TiO2montmorillonite composite (TiO2M) was prepared by impregnation with TiCl4 followed by calcination at 350° C. The synthesized material was characterized by FTIR, TGDTA, BET, XRD and SEM EDX. The results show that TiO2 was efficiently formed in Namontmorillonite (NaM) framework, and only a crystalline, pure anatase phase was produced. Photoactivity tests were carried out under UV-A irradiation using five selected organic dyes. The results indicate that the activity of TiO2M is more important for cationic dyes, where the removal rates are in the order: crystal violet (97.1> methylene blue (93.20> rhodamine B (79.8> methyl orange (36.1> Congo red (22.6%). The results of the TiO2 M activity were compared with that of the commercial P25. The comparison demonstrates that the synthesized TiO2M exhibits a higher adsorptive behavior and can be used as low-cost alternative to the commercial TiO2 for wastewater treatment, showing also an extreme easiness to completely recover the composite catalyst at the end of the test.

Photoactive TiO2-montmorillonite composite for degradation of organic dyes in water

Di Michele A.
Investigation
;
2015

Abstract

TiO2montmorillonite composite (TiO2M) was prepared by impregnation with TiCl4 followed by calcination at 350° C. The synthesized material was characterized by FTIR, TGDTA, BET, XRD and SEM EDX. The results show that TiO2 was efficiently formed in Namontmorillonite (NaM) framework, and only a crystalline, pure anatase phase was produced. Photoactivity tests were carried out under UV-A irradiation using five selected organic dyes. The results indicate that the activity of TiO2M is more important for cationic dyes, where the removal rates are in the order: crystal violet (97.1> methylene blue (93.20> rhodamine B (79.8> methyl orange (36.1> Congo red (22.6%). The results of the TiO2 M activity were compared with that of the commercial P25. The comparison demonstrates that the synthesized TiO2M exhibits a higher adsorptive behavior and can be used as low-cost alternative to the commercial TiO2 for wastewater treatment, showing also an extreme easiness to completely recover the composite catalyst at the end of the test.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/1550234
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 101
  • ???jsp.display-item.citation.isi??? 91
social impact