Article
Biochemistry & Molecular Biology
Erik Ruf, Tim Naundorf, Tom Seddig, Helmut Kipphardt, Wolfgang Maison
Summary: Organic acids derived from oil-based sources are commonly used as corrosion inhibitors in metalworking fluids. However, the criteria for selecting these inhibitors have shifted from performance-driven to include ecological considerations, toxicity, and regulatory standards. This study presents scalable semisynthetic approaches to synthesizing organic corrosion inhibitors from renewable resources. The efficacy of these inhibitors was evaluated for corrosion protection of iron and steel in an aqueous environment. One particular phosphonic acid, derived from castor oil, demonstrated remarkable anticorrosive effects and could potentially serve as a commercially attractive substitute for current acidic corrosion inhibitors.
Article
Biochemistry & Molecular Biology
Aurelia Visa, Nicoleta Plesu, Bianca Maranescu, Gheorghe Ilia, Ana Borota, Luminita Crisan
Summary: The study found that PMG and VPA act as mixed-type inhibitors in 3% NaCl acidic solution, effectively inhibiting the corrosion process of carbon steel iron with inhibition rates of approximately 91% and 85% respectively. A synergic effect of chlorine ions was observed in the presence of PMG. Density functional theory was used to determine the adsorption site and various electronic properties of the inhibitors on the metal surface. The experimental and calculated results are in agreement regarding the inhibition behavior and adsorption of PMG and VPA inhibitors.
Review
Chemistry, Analytical
Andres Felipe Quintero-Jaime, Felipe Conzuelo, Diego Cazorla-Amoros, Emilia Morallon
Summary: The development of effective direct electron transfer for high performance bioelectrodes is an interesting platform. Designing scalable and cost-effective immobilization routes to promote correct direct electrical contacting between the electrode material and the redox enzyme is still necessary. Electrochemical entrapment of PQQ-GDH on SWCNT-modified electrodes enhances electrocatalytic activity towards glucose oxidation. Both entrapment of reconstituted holoenzyme and entrapment of apoenzyme followed by reconstitution show preservation of electrocatalytic activity towards glucose oxidation, with significantly enhanced sensitivity for glucose oxidation using lower amounts of enzyme and cofactor. Single-step electrochemical entrapment in presence of 4-APPA provides a simple method for enzymatic bioelectrode fabrication.
Article
Chemistry, Physical
Caiqin Gao, Mingyi Guo, Yukang Liu, Dingyue Zhang, Fan Gao, Ling Sun, Junshan Li, Xianchun Chen, Mauricio Terrones, Yanqing Wang
Summary: Carbon nanotubes (CNTs) have attracted significant interest as functional materials due to their exceptional mechanical, electrical, thermal, and photoelectric properties. However, the strong Van der Waals force causes CNTs to agglomerate into crystalline bundles, hindering their potential applications. Effective dispersion strategies, such as covalent and non-covalent functionalization, have been proposed to overcome this challenge and improve the self-assembling characteristics of CNTs. Non-covalent modifications, including electrostatic interaction, 7C-7C stacking interaction, dipole interactions, Van der Waals interactions, hydrogen bond, and coordination, are particularly attractive for CNTs dispersion without disturbing their internal electronic structure.
Article
Polymer Science
Benjamin Zanghellini, Patrick Knaack, Sebastian Schoerpf, Karl-Heinz Semlitsch, Helga C. Lichtenegger, Bernhard Praher, Maria Omastova, Harald Rennhofer
Summary: The dispersion of carbon nanotubes and carbon nanofibers is a crucial step in the production of polymer-based nanocomposites, and it is a challenge due to the tendency of nanofillers to agglomerate. While the three-roll mill is an effective method for dispersion, it is time-consuming and limits industrial applications. The study aimed to establish an efficient ultrasonic dispersion process and compare it with the three-roll mill method, using rheological tests and image analysis to characterize dispersion quality and improve the process.
Article
Materials Science, Multidisciplinary
Luca Lavagna, Simone Musso, Matteo Pavese
Summary: This study demonstrates an efficient and easily reproducible method to introduce oxygenated functional groups to carbon nanotubes, without causing significant damage to the treated nanotubes. The results indicate that this method can be potentially applied to functionalize other types of graphitic materials.
Article
Construction & Building Technology
Silas de Andrade Pinto, Cleber Marcos Ribeiro Dias, Daniel Veras Ribeiro
Summary: This study aims to evaluate the effect of CNT incorporation on hydration and physical-mechanical properties of the cementitious matrix. The results show that the use of dispersants and an ultrasonic bath improves the dispersion of CNT in the matrix, and properly dispersed nanoparticles accelerate the hydration of Portland cement and increase the compressive and flexural strength of the cementitious matrix.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Airat Khuzin, Ruslan Ibragimov
Summary: This paper investigates a new type of nanomodifying additive, which is obtained by pre-ultrasonic dispersion of MWCNT globules with different dispersal capacities. The comprehensive nanomodifying additive can enhance the strength and durability of building composite materials.
JOURNAL OF BUILDING ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
Harald Rennhofer, Benjamin Zanghellini
Summary: Dispersion of carbon nanotubes and carbon nanofibers is crucial for producing polymer-based nanocomposites. Ultrasonic dispersion is a commonly used method, with controlling damage and achieving high-quality dispersion requiring specialized knowledge.
Article
Chemistry, Multidisciplinary
Pedro de Almeida Carisio, Yasmim Gabriela dos Santos Mendonca, Carlos Fernando Teodosio Soares, Oscar Aurelio Mendoza Reales, Eduardo de Moraes Rego Fairbairn, Romildo Dias Toledo Filho
Summary: This study investigated four commercial superplasticizers to disperse carbon nanotubes in cement paste, with results showing that second-generation naphthalene-based superplasticizers were more efficient dispersing agents for self-sensing applications compared to third-generation ether polycarboxylate-based ones.
APPLIED SCIENCES-BASEL
(2021)
Review
Chemistry, Applied
Hao-Qiang Cao, Jun-Kuan Li, Fa-Guang Zhang, Dominique Cahard, Jun-An Ma
Summary: This review comprehensively summarizes modern synthetic methods towards asymmetric construction of chiral amino carboxylic-phosphonic acid derivatives, including phosphono-containing amino acid derivatives and catalytic enantioselective synthesis as a potent strategy. Topics such as chiral resolution protocols, chiral auxiliary-directed syntheses, and valorization of abundant chiral amino acid resources are also discussed.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Xun Gong, Liang Shuai, Rachel L. Beingessner, Takeshi Yamazaki, Jianliang Shen, Matthias Kuehne, Kelvin Jones, Hicham Fenniri, Michael S. Strano
Summary: By utilizing supramolecular chemistry of rosette nanotubes, molecularly precise and continuous corona phases are created on single-walled carbon nanotubes. This opens up new possibilities for precision control of core-shell nanoparticle interfaces.
Article
Materials Science, Multidisciplinary
Barbara Martin, Jerome P. Claverie
Summary: The ability to print electronic devices on soft substrates has the potential to revolutionize the world of consumable electronics. Polyimines were used to prepare electronic inks that can undergo depolymerization and evaporation triggered by light and heat, resulting in high-conductivity inks. The use of a laser engraver enabled the direct writing of multiwalled carbon nanotubes on a flexible substrate, demonstrating the potential of polyimines for electronic ink fabrication.
ACS APPLIED POLYMER MATERIALS
(2022)
Review
Construction & Building Technology
Breetha Yesudhas Jayakumari, Elangovan Nattanmai Swaminathan, Pachaivannan Partheeban
Summary: Concrete, composed of aggregates, cement, water, and possible admixtures, has been crucial in the construction industry throughout history. The integration of nanomaterials, particularly carbon nanotubes (CNTs), has facilitated the development of high-strength concrete with enhanced binding properties and the ability to self-heal. These CNTs, which consist of carbon and have nanometer-scale dimensions, offer various benefits such as reduced cracking, permeability, and maintenance, as well as improved durability, strength, and self-sensing capabilities. Their addition also enhances fracture energy and toughness. This paper investigates the dispersion characteristics, microstructure analysis, compressive strength, tensile strength, and flexural strength of CNT-incorporated nano concrete, suggesting its potential as an alternative high-strength concrete in the construction industry.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jinge Zhang, Jinrong Chen, Aiping Zhu
Summary: A novel hyperdispersant, polymethyl naphthol sulfonate (PMNS), is developed to improve the dispersivity of carbon nanotubes (CNT) in a polymer matrix. The resulting aqueous CNT/acrylate grafted epoxy nanocoating exhibits excellent seawater immersion resistance and salt spray resistance, with a 75% improvement compared to unfilled coating. The mechanism behind the corrosion prevention is attributed to the good dispersibility in the polymer matrix and the formation of CNT conductive networks.
JOURNAL OF MATERIALS SCIENCE
(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)