Article
Materials Science, Coatings & Films
Sayyed Ahad Sajjadi, Naghi Parvini Ahmadi, Sasan Yazdani
Summary: The research examined the effect of low-temperature calcination on sol-gel derived amorphous alumina coatings, with coatings calcined at 300 degrees C exhibiting significantly improved corrosion resistance compared to those calcined at 500 degrees C.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
F. Khalesi, M. Farhadian, K. Raeissi
Summary: In this work, post-treatment sol-gel methods using acidic and alkaline TEOS solutions were applied to refine the porous network of ZrO2 coating and improve corrosion resistance. The alkaline TEOS solution resulted in the formation of a dense SiO2 interlayer and narrowed pores in the coating, providing the best barrier performance. On the other hand, the acidic TEOS solution mainly formed thin SiO2 layers on the ZrO2 coating surface, leading to poor barrier performance due to electrostatic repulsion forces.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Juan Wang, Fengcang Ma, Lin Song, Ping Liu, Wei Li, Ke Zhang, Xiaohong Chen
Summary: Benzotriazole (BTA) inhibitor was coated in mesoporous silica nanoparticles (MSNs) using tannic acid complex (TAC) deposition, forming a pH control release valve for sensitive feedback and control of BTA release. By adding MSNs-BTA@TAC to an organic-inorganic composite coating, a self-healing coating with pH feedback sensitivity and corrosion compensation function was prepared. The results showed significant self-healing effect of the coating after soaking in simulated body fluids, with a increase in low-frequency impedance modulus.
Article
Engineering, Chemical
Akira Miwano, Takehiro Yonezawa, Noriko Yamauchi, Kouichi Nakashima, Yoshio Kobayashi
Summary: The study suggests a new coating technique for thermistors using zirconia, which shows excellent chemical resistance and electrical insulation properties. Pre-silica coating on the substrate can improve the adhesion of ZrO2 films.
Article
Chemistry, Multidisciplinary
Julio Correa, Jairo Murillo, Javier Jurado, Lina Garcia, Liliana Tirado, Hernan Colorado, Jesus Evelio Diosa, Alessandro Chiasera, Clara Goyes
Summary: This study focuses on the analysis of the crystallization process and the optical responses of Al2O3/glass-ceramic coatings on a brass substrate after laser surface modification. The study found that increasing irradiation power enhances the resolution of the photoluminescence response, and X-ray diffraction patterns show the presence of different crystalline phases in the irradiated samples.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Multidisciplinary
K. S. Duran, C. A. Hernandez-Barrios, A. E. Coy, F. Viejo
Summary: Fluoride-based pretreatment of the WE54 magnesium alloy can improve the corrosion resistance of the sol-gel coatings and alloy, but long pretreatment times may lead to structural defects that accelerate corrosive attack in saline environments.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
K. S. Duran, N. Hernandez, L. M. Rueda, C. A. Hernandez-Barrios, A. E. Coy, F. Viejo
Summary: This study developed multilayer barrier-bioactive coatings to enhance the corrosion resistance of magnesium alloy and promote the growth of apatite-like phases. However, an increase in salt content led to the formation of porous coatings, affecting the corrosion resistance of magnesium alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Physical
V. Encinas-Sanchez, A. Macias-Garcia, M. T. de Miguel, F. J. Perez, J. M. Rodriguez-Rego
Summary: The protective behavior of ZrO2-3%molY(2)O(3) sol-gel coatings on 9Cr-1Mo P91 steel was evaluated using corrosion monitoring sensors. The results showed that the coating effectively limited the transport of ions and slowed down the corrosive process, reducing the corrosion rate of the steel. The proposed sol-gel coatings are a viable option to mitigate corrosion in concentrated solar power plants.
Article
Biophysics
Jikun Yang, Meng Wang, Xiaoyang Li, ZhiYong Dong, XiaoDong Zhou, JunWei Luan, Ya Guo, YuanLiang Xue
Summary: Sol-Gel-based reaction mixture sols have been long used to fabricate dense and uniform bioactive coatings with superior mechanical stability over metallic implants. The study aims to develop a physical barrier over metal implants in form of bioinert Zirconia coatings, phase-stabilized using Dysprosium. The stable crack-free coatings fabricated at 2000 rpm for 3 s were found to be optimal for corrosion resistance behavior of steel implants.
JOURNAL OF APPLIED BIOMATERIALS & FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Nor Atikah Aina Mohamad Azran, Tuan Sherwyn Hamidon, Siti Shafiqah Azahar, M. Hazwan Hussin
Summary: The present study aimed to evaluate the corrosion resistance performance of mulberry fruit extracts-doped hybrid sol-gel coatings on low carbon steel in NaC1 electrolyte. The results showed that the corrosion inhibition efficiency of the coatings doped with mulberry ethanol extract and water extract were 85.57% and 81.37%, respectively. Fourier transform infrared spectroscopy and scanning electron microscopy confirmed the relationship between the composition and microstructure of the coatings with the corrosion resistance performance.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Jiao Li, Huanhuan Bai, Zhiyuan Feng
Summary: Magnesium (Mg) alloys, as the lightest structural materials, have significant applications in weight reduction, aerospace, military equipment, energy saving, and emission reduction. However, the poor corrosion resistance of Mg alloys limits their wide usage. The silane-based sol-gel coating technology has been widely used to improve corrosion resistance due to its simplicity, customizable composition and structure, and excellent performance. To enhance the protection against corrosion, the modification of sol-gel coatings has become a hot research topic. This review discusses the modification methods of silane-based sol-gels on Mg alloy surfaces, including bare sol-gel, nanoparticles, corrosion inhibitors, and sol-gel-based composite coatings, and explores their application, development, and research strategies.
Article
Materials Science, Ceramics
Mengmeng Yang, Tao Wang, Meng Wu
Summary: In this study, a laser ablation-resistant composite coating made of ZrB2 and SiC was prepared, showing excellent ablation resistance against high-intensity continuous laser irradiation and providing effective protection for aluminum alloy materials.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
E. P. Grishina, N. O. Kudryakova, L. M. Ramenskaya
Summary: This paper investigates the formation of thin alumina films on low carbon steel using boehmite gel prepared by the sol-gel method, and examines the effect of acid peptizers on the corrosion behavior of steel in the studied colloidal systems.
Article
Materials Science, Ceramics
Jialin Yang, Aiying Chen, Fang Liu, Lijian Gu, Xiaofeng Xie, Zhiying Ding
Summary: The thermal stability, hydrophobicity, and corrosion resistance of the PDMS-ZrO2 coatings are substantially improved by introducing ZrO2 nanoparticles. Depending on the ZrO2 content, the PDMS-ZrO2 hybrids exhibit superior corrosion resistance.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Shubham Vishvakarma, Rajesh Kannan, Nitesh Vashishtha, Arendra Pal Singh
Summary: In this study, a hybrid sol-gel coating was applied to bearing steel using the dip-coating method to achieve a crack-free surface coating suitable for bearing applications. The electrical resistance of the coating was found to be appropriate, and the thermodynamically stable hybrid sol-gel coating surface was proposed for electrical insulation coating.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2021)
Article
Optics
Haihao Fu, Chao Liu, Zao Yi, Xinping Song, Xianli Li, Yanshu Zeng, Jianxin Wang, Jingwei Lv, Lin Yang, Paul K. Chu
Summary: This paper presents a new optimization method and demonstrates it using a LaSF09 high refractive index ring in the central pore. The performance parameters of PCFs at 1.55μm, such as effective index difference, dispersion, effective mode area, nonlinear coefficient, numerical aperture (NA), OAM purity, walk-off length, and confinement loss, are analyzed. The validity and potential of the optimization method for the design and optimization of PCFs are confirmed through verification using a conventional PCF capable of transmitting OAM modes.
JOURNAL OF OPTICS-INDIA
(2023)
Article
Biotechnology & Applied Microbiology
Chengbiao Ding, Leying Ni, Qi Liu, Chenxu Zhou, Guomin Wang, Paul K. Chu, Zhengwei Wu
Summary: Inspired by the similarity between rheumatoid arthritis fibroblast-like synoviocytes (RA-FLS) and cancer cells, this study systematically and thoroughly investigates the therapeutic effects of cold air plasma (CAP) on RA. The results demonstrate that CAP with the proper dosage significantly alleviates symptoms and eliminates the root cause by triggering the self-antioxidant capability of the surrounding tissue. The molecular and cellular mechanism reveals that the spontaneous reactive oxygen species (ROS) cascade induces the mitochondrial apoptosis pathway on RA-FLS. This study unveils a new strategy for targeted treatment of RA and provides the theoretical foundation for future development of plasma medicine.
BIOENGINEERING & TRANSLATIONAL MEDICINE
(2023)
Article
Optics
Lin Yang, Chunjie Hu, YuYang Zhao, Zao Yi, Qiang Liu, Chao Liu, Jingwei Lv, Paul K. Chu
Summary: In this study, a photonic crystal fiber (PCF) temperature sensor based on surface plasmon resonance with dual embedded silver wires was designed and investigated. The sensor showed high temperature sensitivity and a wide temperature sensing range.
JOURNAL OF OPTICS-INDIA
(2023)
Article
Materials Science, Multidisciplinary
Qin Gao, Jiangshun Huang, Juan Gao, Xueli Geng, Yuhang Ji, Haoze Li, Guoxing Wang, Bo Liang, Mei Wang, Zhisong Xiao, Ying Zhu, Paul K. Chu, Anping Huang
Summary: In this study, a functionalized honeycomb-like synaptic memristor (HLSM) was successfully fabricated, and the synaptic properties, such as short-term and long-term plasticity, were observed and controlled without gate voltage regulation. An artificial neural network (ANN) based on the potentiating/depressing characteristics showed an improved recognition rate from 54.2% to 91.8% simply by adjusting the input frequency.
MATERIALS TODAY PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
De Gao, Shuzhen Deng, Xiaoyan Chen, Yingxi Zhang, Tuan Lv, Yang He, Feng Zhou, Wen Zhang, Paul K. Chu, Kaifu Huo
Summary: A mixed ion/electron conductive Li3N-Mo protective interphase is designed and demonstrated to stabilize the Li-electrolyte interface for a dendrite-free and ultrahigh-current-density metallic Li anode.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Kai Zheng, Jiaxiang Bai, Wanling Chen, Yaozeng Xu, Huilin Yang, Wei Li, Penghui Li, Liping Tong, Huaiyu Wang, Paul K. Chu, Dechun Geng
Summary: A multifunctional therapeutic nanoplatform is designed to promote fracture healing under osteoporotic conditions. This nanoplatform, consisting of poly (lactic-co-glycolic acid) (PLGA) functionalized with alendronate (ALE) and black phosphorus nanosheets (BPs), encapsulated melatonin (MT) molecules, and named BPs/MT@PLGA-ALE nanospheres, combines the benefits of photothermal effects, suppression of osteoclastogenesis, and promotion of osteogenesis. The inclusion of ALE also enhances the bone-targeting capacity of the nanoplatform, resulting in improved therapeutic effects. This study reveals a promising strategy to treat osteoporotic fracture and expands the applications of nanomaterials in the biomedical field.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Xiaolin Zhang, Qingdong Ruan, Liangliang Liu, Dan Li, Yue Xu, Yinchuan Wang, Jinyuan Liu, Chao Huang, Fangyu Xiong, Bin Wang, Paul K. Chu
Summary: Due to their good safety, low cost, environmentally friendliness, and relatively high energy density, aqueous zinc-ion batteries (ZIBs) are considered as promising alternatives to lithium-ion batteries. However, the zinc metal anode in aqueous ZIBs is prone to dendrite growth and side reactions. In this study, an ultrathin carbon coating is applied on the zinc metal anode to suppress dendrite growth and alleviate side reactions. The modified zinc electrode shows a long cycling life and improved rate performance and cycling stability compared to bare zinc electrode.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Analytical
Zanling Huang, Shuqi Zhu, Abebe Reda Woldu, Wenhua Gao, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu
Summary: This study demonstrates a bimetallic ion co-catalyzed electrochemical glucose detection by introducing Co(II) and Cu(II) into an alkaline solution. By using nitrogen-doped carbon nanotubes loaded on carbon cloth as the working electrode, the system achieves high sensitivity, low detection limit, good selectivity, and stability. Through systematic electrochemical and structural analysis, the mechanism of Co(II) and Cu(II) co-catalysis in glucose detection is elucidated.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Fengjuan Miao, Yue Han, Pengbo Tian, Bairui Tao, Yu Zang, Paul K. Chu
Summary: This paper proposes an integrated humid temperature phosgene (HTLC) sensor based on passive RFID technology for measuring multi-dimensional environmental information during the planting of agricultural products. The sensor operates stably at various conditions and has the advantages of low cost, fast response, good repeatability, and good stability. It can collect and display parameter information of the crop growth environment in multiple dimensions, making the monitoring and management more accurate and intelligent, and helping to improve crop yield.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Applied
Zanling Huang, Shuqi Zhu, Yuan Duan, Chaoran Pi, Xuming Zhang, Abebe Reda Woldu, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu, Xiangdong Yao
Summary: In this study, it was found that Ni sites act as a host to attract Fe(III) to form Fe(Ni)(III) binary centers, which promote the oxygen evolution reaction (OER) activity and stability by cyclical formation of intermediates. Additionally, other ions can also catalyze the OER process on different electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Materials Science, Multidisciplinary
Jie He, Jianxin Wang, Lin Yang, Jingwei Lv, Wei Liu, Qiang Liu, Paul K. K. Chu, Chao Liu
Summary: Driven by the rapid development of fiber optic sensing technology, photonic crystal fiber (PCF) sensors based on surface plasmon resonance (SPR) have gained significant attention. However, they have limitations in detection range and complex coating processes. In this study, a wide-range SPR sensor is designed using a ring-core PCF filled with plasmonic materials. Numerical analysis shows that the PCF-SPR sensor exhibits high sensitivity and resolution, outperforming conventional solid-core PCF-SPR sensors for biochemical sensing applications.
Article
Materials Science, Multidisciplinary
Callum Stewart, Babak Mehrjou, Hui Huang, Yunxin Long, Kyler Chow, Tsz Wai Kok, Paul K. Chu, Linxian Li
Summary: Revolutionizing the field of surface and interface science, silicone-based organogel LIS with silver nanoparticles (Ag NP) shows excellent potential for various biological, food, or cosmetic applications. By investigating its physicochemical properties, omniphobic dewetting behavior, and biocompatibility, we provide a scalable methodology for producing multifunctional LIS, which can be utilized in the food packaging, cosmetic, and biological industries.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Cheng Wang, Xiuli Li, Hao Song, Paul K. Chu, Kaifu Huo
Summary: Researchers have successfully prepared 2D MoN/MoC nanosheets using a controllable method with MoS2 as the precursor. They found that the pseudocapacitance of the nanosheets originates from the reversible reaction between Mo-N sites and H+ in the acidic electrolyte. This study provides new insights into the development of high-performance 2D heterostructured materials for superior pseudocapacitive storage.
ADVANCED FUNCTIONAL MATERIALS
(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)