{"title":"用于高效染料分离的稳定表面改性 TpPa-SO3H/PVDF 膜显示出卓越的光催化降解性能","authors":"","doi":"10.1016/j.jwpe.2024.106427","DOIUrl":null,"url":null,"abstract":"<div><div>Fully utilizing the unique characteristics of COFs in surface-modified membranes is an ongoing research focus. Current challenges include ensuring the stability of the COFs separation layer on the membrane surface and developing environmentally friendly production methods for COFs surface-modified membranes. In this study, a simple room-temperature synthesis method was employed to prepare an aqueous colloidal solution of TpPa-SO<sub>3</sub>H. Subsequently, TpPa-SO<sub>3</sub>H nanosheets were loaded onto a hydrophobic PVDF membrane using vacuum filtration, resulting in the TpPa-SO<sub>3</sub>H/PVDF membrane. This green and efficient modification method yielded a defect-free TpPa-SO<sub>3</sub>H layer on the membrane surface, exhibiting excellent hydrophilicity (water contact angle of 50.8°). For dye separation, the TpPa-SO<sub>3</sub>H/PVDF membrane (F2) demonstrated high rejection rates (>98 %) for most dye molecules, along with good recyclability and filtration stability. Even after exposure to extreme acidic conditions, the separation performance of the modified membrane remains consistent, showcasing remarkable acid resistance. Furthermore, the prepared modified membranes exhibited effective photocatalytic degradation of various dyes (>90 %) as well as excellent stability and reusability. The modified membrane has shown significant self-cleaning effects in the three cycles of photocatalytic self-cleaning performance testing. This effectively demonstrates its potential in the domain of photocatalytic self-cleaning, exhibiting its capabilities and viability in the respective field.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":null,"pages":null},"PeriodicalIF":6.3000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Stable surface-modified TpPa-SO3H/PVDF membrane for efficient dye separations showing excellent photocatalytic degradation performance\",\"authors\":\"\",\"doi\":\"10.1016/j.jwpe.2024.106427\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Fully utilizing the unique characteristics of COFs in surface-modified membranes is an ongoing research focus. Current challenges include ensuring the stability of the COFs separation layer on the membrane surface and developing environmentally friendly production methods for COFs surface-modified membranes. In this study, a simple room-temperature synthesis method was employed to prepare an aqueous colloidal solution of TpPa-SO<sub>3</sub>H. Subsequently, TpPa-SO<sub>3</sub>H nanosheets were loaded onto a hydrophobic PVDF membrane using vacuum filtration, resulting in the TpPa-SO<sub>3</sub>H/PVDF membrane. This green and efficient modification method yielded a defect-free TpPa-SO<sub>3</sub>H layer on the membrane surface, exhibiting excellent hydrophilicity (water contact angle of 50.8°). For dye separation, the TpPa-SO<sub>3</sub>H/PVDF membrane (F2) demonstrated high rejection rates (>98 %) for most dye molecules, along with good recyclability and filtration stability. Even after exposure to extreme acidic conditions, the separation performance of the modified membrane remains consistent, showcasing remarkable acid resistance. Furthermore, the prepared modified membranes exhibited effective photocatalytic degradation of various dyes (>90 %) as well as excellent stability and reusability. The modified membrane has shown significant self-cleaning effects in the three cycles of photocatalytic self-cleaning performance testing. This effectively demonstrates its potential in the domain of photocatalytic self-cleaning, exhibiting its capabilities and viability in the respective field.</div></div>\",\"PeriodicalId\":17528,\"journal\":{\"name\":\"Journal of water process engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2024-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of water process engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214714424016593\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of water process engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214714424016593","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Fully utilizing the unique characteristics of COFs in surface-modified membranes is an ongoing research focus. Current challenges include ensuring the stability of the COFs separation layer on the membrane surface and developing environmentally friendly production methods for COFs surface-modified membranes. In this study, a simple room-temperature synthesis method was employed to prepare an aqueous colloidal solution of TpPa-SO3H. Subsequently, TpPa-SO3H nanosheets were loaded onto a hydrophobic PVDF membrane using vacuum filtration, resulting in the TpPa-SO3H/PVDF membrane. This green and efficient modification method yielded a defect-free TpPa-SO3H layer on the membrane surface, exhibiting excellent hydrophilicity (water contact angle of 50.8°). For dye separation, the TpPa-SO3H/PVDF membrane (F2) demonstrated high rejection rates (>98 %) for most dye molecules, along with good recyclability and filtration stability. Even after exposure to extreme acidic conditions, the separation performance of the modified membrane remains consistent, showcasing remarkable acid resistance. Furthermore, the prepared modified membranes exhibited effective photocatalytic degradation of various dyes (>90 %) as well as excellent stability and reusability. The modified membrane has shown significant self-cleaning effects in the three cycles of photocatalytic self-cleaning performance testing. This effectively demonstrates its potential in the domain of photocatalytic self-cleaning, exhibiting its capabilities and viability in the respective field.
期刊介绍:
The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies