Article
Chemistry, Inorganic & Nuclear
Patrick A. Julien, Grace Castle, Jordan Theriault, Tsuyoshi A. Kohlgruber, Allen G. Oliver, Peter C. Burns
Summary: The research indicates that insoluble uranium solids can be transformed into highly soluble uranyl peroxide compounds in the presence of a small amount of water, which has potential applications in uranium processing in both the front and back end of the nuclear fuel cycle.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Kyson R. Smith, Jan Ilavsky, Amy E. Hixon
Summary: This study investigates the interactions between U(60)Ox(30), [((UO2)(O-2))(60)(C2O4)(30)](60-), and Np(V) at different neptunium concentrations. The results show that neptunium induces aggregation of U(60)Ox(30) at neptunium concentrations of <= 10 mM, whereas (NpO2)(2)C2O4 center dot 6H(2)O(cr) and studtite form at 15-25 mM neptunium. These findings are important for understanding and applying uranyl peroxide nanoclusters in the recycling of used nuclear fuel.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yuanyuan Liang, Lei Mei, Qiuyan Jin, Junshan Geng, Jingyang Wang, Kang Liu, Kongqiu Hu, Jipan Yu, Weiqun Shi
Summary: In this study, a novel supramolecular inclusion-based method using two macrocyclic hosts, CB[7] and CB[8], was applied to facilitate hierarchical assembly of uranyl metallacycles. Two different types of uranyl metallacycle-based complexes with intriguing hierarchical structures were successfully prepared. The results demonstrate the feasibility of supramolecular inclusion for regulating the coordination assembly of uranyl metallacycles.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Li-Wen Zeng, Kong-Qiu Hu, Zhi-Wei Huang, Lei Mei, Xiang-He Kong, Kang Liu, Xiao-Lin Zhang, Zhi-Hui Zhang, Zhi-Fang Chai, Wei-Qun Shi
Summary: Two complexes can be obtained based on the diverse secondary assembly of U4L4 cages by adjusting the carbon chain length of organic templates, and the mechanism of different arrangements of U4L4 cages induced by organic templates was explored in detail.
DALTON TRANSACTIONS
(2021)
Article
Engineering, Environmental
Yuhui Liu, Yaning Lu, Shuang Zhang, Xiaoyan Li, Zhibin Zhang, Liya Ge, MengYu Chang, Yunhai Liu, Grzegorz Lisak, Sheng Deng
Summary: In this study, an amphiphilic ligand NND was successfully synthesized and used to enhance the adsorption capacity of MoS2 particles for UO22+ by replacing H2O through hydrogen bonding. The NND-modified MoS2 showed higher adsorption capacity and stronger stability under extreme conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pan-Pan Sun, Bao-Liang Han, Hong-Guang Li, Cheng-Kai Zhang, Xia Xin, Jian-Min Dou, Zhi-Yong Gao, Di Sun
Summary: This study systematically investigates the complex dynamics of a Cu-I nanocluster, Cu8a, and deduces the directed self-assembly process by monitoring the aggregation-induced emission and electron microscopy. The polymorphism and different emission properties of Cu NCs aggregates are successfully captured, and the structure-optical property relationship is established. Furthermore, the introduction of carbon dots as luminescent agents enriches the visualization fluorescence window, offering great potential for real-time optical sensing of materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Physics, Applied
Shivam Awasthi, Anita Mohan, Kamalesh K. Singh
Summary: Our study demonstrated the self-assembly of semiconducting ZnO Quantum Dots into lattice-aligned, symmetrical superstructures through diethanolamine-mediated mesoscopic self-assembly. The resulting thin films exhibited excellent surface and interfacial properties, as well as exceptional long-term stability.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Nico Kummer, Caroline E. Giacomin, Peter Fischer, Silvia Campioni, Gustav Nystrom
Summary: Amyloid fibrils from inexpensive food proteins and nanocellulose have diverse applications and their hybrid materials have improved mechanical properties due to electrostatic interactions. These interactions increase the elasticity of the amyloid network by cross-linking individual fibrils. The combination of nanocellulose morphology contributes differently to the elasticity, with cellulose nanocrystals inducing bundling and network formation, and cellulose nanofibrils forming a second network. The gained knowledge on colloidal interactions provides a basis for designing functional biohybrid materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zhaoyu Liu, Dong Yao, Lin Ai, Huiwen Liu, Shitong Zhang, Hao Zhang
Summary: The study explores the use of halogen effects to tune the emission color of copper nanocluster self-assembly nanosheets, achieving tunable emission peaks by altering the adsorbed halogens. This approach demonstrates the potential for enhancing photoluminescence quantum yield and obtaining full-color emission through the simple introduction and mixing of cuprous halides in the assembly process, leading to the fabrication of monochrome and white LEDs.
Article
Engineering, Chemical
Shuhao Wang, Shaosuo Bing, Yunhao Li, Yong Zhou, Lin Zhang, Congjie Gao
Summary: This study deconstructs the kinetic pathways of interfacial polymerization (IP) to probe the structure of polyamide (PA) nanofilm, demonstrating that the structure can be controlled by adjusting the monomers’ stoichiometric ratio at the new reaction interface. The resulting nodules with controlled size and surface characteristics offer tunable water-salt transport properties. These insights potentially guide the production of high-performance polyamide-based thin-film composite membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Oksana Patsahan, Marek Litniewski, Alina Ciach
Summary: The study investigates the interaction between particles in a binary mixture under spherically-symmetrical potentials, leading to microsegregation. Both theory and MD simulations demonstrate coexistence of different phases with varying densities and degrees of order, with the phase diagram showing significant differences from mean-field predictions. The ordered phases exhibit crystalline structures in the solid form, while lacking in the liquid crystals, with a prolate shape noted in monocrystals that deviates from a spherical shape with increasing periodic order.
Article
Chemistry, Multidisciplinary
Cheng-Bo Tao, Ji-Qiang Fan, Wenwen Fei, Yan Zhao, Man-Bo Li
Summary: This paper reports an Au4Ni2 nanocluster with a square-planar [-PPh2-Au-S-Au-](2) ring and two nickel-pincer arms. Abundant intra- and inter-cluster noncovalent interactions promote the assembly of the nanocluster into a porous framework material. The solubility and photoluminescence properties depending on the assembly were also investigated.
Article
Chemistry, Multidisciplinary
Filip Hasecke, Chamani Niyangoda, Gustavo Borjas, Jianjun Pan, Garrett Matthews, Martin Muschol, Wolfgang Hoyer
Summary: The study found that in the assembly of A beta and lysozyme, protofibrils bind to the lateral surfaces of amyloid fibrils, inhibiting the self-proliferation of amyloid fibrils. This suggests that metastable oligomers counteract the replacement by amyloid fibrils through competing for monomers and blocking secondary nucleation sites.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Biochemistry & Molecular Biology
Jingxia Wang, Wensu Yuan, Ruiqi Qin, Tiantian Fan, Jing-song Fan, Weidong Huang, Daiwen Yang, Zhi Lin
Summary: This study reveals the roles of both terminal domains of tubuliform spidroin 1 (TuSp1) in silk fiber formation, showing that their interactions drive rapid TuSp1 self-assembly and fiber formation. The findings also indicate that interactions among the terminal domains contribute to the alignment of spidroin chains in fiber formation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Physics, Condensed Matter
Mikhail Khenner
Summary: This article discusses two simple kinetic models of quantum size effect-directed nanocluster self-assembly in circular atomic corrals. The models correspond to an adsorption and an adsorption-diffusion regimes, which are typical at low and high temperatures respectively. It is found that small variations in the electronic local density of states are the main factor that hinders self-assembly in the latter regime.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Chemistry, Inorganic & Nuclear
Melissa Fairley, Daniel E. Felton, Ginger E. Sigmon, Jennifer E. S. Szymanowski, Nicholas A. Poole, May Nyman, Peter C. Burns, Jay A. LaVerne
Summary: Single-crystal X-ray diffraction studies of untreated and gamma-irradiated Ca-2[UO2(O-2)(3)]·9H2O show atomic-level changes as the material transitions from crystalline to amorphous with increasing irradiation dose. Irradiation leads to conversion of peroxide groups to hydroxyl groups through interactions with neighboring lattice water molecules. Comparisons of irradiation products of two different uranyl triperoxide monomers provide insights into the influence of Li+ and Ca2+ countercations on the transformation process.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Tsuyoshi A. Kohlgruber, Samuel N. Perry, Ginger E. Sigmon, Allen G. Oliver, Peter C. Burns
Summary: Seven new uranyl sulfate compounds with organic charge-balancing cations have been synthesized and analyzed. Comparisons and analyses were done on 54 known uranyl sulfate compounds with organic charge-balancing cations, including the seven newly synthesized compounds. The study helps understand how the organic cations stabilize the crystal structures of these materials.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Engineering, Environmental
Isabel Meza, Jorge Gonzalez-Estrella, Peter C. Burns, Virginia Rodriguez, Carmen A. Velasco, Ginger E. Sigmon, Jennifer E. S. Szymanowski, Tori Z. Forbes, Lindsey M. Applegate, Abdul-Mehdi S. Ali, Peter Lichtner, Jose M. Cerrato
Summary: We studied the solubility and thermodynamic properties of two meta-autunite group uranyl arsenate solids. The experiment results showed that the solubility products of NaUAs and KUAs ranged from -23.50 to -22.96 and -23.87 to -23.38, respectively. Secondary phases were identified in the reacted solids, indicating that H3O+ co-occurring with Na or K in the interlayer region can influence the solubilities of uranyl arsenate solids. The standard-state enthalpy of formation from the elements for NaUAs and KUAs is -3025 +/- 22 kJ mol-1 and -3000 +/- 28 kJ mol-1 respectively, consistent with values reported in other studies for uranyl phosphate solids. This work provides important thermodynamic information for understanding the influence of uranyl arsenate solids on soluble concentrations of U and As in contaminated waters.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Geochemistry & Geophysics
Bartosz Puzio, Lei Zhang, Jennifer E. S. Szymanowski, Peter C. Burns, Maciej Manecki
Summary: Thermodynamic parameters were measured for synthetic analogs of the mimetite-group minerals belonging to the apatite supergroup. The dissolution enthalpy and enthalpy of formation from the elements were determined experimentally, showing typical trends for apatite minerals. The correlations between thermodynamic stability and chemical factors can be used to predict the values for unexplored phases in the apatite supergroup.
AMERICAN MINERALOGIST
(2023)
Article
Chemistry, Multidisciplinary
Virginia G. Rodriguez, Peter C. Burns
Summary: Electrospray ionization tandem mass spectrometry was used to investigate the gas phase fragmentation of uranyl peroxide nanoclusters with different bridging ligands. The clusters yielded uranium monomers and dimers with specific mass-to-charge ratios, as well as UO6- anions resulting from the cleavage of a uranyl ion bound to peroxide groups.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Virginia G. Rodriguez, Heather J. Culbertson, Ginger E. Sigmon, Peter C. Burns
Summary: The ionization processes of uranyl triperoxide monomer (UT) and uranyl peroxide cage cluster (U28) were investigated using electrospray ionization mass spectrometry (ESI-MS). Various experiments provided insights into the mechanisms of ionization, including tandem mass spectrometry with collision-induced dissociation, the use of different solvents and nebulizer gases. The observed anions in the UT and U28 systems were attributed to gas-phase combinations, reduction-oxidation reactions, and ionization of surrounding analytes. The electronic structures of anions UOx- (x = 6-8) were studied using density functional theory (DFT).
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Stefania Dede, Khachatur V. Manukyan, Jordan M. Roach, Daniel Robertson, Peter C. Burns, Ani Aprahamian
Summary: Combustion synthesis is used to prepare thin UO2 films on aluminum alloy substrates. The annealing temperature significantly influences the crystallinity and stability of the materials during irradiation. The diffusion of Mg in the alloy substrate affects the interfacial layer formation and the mixing of Al2O3 with UO2.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Editorial Material
Chemistry, Multidisciplinary
A. Kirstin Sockwell, Teagan F. M. Sweet, Brodie Barth, Sara B. Isbill, Nicole A. DiBlasi, Jennifer E. S. Szymanowski, Ginger E. Sigmon, Allen G. Oliver, Andrew J. Miskowiec, Peter C. Burns, Amy E. Hixon
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Daniel E. Felton, Tsuyoshi A. Kohlgruber, Zachary D. Tucker, Eva M. Gulotty, Brandon L. Ashfeld, Peter C. Burns
Summary: In this study, ionothermal syntheses were used to control the formation of uranyl salt complexes. The high thermal stability and ligation potential of ionic liquids were utilized to enable the ligation of the anionic component and promote speciation. The study also investigated the factors influencing the formation of uranyl complexes, such as the type of cation in the ionic liquid and the choice of uranium source.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Inorganic & Nuclear
Savannah E. Benjamin, Jay A. LaVerne, Ginger E. Sigmon, Peter C. Burns
Summary: Irradiation of metaschoepite powder leads to its reaction with water vapor and atmospheric constituents, resulting in the formation of studtite. Crystal structures show an intermediate uranium oxide phase that accelerates the formation of studtite compared to high relative humidity systems alone. The effects of water vapor and He ion irradiation on metaschoepite particles are studied, revealing the presence of a uranyl oxide phase similar to γ-UO3 or U2O7. Short-term storage at elevated relative humidity accelerates the formation of studtite. The results provide insights into thermal and radiolytic degradation products in both uranyl hydroxide phases and uranyl peroxide phases.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Daniel E. Felton, Bryan E. Galeas, Peter C. Burns
Summary: Three new uranyl phosphonate frameworks with barium or lead were synthesized hydrothermally using specific ligands. The structures of these frameworks were analyzed and compared, revealing different cross-linked chains and packing arrangements. The effect of iron concentration on the crystallization of a barium uranyl phosphonate framework was investigated, as well as the use of iron to grow larger crystals of a phosphonoacetate lead framework. The dissociation of the barium-containing framework in water was also observed.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Engineering, Environmental
Isabel Meza, Han Hua, Kaelin Gagnon, Anjali Mulchandani, Jorge Gonzalez-Estrella, Peter C. Burns, Abdul-Mehdi S. Ali, Michael Spilde, Eric Peterson, Peter Lichtner, Jose M. Cerrato
Summary: This study investigated the co-occurrence of uranyl and arsenate in contaminated water and the use of natural materials for their removal. The results showed that natural materials such as limestone and hydroxyapatite can effectively remove mixtures of uranyl and arsenate.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
A. A. Ultarakova, Z. B. Karshyga, N. G. Lokhova, M. A. Naimanbaev, A. M. Yessengaziyev, P. Burns
Summary: This study investigates the processing of waste dust from electrical smelting of ilmenite concentrates with the removal of silica. The optimal conditions for leaching and fluorination were determined, and the silicon oxide content in the obtained product was found to be 96.3%.
KOMPLEKSNOE ISPOLZOVANIE MINERALNOGO SYRA
(2022)
Article
Metallurgy & Metallurgical Engineering
A. M. Yessengaziyev, A. A. Ultarakova, P. C. Burns
Summary: The physical and chemical properties of the cake from nitric-acid leaching of titanium production sludge were analyzed. The majority of silicon in the cake exists as quartz, albite, sillimanite, and sodium aluminosilicate. Titanium is mainly present in the form of rutile and titanium aluminum oxide. The optimal parameters for the fluoroammonium processing of the cake were determined. The resulting products were high-purity titanium and silicon dioxide.
KOMPLEKSNOE ISPOLZOVANIE MINERALNOGO SYRA
(2022)
