Corrosion-Resistant Polymer-Derived SiOC Membrane for Effective Organic Removal via Synergistic Adsorption and Peroxymonosulfate Activation  

作　　者：Jiankun Ji Yarong Gu Jianning Zhang Chongwen Yu Xiao Hu Yueping Bao Yujie Song 

机构地区：[1]School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China [2]Zhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications,Ningbo Key Laboratory of Special Energy Materials and Chemistry,Center for Advanced Organosilicon Precursors,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China [3]Qianwan Institute of CNITECH,Ningbo 315336,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]School of Materials Science and Engineering,Nanyang Technological University,Singapore 639798,Singapore [6]College of Environmental Science and Engineering,Nankai University,Tianjin 300350,China [7]Advanced Energy Science and Technology Guangdong Laboratory,Huizhou 516029,China

出　　处：《Transactions of Tianjin University》2024年第3期238-249,共12页天津大学学报（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2021YFB3200500);Natural Science Foundation of China(Grant No.52370014);Ningbo 3315 plan(Grant No.2018A-03-A);Natural Science Foundation of Tianjin City(Grant No.63241631);the financial support of Joint Lab for Advanced Organosilicon Precursors with Zhejiang Xinshichen New Materials Ltd.Co.

摘　　要：A major challenge is to construct ceramic membranes with tunable structures and functions for water treatment.Herein,a novel corrosion-resistant polymer-derived silicon oxycarbide(SiOC)ceramic membrane with designed architectures was fabricated by a phase separation method and was applied in organic removal via adsorption and oxidation for the first time.The pore structure of the as-prepared SiOC ceramic membranes was well controlled by changing the sintering temperature and polydimethylsiloxane content,leading to a pore size of 0.84–1.62μm and porosity of 25.0–43.8%.Corrosion resistance test results showed that the SiOC membranes sustained minimal damage during 24 h exposure to high-intensity acid–base conditions,which could be attributed to the chemical inertness of SiOC.With rhodamine 6G(R6G)as the model pollutant,the SiOC membrane demonstrated an initial eff ective removal rate of 99%via adsorption;however,the removal rate decreased as the system approached adsorption saturation.When peroxymonosulfate was added into the system,efficient and continuous degradation of R6G was observed throughout the entire period,indicating the potential of the as-prepared SiOC membrane in oxidation-related processes.Thus,this work provides new insights into the construction of novel polymer-derived ceramic membranes with well-defined structures and functions.

关 键 词：Polymer-derived ceramics MEMBRANE Corrosion resistance ADSORPTION Oxidation 

分 类 号：TQ051.893[化学工程] TQ174.1[环境科学与工程—环境工程] X703