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Preparation and performance study of bimetallic loaded PTFE hollow fiber catalytic membrane

Authors： ZHENG Lipeng, LIN Haibo, WANG Xiao,LIU Fu

Units：

KeyWords： 1. Institute of Material Science and Chemical Engineering, Ningbo University, Ningbo?315211,?Zhejiang,?China; 2. Ningbo?Institute?of?Materials?Technology?&?Engineering,?Chinese?Academy?of?Sciences, Ningbo?315201,?Zhejiang,?China; 3.University?of?Chinese?Academy?of?Sciences,?Beijing?100049,?China

ClassificationCode：O63

year,volume(issue):pagination： 2023,43(2):24-34

Abstract：

In this study, polytetrafluoroethylene (PTFE) hollow fiber membranes were used as carriers to grow cobalt-iron Prussian blue analogs in situ by hydrophilic and amination modifications, following with calcination at low temperature (300 °C) to obtain cobalt-iron bimetallic loaded PTFE hollow fiber catalytic membranes. The physical and chemical properties of the membranes were characterized by scanning electron microscopy (SEM),Micro-Fourier transform infrared (Micro-FTIR) spectrometer and contact angle (CA) measurement, and the membranes catalytic degradation performance and long-term stability were also investigated. Under cross-flow filtration for 24 h, the catalytic activation of peroxymonosulfate (PMS) produced 1O2 dominated reactive oxygen species (ROSs), achieving instantaneous removal of Rhodamine B(RhB) (> 99%). The effects of pH value, PMS dosage, type and concentration of anions on the catalytic performance were studied. The effects of pH value, the amount of PMS, the type and concentration of anions on the catalytic performance were investigated. The effects of pH, PMS dosage, and anion species and concentration on the catalytic performance were investigated separately. The results showed that the cobalt-iron bimetallic loaded PTFE hollow fiber catalytic membrane could effectively achieve the degradation of organic pollutants in the high-salinity wastewater with good operational stability. It is expected to be used in the actual advanced treatment of industrial wastewater.

Funds：

中科院国际伙伴计划—全球共性挑战专项（181GJHZ2022038GC）；浙江省重点研发计划(2021C03170)

AuthorIntro：

郑礼芃（1997-），男，江西赣州人，硕士，从事膜催化耦合及应用研究，E-mail：zhenglipeng@nimte.ac.cn.

Reference：

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