Article
Materials Science, Multidisciplinary
Wenquan Wang, Yu Cui, Rui Liu, Li Liu, Fuhui Wang
Summary: This study analyzed the internal corrosion penetration of GH4169 with NaCl deposition in humid environments. The results showed that the depth of penetration increased parabolically with time and exponentially with stress levels during limited exposure time. The accelerated diffusion of oxygen due to stress gradient promoted the penetration. Additionally, the release of stress caused by oversaturated vacancies and voids from active corrosion negatively impacted the growth of corrosion penetration.
Article
Materials Science, Multidisciplinary
J. Turnbull, M. Behazin, J. Smith, P. G. Keech
Summary: Metallurgical and microscopy examinations found no quantifiable differences between irradiated and non-irradiated sections of Cu piping, providing evidence for the safety case of using Cu-coated used fuel container for the permanent disposal of high-level nuclear waste.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Tina Tabrizizadeh, Zhe She, Kevin Stamplecoskie, Guojun Liu
Summary: Water-evaporation-induced generators (WEIGs) are environmentally friendly power sources, but they traditionally have weak power outputs. This study introduces C/metal and metal/metal WEIGs, which utilize the Galvanic corrosion of metals to significantly enhance the power output of WEIGs. The study also demonstrates that the asymmetric environments and potential differences between the two electrodes in a WEIG can facilitate metal corrosion and the fabrication of compact Galvanic WEIGs.
Article
Nanoscience & Nanotechnology
Haoyu Liu, Xiaofan Guo, Xianhai Pang, Junping Zhao, Qiaogen Zhang
Summary: This study systematically investigates the effects of current rate on the resistive stage and diffusion process of electrically exploding wires (EEWs) in argon gas. The results show that the characteristics of EEWs and the size distribution of nanoparticles change as the current rate increases.
Article
Environmental Sciences
Jiarui Wu, Naifang Bei, Weiguo Liu, Meng Xing, Suixin Liu, Tao Song, Xia Li, Ruonan Wang, Qian Jiang, Hu Bo, Xuexi Tie, Junji Cao, Guohui Li
Summary: This conceptual scheme illustrates the presence of more humid air during haze pollution, and identifies three different ways that contribute to the humidity, including ARI, anthropogenic combustion-derived water, and humid air transported from south or east.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Materials Science, Multidisciplinary
Menghao Liu, Zhiyong Liu, Cuiwei Du, Xiaoqin Zhan, Xiaojia Yang, Xiaogang Li
Summary: This study investigated the SCC behavior of 21Cr2NiMo steel in SO2-polluted coastal atmospheres and found that it exhibits high susceptibility to SCC in high SO2 contents. The results showed that the addition of SO2 increased the corrosion current, promoted pitting, and led to SCC initiation at corrosion pits.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Multidisciplinary Sciences
Taj Muhammad Khan, Gustavo Andrade Silva Alves, Amjad Iqbal
Summary: Dielectric-barrier-discharge (DBD) plasma jets were used to interact with particle aerosols and transport them for deposition on a substrate. The effects of argon and helium plasma jets on the nanoparticle deposition and aggregation were compared using various microscopy techniques. The study found that the plasma jets facilitated the transport of particle aerosols, with argon leading to larger particle deposition and aggregation, while helium enabled the deposition of well-dispersed particles. The findings have important implications for applications in sensing, catalysis, coating technology, and biological activities.
SCIENTIFIC REPORTS
(2023)
Article
Thermodynamics
Junlin Chen, Jiangfeng Guo, Xunfeng Li, Xiulan Huai, Keyong Cheng, Haiyan Zhang, Zengxiao Han
Summary: A novel heat exchanger unit structure was adopted to improve the thermal-hydraulic performance of compressed humid air and high-temperature flue-gas in a megawatt grade humid air turbine cycle. The staggered airfoil channels were found to have the best comprehensive thermal-hydraulic performance, with correlations proposed to predict thermal-hydraulic performances and effects of moisture content on heat transfer described quantitatively. Results and correlations provide guidance for the design and application of recuperator structures with airfoil fins for the MW grade HAT cycle.
APPLIED THERMAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Wenquan Wang, Yu Cui, Rui Liu, Li Liu, Fuhui Wang
Summary: Under a humid environment of 600°C with applied stress, NaCl-deposited specimens of Ni-based superalloy GH4169 exhibited internal corrosion. The stress and chloride ions synergistically changed the composition of the corrosion product, leading to intensified internal corrosion. This phenomenon is mainly attributed to the stress-promoted active oxidation mechanism and inward diffusion of oxygen.
Article
Construction & Building Technology
Jaqueline Litardo, Claudio Del Pero, Luca Molinaroli, Fabrizio Leonforte, Niccolo Aste
Summary: This paper examines space cooling solutions for non-residential buildings in hot-humid climates and identifies all-air systems with heat recovery and radiant ceiling coupled with air handling as the most recommended options. The findings can be extrapolated to other developing cities and provide guidance for future research.
BUILDING AND ENVIRONMENT
(2022)
Article
Environmental Sciences
Ruoyi Xie, Yiyang Xu, Jinhui Yang, Shaozhi Zhang
Summary: This study investigated the indoor air quality in an old badminton hall during the humid season, revealing significant differences in results obtained through objective and subjective approaches. While indoor PM, TVOC, and CO2 concentrations were normal, many participants still complained about the smell of building materials and obvious sweaty odor.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Materials Science, Multidisciplinary
Mehran Behazin, Scott Briggs, Fraser King
Summary: This paper presents the development of a mixed-potential model that combines the anodic dissolution of copper with the oxidation and reduction of radiolysis products, enabling the long-term prediction of radiation-induced corrosion of copper. The overall conceptual model is described, followed by a detailed discussion on the use of COMSOL software to predict bulk radiolysis behavior. Several validation methods, including comparison with short-term experimental data, are employed to validate the COMSOL model. The underlying principles, assumptions, and validation results are presented.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2023)
Article
Energy & Fuels
Stuart Bell, Madjid Sarvghad, Teng-Cheong Ong, Daniel Naylor, Xiaodong Wang, Yanting Yin, Raihan Rumman, Gunther Andersson, Geoffrey Will, David A. Lewis, Theodore Steinberg
Summary: Next generation concentrated solar thermal power can achieve receiver temperatures up to 800 degrees C. However, current solar salt based thermal storage is limited to 560 degrees C. Eutectic salt mixtures were investigated as potential latent heat energy storage media, and showed a smaller physical size of the storage system. The compatibility of a binary eutectic mixture of K2CO3 and Na2CO3 salt with three high temperature alloys was assessed, and the salt was found to be highly corrosive to the alloys.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Physical
Yue Xing, Jiaxin Wu, Caishun Zhang, Lei Zhang, Jiao Han, Daosheng Liu, Honghao Wang, Xiaoning Hou, Zhixian Gao
Summary: A series of xMnCu/Ce catalysts with constant low Cu loading of 1 wt% were prepared by the simple impregnation method. The catalysts exhibited good catalytic performance in the preferential oxidation of CO, with the best performance observed at Mn/Cu = 0.6. The CO conversion increased by 23.57% compared to the Cu/Ce catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Ravindra Singh Bisht, Sudipta Chatterjee, Sreyan Raha, Achintya Singha, D. Kabiraj, D. Kanjilal, A. K. Raychaudhuri
Summary: We demonstrate that controlled introduction of disorder through ion irradiation suppresses the metal-insulator transition in NdNiO3 films. The films exhibit a heavily disordered conductor governed by weak localization and an Anderson localized state at higher disorder. The experimental results show a suppression of the insulating state and a transition to a state of finite conductivity at low temperature in a disordered conductor. Similar behavior is also observed in La substituted NdNiO3 films irradiated with ion irradiation.
Article
Environmental Sciences
Alexander N. Chernyshev, Annika C. Maier, Mats Jonsson, Kerstin Forsberg
Summary: The solubilisation of Ni(II) and Eu(III) in alkaline solutions by complexation with a polyaryl ether based superplasticizer was studied. The solubility of the metals increased with higher concentration of superplasticizer but decreased at higher pH due to rapid degradation of the superplasticizer. The complexation of the metals with the PAE polymer occurred via the phosphate group of the superplasticizer.
Review
Biochemistry & Molecular Biology
Clelia Dispenza, Daniela Giacomazza, Mats Jonsson
Summary: Bio-hybrid hydrogels utilize radiation technologies to enhance biological activity, control chemical reactions, and have potential sterilization functions. They can serve as delivery devices for therapeutic biomolecules and create hydrogel patterns on surfaces.
Article
Chemistry, Multidisciplinary
Sawsan El Jamal, Mats Johnsson, Mats Jonsson
Summary: This study investigates the dissolution of uranium in aqueous solutions containing HCO3- and H2O2. The experiments show that UC dissolves readily in a solution with 10mM HCO3- and the presence of H2O2 further enhances its dissolution. UC also dissolves in pure water with H2O2, although at a slower rate compared to solutions containing both HCO3- and H2O2.
Article
Chemistry, Multidisciplinary
Zhuofeng Li, Diana Piankova, Yi Yang, Yuta Kumagai, Hannes Zschiesche, Mats Jonsson, Nadezda V. Tarakina, Inna L. Soroka
Summary: The study reveals that intermediate phases play a crucial role in CeO2 mesocrystal formation by converting Ce-III into Ce-IV. The evolution of CeO2 mesocrystals involves multiple stages, ultimately leading to the formation of complex hierarchical architectures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Veena Singh, Claudio M. Lousada, Mats Jonsson, Liubov M. Belova
Summary: This paper reports a high throughput method for inkjet printing of nano-structured photocatalytically active TiO2 films, which shows higher photocatalytic performance and mechanical stability compared to films made via the traditional doctor blade method. It suggests that inkjet printing can be an efficient method for the large-scale production of TiO2 photocatalysts.
Article
Chemistry, Inorganic & Nuclear
Junyi Li, Zoltan Szabo, Mats Jonsson
Summary: This study identified the ternary uranyl-peroxo-chloro and uranyl-peroxo-bromo complexes using spectroscopy techniques. The uranyl-peroxo-chloro complex was found to be more stable than the uranyl-peroxo-bromo complex, which transforms into studtite at high uranyl and H2O2 concentrations. Studtite was also found to dissolve under high ionic strength conditions, suggesting it may not be a stable solid phase under very saline conditions. The uranyl-peroxo-bromo complex was shown to facilitate H2O2 decomposition via reactive intermediates.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Ghada El Jamal, Thomas Gouder, Rachel Eloirdi, Mats Jonsson
Summary: Photoelectron spectroscopy study of the U5f emission provides valuable insight into the surface oxidation mechanism of uranium oxides. Different methods are used to determine the surface oxidation state and track the surface modification and reduction under various oxidative conditions.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Daniel Olsson, Junyi Li, Mats Jonsson
Summary: The interfacial radiation chemistry of UO2 is crucial for the development of corrosion rate prediction models for spent nuclear fuel in contact with groundwater. The oxidative dissolution of UO2 induced by radiolytically produced H2O2 is of great significance. Stable uranyl peroxo-carbonato complexes formed by UO22+ in water containing H2O2 and HCO3-/CO32- have been largely overlooked in previous studies. Experimental results show that these complexes have little to no reactivity with the solid UO2 surface under certain conditions. The dissolution rate depends on the UO22+ concentration and is limited by the free H2O2 fraction.
Article
Chemistry, Physical
Celice Carlsson, Benjamin Fegeant, Emelie Svensson, Love Wiklund, Mats Jonsson
Summary: This study investigates the selectivity and formaldehyde yield of Tris and methanol as probes for surface-bound hydroxyl radicals in homogeneous and heterogeneous systems. The experiments demonstrate that Br2 & BULL;− reduces the formaldehyde yield compared to hydroxyl radicals in the homogeneous methanol system, while Tris increases the yield. Similar trends are observed in the photocatalysis system. The paper discusses the reasons for these changes and the suitability of Tris and methanol as probes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Zhuofeng Li, Inna L. Soroka, Nadezda V. Tarakina, Maria Antonietta Sabatino, Emanuela Muscolino, Marta Walo, Mats Jonsson, Clelia Dispenza
Summary: In this study, inorganic-organic hybrid nanoparticles were synthesized via radiation synthesis in aqueous dispersions containing radiation-synthesized poly(N-vinyl pyrrolidone) (PVP) nanogels. The experiments indicated strong interactions between the inorganic precursors (Ag+ and Ce3+) and the nanogel prior to irradiation. Characterization using X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed the formation of crystalline Ag and CeO2. Both techniques revealed that the inorganic nanoparticles were evenly distributed in/on the nanogel, and their size was controlled by the nanogel.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Junyi Li, Xianjie Liu, Mats Jonsson
Summary: This study experimentally investigated the change in UO2 reactivity after exposure to O2 or gamma-radiation. The results showed that the reactivity of UO2 decreased significantly over time, especially in consecutive exposures. Surface analysis revealed that UO2 surfaces were significantly oxidized under all exposure conditions, with the presence of U(V) and no U(VI) observed.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hannes Zschiesche, Inna L. Soroka, Mats Jonsson, Nadezda V. Tarakina
Summary: This study investigates the influence of irradiation dose on the growth mechanisms and morphology of CeO2 particles formed through the radiolytic oxidation of Ce3+ in aqueous solution. The results show that different dose rates do not affect the growth pathway of CeO2 particles and result in the formation of highly ordered structures. Additionally, locally applied irradiation induces Ce-ion concentration gradients, impacting the growth of CeO2 and leading to the appearance of branched morphologies.
Article
Chemistry, Physical
Celice Carlsson, Benjamin Fegeant, Emelie Svensson, Love Wiklund, Mats Jonsson
Summary: This study investigates the selectivity and formaldehyde yield of Tris and methanol as probes for surface-bound hydroxyl radicals. The experiments show that Br2& BULL;- reduces the formaldehyde yield, while Tris increases it, compared to hydroxyl radicals. Similar trends are observed in the photocatalysis system, but more pronounced.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Ghada El Jamal, Thomas Gouder, Rachel Eloirdi, Mats Jonsson
Summary: The study investigates the effects of different gas plasmas on thin films of UO2, U2O5, and UO3, finding that the surface of UO2 is oxidized to a higher oxidation state after interacting with water plasma at 400 degrees C, and that the outermost surface layer in all three cases is composed of hexavalent uranium.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Yi Yang, M. Johansson, A. Wiorek, N. V. Tarakina, F. Sayed, R. Mathieu, M. Jonsson, I. L. Soroka
Summary: A versatile method for producing metallic nickel nanoparticles was demonstrated using gamma-radiation induced reduction. The synthesized material consists of fcc Ni particles with a size of 3.47 +/- 0.71 nm, and shows ferromagnetic-like behavior with lower magnetization compared to bulk Ni. The nanomaterial exhibits good electrochemical reversibility and a large active surface area, making it a potential candidate for energy storage devices.
DALTON TRANSACTIONS
(2021)