Article
Chemistry, Analytical
Sabriye Yusan, Sule Aytas, Senol Sert, Oguz Akpolat, Ozge Elmastas Gultekin
Summary: In this study, magnetic (Fe3O4) nanobiocomposite were synthesized using pectin biopolymer as a stabilizer by a co-precipitation method. The nanobiocomposites were characterized by several methods. The nanobiocomposite exhibited a particle size of 5.76 nm and a surface area of 94.651 m(2)/g. TEM and SEM results showed that the spherical nanoparticles were well dispersed in the polymer matrix. The optimal adsorption parameters were determined, and the main effects on Sr(II) removal were found to be pH and initial concentration. The maximum sorption capacities according to D-R and Langmuir isotherms were determined as 0.018 mol/g and 26.455 mg/g, respectively.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Physical
Emad S. Goda, Sang Eun Hong, Kuk Ro Yoon
Summary: This study introduces a novel bottom-up protocol for the deposition of Cu-PBA@GO nanocubes as a binder-free electrode for supercapacitors. The impact of reaction cycles on the morphology, crystallinity, and electrochemical behavior of copper hexacyanoferrate nanocubes was investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Yu -Hsiang Yang, Yi-Heng Tu, Hung-Yi Huang, Chi -Chang Hu
Summary: A membrane-free hybrid system utilizing battery-type copper hexacyano-ferrate and pseudocapacitive polypyrrole electrodes was developed for faradaic desalination. The system exhibited a significant increase in salt removal capacity and demonstrated efficient removal of other cations.
Article
Polymer Science
Chao Hu, Zuhong Zheng, Mengyao Huang, Fan Yang, Xuewei Wu, Aiqun Zhang
Summary: This study analyzed a magnetite-chitosan composite through various techniques and explored its adsorption properties for Cu(II) and Cd(II). The results showed that the optimum pH for adsorption was 5.0, the equilibrium time was about 10 minutes, and the adsorption capacity reached 26.28 mg/g for Cu(II) and 18.67 mg/g for Cd(II). The temperature had a certain impact on the adsorption amount, and the composite material had a relatively rough outer surface, with dominant adsorption being attributed to chitosan. The research suggests the importance of further optimizing the composite system through green synthesis for heavy metal adsorption.
Article
Engineering, Environmental
Bo Gao, Hai-Rong Yu, Hui-Yao Zhang, Ting Liang, Chang-Jing Cheng
Summary: A novel potassium copper hexacyanoferrate embedded hydrogel has been developed for efficient and selective adsorption of cesium ions from nuclear waste. The hydrogel exhibits fast kinetics, high stability, and high adsorption capacity. This research is significant for the treatment of radioactive wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Fei Chen, Xinlong Yan, Xiaoyan Hu, Rui Feng, Tianbo Li, Xiaobing Li, Guofeng Zhao
Summary: In this study, copper hexacyanoferrate nanospheres decorated copper foams were synthesized and used as catalysts for the reduction of pnitrophenol and azo dyes. The catalyst calcinated at 200°C exhibited high catalytic activity and excellent reusability. The mechanism study revealed that fast electron transfer and enhanced adsorption contributed to the catalyst's enhanced performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Chemical
Ruberlan Gomes Silva, Jose Maria Silva, Thiago Cesar Souza, Matheus Bianchetti, Lorena Guimaraes, Lucas Reis, Eugenio Oliveira
Summary: This study focuses on producing a high-quality magnetite pellet feed from IOCG industrial copper tailings in northern Brazil. Through a series of processing steps, a saleable magnetite pellet feed with high chemical quality was obtained, while also reducing the amount of tailings produced. Additionally, a non-magnetic rougher tailing with potential applications in the construction industry and as soil remineralizer was generated as a by-product.
MINERALS ENGINEERING
(2021)
Article
Engineering, Chemical
Yonghwan Kim, Ho Hyeon Eom, Dohyeun Kim, David Harbottle, Jae W. Lee
Summary: This study presents a novel immobilization strategy to synthesize a composite adsorbent embedding KCuHCF for effective cesium ion separation, exhibiting high adsorption capacity and selectivity even under seawater conditions. The membrane filtration experiment using the composite as a membrane showed efficient decontamination by removing cesium with high flux, indicating a practical alternative in radioactive wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Junjie Quan, Enze Xu, Yajing Chang, Yi Zhu, Pengcheng Li, Li Wang, Zhenjie Sun, Dabin Yu, Yang Jiang
Summary: Researchers have successfully fabricated a flexible cathode with outstanding electrochemical properties, with a capacity of 151 mA h.g(-1) and over 100 cycles of striking cyclability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Sang-Hun Lee, Mansoo Choi, Jei-Kwon Moon, Sung-Wook Kim, Songbok Lee, Iseul Ryu, Jihoon Choi, Seonbyeong Kim
Summary: In this study, copper hexcacyanoferrate (CuHCF) was used as an electrode material for the efficient removal of cesium (Cs) ions from radioactive liquid waste. CuHCF demonstrated outstanding electrosorption capacity and high selectivity for Cs+ ions, as well as remarkable adsorption performance in a wide pH range. The CuHCF electrode also showed excellent cycling stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Antonio Domenech-Carbo, Silvana Lopez, Bastian Chandia, Gustavo Caceres, Eduardo Munoz
Summary: The cation-insertion solid state electrochemistry of a potassium copper(II) hexacyanoferrate has been studied using voltammetry and SEM/EDS analysis. The stoichiometry of the synthesized solid is determined, and the Gibbs energy changes of electron transfer are measured. The behavior of the Fe(III) centers bound to cyano groups is cation-dependent, and there is significant co-cation diffusion in Li+ electrolytes.
Article
Environmental Sciences
Hatsuho Usuda, Koji Sakurai, Akira Takahashi, Tohru Kawamoto, Kimitaka Minami
Summary: The study utilized copper hexacyanoferrate adsorbent to desorb ammonia and turn it into a reusable form, demonstrating that adsorbed ammonia can desorb into saturated ammonium hydrogencarbonate solution. The precipitation of NH4HCO3 was confirmed, providing a new pathway for the recovery of ammonia from waste gas.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Analytical
Rosalinda Sciacca, Mario Berrettoni, Paolo Conti, Marco Giorgetti
Summary: This paper investigates electrodeposited films (NiHCF and CuHCF) as host materials for rare earth elements (REE), showing their capability for metal recovery. The ion insertion/release process was observed to be reversible for both heavy and light REEs, and a chemometric approach was used to study the amount of REEs inserted/released and the kinetic evolution.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Zulkhair Mansurov, Gaukhar Smagulova, Bayan Kaidar, Aigerim Imash, Aidos Lesbayev
Summary: This study presents the results of synthesizing PAN-magnetite composite fibers using the electrospinning method and the analysis of their properties. Homogeneous Fe3O4 magnetite nanoparticles were successfully synthesized and uniformly distributed on the surface of the fibers. The addition of magnetite led to a decrease in the fiber diameter.
Article
Materials Science, Multidisciplinary
Wei Yang, Lin Xu, Wen Luo, Meng Huang, Kai Fu, Rongguo Song, Chunhua Han, Rong Tu, Ji Shi, Liqiang Mai
Summary: In this study, a novel dual-complexant electrodeposition method was used to construct a 3D hierarchical structure of ammonium copper hexacyanoferrate on porous Ni, forming an organic-inorganic hybrid cathode for rechargeable zinc-ammonium hybrid microbatteries. The microbattery exhibits a high discharge plateau and remarkable energy density, enabling it to drive an RF chips-LED system, suggesting its potential as a candidate for self-powered microelectronic devices.
Article
Materials Science, Multidisciplinary
Liuming Wei, Jingwen Li, Yonggang Li, Qirong Zheng, Fan Cheng, Chuanguo Zhang, Jingyu Li, Gaofeng Zhao, Zhi Zeng
Summary: This study investigates the influence of He-V complexes on H behaviors on different W surfaces using DFT calculations. The results show that H dissolution is most difficult but H trapping is easiest on the W (110) surface, while the opposite is true on the W (111) surface. Moreover, the presence of He-V complexes increases the difficulty of H diffusion from bulk to surface and desorption.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yan Meng, Song Zeng, Chen Chen, Chaowen Zhu, Huahai Shen, Xiaosong Zhou, Xiaochun Han
Summary: The characteristics of magnetron sputtered Cr coatings vary with different temperature, bias voltage, and pressure. Coatings with random orientation, good crystallinity, and small grain size exhibit favorable oxidation behavior, while coatings with strong (200) texture, poor crystallinity, and large grains have many intrinsic defects that are detrimental to the protection property of the Cr coatings.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xinyuan Xu, Zefeng Yu, Wei-Ying Chen, Aiping Chen, Arthur Motta, Xing Wang
Summary: This study presents an automated approach for characterizing grain morphology in TEM images recorded during ion irradiation. By combining a machine learning model and a computer vision algorithm, comparable results to human analysis can be achieved with significantly reduced analysis time. Researchers can train their own models following the procedures described in this study to automate grain morphology analysis of their own TEM images.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shihao Wu, Dong Wang, Yapei Zhang, Koji Okamoto, Marco Pellegrini, Wenxi Tian, Suizheng Qiu, G. H. Su
Summary: The oxidation and degradation mechanisms of Cr coating on Zr alloy cladding under high temperature steam atmosphere are summarized, and a mathematical analysis model is established to predict the changes in coating thickness. The model is applied in the analysis of structure evolution under different conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. Diaz-Mena, J. de Prado, M. Roldan, I. Izaguirre, M. Sanchez, M. Rieth, A. Urena
Summary: The brazeability of a cupronickel alloy was evaluated as a filler alloy for high-temperature joining of tungsten to steel. The study investigated the brazing conditions and the impact of the selected filler on the joint quality using numerical software. The results showed different metallurgical interactions and diffusion phenomena between the filler alloy and the base materials at different temperatures. The study emphasized the importance of selecting a suitable filler to mitigate residual stresses in the joints.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Pengcheng Zhu, Yajie Zhao, Yan-Ru Lin, Jean Henry, Steven J. Zinkle
Summary: This study investigates the effect of heavy-ion irradiation on radiation hardening in high-purity binary alloy Fe18Cr. Nanoindentation testing and high-quality TEM imaging were conducted to extract hardness and microstructure information. The strength factor was accurately calculated based on the detailed TEM characterization of irradiated microstructures, and a refined hardening superposition method was applied to quantify the mechanical properties of ion-irradiated materials.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bin Wu, Haixia Ning, Hanzhen Zhu, Jianjun Chen, Kang Wang, Daiyu Zhang, Fu Wang, Qilong Liao
Summary: This study discusses the effects of ZrO2 and B2O3 on the phase composition and properties of SAP-based glass-ceramics. The results show that ZrO2 addition improves the formation of NZP phase while restricting the crystallization of AlPO4 phases. The correct ratios of ZrO2 and B2O3 allow only the formation of NZP phase within the SAP glass.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hwasung Yeom, Greg Johnson, Benjamin Maier, Tyler Dabney, Kumar Sridharan
Summary: Cr-Nb bilayer coatings were developed using cold spray deposition to improve the limiting operational temperature of Cr-coated Zr-alloy system. The coatings exhibited outstanding oxidation resistance at high temperatures and formed continuous intermetallic compound layers at the interfaces.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Padhraic L. Mulligan, Andrew T. Nelson, Chad M. Parish, Patrick A. Champlin, Xiang Chen, Daniel Morrall, Jason M. Harp
Summary: Environmental barrier coatings are being developed to reduce oxidation and embrittlement in Zr-based materials. Chromium nitride is a candidate for this application, but understanding its impact on irradiation-induced creep and microstructure is critical.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Dexuan Yan, Xinlei Cao, Ke Shen
Summary: This study investigated the purification mechanism of polycrystalline graphite by comparing IG-11 graphite with IG-110 nuclear grade graphite. The analysis revealed that metallic impurities in IG-11 were primarily segregated within graphite porosities, while IG-110 demonstrated a significant reduction in impurities. This research contributes to the development of innovative graphite purification techniques for greater purity and stronger oxidation resistance.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Wei Xu, Wei Peng, Lei Shi, Qi Sun
Summary: This paper investigates the oxidation and shape evolution of matrix graphite in high temperature gas-cooled reactors during air-ingress accidents. A reaction kinetics model is established and computational fluid dynamics with a dynamic mesh method is used to simulate the oxidation process. The results show that the geometric shape of graphite changes significantly with increasing flow rate, and the graphite pebbles tend to form a structure with a narrow front and wide tail.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Allison Harward, Casey Elliott, Michael Shaltry, Krista Carlson, Tae-Sic Yoo, Guy Fredrickson, Michael Patterson, Michael F. Simpson
Summary: This paper investigates the hygroscopic properties of eutectic LiCl-KCl absorbed into zeolite-4A. The study finds that water absorption and corrosion worsen with increasing salt loading. It also suggests that the salt can be stored in a non-inert atmosphere for a certain period of time.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Takaaki Koyanagi, Xunxiang Hu, Christian M. Petrie, Gyanender Singh, Caen Ang, Christian P. Deck, Weon-Ju Kim, Daejong Kim, James Braun, Yutai Katoh
Summary: This study provides critical experimental data on the effects of irradiation on the hermeticity of SiC composite cladding, finding that irradiation can cause a decrease in hermeticity and cracking, and coating the outer surface can mitigate the cracking issue.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
S. Krat, A. Prishvitsyn, Yu. Gasparyan
Summary: This study proposes a probabilistic and diffusion-based model to describe the co-deposition of multiple hydrogen isotopes with slowly grown metal layers. The model calculates the relative concentrations of different hydrogen isotopes in the co-deposited metal layers. It is found that if hydrogen isotopes have different detrapping energies, only the isotope with the highest detrapping energy shows a monotonic decrease in concentration with deposition temperature. Furthermore, the study evaluates the uncertainty of tritium concentration in the co-deposited layer based on the uncertainty in detrapping energy of tritium and deuterium, predicting a >10% tritium concentration uncertainty for a 0.01 eV difference.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tijo Vazhappilly, Arup Kumar Pathak
Summary: This study investigates the effect of Ce atom substitution in UO2 on its thermophysical properties using density functional theory. The results show that the Ce substitution levels and the oxidation state of Ce/U atoms strongly influence the band structure and specific heat capacity of the UO2 lattice. These findings provide important insights into the fuel properties of UO2 under reactor conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)