Article
Chemistry, Multidisciplinary
Gabriele Deplano, Andrea Martini, Matteo Signorile, Elisa Borfecchia, Valentina Crocella, Stian Svelle, Silvia Bordiga
Summary: In this study, a series of gas-phase reactants were used to investigate the formation of Cu pairs in a Cu-exchanged mordenite zeolite under different reaction environments. The rearrangement of Cu ions to form multimeric sites was studied using X-ray absorption spectroscopy and advanced analysis through wavelet transform. The results showed that under an oxidative environment, Cu-I/Cu-II speciation correlated with Cu proximity, with metal ion pairs quantitatively forming.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Biochemistry & Molecular Biology
Hsin-Liang Huang, Yu Jhe Wei
Summary: This study demonstrates that an ionic liquid (IL-I) containing iodine/iodide can efficiently extract copper from scrap Cu/ITO thin film. The X-ray and absorption spectroscopy techniques are employed to identify the pathways of copper extraction and to determine the factors influencing the growth of nanoparticles in the IL-I.
Article
Nanoscience & Nanotechnology
Lars Ostervold, Adam Smerigan, Matthew J. Liu, Leah R. Filardi, Fernando D. Vila, Jorge E. Perez-Aguilar, Jiyun Hong, William A. Tarpeh, Adam S. Hoffman, Lauren F. Greenlee, Ezra Lee Clark, Michael J. Janik, Simon R. Bare
Summary: This study shows that electrolyte cations can have a direct impact on the performance of oxide electrocatalysts by incorporating into their lattice. By investigating the transformation of copper electrodes in alkaline electrolytes, it is found that in Ba(OH)2 electrolytes, ordered BaCuO2 phase is formed and further oxidized to a Cu3+-like Ba- x Cu- y O (z) phase. Moreover, Cu-O bonds and Cu-Ba scattering persist even during reduction. This is the first evidence of direct oxidative incorporation of an electrolyte cation into the bulk lattice to form a mixed oxide electrode. The results suggest a new route for the in situ formation of active and selective oxidation electrocatalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Innes Deans, Douglas Stewart, Jenny Jones, Jason Kam, Bhoopesh Mishra
Summary: The study assessed the uptake and distribution of zinc (Zn) and lead (Pb) in a seed-based Miscanthus hybrid grown in contaminated soil. The uptake of Zn and Pb increased in proportion to the soil concentrations by juvenile plants in a pot-trial. The accumulation of Zn and Pb differed between leaf and stem structures, and also between mature biomass and juvenile plants. X-Ray Absorption Fine Structures (XAFS) analysis revealed different Zn speciation in stems and leaves, as well as changes in Zn speciation with plant maturity. The dominant Zn species in juvenile plant leaves were sulfur ligands consistent with the presence of cysteine rich metallothioneins (MT) and phytochelatin (PC) complexes, along with octahedral O/N species typified by Zn-malate. Sulfur ligands were also prevalent in stems from juvenile plants, but the predominant O/N speciation shifted towards tetrahedral coordination. In contrast, tetrahedral Zn coordination with O/N species predominated in the mature biomass crop. The XAFS spectra for the mature biomass indicated that Zn was retained within cell walls as pectin and/or phosphate complexes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
G. C. Pandey, D. Gangwar, H. Tripathi, G. Aquilanti, Chandana Rath
Summary: The crystal and local structures of NiCr2-xFexO4 spinels synthesized by a co-precipitation method were examined using XRD, XANES, and EXAFS techniques. With increasing x, the occupancy of Ni cations in the A site decreased, leading to an increase in the Curie temperature TC of the paramagnetic to long-range ferrimagnetic transition. The dominance of A-B exchange interaction over B-B exchange interaction, confirmed by changes in bond lengths and angles from structural analysis, contributes to the observed behaviors.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
E. C. Cervi, S. Clark, K. E. Boye, J. P. Gustafsson, S. Baken, G. A. Burton
Summary: The addition of organic matter triggered a shift from suboxic to anoxic conditions in freshwater sediments, leading to a change in copper speciation as well. Organic matter complexed with copper to form complex structures, affecting the toxicity of copper in the sediments.
Article
Engineering, Environmental
Dina G. Nevidomskaya, Tatiana M. Minkina, Alexander Soldatov, Tatiana Bauer, Victoria A. Shuvaeva, Yan Zubavichus, Alexander L. Trigub, Saglara S. Mandzhieva, Pavel Dorovatovskii, Yuri Popov
Summary: The study revealed that in highly contaminated soils, Zn and Cu primarily exist in the form of Me-S and Me-O bonds. As the extraction stages progress, the number of compounds with higher solubility decreases, indicating that the residual fractions may contain some of the most stable and hard-to-recover metal compounds originating from technogenic activities.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Chemistry, Multidisciplinary
R. Patil, N. Kumar, S. Bhattacharjee, B. M. Matsagar, P. -C. Han, K. C. W. Wu, R. R. Salunkhe, A. Bhaumik, S. Dutta
Summary: In this study, a novel strategy for accessing CZIF-70 0 with metallic nickel sites encapsulated by multiwalled nanotube shells was presented. The electrochemical performance and chemical fixation capability of CO2 of this material was found to be superior. The coexistence of nickel and cobalt in CZIF-70 0 improves the electronic transportation capability and enhances the capacitance and CO2 reduction.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Engineering, Environmental
Edward D. Burton, Dane T. Lamb, Jessica Hamilton, Graeme Miller, Scott G. Johnston, Niloofar Karimian
Summary: This study investigates the use of modified bauxite refinery residue (MBRR) to reduce the mobility and bioaccessibility of lead (Pb) in contaminated soil. The results show that amendment with MBRR effectively decreased water-soluble and Toxicity Characteristic Leachate Procedure (TCLP) Pb concentrations in the soils. X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) analysis confirmed that Pb was retained through sorption and formation of hydrocerussite. Furthermore, the amendment had little effect on gastric-phase Pb bioaccessibility but significantly decreased relative intestinal-phase Pb bioaccessibility due to increased Pb sorption by MBRR's minerals.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Nicole A. DiBlasi, Agost G. Tasi, Xavier Gaona, David Fellhauer, Kathy Dardenne, Joerg Rothe, Donald T. Reed, Amy E. Hixon, Marcus Altmaier
Summary: The impact of calcium on the Pu(IV)-EDTA system was investigated, revealing the formation of a quaternary complex CaPu(OH)4(EDTA)2- in the presence of calcium, significantly enhancing plutonium solubility.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Shuting Zhuang, Jianlong Wang
Summary: This study investigates the adsorption mechanism of cobalt ions on synthesized graphene oxide (GO) using advanced techniques such as X-ray absorption spectra (XAFS). The results show that the synthesized GO has a high surface area and abundant oxygen-containing functional groups, which allows it to effectively adsorb Co2+ ions. The adsorption process follows a pseudo-second-order kinetic model and the Langmuir model, and it is chemisorption and endothermic in nature. Oxygen-containing functional groups play a vital role in the adsorption process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Mauro Antonio Andriotti Jr, Maria Ines Basso Bernardi, Alexandre Mesquita
Summary: Phosphor materials with narrow emission bands and high quantum efficiency, such as SrTiO3:Pr,Al, have attracted attention for optoelectronic device applications. In this study, mesocrystal samples of Sr0.998Pr0.002Ti1-yAlyO3 were prepared and characterized using various techniques. Results showed that the hydrothermal method and Al incorporation caused structural changes and emission intensity variations, which were attributed to symmetry breaking, Ti off-center displacement, octahedral tilting, and oxygen vacancies. The study also revealed the generation of broad emission and the influence of intrinsic defects on the optical properties of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Alain Manceau, Anne-Claire Gaillot, Pieter Glatzel, Yves Cherel, Paco Bustamante
Summary: The study confirms that mercury toxicity may be underestimated when the molar ratio of selenium to mercury is relatively high, as mercury binds extensively to selenoproteins, reducing the storage of bioavailable selenium for detoxifying MeHg. Additionally, the research shows that Hg(Sec)4 could severely deplete the bioavailable selenium in muscle tissue, potentially causing harm from mercury toxicity in terrestrial animals.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Hiroyuki Asakura, Saburo Hosokawa, Kentaro Teramura, Tsunehiro Tanaka
Summary: The study investigated the relationship between the local structures of middle lanthanoid elements in complex oxides and the characteristic features of XANES spectra. It was found that there was a significant correlation between certain physical indexes and the pre-edge peak areas of Ln L-1-edge or the full width at half maximum of white line in Ln L-3-edge XANES spectra. Theoretical simulations revealed the origin of pre-edge peaks in Ln L-1-edge XANES spectra, providing a universal method to estimate the local structure of middle lanthanoid elements.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Akihiro Uehara, Daisuke Akiyama, Atsushi Ikeda-Ohno, Chiya Numako, Yasuko Terada, Kiyofumi Nitta, Toshiaki Ina, Shino Takeda-Homma, Akira Kirishima, Nobuaki Sato
Summary: This study characterizes the fuel debris at Fukushima Daiichi Nuclear Power Station and investigates the reaction mechanisms and composition of reaction products for mixed UO2-ZrO2 compounds under different atmospheres. The findings provide insights into the interaction between nuclear fuels and cladding materials, which can facilitate the simulation of decontamination procedures.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Angela Lis, Viorica Gladchi, Gheorghe Duca, Sergey Travin
Summary: This work presents studies on the photochemical transformations of TU and Cys with the addition of Cu(II) or Fe(III) ions. The results show that the oxidation rate of the thiols increases significantly when Cu(II) or Fe(III) ions are added to the system. It has also been found that TU and Cys can form stable complex compounds with the studied metal ions. The oxidation rates of the thiols are found to depend on the radiation intensity and emission spectrum of the irradiation sources.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Cristiane F. A. Teixeira, Estefane I. Teixeira, J. P. C. Nascimento, M. Amilcar Junior, L. M. C. Pinto, Anderson R. L. Caires, G. B. Alcantara, Ana C. Micheletti, Victor M. Deflon, Davi F. Back, Heveline Silva, Lucas Pizzuti, Gleison Antonio Casagrande
Summary: Novel binuclear heteroleptic copper(I) complexes based on mixed DPPE/thiocarbamoyl-pyrazoline ligands were synthesized and structurally characterized. These complexes exhibited similar structural behavior around the Copper(I) atoms and showed promising antimicrobial and anticancer activities.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Chen Chen, Li Liu, Xin-Xin Zhong, Fa-Bao Li, Hai-Mei Qin
Summary: Thermally activated delayed fluorescent (TADF) Cu(I) halide complexes with short lifetimes and intense emissions were synthesized and characterized. These complexes exhibit intense green to yellow-green delayed fluorescence and are suitable for OLED devices.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Tian-Yu Zhang, Xue-Qian Wu, Heng-Yu Ruan, Yi Yuan, Le Wang, Ya-Pan Wu, Qing-Wen Han, Ruan Chi, Dong-Sheng Li
Summary: In this study, a novel Ni(II)-based metal-organic framework with good electrocatalytic oxidation performance was successfully synthesized, showing potential for direct alcohol fuel cells.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Susanta Das Baishnab, R. N. Dutta Purkayastha, Waldemar Maniukiewicz, Rosa M. Gomila, Antonio Frontera
Summary: The synthesis, structure, and DNA binding ability of three decavanadate complexes containing cationic organic moieties were reported. The complexes were characterized by various techniques and their solid-state structures were analyzed. The complexes showed interesting assembly patterns and exhibited moderately strong intercalative binding with CTDNA. Additionally, their micellization behavior in the presence of the surfactant CTAB was studied.
INORGANICA CHIMICA ACTA
(2024)
Review
Chemistry, Inorganic & Nuclear
Jubaraj B. Baruah
Summary: Isomorphous series are generated by replacing atoms or molecules to form materials with similar compositions. They allow modulation of structure and properties, and generate equivalent compositions with novel material properties. The study of stereo-electronic aspects of different equivalent compositions can improve the utility of the original composition.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Kamelah S. Al-Rashdi, Bandar A. Babgi, Ehab M. M. Ali, Bambar Davaasuren, Abdul-Hamid M. Emwas, Mariusz Jaremko, Mark G. Humphrey, Mostafa A. Hussien
Summary: Tridentate ligands were used to synthesize a set of palladium complexes, which were characterized and found to have DNA and BSA binding abilities. The complexes also showed differences in anticancer activities.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Diane Isaacs, Chandler Cox, Mark A. Bezpalko, W. Scott Kassel, William G. Dougherty
Summary: The structure and electrochemical properties of zinc(II) complexes with a face-capping ligand have been investigated, revealing the effect of the ligand on bound semiquinonate (SQ) radicals. The substitution pattern of the SQ ring plays a crucial role in determining the fate of the bound SQ radicals. Additionally, the protective pocket formed by the ligand's phenyl substituents is unable to prevent decomposition of SQ radicals with minimal steric bulk, suggesting that substitution of the SQ ring is the main contributor to their stabilization.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Xingliang Chen, Zhiqiang Jiang
Summary: Here, a series of zinc tetrahedral tetrazolate frameworks (Zn-TTFs) are presented, and it is demonstrated that rotation of carboxyl group can generate structural diversity. Compound 3 exhibits a unique zeolite-like structure, while compound 4 shows both super acid and alkali resistance.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Ankita Puri, Allison Mcaninch, Sheng Shu, Khashayar Rajabimoghadam, Maxime A. Siegler, Marcel Swart, Isaac Garcia-Bosch
Summary: In this article, the synthesis and characterization of copper, nickel, and palladium complexes bound by bidentate ligands derived from ortho-phenylenediamine are described. The complexes contain tunable H-bond donors and their crystal structures reveal intramolecular H-bonding interactions between the ligand scaffolds. Variations in the coordination sphere led to the isolation of the complexes in square-planar or twisted pseudo-tetrahedral geometries. Structural analysis showed that intramolecular H-bonding interactions can be altered by disrupting the bonds between countercations, solvent of crystallization, and ligand scaffold, resulting in changes in the geometry of the complexes. DFT calculations confirmed that Cu complexes prefer twisted geometries while Ni and Pd complexes favor square-planar geometries.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Laiane dos Santos Oliveira, Pedro Henrique de Souza Guarda, Leticia Bazilio Rosa, Gustavo Clauss Rodrigues, Daniele Daiane Affonso, Joao Ernesto de Carvalho, Igor Andrade Santos, Mark Harris, Douglas Hideki Nakahata, Jose Ricardo Sabino, Danilo Ciccone Miguel, Ana Lucia Tasca Gois Ruiz, Ana Carolina Gomes Jardim, Camilla Abbehausen
Summary: Chalcones are chemical precursors of flavonoids that have various biological properties. In this study, novel copper(II)-2'-hydroxy-4-benzyloxychalcone complexes were synthesized and evaluated for their antileishmanial, antiproliferative, and antiviral activities. The results demonstrated that these complexes showed potential effects against tumor cells, leishmania parasites, and SARS-CoV-2 virus. The study also highlighted the influence of ligand structure on biological activity.
INORGANICA CHIMICA ACTA
(2024)
Review
Chemistry, Inorganic & Nuclear
Archana Thakur, Harpreet Kaur, Vishal Tyagi
Summary: This review article discusses the findings of research on the 13C NMR spectra of di- and tri-butyltin carboxylates, highlighting the importance of 13C NMR chemical shifts in determining the chemical surroundings of carbon nuclei and their role in structure elucidation.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Qiang Zhao, Qi-Yang Li, Zhi Shen, Guo Zang, Wen-Jun Lv
Summary: In this study, five metal complexes were synthesized using a solvothermal reaction and their structures were analyzed by single crystal X-ray diffraction. Fluorescence and magnetic properties of some complexes were also investigated.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Jeremy Erb, Darcy Setter, Jake Swavey, Frederick Willits, Shawn Swavey
Summary: Three BODIPY-Ru(II) complexes were synthesized by coordinating [Ru(bpy)2Cl]+ complexes to BODIPY ligands. The spectroscopic and electrochemical properties of the complexes were characterized. The complexes exhibited intense absorption peaks due to the pi pi* transitions localized on the BODIPY core, and additional charge transfer transitions associated with the metal center. The complexes showed significant singlet oxygen generation and were able to induce photo-nicking of DNA.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Sahin Reja, Dilip Sarkar, Kaushik Sarkar, Deboshmita Mukherjee, T. K. S. Fayaz, Palash Sanphui, Rajesh Kumar Das
Summary: A promising bioinspired metallocatalyst has been produced and characterized, showing high catalytic activity in oxygen dependant enzymatic radical pathway. The catalyst also exhibits inter and intra molecular H-bonding and C-H-pi interactions.
INORGANICA CHIMICA ACTA
(2024)