Article
Biochemistry & Molecular Biology
Maozhang Tian, Xi Chen, Xinyuan Zou, Yuchen Qian, Zhang Liu, Yaxun Fan
Summary: The aggregation behavior of anionic gemini surfactant and cationic monomeric surfactant mixtures was studied, showing that pH and total concentration control can affect the formation of different micelle structures. The mixed system exhibits high viscoelasticity at low pH and certain concentrations, which enhances drug delivery efficiency.
Article
Nanoscience & Nanotechnology
Qintang Li, Chunhua Zhao, Chengya Zhu, Ruirui Wang, Yaochun Zhou, Mingyu Lin, Wenchang Zhuang
Summary: Gemini surfactants consisting of two surfactant monomers can self-assemble into viscoelastic fluids at low concentrations in water. The aggregation behaviors of a quaternary ammonium gemini surfactant with a hydroxyl group on the spacer (16-3OH-16) were studied using various characterization techniques. The samples exhibited elastic gel behavior at room temperature, which transformed into wormlike micelles and behaved as viscoelastic fluids at high temperature. These findings have implications for the design of complex fluids using tailorable gemini surfactants.
Article
Chemistry, Physical
Wenlong Zhang, Lan Wang, Hanxiang Li, Penghai Xu, Fei Yi, Ying Chen, Xingwen Liu, Longyao Wang
Summary: In order to prevent the phase separation caused by the disordered aggregation of viscoelastic surfactant (VES) molecules in high concentrated brines, a steric hindrance group was modified onto the spacer of a Gemini VES to stabilize it in brine. A novel Gemini VES, called VES-BC, with double erucic amide tails was successfully synthesized. Molecular dynamic simulation showed that the steric hindrance group effectively inhibited the disordered aggregation of VES-BC in concentrated brine. Compared to the Gemini cationic VES without steric hindrance group, VES-BC exhibited superior stabilization in brines. The salinity for wormlike micelle (WLM)-driving by VES-BC was comparably high, making it an excellent clean thickener in extremely concentrated brine environments.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Wenlong Zhang, Jincheng Mao, Zhenfu Jia, Xiaojiang Yang, Peng Zhang, Xiaodong Su, Chengyu Zhou, Dan Bao, Wenbi Zeng
Summary: The study introduces a zwitterionic Gemini VES molecule with superior salt-tolerance, which can construct network-like structures in high-salinity aqueous solutions. Experimental and simulation results confirm its excellent performance in high-salinity environments.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Xin-Ning Bao, Wei-Dong Zhang, Hong-Ze Gang, Shi-Zhong Yang, Ying-Cheng Li, Bo-Zhong Mu
Summary: A novel binary system consisting of a cationic surfactant and a counter ion that can form wormlike micelles with high viscosity is proposed. The experimental results show the formation of long elongated wormlike micelles in dilute solution at temperatures exceeding 60 degrees Celsius.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Trang Vu, Peter Koenig, Mike Weaver, Howard D. Hutton, Gerald B. Kasting
Summary: The study focused on the thickening properties of sulfate-free and amino acid-based surfactant systems, revealing mechanisms behind the differences in thickening response compared to traditional sulfate-based formulations. Through experimental analysis of various thickeners, including cationic surfactants and inorganic counterions, insights were gained into the viscoelastic properties and dynamics of micelles in these systems, shedding light on the reasons for their differing thickening behaviors.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Andleeb Z. Naqvi, Kabir-ud-Din, Manorama Panda
Summary: This review focuses on the interactions of gemini surfactants in binary solutions, emphasizing the application of theoretical models in the formation of mixed micelles and various mixed systems. By analyzing existing models, it reveals the mechanisms of interactions between gemini surfactants and other amphiphiles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Huan Li, Xuefeng Liu
Summary: The research demonstrates that dynamic imine surfactants can be constructed in water through the formation of dynamic imine bonds, leading to the creation of dynamic combinatorial libraries. Different amphiphilic DIS have varying effects on stabilizing emulsions, with SBBA-HA (or SBBA-BA) DIS being suitable for stable emulsions while SBBA-OA (or SBBA-DA) DIS is not.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Meng Mu, Xing Zhang, Yan Jiang, Qiang Li, Pingping Lu, Shanjuan Zhao, Yongmin Zhang
Summary: Responsive viscoeslastic fluids based on wormlike micelles have attracted significant interest due to their intelligent rheological response. However, pH-responsive worm-based viscoelastic fluids remain challenging. In this study, a novel pH-responsive worm-based viscoelastic fluid was fabricated using a dynamic covalent gemini surfactant. The gemini imine surfactant could be damaged under acidic conditions and reformed under alkali conditions, allowing the solution to switch between a water-like fluid and a worm-based viscoelastic fluid. Changing the precursors can also tailor the properties of the fluid.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Shasha Jiang, Weilin Qi, Cheng Ma, Tongyue Wu, Xiaoyu Li, Xingyue Chen, Shuitao Gao, Jinwan Qi, Yun Yan, Jianbin Huang
Summary: The precipitates in catanionic surfactant systems can be solubilized by increasing the total surfactant concentrations, resulting in the formation of a high-concentration stable phase.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Polymer Science
Naved Azum, Malik Abdul Rub, Anish Khan, Maha M. Alotaibi, Abdullah M. Asiri, Mohammed M. Rahman
Summary: In this study, the effects of cationic gemini and conventional surfactants on the anesthetic drug tetracaine hydrochloride (TCH) were investigated using tensiometry and UV-visible techniques. Different theoretical models were used to analyze the results and estimate the micellar, interfacial, and energetic constraints. The findings showed that the mixed amphiphiles had a critical micelle concentration between that of the individual amphiphiles, indicating strong synergistic interaction between the components after mixing. Spectral measurements demonstrated that the double chain surfactant (gemini) had better interactions with the drug compared to the single chain surfactant. The study of these mixed systems can help optimize their compositions and discover synergistic properties between TCH monomers and surfactants.
Article
Chemistry, Physical
Xiao Xiao, Jinwan Qi, Jingjie Zhou, Yongqiang Sun, Jianbin Huang, Yun Yan
Summary: Alcohol Ether Sulfates (AES) are becoming popular in the consumer product industry due to their superior properties compared to alkyl sulfate. The addition of NaCl can significantly enhance the viscosity of AES aqueous solution, which is important for better retention of the surfactant. The number distribution of EO groups in AES chains affects the salt-thickening performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Mingwei Zhao, Shichun Liu, Yining Wu, Ruoqin Yan, Yang Li, Xu Guo
Summary: A two-dimensional nanomaterial, nano-MoS2, was found to enhance the viscosity and viscoelasticity of wormlike micellar system, and form a tighter three-dimensional network structure with the micelles.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Weixian Jiao, Zhe Wang, Tongqing Liu, Xuefeng Li, Jinfeng Dong
Summary: This study focused on a novel pH and light dual-responsive Gemini surfactant N3C14AZOC14N3. The self-assembly behaviors of this surfactant in aqueous solutions were highly dependent on pH, and the concentration also affected its physicochemical properties. Additionally, wormlike micelles formed by this surfactant showed pH and light dual-responses, with pH causing protonation variation of amino headgroups and light-induced reversible transition attributed to the isomerization between trans- and cis-azobenzene.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Anqi Du, Jianxun Jiang, Dingli Wang, Jincheng Mao, Changqing Ye
Summary: In this study, the structural transitions of aggregates of a trimeric cationic surfactant in different conditions were investigated using rheological measurements and molecular dynamic simulation. The results showed that the addition of KCl optimized the molecular configuration and promoted the rapid growth of wormlike micelles. Additionally, one of the solutions exhibited excellent rheological properties under specific conditions, suggesting its potential application.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
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)