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)
Review
Biochemistry & Molecular Biology
Wajih Al-Soufi, Mercedes Novo
Summary: The critical micellar concentration (cmc) is a fundamental property of surfactant solutions, which can be determined using a concentration model and equations for different surfactant properties. This modular concept allows for systematic and unambiguous determination of cmc, and can be applied to study both surfactants as well as non-surfactant systems.
Article
Chemistry, Physical
Siam Hussain, Sheng-Hsiang Hung, Ruey-Yug Tsay, Shi-Yow Lin
Summary: This study investigated the evaporation process of partially dissociated ionic surfactant DTAB and confirmed the feasibility of using contact angle data to determine the critical micelle concentration. It was also found that the movement of a solution drop's triple line during evaporation is primarily dependent on the localized surface morphology.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Sanbao Dong, Jiabao Fan, Hongmiao Lv, Taotao Qiang, Yue Ji, Weiwei Han
Summary: This study developed a foaming formula containing anionic, cationic, and zwitterionic surfactants, and optimized it through foaming ability and foam stability tests. The foaming formula exhibited excellent liquid unloading performance under high salinity, high condensate fraction, and high methanol fraction conditions.
JOURNAL OF SURFACTANTS AND DETERGENTS
(2023)
Article
Chemistry, Physical
Elia Grueso, Rosa M. Giraldez-Perez, Edyta Kuliszewska, Jesus A. Guerrero, Rafael Prado-Gotor
Summary: A new method for detecting DNA and lysozyme biomolecules was developed using gold nanoparticles, with a practical and economical approach. The method showed high sensitivity and immediate results, avoiding issues with time delays seen in previous sensor designs.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
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
Energy & Fuels
Gang Wang, Enmao Wang, Qiming Huang, Shengpeng Li
Summary: The study found that the influence of cationic surfactants on the seepage stage of coal seam water injection first decreases and then increases, while the influence of anionic surfactants shows a gradually increasing trend. Additionally, both cationic and anionic surfactants exhibit more significant wetting effects with increasing concentration. Moreover, cations have stronger adsorption to coal molecules and better water solubility than anions.
Article
Engineering, Environmental
Fuja Sagita, Cynthia L. Radiman, Mia Ledyastuti, Munawar Khalil, Grandprix T. M. Kadja
Summary: This study demonstrated the successful modification of MXene membranes using chloride salts to enhance their performance in dye separation. The KCl-modified MXene membrane showed the highest flux and complete rejection for MB filtration, while the MgCl2-modified MXene membrane exhibited the best performance for CR filtration. All MXene membranes showed high flux-recovery ratios and low fouling, indicating excellent anti-fouling properties.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Physical
Mudussar Ali, Muhammad Usman, Afzal Shah, Abdul Rehman
Summary: Organic dyes, particularly those with hydrophobic properties, face solubility challenges in water-based applications. This study explores the use of various anionic and cationic surfactants to enhance the solubility and stability of a cationic dye, with spectrophotometric data providing insights into partition coefficients and binding constants. Additionally, the study examines the differences between mixed micellar media and solo surfactant systems in terms of binding and partitioning abilities, highlighting the synergistic effects between cationic and anionic components.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Energy & Fuels
Wenfeng Li, Hainan Wang, Xin Li, Yannan Liang, Yongtian Wang, Haijun Zhang
Summary: The mixed surfactants of CTAB and SDS showed high floatability for low-rank coal, with a optimal molar ratio of 1:9. Surface and thermodynamic parameters indicated higher surface activity and denser molecular arrangement in the mixed CTAB/SDS surfactants. Improvements in wetting heat and contact angle suggested a positive effect on enhancing contact angle and restricting surface hydrophilicity of coal.
Article
Chemistry, Physical
Hak-Won Nho, Jae-Heon Park, Aniruddha Adhikari, Oh-Hoon Kwon
Summary: The study revealed that the dynamic charge-state transition during ESPT determined the diffusion and location of the probe, influenced by the abundance of water molecules in the pool. The non-exponential behavior was attributed to the heterogeneity along the reaction coordinates involving the hydrogen-bond network, polarity, and viscosity of the confined water pool within the reverse micelle.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Anastasia Nickerson, Alix E. Rodowa, David T. Adamson, Jennifer A. Field, Poonam R. Kulkarni, John J. Kornuc, Christopher P. Higgins
Summary: This study sampled and analyzed soil and groundwater from an AFFF-impacted site, finding that PFAS concentrations were generally higher at depth than near the surface. In FTA soil, zwitterionic and cationic compounds were the major components of total PFAS mass. The composition of PFAS class, chain length, and structural isomers changed with depth and distance from the FTA, suggesting in situ transformation and differential transport.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Zoya Zaheer, Wafa A. Bawazir, Amal Salmin Basaleh, Basma G. Alhogbi, Soha M. Albukhari
Summary: This paper explores the effects of CTAB and SDS on the formation of silver sols through the redox reaction between coriander seeds extract and silver nitrate. The concentration of CTAB and SDS causes wavelength shifts in the silver sols. Furthermore, the antioxidant activity of the silver nanoparticles depends on their dose.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Risa Kawai, Shiho Yada, Tomokazu Yoshimura
Summary: The study investigated the adsorption and aggregation behavior of different quaternary-ammonium-salt-type amphiphilic compounds with various surfactants, revealing that the surface tension of the mixtures depended on the surfactant structure. The composition and type of mixtures were found to affect the structure of the micelles formed.
Article
Chemistry, Physical
Mengjie Zhang, Mengyao Ma, Zhongmei Miao, Wencui Chai, Yijun Cao
Summary: This study employed coal-based activated carbon as electrode material and modified it with cationic surfactant CTAB and anionic surfactant SDS. The modified activated carbon named CTAB-AC and SDS-AC showed improved conductivity and charge-discharge cycle stability compared to unmodified AC. Asymmetric CDI electrodes made of CTAB-AC and SDS-AC demonstrated significantly enhanced CDI performance, increasing the capacitive deionization capacity and desalination efficiency for NaNO3 by 38.01% and 25.08%, respectively. The continuous batch CDI process was shortened by 10 cycles and the final nitrate concentration met the drinking water requirement.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
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)