Article
Chemistry, Multidisciplinary
Hannah McTague, Ake C. Rasmuson
Summary: The nucleation process of p-hydroxybenzoic acid:glutaric acid 1:1 cocrystal has been studied in stoichiometric and non-stoichiometric acetonitrile solutions. The cocrystal was found to be the nucleating phase, even in solutions that were supersaturated with respect to the pure solid phases. The nucleation of the cocrystal was more difficult than the pure compounds, but it was similar to the pure compound when the driving force was defined per reactant molecule.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Eliska Skorepova, Milos Vaclavik, Jan Jirat, Morgane Poupon, Ludeek Ridvan, Martin Babor, Miroslav Soos
Summary: The aim of this study was to investigate the solid forms of obeticholic acid and characterize their structures. Two possible solvated forms were discovered using X-ray powder diffraction, and further analysis showed that each solvate contains its respective solvent. The two series of solvates are isostructural, and single-crystal X-ray diffraction revealed that both forms are channel solvates.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Engineering, Environmental
Hongbiao Wen, Zezhen Pan, Xingxing Wang, Kejian Li, Qihuang Wang, Jinming Luo, Hongbo Fu, Liwu Zhang, Zimeng Wang
Summary: Despite extensive research on semiconductor photocatalysis, the fundamental aquatic chemistry of these new materials and their environmental implications are poorly understood. In this study, the solubility of BiVO4 and its non-stoichiometric dissolution in different pH ranges were investigated. The solubility and stability of BiVO4 were found to be pH-dependent, with the lowest solubility and highest stability near pH 5. Illumination significantly enhanced the dissolution of BiVO4. Adsorption of dissolved bismuth by BiVO4 solids was identified as the main reason for the non-stoichiometric dissolution. These findings highlight the importance of considering the dissolution of photocatalysts and provide a method to evaluate the environmental stability and risks of other semiconductor materials.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Wei Wei, Junsuo Li, Xuan Han, Yijun Yao, Wei Zhao, Ruiming Han, Shiyin Li, Yong Zhang, Chunmiao Zheng
Summary: This study investigated the adsorption of TA using green synthesized, eggshell-derived nHAP and its implications for removing aqueous Cu(II). The adsorption of TA by nHAP was found to be a complex pH-dependent process, with multiple adsorption modes contributing to the removal of Cu(II) from water. Further research is needed to evaluate the environmental behavior of heavy metals in the presence of TA.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Polymer Science
Jun Gao, Qiang-wei Zhan, Ziyao Tang, Yan Huang
Summary: This study demonstrates the transition from soluble to colloidal polyelectrolyte complex and the formation of large colloidal complexes through aggregation of small primary complexes. The sol-col transition occurs at a critical charge ratio and is affected by chain entanglement and the addition of salts.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Pharmacology & Pharmacy
Tatyana V. Volkova, Olga R. Simonova, German L. Perlovich
Summary: The study evaluated the poor solubility of new antifungal drug S-119 and the effectiveness of various excipients in improving its solubility. Pluronic F-127 and 6-O-Maltosyl-beta-CD were identified as the most effective solubilizing agents for S-119, with PVP showing the greatest increase in solubility in pH 7.4 solutions.
Article
Chemistry, Physical
Yann Morizet, Nicolas Trcera, Tomo Suzuki-Muresan, Sami Soudani, Emiliano Fonda, Michael Paris
Summary: This study used X-ray absorption spectroscopy to determine the local atomic environment of iodine in different forms in aluminoborosilicate glasses. The results revealed that iodide ions (I-) were surrounded by Na+ or Ca2+, while iodate ions (I5+) were surrounded by three oxygen atoms. The I-O distance in iodate ions in glasses was comparable to the distance in crystalline compounds.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Biotechnology & Applied Microbiology
Zhou Hui, Xie Yi, Xuqian Wang, Yang Huan, Yabo Wang, Yongkui Zhang
Summary: Aluminum-doped hydroxyapatite (Al-HAP) was synthesized as an efficient adsorbent for uranium removal from aqueous solution, showing good adsorption performance and reusability, and having potential for practical application.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Engineering, Environmental
Changyong Lu, Wenjie Qian, Martine Mallet, Christian Ruby, Hans Chr Bruun Hansen
Summary: Three different LDHs were synthesized and studied for phosphate removal, showing fast and efficient sorption properties. The exchange of interlayer Cl- with CO32- significantly affected the dissolution of Mn. The phosphate sorption mechanism was mainly through the formation of mononuclear mono- and bidentate surface complexes on the LDH particles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Ravi Teja Mittireddi, Nishaben M. Patel, Abhay Raj Singh Gautam, Virupakshi Soppina, Emila Panda
Summary: This study developed a highly defective, non-stoichiometric and amorphous TiOx as an efficient anti-viral surface coating, which is more effective against baculovirus compared to anatase modification. The coating is highly transparent and environmentally friendly, synthesized using radio frequency magnetron sputtering, and has potential for commercialization due to cost-effectiveness.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Daniel Mutter, Roland Schierholz, Daniel F. Urban, Sabrina A. Heuer, Thorsten Ohlerth, Hans Kungl, Christian Elsaesser, Ruediger-A. Eichel
Summary: The defect chemistry of perovskite compounds is closely related to the stoichiometry and valence states of transition-metal ions, allowing for tuning catalytic properties through defect engineering. Combining theoretical calculations and experimental methods, this study investigates the feasibility of manipulating the valence state of iron and the concentration of point defects by synthesizing La-deficient LFO. The results suggest that significant compositional deviations from stoichiometric LFO are not expected by varying the conditions of oxidic precursor compounds in solid-state processing routes.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Javad Madadi Mogharrab, Shahab Ayatollahi, Mahmoud Reza Pishvaie
Summary: The study investigates the impact of anhydrite impurity on low salinity water injection performance in carbonate reservoirs using experimental data and a DDL-based SCM. It shows that traditional techniques like rock dissolution and zeta potential measurement are insufficient to explain the non-monotonic behavior of carbonate wettability. Additionally, a new quantitative parameter for evaluating the wettability state of carbonate surfaces is introduced by considering the adsorbed carboxylic acid components on calcite surfaces as reported by the SCM.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Ceramics
Yuan Qin, Xiao-Feng Wei, Ji-Xuan Liu, Yongcheng Liang, Guo-Jun Zhang
Summary: High-entropy carbide ceramics with 0-40 at.% nominal carbon vacancy were prepared by adding metal Hf into HEC as a case study. The samples exhibited high density, single-phase structure, and homogeneous distribution of metal elements. The lattice parameters increased gradually with the added Hf content.
ADVANCES IN APPLIED CERAMICS
(2023)
Article
Construction & Building Technology
Bouzouaid Lina, Lothenbach Barbara, Fernandez-Martinez Alejandro, Labbez Christophe
Summary: This study investigated the impact of gluconate, sorbitol, mannitol, and galactitol on calcium speciation at high pH values through solubility measurements and potentiometric titration. The results showed differences in the strength and type of complexes formed by these substances, providing insights into their influence on the hydration of alite and Portland cement.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Materials Science, Biomaterials
Lei Yu, Yuanchen Yin, Zhaoyang Guo, Yifan Fei, Xutao Wen, Jiajia Wang, Haishui Sun, Jingzhou Hu, Shanliang Jin
Summary: In this experiment, zinc was introduced into the titanium coating to improve its pro-angiogenic ability. The physical properties, biocompatibility, pro-angiogenic function, and osteogenic effect of the zinc-containing coating were investigated. The study confirmed the pro-angiogenic effect of zinc ions and also found a mutual promotion between angiogenesis and osteogenesis in the zinc ion microenvironment.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Microbiology
Firoz Shah, Markus Gressler, Susan Nehzati, Michiel Op De Beeck, Luigi Gentile, Dirk Hoffmeister, Per Persson, Anders Tunlid
Summary: The ectomycorrhizal fungus Paxillus involutus decomposes proteins through a two-step mechanism involving oxidation and proteolysis. During this process, extracellular iron was found to mainly exist as solid iron(III) phosphates and oxides, which were reductively dissolved within 1 to 2 days, forming iron(II) complexes that remained in the medium. Additionally, the fungus secretes iron(III)-reducing metabolites, with the unique compound involutin identified as the main iron(III)-reductant.
Article
Soil Science
Milda Pucetaite, Pelle Ohlsson, Per Persson, Edith Hammer
Summary: By utilizing advanced microspectroscopy techniques in microfluidic soil chips, it is possible to monitor the growth and interactions of soil microbes at the (sub)micrometer scale, leading to potential breakthroughs in soil science research areas.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Microbiology
Tao Wang, Per Persson, Anders Tunlid
Summary: The study found that ectomycorrhizal fungi can access nitrogen from mineral-associated proteins, a mechanism that is shared among multiple fungal lineages and exploration types.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Review
Soil Science
Michiel Op De Beeck, Per Persson, Anders Tunlid
Summary: Filamentous fungi play a crucial role in the decomposition of lignocellulose in soil organic matter. The association between extracellular enzymes and EPS matrices in fungi affects the efficiency of decomposition reactions. Fungal EPS matrices are dynamic and functional components that ensure extracellular decomposition reactions proceed at the right time and place.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Environmental Sciences
Martin Skerlep, Susan Nehzati, Ulf Johansson, Dan B. Kleja, Per Persson, Emma S. Kritzberg
Summary: The study showed that there were significantly higher concentrations of iron in shallow soils under older Norway spruce stands, and this was related to variations in the concentration of dissolved organic carbon (DOC) and pH. Additionally, the iron in all soil solutions was found to exist as mononuclear Fe(III)-OM complexes, indicating that this phase dominates the translocation of iron.
Article
Geochemistry & Geophysics
Caroline Bjorneras, Per Persson, Gesa A. Weyhenmeyer, Dan Hammarlund, Emma S. Kritzberg
Summary: This study found that Lake Bolmen mainly serves as a sink for iron from mineral sources, and increasing precipitation may lead to higher iron loading to lakes, resulting in enhanced iron sequestration in sediments.
Article
Environmental Sciences
Caroline Bjorneras, Gesa A. Weyhenmeyer, Dan Hammarlund, Per Persson, Emma S. Kritzberg
Summary: The increase in iron concentrations in lakes is likely due to increased loading from the catchment area rather than changes in the distribution between sediments and the water column. This may be caused by land-use changes, such as the expansion of coniferous forests over the past century.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Lelde Krumina, Michiel op de Beeck, Viktoriia Meklesh, Anders Tunlid, Per Persson
Summary: Recent studies have shown that decomposition of dissolved organic matter by ectomycorrhizal fungi enhances the adsorptive properties of organic matter towards soil mineral surfaces. Additionally, the iron-reduction induced by ECM fungus Paxillus involutus during organic matter decomposition plays a significant role in non-enzymatic Fenton-based decomposition of DOM. The results suggest that organic matter associated with ferrihydrite may be more susceptible to radical oxidation compared to goethite.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Biology
Milda Pucetaite, Adam Hitchcock, Martin Obst, Per Persson, Edith C. Hammer
Summary: Mineral-associated organic matter is a crucial part of the soil carbon pool, but the mechanisms are still not well understood. This study analyzed the interactions between fungi and soil minerals using X-ray microscopy and spectroscopy techniques, revealing the importance of the fungal-mineral interface chemistry in understanding carbon cycling in soil.
Article
Biotechnology & Applied Microbiology
Dimitrios Floudas, Luigi Gentile, Erika Andersson, Spyros G. Kanellopoulos, Anders Tunlid, Per Persson, Ulf Olsson
Summary: This study investigated the effects of cellulose degradation mechanisms employed by mushroom-forming fungi on the structure of cellulose microfibrils. Two main degradation mechanisms were identified, including enzymatic degradation and nonenzymatic cellulose degradation. The results also revealed a mismatch between decay classifications and cellulose degradation patterns, suggesting higher functional diversity than currently believed.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Mona Koder Hamid, Linda K. Mansson, Viktoriia Meklesh, Per Persson, Marie Skepo
Summary: This study investigates the structural changes of an intrinsically disordered protein (IDP) when it adsorbs to a solid surface. Molecular dynamics simulations and experimental results were used to compare and analyze the changes. The study found that adsorption increases the helical content and polyproline II helices of the protein, and extends its conformation. Simulations B, E, and G showed better agreement with experimental results than other simulations.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2022)
Article
Soil Science
Erika Andersson, Viktoriia Meklesh, Luigi Gentile, Abhishek Bhattacharya, Henrik Stalbrand, Anders Tunlid, Per Persson, Ulf Olsson
Summary: This study investigates the colloidal properties of dissolved organic matter (DOM) extracted from soil and identifies two main colloidal DOM species, fractal clusters and chain-like structures. The dominance of fractal clusters at low temperatures and the increase of chain-like structures at high temperatures are observed.
Article
Environmental Sciences
M. Skerlep, S. Nehzati, R. A. Sponseller, P. Persson, H. Laudon, E. S. Kritzberg
Summary: Increasing iron concentrations in freshwaters across northern Europe have led to browning, affecting aquatic organisms and drinking water production. The contribution of different sources to stream iron concentrations is not well understood. This study investigated the role of riparian and mire soils in regulating iron patterns in a boreal stream network over 18 years. Results showed that riparian soils were major contributors to increasing freshwater iron concentrations, and drought events led to prolonged release of iron from organic soils, with potential long-term effects on stream iron concentrations.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Review
Ecology
Anders Tunlid, Dimitrios Floudas, Michiel Op De Beeck, Tao Wang, Per Persson
Summary: This study shows that ectomycorrhizal fungi have substantial abilities to assimilate organic nitrogen associated with soil organic matter and mineral surfaces. The decomposition mechanisms differ between species, but share similarities with their saprotrophic ancestors. Additionally, the decomposition activities of fungi play a crucial role in the stabilization and reactivity of mineral-associated organic matter.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2022)
Article
Soil Science
Viktoriia Meklesh, Luigi Gentile, Erika Andersson, Abhishek Bhattacharya, Marcelo A. de Farias, Mateus B. Cardoso, Henrik Stalbrand, Watson Loh, Martin Skerlep, Emma Kritzberg, Anders Tunlid, Ulf Olsson, Per Persson
Summary: This study investigates the colloidal properties of dissolved organic matter (DOM) extracted from spruce forest soils. The results reveal the presence of two main types of colloids: semi-flexible cylinders and fractal aggregates. The distribution between these two colloids is influenced by the composition of soil organic matter and leaching temperature. These findings have important implications for the reactivity and stability of DOM colloids.
FRONTIERS IN SOIL SCIENCE
(2022)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
