilities of a CdMoO4/g-C3N4 composite for breaking down rhodamine B (RhB) and converting CO2 into fuels.
- The composite was created using a mixing-calcination method and analyzed using various techniques, indicating an increase in BET surface area and efficient electron-hole pair separation due to the heterojunction structure.
- The optimal composite demonstrated a degradation rate of RhB that was 6.5 times faster than pure g-C3N4 and achieved a CO2 conversion rate significantly higher than g-C3N4 and P25 under simulated sunlight.
Article Abstract
This research was designed for the first time to investigate the activities of CdMoO4/g-C3N4 heterojunction in photocatalytic degradation of rhodamine B (RhB) and converting CO2 to fuels. The composite was synthesized via a simple mixing-calcination method and characterized by various techniques including Brunauer-Emmett-Teller method (BET), X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, photoluminescence spectroscopy, and electrochemical method. The results showed that the introduction of CdMoO4 to g-C3N4 exerted little effect on the property of light absorption, but resulted in an increase in the BET surface area, which was beneficial for the adsorption of RhB. More importantly, formation of a hetero-junction structure between CdMoO4 and g-C3N4 significantly promoted the separation of electron-hole pairs and ultimately enhanced the photocatalytic activity. The optimal CdMoO4/g-C3N4 composite could degrade RhB 6.5 times faster than pure g-C3N4 under visible light irradiation. Meanwhile, the composite showed a CO2 conversion rate of 25.8 μmol h(-1) gcat(-1), which was 4.8 and 8.1 times higher than those of g-C3N4 and P25, respectively, under simulated sunlight irradiation. This work might represent an important step in simultaneous environmental protection and energy production by g-C3N4 based materials.
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| http://dx.doi.org/10.1016/j.jhazmat.2015.06.036 | DOI Listing |
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