Article
Multidisciplinary Sciences
Kangchun Lee, Seho Sun, Ganggyu Lee, Gyeonghui Yoon, Donghyeok Kim, Junha Hwang, Hojin Jeong, Taeseup Song, Ungyu Paik
Summary: The report explores the galvanic corrosion inhibition between Cu and Ru metal films using pyridinecarboxylic acid groups, forming different adsorption layers based on the electron density of their metal oxides. The differences in d-orbital electron densities lead to varied affinities between the metal oxides and pyridine groups, controlling the corrosion behavior between the two metals during chemical mechanical planarization processing.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Yogesh Kumar, S. Tripathi, Mangla Nand, R. Jangir, V. Srihari, A. Das, R. Singh, U. Deshpande, S. N. Jha, A. Arya
Summary: This study investigated the effect of Nd doping on the structural, optical, and electronic properties of lanthanum monazite structure. Pure and Nd-doped LaPO4 powders were prepared and analyzed for their composition, oxidation states, crystal structure, and bandgaps. The results confirmed the successful substitution of Nd in the LaPO4 matrix and provided insights into the local structure using extended X-ray absorption fine structure analysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Mauricio Lopez Luna, Janis Timoshenko, David Kordus, Clara Rettenmaier, See Wee Chee, Adam S. Hoffman, Simon R. Bare, Shamil Shaikhutdinov, Beatriz Roldan Cuenya
Summary: The study investigates the structural and chemical evolution of oxide-supported iron nanoparticles during the activation stages and the CO2 hydrogenation reaction, revealing the preferential formation of iron surface oxides under reaction conditions. The results highlight the important role played by the oxide support in the final structure and composition of nanosized catalysts.
Article
Nanoscience & Nanotechnology
Deok-Yong Cho, Ki-jeong Kim, Kug-Seung Lee, Michael Lubben, Shaochuan Chen, Ilia Valov
Summary: Thin layers inserted between a metal electrode and a solid electrolyte can modify the transport of mass and charge at interfaces and affect electrode reactions. Incorporating C films in functional materials can alter the host's chemical properties and device functionalities. Using X-ray spectroscopies, it was found that inserting graphene or ultrathin amorphous C layers in a Ta2O5/Ta system can tune its chemical and electronic structures, thereby fundamentally changing the resistive switching functionalities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Aida Raauf, David Graf, Yakup Gonullu, Praveen K. Sekhar, Michael Frank, Sanjay Mathur
Summary: The nanostructured thin film of Nd2Sn2O7 pyrochlore obtained through solution processing shows unprecedented selectivity towards hydrogen sensing, with the highest sensitivity towards H-2 detected at 300 degrees Celsius. The high efficiency and reproducibility of the investigated sensor devices indicate the potential of Nd2Sn2O7 based sensors for hydrogen safety applications.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Electrochemistry
Dzevad K. Kozlica, Ingrid Milosev
Summary: The optimal surface pre-treatment conditions for improved adsorption of 2-mercaptobenzimidazole (MBI) and octylphosphonic acid (OPA) on copper and aluminium substrates were investigated. It was found that the method of film formation played a crucial role in the effectiveness of the inhibitors on copper and aluminium.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Ritesh Verma, Ankush Chauhan, Khalid Mujasam Batoo, Muhammad Hadi, Emad H. Raslan, Rajesh Kumar, Muhammad Farzik Ijaz, Abdulaziz K. Assaifan
Summary: The synthesis of vanadium-doped BCZT ceramic oxides was reported in this paper, confirming the existence of a solubility limit of V in BCZT ceramics. Analysis revealed the influence of crystal structure and formation of oxygen vacancies on the luminescence and electrical properties of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Khalid Mujasam Batoo, Ritesh Verma, Ankush Chauhan, Rajesh Kumar, Muhammad Hadi, Omar M. Aldossary, Y. Al-Douri
Summary: This study reported the synthesis of Gd and Nb co-doped BT ceramic oxides and investigated their structural and electrical properties. Various analysis techniques were used to characterize the samples, revealing the influence of Gd and Nb doping on the electrical properties of the ceramic materials, which were found to improve with increasing dopant concentration.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Ziyi Chen, Andrew G. Walsh, Xiao Wei, Manzhou Zhu, Peng Zhang
Summary: This study investigates the electronic properties of Ag-25(SR)(18) and Au-25(SR)(18) and develops a unique method to analyze the charge transfer behavior of nanoclusters. Experimental X-ray spectroscopy is used to demonstrate the bonding properties of silver nanoclusters, with the staple motif shown to have a significant impact on their electronic properties. The effective X-ray analysis techniques developed here provide new opportunities for the site-specific study of other nanoclusters.
Review
Chemistry, Physical
Benjamin Rotonnelli, Marie-Sophie Dias Fernandes, Fabrice Bournel, Jean-Jacques Gallet, Benedikt Lassalle-Kaiser
Summary: Water electrolysis for hydrogen production provides a convenient and carbon-free option to regulate the intermittency of renewable energy sources. Efficient catalysts based on noble metals are currently used for large-scale production, but efforts are being made to reduce catalyst usage while maintaining their efficiency. Fundamental studies on catalyst structure, reaction intermediates, and failure modes support these efforts. Synchrotron-based techniques, such as X-ray photoelectron and X-ray absorption spectroscopies, can provide valuable information during the reaction. This article gives an overview of these techniques and their application to water electrolysis.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Cesar D. D. Mendoza, F. L. Freire Jr
Summary: We investigated the interfacial electronic structure of single-layer graphene on a germanium substrate using UPS and XPS. The graphene was directly synthesized on (110) undoped Ge substrate via CVD. The study identified the main graphitic properties and showed that the Ge substrate affected the electronic structure of the graphene due to electronic coupling. The study also provided important information on the Schottky contact's nature and energy level alignments for potential integration of single-layer graphene on a Ge substrate with CMOS technology.
Article
Physics, Applied
Juan-Jesus Velasco-Velez, Lorenz J. Falling, Denis Bernsmeier, Michael J. Sear, Pip C. J. Clark, Ting-Shan Chan, Eugen Stotz, Michael Haevecker, Ralph Kraehnert, Axel Knop-Gericke, Cheng-Hao Chuang, David E. Starr, Marco Favaro, Rik Mom
Summary: In situ x-ray spectroscopies are a powerful tool for studying the electronic structure of the electrode-electrolyte interface, but the design of spectro-electrochemical cells plays a crucial role in determining the measurements and processes that can be studied. It is important to choose the right cell design for the specific process of interest, and understanding the opportunities and limitations of different cell designs through case studies is essential for practical experiments.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Shuhang Liu, Jun Han, Rongli Cui, Xin Yang, Yunfan Fei, Xingyu Tang, Yida Wang, Yajie Wang, Yongjin Chen, Jiajia Feng, Haiyan Zheng, Kuo Li, Xiaoyang Liu
Summary: In this work, Gd-doped diamond was synthesized from an endohedral metallofullerene (EMF) under high pressure and high temperature conditions. The experiments showed that Gd was uniformly distributed in the diamond lattice, exhibiting dilute paramagnetic properties, and the lattice parameters of diamond were enlarged. This study provides insights into the synthesis of other metal-doped diamond materials.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Environmental Sciences
Yueh-Feng Li, Ching-Yao Hu, Yu-Chi Lee, Shang-Lien Lo
Summary: This study found that adding ZnCl2 can increase the efficiency of EC for PFOA, and the longer the carbon chain of PFA, the better the removal by EC. Chemical bonding between aluminum and fluoride was observed. The main functions of ZnCl2 were to prevent the rise in pH and improve flotation.
Article
Chemistry, Physical
Anthony Boucly, Luca Artiglia, Maneka Roger, Maxim Zabilskiy, Arik Beck, Davide Ferri, Jeroen A. van Bokhoven
Summary: This study investigates the inhibition effect of water on methane oxidation on Pd/Al2O3 catalysts. The results demonstrate that water competes with methane for catalytically active sites, leading to a decrease in the redox activity of palladium. Additionally, water poisons the palladium surface and hinders the formation of active palladium sites.
APPLIED SURFACE SCIENCE
(2022)