Article
Chemistry, Multidisciplinary
Quanxing Zhang, Wei Yu, Dongpei Zhang, Mengyuan Liu, Jinyao Wang, Kexin Meng, Chaohe Yang, Xin Jin, Guangyu Zhang
Summary: Cobalt carbonates and their derivatives are the most promising and cost-effective materials for energy storage, conversion, and upgrading. Morphology plays a crucial role in determining their performances, with size, shape, and electronic configuration being key factors. However, there is limited research on the morphological control of cobalt carbonates under hydrothermal and solvothermal conditions. Therefore, this review provides a detailed discussion on the synthesis, formation mechanism, and morphological control of cobalt carbonate nanosheets, wires, spheres, and cubes. The influence of experimental conditions and the possible mechanisms governing the growing processes are also thoroughly discussed. The findings of this short review will offer insights for the rational design of inexpensive metal carbonates for various energy and environmental applications.
Article
Multidisciplinary Sciences
Bui Thi Hang, Trinh Tuan Anh
Summary: This study investigated the effects of raw materials on the structures and morphologies of iron particles in iron-based rechargeable batteries, showing that changing the concentration of raw materials modified the structure and morphology of the synthesized alpha -Fe2O3 particles. The shape and size of alpha -Fe2O3 can be controlled, and the morphology and shape of the iron oxide particles significantly affected their redox reaction rate and discharge capacity. Among the synthesized materials, cubic-shaped alpha -Fe2O3 exhibited the highest discharge capacity, making it a potential candidate for application in iron-based aqueous batteries.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Junlong Liao, Cun Zhu, Zhenzhu He, Junning Zhang, Yi Zeng, Zhongze Gu
Summary: We report a versatile approach to fabricate nonspherical polystyrene nanoparticles with controlled morphologies based on kinetically controlled seed-mediated polymerization. By manipulating reaction kinetics parameters, such as monomer concentration, reactant injection rate, and reaction temperature, we can direct the monomers to polymerize on selective sites of PS seeds, resulting in nonspherical nanoparticles with various thermodynamically unfavored morphologies. The formation mechanism of these nanoparticles has been systematically investigated by monitoring seed evolution during the reaction. This method has also been successfully extended to different monomer and seed systems.
Article
Nanoscience & Nanotechnology
Yonghyeon Kim, Young Wook Lee, Seunghoon Lee, Jintaek Gong, Hee-Seung Lee, Sang Woo Han
Summary: This study reported a new strategy for the synthesis of Pd-Pt-Ag ternary alloy HNSs through a self-templating approach. By simultaneously reducing multiple metal precursors in the presence of CTAC, the morphology of HNSs can be controlled, with the size and hollowness of HNSs adjustable.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Ceramics
Jin Liu, Weiguang Yang
Summary: Anatase TiO2 samples with three different morphologies were prepared using the solvothermal method, and their properties were modified by electron beam irradiation and nitrogen doping.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yinghua Qiu, Yunpeng Wang
Summary: Facile synthesis of Co9S8 nanotubes with high sensing performance towards ethanol has been achieved. The thin-walled and rough-surfaced Co9S8 nanotubes possess large BET surface area, which facilitates the interaction with ethanol molecules. The morphology of Co9S8 nanotubes can be controlled by adjusting the preparation parameters. The Co9S8 sensor exhibits good response and stability towards ethanol at low temperature.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Cunhui Kong, Xinyue Su, Da Qing, Yingna Zhao, Jiansheng Wang, Xiongfeng Zeng
Summary: This paper investigates the effect of micro morphology on the photoelectrochemical cathodic protection performance of SrTiO3. A series of samples with controllable morphology were prepared. The results show that the flower-like microspheres (FLMs) samples exhibit better photochemical performance, with higher photocurrent density and larger negative shift in open circuit potential.
CERAMICS INTERNATIONAL
(2022)
Article
Cell Biology
Lida Kanari, Hugo Dictus, Athanassia Chalimourda, Alexis Arnaudon, Werner Van Geit, Benoit Coste, Julian Shillcock, Kathryn Hess, Henry Markram
Summary: Neuronal morphologies play a crucial role in the electrical behavior of neurons, connectomes, and brain dynamics. This paper proposes a synthesis algorithm based on a topological descriptor of neurons, allowing the rapid reconstruction of entire brain regions from a few reference cells. The synthesized morphologies exhibit statistical similarity to biological reconstructions in terms of their morpho-electrical and connectivity properties, providing a valuable opportunity to study the relationship between neuronal morphology and brain function across different spatial and temporal scales.
Article
Energy & Fuels
Beibei Feng, Chunlan Qin, Ying Shi, Lidong Zhang
Summary: Manganese oxides, especially Mn3O4 nanoplate catalyst, show promising catalytic performance in ethanol combustion with small crystal size, large surface area, exposed facets, and abundant Mn4+ and defective structure.
Article
Polymer Science
Isaac Benavides, Timothy J. Deming
Summary: We have prepared a new water-soluble, nonionic homopolypeptide poly(L-homoserine) and poly(L-homoserine) block copolymers with controllable segment lengths. The conformational preferences of poly(L-homoserine) in both the solid state and in solution have been determined. Poly(L-homoserine) is soluble in water and adopts a disordered conformation, making it a promising candidate for applications in biology as a nonionic, water-soluble homopolypeptide. Towards this goal, a poly(L-homoserine) containing a block copolypeptide has been prepared and found to self-assemble into micro- and nanoscale vesicles in water.
Article
Polymer Science
Isaac Benavides, Timothy J. Deming
Summary: We have successfully prepared a new water-soluble, nonionic homopolypeptide poly(L-homoserine), as well as poly(L- homoserine) block copolymers with controllable segment lengths. The conformational preferences of poly(L-homoserine) were determined in both the solid state and in solution. The poly(L-homoserine) showed promising potential for applications in biology due to its solubility in water and disordered conformation. To further explore its potential, a block copolypeptide containing poly(L-homoserine) was prepared and found to self-assemble into micro- and nanoscale vesicles in water.
Article
Engineering, Mechanical
Junhua Zhao, Guangbin Yang, Yujuan Zhang, Shengmao Zhang, Chunli Zhang, Chuanping Gao, Pingyu Zhang
Summary: The three different morphologies of CuO nanostructures showed excellent friction-reducing and anti-wear properties as water-based lubricant additives, and improvements in tribological properties can be achieved through technical enhancements.
Article
Chemistry, Multidisciplinary
Wenpo Luo, Abdelhafed Taleb
Summary: In this research, TiO2 with controlled morphologies were successfully prepared hydrothermally using TiO2 aggregates of different sizes. Various characterization techniques such as XRD, XPS, FEGSEM, EDS, and HRTEM were employed to study the prepared TiO2 powders. It was observed that the morphology of TiO2, whether nanobelt, nanourchin, or nanotube, depended on the synthesis conditions, while the properties of nanoparticles were influenced by the TiO2 nanoparticles aggregate used as a precursor.
Article
Chemistry, Multidisciplinary
Yanli Zhao, Xinfeng Tao, Jiaping Lin, Shaoliang Lin
Summary: A simple and robust template-free solvothermal strategy is reported to obtain azobenzene-dangled COFs. The crystallinity, specific surface area, and morphology of Azo-COFs can be controlled by changing the ratio of amine to aldehyde monomers. The reversible trans-to-cis isomerization of the dangled azobenzene units inside the pores allows for intelligent regulation of surface wettability and enhanced adsorption capacity.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Ceramics
Joanna Howis, Magdalena Nalepa, Tomasz Golofit, Maciej Spychalski, Anna Laudanska-Maj, Agnieszka Gadomska-Gajadhur
Summary: This study investigated the effect of ternary pseudo-gel systems on model mouldings as a complementary knowledge for formulating at the early stages of process design.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)