Article
Chemistry, Multidisciplinary
Yiteng Zheng, Yue Qi, Ziyu Tang, Junzhi Tan, Bruce E. Koel, Simon G. Podkolzin
Summary: The O-H stretching vibration of surface hydroxyls can serve as an indicator of the roughness of the gold surface and associated functional properties, such as catalytic activity.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jiayu Li, Jinxia Li, Xianglin Liu, Jiacheng Chen, Pengfei Tian, Sheng Dai, Minghui Zhu, Yi-Fan Han
Summary: The study revealed that the active sites of Bi, Sn, and In catalysts are Bi-0, SnO, and In2O3, with their affinities to hydroxyls in the order of Bi-0 < SnO < In2O3. Formate production involves two parallel pathways, one involving hydroxyls and the other not. The participation of hydroxyl groups in CO2RR follows the order of Bi < Sn < In.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Editorial Material
Multidisciplinary Sciences
Eddy Dib, Edwin B. Clatworthy, Hugo Cruchade, Izabel C. Medeiros-Costa, Nikolai Nesterenko, Jean-Pierre Gilson, Svetlana Mintova
Summary: The precise location and role of hydroxyls in zeolites are still unknown, but controlling them can lead to tailored catalysts and adsorbents with novel properties, thus increasing efficiency in industrial processes for cleaner energy.
NATIONAL SCIENCE REVIEW
(2022)
Article
Multidisciplinary Sciences
Margareta Wagner, Bernd Meyer, Martin Setvin, Michael Schmid, Ulrike Diebold
Summary: The state of deprotonation/protonation of surfaces has significant implications in chemistry, affecting acid-base catalysis, water splitting, mineral behavior, and biochemistry. This study explores the acidity of individual hydroxyl groups on In2O3(111) surfaces, finding quantitative agreement between experimental measurements and theoretical calculations. The findings extend to other oxides like titanium dioxide and zirconium oxide, showcasing the ability to determine acidity with atomic precision using non-contact atomic force microscopy measurements.
Article
Chemistry, Physical
Ruohang Xu, Dehang Zhu, Kunrong Du, Dandan Cui, Haifeng Feng, Weichang Hao, Dongliang Tian, Yi Du
Summary: This study systematically investigated the relationship between the wettability of TiO2 catalysts and their performance in PEC water splitting. The results showed that tuning the surface wettability can significantly improve the water splitting efficiency of PEC catalysts, which is important for designing and synthesizing highly active catalysts.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Applied
Feng Sha, Shan Tang, Chizhou Tang, Zhendong Feng, Jijie Wang, Can Li
Summary: ZnZrOx solid solution catalyst prepared by reflux ammonia (ZnZrOx-RA) shows higher methanol selectivity and CO2 conversion compared to the catalyst obtained via co-precipitation (ZnZrOx-CP). Kinetic analysis reveals that ZnZrOx-RA has decreased activation energy for methanol synthesis, increased reaction order in H2, and similar reaction order in CO2. Structural characterizations indicate that both catalysts are in solid solution state, but ZnZrOx-RA possesses more surface Zn-OH species, which enhance the activation and adsorption of CO2 and H2, and improve the generation and stability of HCOO* species, promoting CO2 hydrogenation to methanol.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Energy & Fuels
Pattamas Rattanaudom, Bor-Jier Shiau, Ampira Charoensaeng, Uthaiporn Suriyapraphadilok
Summary: The addition of silica nanoparticles (SNPs) significantly improved foam stability, reduced surfactant adsorption, altered wettability, and increased displacement efficiency in surfactant foam flooding experiments. Gas chromatography-time-of-flight-mass spectrometry analysis was used to characterize the incremental change in crude oil compositions with the SNP-surfactant-stabilized foam system. By combining the effects of SNP-surfactant on improving foam stability, surface alteration, and minimizing surfactant loss, the study demonstrated efficient displacement of waxy crude oil components in reservoirs.
Article
Chemistry, Physical
Runze Ma, Christopher R. O'Connor, Gregory Collinge, Sarah I. Allec, Mal-Soon Lee, Zdenek Dohnalek
Summary: The dynamics of acetic acid on anatase TiO2(101) were investigated using scanning tunneling microscopy experiments and density functional theory calculations. The study showed the simultaneous diffusion of bidentate acetate and a bridging hydroxyl, as well as the transient formation of molecular monodentate acetic acid. The diffusion rate was found to be strongly dependent on the position of hydroxyl and adjacent acetate(s). A three-step diffusion process involving acetate and hydroxyl recombination, acetic acid rotation, and acetic acid dissociation was proposed. This study provides insights into the importance of bidentate acetate dynamics in the formation of monodentate species, which drive selective ketonization.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
R. Saidi, K. Raeissi, F. Ashrafizadeh, M. Kharaziha
Summary: The study aimed to improve the corrosion resistance of Ti6Al4V using electrodeposited zinc oxide coatings. By controlling the process parameters, zinc oxide coatings with various morphologies were created, with spherical morphology providing higher corrosion performance at the initial stage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Seyedbehzad Hosseinzadehsadati, Ali Akbar Eftekhari, Hamidreza M. Nick
Summary: Modified salinity water flooding can enhance oil mobility and recovery. Ignoring the impact of saturation history on relative permeability leads to inaccurate prediction of oil recovery. By proposing three models, we demonstrate the interplay of wettability alteration, hysteresis effect, and fluid flow in porous media. Our simulations indicate that considering hysteresis alongside wettability alteration can better quantify the retention of mobilized oil. Additionally, measuring secondary drainage and imbibition saturation curves is crucial for field scale simulation of modified salinity water flooding.
Article
Chemistry, Multidisciplinary
Liu Shi, Beibei Nie, Lingjun Sha, Keqin Ying, Jinlong Li, Genxi Li
Summary: Regulating ion transport in nanochannels is crucial for biomolecular detection and cellular communication. This study introduces graphene oxide (GO) and peptides to achieve precise control over ion conduction, offering promising applications in nanofluidic manipulation and biomedical research.
Review
Biochemistry & Molecular Biology
Cristina Pavan, Rosangela Santalucia, Guillermo Escolano-Casado, Piero Ugliengo, Lorenzo Mino, Francesco Turci
Summary: The study focuses on the role of hydroxyls (OH) on oxide particles (OxPs) in molecular initiating events leading to OxPs toxicity. The analytical methods used to characterize surface OH, including thermogravimetry, titration, zeta potential measurements, and spectroscopic approaches (NMR, XPS), are discussed. The importance of modelling techniques (MD, DFT) for describing the interactions between membranes/proteins and OxPs surfaces is also highlighted. A new approach methodology (NAM) based on IR spectroscopy and bioanalytical assays is proposed for investigating the molecular interactions of OxPs with biomolecules and membranes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Ashok Jangam, Plaifa Hongmanorom, Ming Hui Wai, Antonius Jeffry Poerjoto, Shibo Xi, Armando Borgna, Sibudjing Kawi
Summary: In this study, Cu-phyllosilicate (Cu-SiO2P) catalysts were prepared using a urea-assisted hydrothermal synthesis method, and the role of surface hydroxyl species in controlling methanol selectivity for a CO2 hydrogenation reaction was investigated. The catalyst reduced at 225 degrees Celsius showed superior catalytic performance, possibly due to the presence of surface enriched with Cu+ species and generated hydroxyls.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Farid Orudzhev, Arsen Muslimov, Daud Selimov, Rashid R. Gulakhmedov, Alexander Lavrikov, Vladimir Kanevsky, Rashid Gasimov, Valeriya Krasnova, Dinara Sobola
Summary: This paper reports on the high photocatalytic activity of ZnO tetrapods (ZnO-Ts) under visible/solar light and hydrodynamic water flow. It was demonstrated that surface oxygen defects play a crucial role in the photocatalytic activity of ZnO-Ts. The ability to control the surface wettability and surface defect concentration of ZnO-Ts was also shown. Additionally, the similar photocatalytic activity of ZnO-Ts under direct and simulated sunlight offers great potential for solar photocatalysis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Yuhao Dou, Qingshun Bai, Kai Yang, Wanmin Guo, Hongfei Wang, Shandeng Chen
Summary: In this article, molecular dynamic simulation was employed to investigate the wetting process of graphene oxide coated alumina substrate. The influence of hydroxyl and epoxy groups on the wetting process of water molecules was explored by varying their density on the surface of graphene oxide. The increase of hydroxyl density was found to enhance the substrate's wettability and the formation of hydrogen bonds, while the increase of epoxy density led to changes in hydrogen bond behavior and quantity. Temperature was also shown to play a crucial role in the formation and lifetime of the hydrogen bond. The findings provide a theoretical foundation for the application of graphene oxide wetted coatings on aluminum alloy surfaces.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
