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. 2018 Feb 13;8(13):7260-7268.
doi: 10.1039/c7ra11467b. eCollection 2018 Feb 9.

Highly efficient pollutant removal of graphitic carbon nitride by the synergistic effect of adsorption and photocatalytic degradation

Xueping Song  1 , Qin Yang  1 , Mengyun Yin  1 , Dan Tang  1 , Limei Zhou  1
Affiliations

Highly efficient pollutant removal of graphitic carbon nitride by the synergistic effect of adsorption and photocatalytic degradation

Xueping Song et al. RSC Adv. .

Abstract

Environmental remediation based on semiconducting materials offers a green solution for pollution control in water. Herein, we report a novel graphitic carbon nitride (g-C3N4) by one-step polycondensation of urea. The novel g-C3N4 material with a surface area of 114 m2 g-1 allowed the repetitive adsorption of the rhodamine B (RhB) dye and facilitated its complete photocatalytic degradation upon light irradiation in 20 min. This study provides new insights into the fabrication of g-C3N4-based materials and facilitates their potential application in the synergistic removal of harmful organic pollutants in the field of water purification.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Fig. 1
Fig. 1. A schematic of the preparation of novel g-C3N4 and its excellent degradation efficiency via synergistic adsorption and degradation.
Fig. 2
Fig. 2. The (a) XRD patterns and (b) FT-IR spectra of the two samples.
Fig. 3
Fig. 3. The high-resolution N 1s XPS spectra and C 1s XPS spectra of the two samples.
Fig. 4
Fig. 4. The (a) N2 adsorption–desorption isotherms and (b) BJH pore-size distribution curves obtained for two different samples.
Fig. 5
Fig. 5. The SEM patterns of the two different samples.
Fig. 6
Fig. 6. The (a) UV-visible diffuse reflectance spectra and (b) PL emission spectra at an excitation wavelength of 350 nm of the two different samples.
Fig. 7
Fig. 7. The (a) VB XPS spectra and (b) electronic band structures of the two different samples.
Fig. 8
Fig. 8. (a) The adsorption and photocatalytic degradation of RhB. (b) The cycling tests for the adsorption and photocatalytic degradation of RhB using U-300.
Fig. 9
Fig. 9. A schematic of the synergistic adsorption and photocatalytic degradation processes.
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