Article
Chemistry, Physical
Alessandro Donazzi, Travis A. Schmauss, Scott A. Barnett
Summary: Direct utilization of alcohols in Solid Oxide Fuel Cells (SOFCs) can improve conversion efficiency by using excess heat for internal reforming and simplify the system balance of plant. Perovskite oxide anodes, such as the STF-Ru exsolution anodes, show promising catalytic reforming activity and electrochemical activity with steam/ethanol mixtures.
JOURNAL OF POWER SOURCES
(2022)
Article
Nuclear Science & Technology
Hao Wu, Taiga Kawamura, Seong-Yun Kim
Summary: In this study, a silica-based TODGA impregnated adsorbent was prepared for selective adsorption and separation of Y(III) from the Y(III)-Sr(II) group in acid solution. Chromatography recovery of over 90% Y(III) was achieved under specific elution conditions in different adsorption systems.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Andrey Vodyashkin, Antonina Sergorodceva, Parfait Kezimana, Mariya Morozova, Elena Nikolskaya, Mariia Mollaeva, Nikita Yabbarov, Maria Sokol, Margarita Chirkina, Leonid Butusov, Alexey Timofeev
Summary: This study developed a new method for obtaining a metal-organic structure of strontium and terephthalic acid and proposed an alternative activation method for removing DMF from the pores. The ethanol-activated Sr(BDC) demonstrated potential as a drug delivery material.
DALTON TRANSACTIONS
(2023)
Article
Crystallography
Marcin Wojtyniak, Christian Rodenbuecher, Benedykt R. Jany, Grzegorz Cempura, Adam Kruk, Franciszek Krok, Krzysztof Szot
Summary: The physical and chemical properties of oxide materials are strongly affected by defect concentration, giving rise to unique electronic, optical, and dielectric properties. SrTiO3 (STO) is a promising material for various applications due to its interesting phenomena, such as a metal-to-insulator transition induced by reduction. Dislocations, which are 1-D defects, play a significant role in its electronic properties. Therefore, we investigate the process of dislocation movement, creation, and annihilation under ion thinning and electron irradiation.
Article
Chemistry, Multidisciplinary
Qibo Jia, Chuyu Wang, Jian Liu, Xiaojiao Cai, Li Zhong, Siming Chen, Ting Li, Gangqiang Yu, Li-zhu Wu, Dongping Duan
Summary: This study reveals the existence of Sr and O divacancies in rhombicuboctahedron SrTiO3 micro/nano particles and summarizes the dissociation mechanism of self-trapped excitons (STEs). The discovery of metastable STEs with ultra-low binding energy is significant. The conversion mechanism of photoinduced carriers is proposed, leading to efficient photocatalytic reactions.
Article
Chemistry, Physical
Jie Wu, Gaochao Zhao, Chengbing Pan, Kun Tao, Jie Yang, Xuebin Zhu, Peng Tong, Lihua Yin, Wenhai Song, Yuping Sun
Summary: We investigated the effect of A-site disorder on the properties of lead-free Ba1-x-ySrxCayTiO3 perovskites and found that decreasing A-site disorder leads to reduced tetragonal distortion, ferroelectric transition temperature, and the temperature of the maximum electrocaloric effect. By optimizing the A-site disorder, the highest adiabatic temperature change can be achieved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Yongpeng Cui, Lianming Zhao, Bin Li, Wenting Feng, Tonghui Cai, Xuejin Li, Huanlei Wang, Debin Kong, Zhuangjun Fan, Linjie Zhi, Zifeng Yan, Qingzhong Xue, Wei Xing
Summary: This study proposes an in situ induced deposition strategy to construct a MoS2/C hybrid material, which can effectively solve the self-stacking issue of MoS2 and improve the capacitance and cyclic stability of the potassium-ion electrode. The resulting NS-C@b-MoS2 anode exhibits high specific capacity and ultra-long cycle stability, while the assembled potassium-ion capacitor demonstrates high energy density and long lifespan.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Zeqiu Li, Eleazer L. Vivas, Chenyang Yang, Yong Jae Suh, Kuk Cho
Summary: Developing adsorbents with fast uptake rates and high adsorption capacities for both Sr2+ and Co2+ is a major challenge for treating radioactive wastewater. Layered potassium calcium phosphate (KCaP) demonstrates excellent adsorption performance and stability in removing Sr2+ and Co2+ from wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Seong-Yun Kim, Taiga Kawamura, Hao Wu
Summary: To achieve the mutual separation of yttrium(Y(III)) and strontium(Sr(II)) from acidic solution, a diglycolamic acid-grafted adsorbent (DGAA-Si adsorbent) was developed via a facile amidation reaction between diglycolic anhydride and a 3-aminopropyl-functionalized silica-gel. The adsorption performances of DGAA-Si adsorbent toward Y(III) and Sr(II) were systematically investigated, and the solid-state adsorption behavior and distribution conditions of the adsorbed Y(III) and Sr(II) were studied using particle-induced X-ray emission analysis. Moreover, the mutual separation of Y(III) and Sr(II) was successfully achieved using acid in different concentrations as an effluent solution.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Physical
Weishan Wang, Yuqin Tian, Huifang Shen, Xinya Zhang
Summary: In this paper, potassium titanate whiskers (PTW) were modified and used as a green accelerator in a phosphating bath to build super-hydrophobic phosphating conversion coatings (PCCs) on mild steel. The PCCs exhibited enhanced corrosion resistance and high near-infrared (NIR) reflectivity. Various characterization techniques were used to study the structure and properties of the PCCs. The PCCs with an optimal concentration of 0.8 g/L showed the densest structure, the largest water contact angle (153 degrees), and the highest NIR reflectivity (48%).
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Condensed Matter
A. S. Konstantinov, E. D. Linnik, A. G. Razumnaya, A. S. Mikheykin
Summary: In this study, the lattice dynamics and phase transition characteristics of BaxSr1-xTiO3 solid solution samples were investigated using Raman spectroscopy. The soft mode frequencies were found to be compositionally and temperature dependent. The behavior of the soft mode in the solid solution with x = 0.3 exhibited a temperature dependence similar to displacement-type transitions. The mechanism of titanium ion jumps changed from thermal over the potential barrier to tunneling under the barrier with increasing strontium concentration.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Engineering, Environmental
Yan-Ling Guo, Hai-Yan Sun, Xi Zeng, Tian-Tian Lv, Yue-Xin Yao, Ting-Hui Zhuang, Mei-Ling Feng, Xiao-Ying Huang
Summary: Sr-90 is a dangerous artificial radionuclide that is difficult to remove from complex aqueous environments. This study focused on the efficient removal of Sr2+ ions using potassium phosphatoantimonate (1D-K2SbPO6), which showed excellent adsorption capacity and selectivity for Sr2+ ions. The mechanism of Sr2+ removal was found to be ion exchange between Sr2+ and easily exchangeable K+ ions in K2SbPO6. This work provides a potential solution for radionuclide remediation using antimonate(V)-based ion exchange materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
S. A. Gridnev, I. I. Popov
Summary: The temperature dependences of the complex permittivity components ε' and ε" for Ba1- (x) Sr (x) TiO3 (0.1≤x≤0.7) solid solution obtained by two-stage ceramic technology were investigated. Both components ε' and ε" pass through the pronounced maxima near the Curie point. A growth of the ε' maximum with an increase in the concentration of Sr atoms is associated with a reduction in the average grain size and an increase in the volume fraction of the intergranular layer having a lower ε' compared to a grain. The increase in the diffusion of the phase transition with the concentration of Sr atoms is due to the greater heterogeneity of the solid solution. Based on the dielectric data, temperature dependences of the local order parameter were plotted.
Article
Engineering, Environmental
Botuo Zheng, Jiajia Yin, Lingdan Zhu, Bingnan Zhou, Hang Shen, David Harbottle, Timothy N. Hunter, Yu Sheng, Deqin Zhu, Huagui Zhang
Summary: This study developed an economical biomaterial-based hydrogel adsorbent with excellent Sr2+ adsorption performance achieved by ion-imprinting and abundant thiol groups. The hydrogel demonstrated superior Sr(2+) adsorption capacity and selectivity, as well as high elasticity and self-recovery properties. It could be adapted as a membrane for vacuum filtration, effectively removing Sr2+ from contaminated water at high efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Xingsheng Liu, Shengyuan Zhao, Wan Xu, Huijuan Zhang, Siyuan Lu, Zhenbin Chen, Fangfang Niu, Gang Wu
Summary: A chitosan-comodified surface-grafted thermosensitive ion-imprinted composite membrane (CS-Re-TIICM) was developed for the separation and purification of rhenium from secondary resources. Results showed that CS-Re-TIICM possessed temperature-responsive recognition sites and an adjustable imprinting cavity, enabling selective separation and purification of ReO4 (-). When applied to the secondary leaching solution of high-temperature alloys, the purity of Re increased from 35.41% to 65.10% after one adsorption/desorption cycle.
ACS APPLIED POLYMER MATERIALS
(2023)
