MIL-53(Fe)was successfully prepared and deposited on the surface carboxylated polyester(PET)fiber by an optimized conventional solvothermal or industrialized high temperature pressure exhaustion(HTPE)process to develop a PET fiber supported MIL-53(Fe)photocata-lyst(MIL-Fe@PET)for the degradation of polyvinyl alcohol(PVA)in water under light emit-ting diode(LED)visible irradiation.On the basis of several characterizations,MIL-Fe@PET was tested for the photocalytic ability and degradation mechanism.It was found that tem-perature elevation significantly enhanced the formation and deposition of MIL-53(Fe)with better photocatalytic activity.However,higher temperature than 130℃was not in favor of its photocatalytic activity.Increasing the number of surface carboxyl groups of the modified PET fiber could cause a liner improvement in MIL-53(Fe)loading content and photocatalytic ability.High visible irradiation intensity also dramatically increased photocatalytic ability and PVA degradation efficiency of MIL-Fe@PET.Na2S2O8 was used to replace H202 as elec-tron acceptor for further promoting PVA degradation in this system.MIL-Fe@PET prepared by HTPE process showed higher MIL-53(Fe)loading content and slightly lower PVA degrada-tion efficiency than that prepared by solvothermal process at the same conditions.These findings provided a practical strategy for the large-scale production of the supported MIL-53(Fe)as a photocatalyst in the future.

Liran Bian;Yongchun Dong;Biao Jiang

Division of Textile Chemistry and Environmental Care,School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composite of Ministry of Education,Tiangong University,Tianjin 300387,China

环境科学学报（英文版）

[1]Liran Bian;Yongchun Dong;Biao Jiang-.Simplified creation of polyester fabric supported Fe-based MOFs by an industrialized dyeing process:Conditions optimization,photocatalytics activity and polyvinyl alcohol removal)[J].环境科学学报（英文版）,2022(06):52-67

photocatalytics,photocalytic

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