Article
Thermodynamics
Eugenya V. Makoveeva, Dmitri V. Alexandrov
Summary: This study focuses on the concluding stage of a phase transformation and examines the particle coagulation and Ostwald ripening processes. An exact solution to the non-stationary integrodifferential kinetic equation is derived, providing relationships between the particle-volume distribution function, time, number of particles, volume of the condensed phase, average particle radius, and liquid supersaturation. The study also compares the particle-volume distribution function and average radius of particles in cases of constant and averaged collision-frequency functions for different coagulation mechanisms, such as shear coagulation and coagulation under gravity.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Applied
Woojin Park, Joonwoo Park, Sohyeon Im, Seung Jun Choi
Summary: The effects of hydrocolloid gums on the Ostwald ripening of emulsions stabilized with Brij or Tween surfactants were studied. Gums generally decreased the stability to Ostwald ripening, except for xanthan in Tween-stabilized emulsions. The addition of gums improved the stability of emulsions with a modified oil composition.
Article
Chemistry, Applied
Yunhan Zhang, Meisheng Cui, Hao Wang, Zheng Zhao, Liangshi Wang, Yongke Hou
Summary: In this study, cerium zirconium solid solution was prepared by a coprecipitation-hydrothermal method, and it was found that the sample with an ammonia concentration of 0.8 mol/L had the highest specific surface area, while the sample with an ammonia concentration of 0.4 mol/L exhibited the best redox activity and the lowest reduction temperature. Increasing the ammonia concentration in the hydrothermal treatment was shown to be beneficial for the thermal stability and redox performance of cerium zirconium solid solution.
JOURNAL OF RARE EARTHS
(2021)
Article
Chemistry, Physical
O. C. Pore, A. V. Fulari, C. D. Chavare, D. S. Sawant, S. S. Patil, R. V. Shejwal, V. J. Fulari, G. M. Lohar
Summary: NiCo2O4 microflowers were prepared via hydrothermal method and the effect of precursor concentration on morphology and supercapacitor performance was investigated. XRD, FTIR, and XPS analysis confirmed the formation of NiCo2O4. FE-SEM observation showed the formation of microflower-like morphology. The optimized NiCo2O4 electrode with a molar ratio of Ni:Co = 1:2 exhibited a specific surface area of 147.3 m2 g-1. The supercapacitor study revealed that it achieved a maximum specific capacitance of 747.4 F g-1 at 5 mV s-1, with the highest energy density of 9.27 Wh kg-1 (@55.55 W kg-1) and 82.32% capacity retention over 5000 cycles.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Zhemin Zou, Jie Wang, Jun Qu, Panfei Dong, Zhigao Xu
Summary: In this study, Zn-Al LDH precursor was successfully synthesized and demonstrated promising adsorption capacity for rare earth elements (REEs) recovery. The adsorbed REEs on Zn-Al LDH were hard to be desorbed, making it a potentially valuable adsorbent for practical application in REEs recovery.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Review
Chemistry, Applied
Qian Zhang, Zhiqing Gao, Xiaomeng Shi, Chao Zhang, Kang Liu, Jun Zhang, Liang Zhou, Chunjie Ma, Yaping Du
Summary: Rare earth elements play a crucial role in solid-state lithium-ion-conducting materials and have great application potential. They act differently in various systems and also show effects as dopants. The crystal structure and property of these materials are influenced by factors such as valence, coordination, and size.
JOURNAL OF RARE EARTHS
(2021)
Article
Engineering, Chemical
Xindi Guan, Ping Li, Wenke Liu, Qingqing Chang, Yunwu Han, Jikai Zhang, Hailin Zhang, Qian Li, Shili Zheng
Summary: This study systematically investigated the adsorption behavior and mechanism of yttrium ions onto ion-adsorption type rare earths ore as adsorbents. The results showed that the adsorption process was a homogeneous chemical adsorption process, and yttrium ions were adsorbed onto the ore surface via Si-O-Y bond.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Applied
Wenjie Zhang, Dongxia Feng, Xian Xie, Xiong Tong, Yunpeng Du, Yang Cao
Summary: Solvent extraction is a crucial method for rare earth extraction and separation. In this study, the unsaponification extraction of light rare earth ions in a hydrochloric acid medium by the HDEHPP350 system was investigated. The results show that HDEHP-P350 has a good separation effect for light rare earths and is easy to strip. The structure of the extracted complex is determined through analysis and discussion.
JOURNAL OF RARE EARTHS
(2022)
Article
Engineering, Electrical & Electronic
Vidyadevi A. Jundale, Abhijit A. Yadav
Summary: CoFe2O4 thin films with various solution concentrations were prepared and their physical and electrochemical properties were studied. The results showed that CoFe2O4 thin films have high absorption coefficient, low electrical resistivity, and good electrochemical performance. Therefore, CoFe2O4 thin films are potential electrode materials for energy storage applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Sonam Rani, Love Bansal, Manushree Tanwar, Ravi Bhatia, Rajesh Kumar, I. Sameera
Summary: A method to tune the electrochemical energy storage properties of molybdenum disulfide (MoS2) nanoflowers has been explored. The MoS2 nanoflowers were synthesized through a hydrothermal route using ammonium heptamolybdate tetrahydrate (AHM) and thiourea (TU) as precursors. The petal density, thickness, and porosity of the nanoflowers were found to vary with the precursor weight ratio. By adjusting the electrolyte concentration to 1 M Na2SO4, the electrochemical properties of the MoS2 nanoflowers were improved. NaClO4 electrolyte was found to provide a larger potential window compared to Na2SO4, making it a suitable electrolyte for high energy density solid-state supercapacitor applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Physical
Jiamin Fei, Shiqiang Zhao, Xiaoxu Bo, Furong Xie, Guanghui Li, Ebrahim-Alkhalil M. A. Ahmed, Qingcheng Zhang, Huile Jin, Zhiqun Lin
Summary: Hollow structuring is an effective strategy to enhance the cycling stability of electrodes for rechargeable batteries, and a novel approach called SPTOR (solid precursor transition and Ostwald ripening) has been developed to craft MnCO3 submicron hollow spindles encapsulated in a reduced graphene oxide matrix. The resulting MnCO3 SMHSs/rGO exhibits an ultrahigh lithium storage capacity and ultralong lifespan due to superior reaction kinetics, exceptional interfacial and capacitive lithium storage capability, and robust electrode pulverization inhibition efficacy. The SPTOR approach may have great potential for the synthesis of various hollow functional materials.
Article
Geosciences, Multidisciplinary
Andrew C. Strzelecki, Artas Migdisov, Hakim Boukhalfa, Kirsten Sauer, Kathryn G. McIntosh, Robert P. Currier, Anthony E. Williams-Jones, Xiaofeng Guo
Summary: A mechanism has been discovered that could lead to the enrichment of medium to heavy rare earth elements in hydrothermal systems. The study shows that a precursor fluoride mineral can fractionate rare earth elements, making it a potential exploration target for deposits rich in these elements.
Article
Materials Science, Multidisciplinary
D. Akcan
Summary: ZnO and ZnCoO nanoparticles were synthesized by hydrothermal route using different Cobalt precursors and concentrations, with cobalt acetate tetrahydrate identified as the most suitable precursor. The effects of cobalt doping on the structure and properties of the nanoparticles were investigated, showing that cobalt doping significantly reduces the concentration of point defects in the nanoparticles.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
Jamal Ait Brahim, Amal Merroune, Hamid Mazouz, Redouane Beniazza
Summary: The recovery of high-added value products from phosphate byproducts is of great economic and environmental importance. This study focuses on the enrichment of rare earth elements (REEs) in the calcium fluoride phase obtained from phosphoric acid sludge using hydrofluoric acid. The conversion rate and enrichment factor of REEs were evaluated, and it was found that the conversion rate reached over 97% with 100% transfer of REEs to the calcium fluoride phase. The REEs were selectively enriched in calcium fluoride with an enrichment factor of over 42%.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Asmaa Al-Rasheedi, N. H. Alonizan, Akhlur Rahman Ansari, A. M. Abdel-Daiem, M. S. Aida
Summary: In this study, ZnO nanorods were successfully grown on glass substrate using the hydrothermal method, and the effect of zinc precursor salt concentration on nanorod properties was investigated. XRD, SEM, UV-visible optical transmittance and PL were used to analyze the structure and properties of the nanorods. The results showed that increasing the salt solution concentration led to the formation of ZnO nanorods with larger diameter and denser array.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xue Feng, Li-Min Zhao, Xu-Jun Mi, Guo-Jie Huang, Hao-Feng Xie, Xiang-Qian Yin, Li-Jun Peng, Zhen Yang
Summary: By designing a novel interface structure incorporating aminated carbon nanotubes, the interfacial strength and interphase region strength between TiNi wires and shape memory epoxy have been enhanced. The interfacial shear strength initially increases with the rise in CNT content, but then experiences a dramatic drop.
Article
Chemistry, Multidisciplinary
Jie Yue, Guochang Wen, Guina Ren, Shaowang Tang, Bo Ge, Limin Zhao, Xin Shao
Summary: This research focused on constructing a 3D cross-linked network polyurethane (PU) foam loaded with bismuth oxybromide (BiOBr) catalyst at the raw material level, demonstrating excellent superhydrophobic stability and high oil absorption capacity. The presence of BiOBr catalyst in the PU foam played a crucial role in degrading water-soluble contaminants under visible light irradiation, with remarkable high efficiency and recyclability in degradation.
Article
Biochemistry & Molecular Biology
Lijuan Liu, Kunhao Qin, Shuang Yin, Xiaodan Zheng, Hongmei Li, Hui Yan, Pengfei Song, Xiuling Ji, Qi Zhang, Yunlin Wei, Limin Zhao
Summary: In this study, the anaerobic bacterium Porphyromonas gingivalis was utilized for the first time to synthesize carbon dots, resulting in Pg-CDs with strong fluorescence and high stability capable of functioning as both an Fe3+ sensor and intracellular imaging agent. The detection limit for Fe3+ was as low as 1.85 μm, and the Pg-CDs showed high biocompatibility, making them an excellent candidate for biosensors.
PHOTOCHEMISTRY AND PHOTOBIOLOGY
(2021)
Article
Chemistry, Analytical
Jinmin Wang, Xianglong Qu, Limin Zhao, Bing Yan
Summary: COF nanosheets, a new member in 2D nanomaterials, show potential in drug detection with high sensitivity and selectivity. Interaction with drugs promotes the preparation of COF nanosheets and their application in drug detection.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Haozhang Xu, Shoufei Wang, Min Wang, Bo Ge, Guina Ren, Wenzhi Li, Limin Zhao
Summary: This study designed a superhydrophobic cotton material that degrades water-soluble pollutants under light response and selectively removes organic solvents, showing excellent cyclic degradation ability. The material's water contact angle reached 162°, allowing rapid spreading of toluene, and it maintained high degradation efficiency under actual working conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Electrochemistry
Caiping Xu, Chuanyu Jin, Xiyue Wang, Xin Gong, Jie Yin, Limin Zhao, Xipeng Pu, Wenzhi Li
Summary: Hierarchical V2O5/molten salt cathodes with binder-free MgO are designed to improve the conductivity of thermal batteries. By optimizing the composition and structure, high specific capacity and energy can be achieved under certain operating conditions, providing a new strategy for solid-state batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Xiang Liang, Zejuan Ni, Limin Zhao, Bo Ge, Hui Zhao, Wenzhi Li
Summary: The morphology of covalent organic frameworks (COFs) plays a crucial role in determining their properties and applications, as demonstrated by the synthesis of PMDA-TAPB COFs fibers with AA stacking models. These COFs exhibit abundant active sites and high surface area, leading to the development of their fluorescence and electrochemical sensing properties. Additionally, the ACQ mechanism caused by Fe3+ and the logical relationship between PMDA-TAPB fluorescence nature and system factors were illustrated in this work.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Yinghua Jia, Jinmin Wang, Limin Zhao, Bing Yan
Summary: A covalent organic framework with remarkable luminescence properties, named TpDq, was synthesized and used as a fluorescent probe for detecting glutaraldehyde. The probe showed advantages of reusability, high pH stability, fast response time, and low detection limit.
Article
Chemistry, Multidisciplinary
Bo Ge, Baobao Han, Jing Lv, Limin Zhao, Yibin Yin, Guina Ren, Zhaozhu Zhang
Summary: A multifunctional device was designed to tackle water pollution and the lack of clean water, using superhydrophobic fabric as the floating layer. The device achieved organic solvent recovery and oil/water separation through superhydrophobicity and superoleophilicity, as well as photodegradation of soluble pollutants with the presence of Bi2WO6. The assembled photothermal device also showed high efficiency in solar steam generation for treating sewage.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Engineering, Chemical
Rui-Qi Zhang, Ang Ma, Xiang Liang, Li-Min Zhao, Hui Zhao, Zhong-Yong Yuan
Summary: The Co@NC electrocatalyst, synthesized in this study, demonstrates improved electrocatalytic activity and durability for oxygen reduction reaction and can be applied in fields such as electrolysis and Zn-air batteries.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Yibin Yin, Shihao Yan, Zejuan Ni, Chuanyu Jin, Limin Zhao
Summary: The research successfully combined biomass-derived carbon from vegetable sponge with Mn3O4, showing that the composite VSCs/Mn3O4 exhibited promising performance in supercapacitors through characterization and testing.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Analytical
Jinmin Wang, Limin Zhao, Bing Yan
Summary: Developing facile and reliable analytical technologies for disease diagnosis is crucial but challenging. In this study, a dual channel-driven fluorescence sensor was designed for simultaneous analysis of HVA and Al3+, offering promising prospects for accurate and non-invasive disease diagnosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Chemical
Cai-Yue Wang, Meng-Qi Gao, Cheng-Cai Zhao, Li-Min Zhao, Hui Zhao
Summary: This study successfully developed an efficient electrocatalyst for both oxygen reduction reaction and oxygen evolution reaction, which exhibits excellent catalytic activity and stability comparable to state-of-the-art Pt/C catalysts. Moreover, the study highlights the application of metal phosphonate hybrids in fabricating metal phosphides with tunable structures, which is of great significance in the energy conversion field.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Analytical
Limin Zhao, Xiang Liang, Zejuan Ni, Hui Zhao, Bo Ge, Wenzhi Li
Summary: Covalent organic frameworks (COFs) have received much attention recently due to their excellent molecule recognition and chemical sensing capabilities. However, the utilization of COFs-based sensors is hindered by processing and forming difficulties. In this study, a composite material is designed by combining polyacrylamide (PAM) as a matrix and TFP-PPDA COF as reinforcement, resulting in a PAM/TFP-PPDA composite nanofibrous membrane (NFM) prepared using electrospinning technology. The PAM/TFP-PPDA composite demonstrates effective fluorescence sensing of volatile organic compounds (VOCs) and specifically detects primary aliphatic amine through a fluorescence enhances (turn-on) effect.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Multidisciplinary
Jinmin Wang, Xin Xu, Limin Zhao, Bing Yan
Summary: This study explores the incorporation of polyoxometalate into covalent organic frameworks to create a functional composite material with outstanding luminescence properties, broadening the sensing application of COF. It suggests a new direction for utilizing POM-functionalized COF materials as efficient chemosensors to monitor trace amounts of important analytes in environmental and biological systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
