Article
Chemistry, Multidisciplinary
Joao Paulo Vita Damasceno, Lauro Tatsuo Kubota
Summary: This review focuses on the application of established concepts from Colloidal Science to dispersions of graphene and carbon nanotubes, discussing strategies to overcome limitations such as van der Waals interactions. By highlighting the importance of understanding and controlling colloidal interactions, the review showcases the development of environmentally friendly carbon-based colloids and improvements in dispersion systems for two-dimensional materials.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ali Ubeyitogullari, Ozan N. Ciftci
Summary: A novel green method using supercritical carbon dioxide and immobilized lipase was developed to concentrate 0-carotene. The method involves enzymatic reaction for esterification and solvent extraction to isolate fatty acid ethyl esters. The optimized conditions resulted in high conversion and extraction yield, leading to a significant increase in 0-carotene concentration. The approach has potential for the production of functional foods with health-promoting effects.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Materials Science, Multidisciplinary
Linan Wang, Junle Zhang, Xi Zhang, Ge Shi, Yanjie He, Zhe Cui, Xiaomeng Zhang, Peng Fu, Minying Liu, Xiaoguang Qiao, Xinchang Pang
Summary: In this study, liquid metal nanodroplets armored by carbon dots were prepared and showed high colloidal stability. Optimized LMD@CDs were used as functional additives for 3D/4D printing of hydrogels and cross-linked resins. The printing system achieved improved accuracy and differential cross-linking density using the light absorption of LMD@CDs. Additionally, the printed objects exhibited stimulus responses to water and laser irradiation, as well as interesting photoluminescence and electrical conductivity capabilities.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Energy & Fuels
Taegyun Kwon, Eung-Seok Lee
Summary: Through emulsification technique, most of the solvent phases in conductive Nickel paste were replaced with water to form oil-in-water (O/W) Pickering emulsion. Hydrophobic nickel paste (in hexylacetate) came into contact with excess water during preparation, and BaTiO3 (BT) nanoparticle agents (17.2 nm in diameter) were strongly adsorbed on the boundary between the hexylacetate phase and the water phase to form highly stable emulsion paste. The morphology and structure of BT nanoparticles and their components were identified using transmission electron microscopy, thermogravimetric analysis, Time-of-flight secondary ion mass spectroscopy, Fourier transform Infrared, X-ray photoelectron spectra. It was confirmed that the emulsion paste, with nanoparticles acting as emulsifying agents, maintained its initial stability for 5000 hours and exhibited significantly higher stability even at a high temperature of 150 degrees Celsius.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Multidisciplinary Sciences
Filip Simeski, Matthias Ihme
Summary: Supercritical fluids, which have important implications in various scientific and engineering applications, exhibit complex network dynamics associated with localized molecular clusters. This structural and dynamical behavior can be accurately described by a hidden-variable network model, providing a basis to relate fluid microstructure to thermodynamic response functions.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Medicinal
Uttom Nandi, Adejumoke Lara Ajiboye, Preksha Patel, Dennis Douroumis, Vivek Trivedi
Summary: The study demonstrates that SIM-SOL dispersions can be successfully prepared using a solvent-free supercritical fluid process to enhance the dissolution rate of the drug.
Article
Food Science & Technology
Purlen Sezer Okur, Ozan N. Ciftci
Summary: The tomato processing industry generates a large amount of waste, which has negative impacts on the environment. However, this waste contains valuable lycopene, which can be extracted and converted into a stable and easy-to-use powder form using green extraction techniques. This study successfully extracted lycopene from tomato waste and transformed it into free-flowing particles using supercritical carbon dioxide technology. These particles remained stable during storage and could be used as bioactive carriers.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Engineering, Environmental
Liwei Sun, Ming Gao, Shaokun Tang
Summary: The design and synthesis of amino acid-functionalized poly(ionic liquid) materials show promising potential as efficient CO2 adsorbents. Through the use of supercritical foaming technology, porous-P([VBMI][Gly]) with significantly improved CO2 adsorption performance was successfully constructed for the first time.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemical Research Methods
Mahmoud Elhusseiny Mostafa, James P. Grinias, James L. Edwards
Summary: In the analysis of supercritical fluids, pre-mixing the supercritical fluid with an organic solvent can improve electrospray efficiency and analyte charge state. This study developed a nanospray mass spectrometry system that achieved enhanced sensitivity by optimizing flow rates, pressures, and solvent modifiers, compared to conventional methods.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2022)
Article
Chemistry, Physical
Gholamhossein Sodeifian, Ratna Surya Alwi, Fariba Razmimanesh, Mohammadamin Abadian
Summary: The solubility of Dasatinib monohydrate in supercritical carbon dioxide was studied and correlated using different types of models. The experimental results showed that Dasatinib has a high solubility in supercritical carbon dioxide within a certain temperature and pressure range, with the solubility ranging from 0.004-0.082 g/L. Based on the evaluation criteria, the solid-liquid equilibrium model performed superiorly in fitting the solubility data.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Lijuan Yang, William Z. Xu, Dicho Zomaya, Paul A. Charpentier
Summary: This study employed supercritical carbon dioxide (scCO(2)) to impregnate MMA monomer into different types of softwood, and achieved improved wood properties through in-situ polymerization in scCO(2). The results showed that impregnating PMMA into wood greatly improved its material properties, and the supercritical CO2 process provides a novel and green technique for the manufacturing of next generation construction products.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Chemistry, Multidisciplinary
Tao Wang, Xiangyang Liu, Jimin Xu, Waheed Afzal, Maogang He
Summary: This study investigated the gasification of softwood lignin in a supercritical carbon dioxide environment using platinum nanoparticles as catalysts. The results showed that the addition of catalyst increased the amount of CO2 cracking, the production of H-2 and CO molecules, and the reaction rate.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Multidisciplinary
Valeria B. Lopez-Cervantes, Dae Won Kim, Juan L. Obeso, Eva Martinez-Ahumada, Yoarhy A. Amador-Sanchez, Eli Sanchez-Gonzalez, Carolina Leyva, Chang Seop Hong, Ilich A. Ibarra, Diego Solis-Ibarra
Summary: The MOF-type Ni-2(dobpdc) exhibits high chemical stability towards SO2, high capacity for low-pressure SO2 capture, and exceptional cycling performance. Fluorescence experiments demonstrate the remarkable SO2 detection selectivity of Ni-2(dobpdc). Time-resolved photoluminescence experiments provide a plausible mechanism of SO2 detection by this Ni(ii)-based MOF material.
Article
Energy & Fuels
Osei Asafu-Adjaye, Brian Via, Bhima Sastri, Sujit Banerjee
Summary: Using supercritical CO2 to treat black liquor can generate a porous liquid/solid structure and achieve dewatering for improving energy efficiency. The deposited lignin from black liquor can be used as biofuel or chemical feedstock.
Article
Materials Science, Multidisciplinary
Xiaoling Sun, Dongzi Yu, Jiyin Song, Haijuan Kong, Muhuo Yu
Summary: In this study, PAN-based activated carbon nanofibers were used as a carrier and framework for photocatalysts. TiO2 was deposited on the surface of pre-oxidized PAN nanofibers using supercritical carbon dioxide, and the fibers were activated by heat treatment to prepare TiO2/ACNF. The morphology, structure, and specific surface area of the modified nanofibers were analyzed, and the photocatalytic degradation of methyl orange was tested. The results showed that TiO2 nanoparticles can be uniformly loaded on the surface of pre-oxidized PAN nanofibers after supercritical treatment, and the TiO2/ACNF has a high specific surface area of 422.8 m2/g, exhibiting superior adsorption and photocatalytic degradation performance.