Article
Materials Science, Paper & Wood
Dongwan Son, Seungjun Kim, Jinhyeong Kim, Doyeon Kim, Sujin Ryu, Youngbok Lee, Myungwoong Kim, Hoik Lee
Summary: In this study, a cellulose-based nanofiber membrane with exceptional hydrophilicity and oleophobicity is reported, which allows the penetration of water and rejects organic solvents, avoiding fouling by organic residues. The membrane is fabricated through electrospinning of cellulose acetate and subsequent deacetylation, followed by binding with a zwitterionic copolymer. The resulting membrane exhibits highly selective penetration of the water phase from various oil/water mixtures, with high filtration efficiency and reusability.
Article
Engineering, Chemical
Xinyu Zhang, Zhenglun Lin, Daoji Wu, Ming Xie, Jingtao Xu, Xian Bao, Xiaoxiang Cheng, Ying Wang, Feiyong Chen
Summary: This research demonstrates the fabrication of a robust antifouling RO membrane using the codeposition of Noria with zwitterionic copolymers. The modified membrane shows improved hydrophilicity, reduced roughness, and lower negative charge, leading to an excellent antifouling property during both simulated and actual water treatment processes.
Article
Nanoscience & Nanotechnology
Xinyu Zhang, Jiayu Tian, Ruiyang Xu, Xiaoxiang Cheng, Xuewu Zhu, Ching Yoong Loh, Kaifang Fu, Ruidong Zhang, Daoji Wu, Huixue Ren, Ming Xie
Summary: Breaking the trade-off between filtration performance and antifouling property, this study proposes a novel design route for thin-film nanocomposite nanofiltration membranes, by grafting well-defined zwitterionic copolymers onto polyamide surfaces. The modified membranes exhibit enhanced hydrophilicity, larger surface area, and thinner polyamide layer, resulting in tripled water permeability while maintaining high rejection rate. The modified membrane also demonstrates exceptional antifouling properties in both static and dynamic fouling tests.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Jingfeng Yuan, Dong Zhang, Yanhong Fu, Yifeng Ni, Yiting Wang, Iryna Protsak, Yuting Yang, Yipeng Peng, Jun Tan, Jintao Yang
Summary: The study demonstrates that the unique structural design of grafted copolymers effectively prevents bacteria adhesion and provides reversible surface wettability. This design not only improves the fouling resistance of the membrane, but also enhances the variable water fluid transport efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Chemical
Luyao Deng, Shaolu Li, Yiwen Qin, Longjiang Zhang, Haonan Chen, Zaigong Chang, Yunxia Hu
Summary: The TFC NF membrane grafted with zwitterionic PEI shows enhanced hydration capacity, water permeability, ion selectivity, and antifouling properties compared to other membranes. The zwitterionic PEI mitigates the electrostatic attraction between the membrane surface and protein foulants, resulting in lower flux decline and higher flux recovery, demonstrating improved antifouling performance of the membrane.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yaxu Guan, Shao-Lu Li, Zhenxing Fu, Yiwen Qin, Juntao Wang, Genghao Gong, Yunxia Hu
Summary: In this study, a zwitterionic polymer PEI-CA was synthesized and grafted onto a polyamide RO membrane, resulting in improved hydrophilicity, decreased negative charge, and enhanced water permeance and NaCl rejection. The modification strategy of mixing reagents with arginine and PEI-CA further improved the antifouling performance against SDS. The novel polymer and modified RO membranes demonstrated excellent potential for water treatment.
Article
Engineering, Chemical
Shao-Lu Li, Juntao Wang, Yaxu Guan, Junping Miao, Runsha Zhai, Jindi Wu, Yunxia Hu
Summary: In this study, a series of antifouling RO membranes were fabricated using layer-by-layer interfacial polymerization method. These membranes demonstrated hydrophilicity, reduced surface charge, increased water permeability, high rejection rate, and antibacterial properties, providing a valuable pattern for designing antifouling PA TFC RO membranes.
Article
Engineering, Chemical
A. Kumar, K. Nayak, A. S. Muench, P. Uhlmann, A. Fery, B. P. Tripathi
Summary: Polydopamine and poly(MPC-co-GMA) were combined to create a robust zwitterionic antifouling surface, which exhibited superhydrophilic character and excellent performance in oil-water separation. The modified membrane showed high oil rejection and flux recovery rates, making it a promising solution for long-term water purification and separation applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Siew Kei Lau, Wai Fen Yong
Summary: This review discusses the application of various polymers and nanomaterials in the surface modification of membranes, with a focus on the unique properties of zwitterionic polymers. These modified membranes resist foulants through mechanisms such as hydration layer formation and steric repulsion effect.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Applied
Baoluo He, Peng Wang, Biwen Wang, Yixuan Du, Le Ji, Shujuan Liu, Qian Ye, Feng Zhou
Summary: In this study, zwitterionic molecule-functionalized GLM nanodroplets were successfully prepared, showing excellent antibacterial and antifouling properties. The functionalized nanocomposite coating could be synthesized by blending with self-polishing coating. Moreover, ZDS@GLM nanodroplets could endow the PDMS coating with self-healing properties.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Engineering, Environmental
Nadeem Baig, Asif. Matin, M. Faizan, Deepak Anand, Irshad Ahmad, Safyan A. Khan
Summary: This study reports a surface modification of ultrafiltration membranes with a loose layer of nanosilver immobilized polydopamine, which can effectively be used for fractionating dyes and divalent salts in textile wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Chuanxi Li, Yinqiang Xia, Chunjiang Liu, Renliang Huang, Wei Qi, Zhimin He, Rongxin Su
Summary: Zwitterionic peptides with loop-like structures exhibit better antifouling properties by resisting protein and bacteria adsorption, being more rigid compared to linear-like peptides, reducing interaction with foulants, improving hydrophilicity, and avoiding chain aggregation. This study provides a comprehensive understanding of the conformation effect of zwitterionic peptides, which may contribute to the design of novel antifouling materials in various biomedical applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Shusu Shen, Yang Shen, Yi Wu, Honglin Li, Chang Sun, Ganwei Zhang, Yongfu Guo
Summary: The researchers successfully prepared a novel composite membrane (U1gFx) by depositing UiO-66-NH2 onto a polyvinylidene fluoride membrane and subsequently grafting with perfluoroalkyl polyethoxy acetic acid. The modified membrane exhibited excellent hydrophilic and oleophobic properties, increased porosity and water flux, and demonstrated outstanding oil-water separation performance and anti-fouling property.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Wenshuai Yang, Ziqian Zhao, Mingfei Pan, Lu Gong, Feiyi Wua, Charley Huang, Xiaogang Wang, Jianmei Wang, Hongbo Zeng
Summary: This study hypothesized that PEG polymer can be robustly attached onto substrates with the assistance of a bio-glue layer, and proposed a coating strategy for fabricating stable coatings with outstanding antifouling properties in various environmental engineering applications. Experimental results showed that the PEGDE/LP coating exhibited excellent stability and superior antifouling properties, suitable for separating oil-in-water emulsions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Wenjin Zhou, Mingyang Zhou, Huapeng Zhang, Hongyan Tang
Summary: Inspired by fish scales, superhydrophilic and underwater superoleophobic alumina membranes were fabricated in this study through a reaction with polyethyleneimine, forming a modified layer that showed excellent oil/water separation performance.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2021)
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)