Article
Chemistry, Physical
Nahid Molaei, Omar Bashir Wani, Erin R. Bobicki
Summary: Mitigation of colloid clay particles is crucial in flotation and flocculation processes in mineral processing. Traditional mitigation reagents have negative impacts on the environment and human health, thus biologically derived substances are gaining attention as alternative reagents. This study investigated the adsorption characteristics of three biopolymers on the anisotropic edge and basal plane surfaces of clays, providing insights into their interactions with clay surfaces during selective flotation and flocculation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Dan Li, Tao Hua, Jiren Yuan, Feigao Xu
Summary: A novel adsorbent called magnetic humic acid/graphene oxide composite (MHAGO) has been prepared for treating methylene blue (MB) from wastewater. The MHAGO showed high adsorption capacity for MB, and the adsorption process was found to be well described by certain kinetic and isotherm models.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Analytical
Li -Shang Liu, Jong-Min Kim, Woo-Sik Kim
Summary: A novel strategy utilizing quartz crystal microbalance (QCM) was developed for in situ discrimination of polymorphic nucleation and phase transformation of sulfamerazine (SMZ). Through surface modification with the self-assembled monolayer technique, QCM can selectively detect the formation of two polymorphs and monitor their phase transformation.
ANALYTICA CHIMICA ACTA
(2022)
Article
Biochemistry & Molecular Biology
Paulina Komorek, Elisha Martin, Barbara Jachimska
Summary: The study aimed to analyze the adsorption of lysozyme at the water/gold surface at pH 7.5 in a wide range of concentrations. Various techniques showed changes in molecular orientation and hydration levels depending on the surface coverage. The increase in layer filling led to an increase in rigidity and determined the stability of the protein structure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Xiaomin Ma, Xiaosong Sun, Ming Chang, Qingxia Liu, Xianshu Dong, Yuping Fan, Ruxia Chen
Summary: This study examines the interaction between montmorillonite and polyacrylamide (PAM) with different ionic types using QCM-D and MD simulations. The study found that pH decrease led to increased montmorillonite adsorption on the alumina surface. CPAM had the strongest adsorption mass, followed by NPAM, and APAM had the lowest adsorption. CPAM also had the strongest bridging effect, while APAM had a negligible effect. MD simulations showed that the ionicity had a significant influence on the adsorption of polyacrylamides, with the cationic functional group having the strongest attraction.
Article
Chemistry, Physical
Maria Martinez-Negro, Jennifer Oberlaender, Johanna Simon, Volker Mailaender, Svenja Morsbach, Katharina Landfester
Summary: One critical aspect of biomedical material design is controlling plasma protein adsorption to modulate material behavior in biological media. However, there is limited knowledge about the interaction between human plasma and planar surfaces under physiological conditions. To address this challenge, a new methodology combining quartz crystal microbalance with dissipation monitoring (QCM-D) and liquid chromatography coupled with mass spectrometry (LC-MS) has been developed to study protein-surface interactions. This approach provides information on adsorbed protein mass, layer thickness, and proteomic profile.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Biophysics
Urban Ajdnik, Thomas Luxbacher, Lidija Fras Zemljic
Summary: Controlling protein adsorption on biomaterial surfaces is crucial for successful biointegration. In this study, a combination of electrokinetic measurements and quartz crystal microbalance was used to understand the adsorption phenomena of blood proteins on polysaccharide-based biointerfaces. The results show that the functionalized surfaces have suppressed protein affinity compared to hydrophobic surfaces.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Engineering, Chemical
Deniz Karatas, Muhammed Fatih Can, Cengiz Karaguzel, Mehmet S. Celik, Zhenghe Xu
Summary: The adsorption of HTAB and octanol on silica surface was investigated using QCM-D and MD simulations. QCM-D results showed improved adsorption properties with the addition of octanol due to co-adsorption and hydrophobic forces. MD simulations further confirmed the enhanced interaction between HTAB and the silica surface in the presence of octanol.
MINERALS ENGINEERING
(2023)
Article
Environmental Sciences
Sara Ramos dos Santos, Judith Schellekens, Peter Buurman, Jean-Thomas Cornelis, Karen Vancampenhout, Wilson Tadeu Lopes da Silva, Plinio Barbosa de Camargo, Pablo Vidal-Torrado
Summary: Complexation of dissolved organic matter (DOM) with cations and minerals plays a significant role in soil carbon stabilization and metal transport in the environment. Understanding the mechanisms controlling DOM binding properties in the soil is crucial for addressing major environmental challenges. However, the impact of DOM source on these mechanisms remains understudied.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Asmita S. Jadhav, Prajakta Ramteke, Sunit K. Singh, Nitin K. Labhasetwar
Summary: The study demonstrated that the Al-Fe mixed oxide has efficient adsorption capabilities for selenium contamination in water, effectively removing selenium ions at different pH ranges without significant decrease in adsorption efficiency. Additionally, the adsorbent can be regenerated with mild alkali and reused multiple times without a notable reduction in adsorption efficiency.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Chemistry, Multidisciplinary
Eugene P. Meshcheryakov, Sergey Reshetnikov, Mariya P. Sandu, Alexey S. Knyazev, Irina A. Kurzina
Summary: The review discusses the main methods of obtaining hydroxides and aluminium oxides from gibbsite, as well as techniques for improving the adsorbent properties of aluminium oxide adsorbents. The study shows that modification can significantly enhance the adsorption activity of the adsorbents.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Yuxi Fang, Xi Liu, Jing Ai, Gui Zhao, Liwei Chen, Shunai Che, Lu Han
Summary: This study fabricated chiral Cu films (CCFs) and found that the chiral inorganic surfaces exhibited enantioselectivity for both D-ribose and L-amino acids, providing important clues for the origin of chirality in life.
CHEMISTRY OF MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Yingnan Wang, Zhanbin Huang, Linlin Sheng, Mengmeng Zhao, Junyi Feng
Summary: Humic acid residue (HAS) was utilized to prepare an NH4H2PO4 modified material (NH4H2PO4-HAS) for the efficient adsorption of Pb2+ in aqueous solutions. The adsorption equilibrium was well fitted with the Langmuir isotherm model and the kinetic adsorption data followed the pseudo-second-order model. The thermodynamic parameters indicated that the adsorption process was spontaneous and more favorable at high temperatures. The adsorption mechanism involved physical adsorption, surface complexation adsorption, and precipitation of Pb2+ by NH4H2PO4-HAS.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Fande Meng, Yuwei Zhang, Yongbing Cai, Guodong Yuan, Feng X. Han
Summary: This study investigated the kinetic and thermodynamic features of Pb(II) adsorption onto a humic acid derived from leonardite. The results showed that Pb(II) adsorption followed a pseudo-second-order model and was exothermic and spontaneous. The leonardite-derived humic acid was found to be an excellent adsorbent for removing Pb(II) from aqueous solutions.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Materials Science, Multidisciplinary
Diethelm Johannsmann, Judith Petri, Christian Leppin, Arne Langhoff, Hozan Ibrahim
Summary: Fouling at a hot reactor wall during emulsion polymerization was studied in situ using QCM-D. Transient maxima in resonance bandwidth were observed, which cannot be explained by film resonance theory. The presence of particulate nature in the sample explains the observed phenomena. Simulation based on FD-LBM supports this argument and demonstrates the capabilities of FD-LBM.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Mohamed Eita, Abdulrahman El Labban, Federico Cruciani, Anwar Usman, Pierre M. Beaujuge, Omar F. Mohammed
ADVANCED FUNCTIONAL MATERIALS
(2015)
Article
Chemistry, Multidisciplinary
Ghada H. Ahmed, Shawkat M. Aly, Anwar Usman, Mohamed S. Eita, Vasily A. Melnikov, Omar F. Mohammed
CHEMICAL COMMUNICATIONS
(2015)
Article
Nanoscience & Nanotechnology
Mohamed Eita, Lars Wagberg, Mamoun Muhammed
ACS APPLIED MATERIALS & INTERFACES
(2012)
Article
Biochemistry & Molecular Biology
Emily D. Cranston, Mohamed Eita, Erik Johansson, Julia Netrval, Michaela Salajkova, Hans Arwin, Lars Wagberg
Article
Chemistry, Physical
Mohamed Eita, Hans Arwin, Hjalmar Granberg, Lars Wagberg
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2011)
Article
Chemistry, Physical
Mohamed Eita, Ramy El Sayed, Mamoun Muhammed
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2012)
Article
Chemistry, Physical
Mohamed Eita, Lars Wagberg, Mamoun Muhammed
JOURNAL OF PHYSICAL CHEMISTRY C
(2012)
Article
Chemistry, Physical
Shawkat M. B. Aly, Mohamed Eita, Jafar I. Khan, Erkki Alarousu, Omar F. Mohammed
JOURNAL OF PHYSICAL CHEMISTRY C
(2014)
Article
Chemistry, Multidisciplinary
Ramy El-Sayed, Mohamed Eita, Asa Barrefelt, Fei Ye, Himanshu Jain, Mona Fares, Arne Lundin, Mikael Crona, Khalid Abu-Salah, Mamoun Muhammed, Moustapha Hassan
Article
Materials Science, Paper & Wood
Hjalmar Granberg, Ludovic G. Coppel, Mohamed Eita, Eduardo A. de Mayolo, Hans Arwin, Lars Wagberg
NORDIC PULP & PAPER RESEARCH JOURNAL
(2012)
Article
Chemistry, Multidisciplinary
T. Burks, A. Uheida, M. Saleemi, M. Eita, M. S. Toprak, M. Muhammed
SEPARATION SCIENCE AND TECHNOLOGY
(2013)
Article
Chemistry, Multidisciplinary
Mohamed Eita, Anwar Usman, Ala'a O. El-Ballouli, Erkki Alarousu, Osman M. Bakr, Omar F. Mohammed
Article
Chemistry, Physical
Mohamed Eita
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.