首页|Metallophthalocyanine-based covalently cross-linked polymers as a recycled visible-light photocatalyst in pollutants removal
Metallophthalocyanine-based covalently cross-linked polymers as a recycled visible-light photocatalyst in pollutants removal
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NSTL
In this article,we presented a novel and facile method for obtaining a phthalocyanine network polymer via"Thiol-Ene Click"chemistry.A series of metallophthalocyanine-based covalently cross-linked polymers(MTUPc-CCPs,M = Zn,Cu and Co)containing hydrophilic sulfur-containing flexible chain were synthesized successfully,the MTUPc-CCPs had micropores and mesopores coexistence structure and remarkable efficiency for organic dye pollutants and Cr(VI)removal from wastewater.The photocatalytic efficiency of MTUPc-CCPs was significantly improved compared with the corresponding phthalocyanine monomers.Thereinto,ZnTUPc-CCP had the most excellent photocatalytic performances for Methyl orange(MO),Rhodamine B(RhB)degradation and Cr(VI)reduction(3 h,95.4%,93.2% and 100%)under visible-light irradiation.These obtained results can be attributed to the wide spectral response,larger surface area and higher micropore ratio of ZnTUPc-CCP.ZnTUPc-CCP was reused for three consecutive cycles without significant loss of activity or structural changes.Furthermore,active species trapping experiments confirmed the crucial role of O_2~(·-),~1O_2 and OH~·/e~-during photocatalytic degradation/reduction,upon which a possible photocatalytic mechanism was proposed.Above all,ZnTUPc-CCP was a promising potential visible-light photocatalyst on the degradation of complex contaminants.
NSTL
