Exploitation of Ag₃PO₄ Impregnated Alginate Beads for the Photocatalytic Degradation of Dye Solution under Sunlight Irradiation

Abstract:

Ag₃PO₄-alginate beads (AAB) were synthesized by simple precipitation method and their structure was characterized by XRD, FT-IR and SEM/EDS, respectively. The AAB was evaluated as the photocatalyst for degradation of methylene blue (MB) under sunlight irradiation. The results showed that AAB exhibited the high performance for degradation of MB (97.6%) in 60 min. The kinetic studied demonstrated that the photocatalytic reactions followed the pseudo first-order model. Moreover, AAB can maintain full photodegradation activity for at least five cycles. Consequently, the AAB are promising materials for the photocatalytic of dyes or similar organic contaminant in environmental pollution cleanup.

• Periodical: Key Engineering Materials (Volume 751)
• Pages: 689-694
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.751.689
• Online since: August 2017
• Authors: Katnanipa Wanchai*
• Keywords: Ag₃PO₄-Alginate Beads, Methylene Blue, Photocatalytic, Sunlight Irradiation

References

[1] H. Katsumata, T. Hayashi, M. Taniguchi, T. Suzuki, Highly efficient visible-light driven AgBr/Ag3PO4 hybrid photocatalysts with enhanced photocatalytic activity, Matter. Sci. 25(2014)68-75.

DOI: 10.1016/j.mssp.2014.01.033

[2] X. Yao, X. Liu, D. Zhu, C. Zhao, L. Lu, Synthesis of cube-like Ag/AgCl plasmonic photocatalyst with enhanced visible light photocatalytic activity, Catal. Commun. 59(2015)151-155.

DOI: 10.1016/j.catcom.2014.10.012

[3] H. Iric, Y. Watanabe, K. Hashimoto, Nitrogen-concentration dependence on photocatalytic activity of TiO2-xNx powders, J. Phys. Chem. B. 97(2003)5483-5486.

[4] Y. Cong, J.L. Zhang, F. Chan, M. Anpo, Preparation, Photocatalytic Activity, and Mechanism of Nano-TiO2 Co-Doped with Nitrogen and Iron (III), J. Phys. Chem. C. 111(2007)10618-10623.

DOI: 10.1021/jp0727493

[5] K. Wanchai, Photocatalytic Degradation of Phenol by Impure BiFeO3 under Visible Light Irradiation, Key Eng. Mater. 659(2015)274-278.

DOI: 10.4028/www.scientific.net/kem.659.274

[6] Z. Yi, J. Ye, N.K. Kikugawa, T. Kako, S. Ougang, H. S. Williams, H. Yang, J. Cao, W. Luo, Z. Li, Y. Liu, R.L. Withers, An orthophosphate semiconductor with photooxidation properties under visible-light irradiation, Nat. Matter. 9(2010)559-564.

DOI: 10.1038/nmat2780

[7] R. Li, X. Song, Y. Huang, Y. Fang, M. Jia, M. Ma, Visible-light photocatalytic degradation of azo dyes in water by Ag3PO4: An unusual dependency between adsorption and the degradation rate on pH, J. Mol. Catal. A. 421(2016)57-65.

DOI: 10.1016/j.molcata.2016.05.009

[8] J. Wang, F. Teng, M.D. Chen, J.J. Xu, Y.Q. Song, X.L. Zhou, Facile synthesis of novel Ag3PO4 tetrapods and the {110} facets-dominated photocatalytic activity, Cryst. Eng. Comm. 15(2013)39-42.

DOI: 10.1039/c2ce26060c

[9] K. Wang, J. Xu, N. Li, M. Chen, F. Teng, Y. Zhu, W. Yao, Highly efficient photodegradation of RhB-MO mixture dye wastewater by Ag3PO4 dodecahedrons under acidic condition, J. Mol. Cat. A: Chem. 393(2014)302-308.

DOI: 10.1016/j.molcata.2014.06.026

[10] Z. Majinia, A. Idris, Photocatalytic reduction of iodine in radioactive waste water using maghemite and titania nanoparticles in PVA-alginate beads, J. Taiwan Inst. Chem. Eng. 54(2015)137-144.

DOI: 10.1016/j.jtice.2015.03.005

[11] M.H. Farzana, S. Meenakshi, Photo-Decolorization and Detoxification of Toxic Dyes Using Titanium Dioxide Impregnated Chitosan Beads, Int. J. Biol. Macromol. 72(2015)1265-1271.

DOI: 10.1016/j.ijbiomac.2014.07.021

[12] X. Zhang, X. Zhao, H. Su, Degradation characteristic of TiO2-chitosan adsorbent on Rhodamine B and purification of industrial wastewater, J. Chem. Eng. 28(2011)1241-1246.

DOI: 10.1007/s11814-010-0501-3

[13] X. Tao, J. Su, L. Wang, A new heterogeneous catalytic system for wastewater treatment: Fe-immobilized polyelectrolyte microshells for accumulation and visible light-assisted photooxidative degradation of dye pollutants, J. Chem. Appl. Catal. A. 280(2008).

DOI: 10.1016/j.molcata.2007.11.006

[14] Y. Dong, W. Dong, Y. Cao, Z. Han, Z. Ding, Preparation and catalytic acitivity of Fe alginate gel beads for oxidative degradation of azo dyes under visible light irradiation, Catal. Today. 175(2011)346-355.

DOI: 10.1016/j.cattod.2011.03.035

[15] M. Ge, M. Zhu, N. Zhao, Y.P. Li, L. Liu, Sunlight-assisted degradation of dye pollutants in Ag3PO4 suspension, Ind. Eng. Chem. Res. 51(2012)5167-5173.

DOI: 10.1021/ie202864n

[16] U. I. Gaya, A.H. Abdullah, Heterogeneous photocatalytic degradation of organic contaminants over titanium dioxide: A review of fundamentals, progress and problems, J. Photochem. Photobiol. Chem. 9(2008)1-2.

DOI: 10.1016/j.jphotochemrev.2007.12.003

[17] S. Sarkar, S. Chakraborty, C. Bhattacharjee, Photocatalytic degradation of pharmaceutical waste by alginate supported TiO2 nanoparticles in packed bed photo reactor (PBPR), Ecotox. Environ. Safe. 121(2015)263-270.

DOI: 10.1016/j.ecoenv.2015.02.035

[18] L.Y. Yang, S.Y. Dong, J.H. Sun, J.L. Feng, Q.H. Wu, S.P. Sun, Microwave-assisted preparation, characterization and photocatalytic properties of a dumbbell-shaped ZnO photocatalyst, J. Hazard, Matter., 179(2010)438-443.

DOI: 10.1016/j.jhazmat.2010.03.023

[19] L. Song, Y. Li, H. Tian, X. Wu, S. Fang, S. Zhang, Synthesis of AgBr/Ag4P2O7 composite photocatalyst and enhanced photocatalytic performance, Mater. Sci. Eng. B. 189(2014)70-75.

DOI: 10.1016/j.mseb.2014.08.001