Article
Chemistry, Inorganic & Nuclear
Shweta Manchwari, Jaya Khatter, R. P. Chauhan
Summary: This study focuses on the synthesis of TiO2/CdS nanocomposites with different concentrations of precursors and their characterization using various techniques. The results show that TiO2/CdS nanocomposites exhibit excellent photocatalytic performance in the visible range compared to pure TiO2, and they have better degradation efficiency for methylene blue dye compared to rhodamine B dye. The optimum photocatalytic performance is achieved with a 1:1 M ratio of cadmium and sulphur precursors.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Sohel Das, Vineeta Singh, Subhankar Paul
Summary: A conjugate of nano-graphene oxide (GO) and titanium dioxide nanoparticle (nTiO(2)) was proposed for the photocatalytic degradation of toxic azo dyes. The optimized weight ratio of 1:5 between GO and nTiO(2) showed the highest degradation efficiency. The nanoconjugate exhibited high degradation efficiency for Congo red (CR) and Methylene blue (MB), and the photocatalyst could be reused for multiple cycles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Lei Yu, Wenlong Xu, Huie Liu, Yan Bao
Summary: “Photocatalytic degradation technology is considered promising for treating dye wastewater. In this study, titanium dioxide-reduced graphene oxide composites were used to effectively degrade various dyes in water, showing excellent degradation performance and reusability.”
Article
Environmental Sciences
Shiben Liu, Xiaohui Jiang, Geoffrey I. N. Waterhouse, Zhi-Ming Zhang, Liang-min Yu
Summary: The study prepared polypyrrole/titanium oxide/reduced graphene oxide (PTi/r-GO) electrodes for the photoelectrocatalytic degradation of methyl orange (MO) under visible light, achieving a high removal efficiency of 93% in 50 minutes and demonstrating excellent activity and stability in the treatment of hazardous organic compounds in wastewater. The combination of electrochemical and photocatalytic oxidation processes was found to be the key to the superior performance of the PTi/r-GO electrode under PEC conditions.
Article
Chemistry, Physical
Jaroslaw Serafin, Ewelina Kusiak-Nejman, Agnieszka Wanag, Antoni W. Morawski, Jordi Llorca
Summary: A mixture of titanium dioxide and reduced graphene oxide was tested in the photoproduction of hydrogen using UV light in a gas phase water-ethanol combination. The addition of reduced graphene oxide enhanced the photocatalytic activity, with the best catalyst being a TiO2-rGO composite.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Engineering, Environmental
Sidra Bibi, Awais Ahmad, Mohsin Ali Raza Anjum, Abdul Haleem, Muhammad Siddiq, Syed Sakhawat Shah, Abdullah Al Kahtani
Summary: The reduced graphene oxide-based iron oxide modified titania composite exhibited excellent photocatalytic performance for the degradation of malachite green and methylene blue under visible light, showing great potential for visible light-driven photocatalytic degradation processes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Hui Ning, Xiang Fei, Zhonghao Tan, Wenhang Wang, Zhongxue Yang, Mingbo Wu
Summary: The use of renewable electricity as a catalyst for carbon dioxide reduction shows promise for CO2 utilization, but the lack of efficient catalysts limits its industrial applications. In this study, ultrathin indium sulfide nanosheets were synthesized and combined with reduced graphene oxide to create a composite material with improved catalytic properties for CO2 electroreduction.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Praveen Kumar Gopi, Ganesh Kesavan, Shen-Ming Chen, Chandan Hunsur Ravikumar
Summary: In this study, CdS QDs were successfully synthesized and anchored on rGO nanosheets via a simple sonication method to enhance their electron charge transfer properties. The composite was characterized using various analytical techniques and showed a well-dispersed morphology. With the synergistic effect between rGO and CdS QDs, the composite exhibited superior electrochemical response for the detection of MTZ, with wide linear range and low detection limit. Additionally, the proposed electrode demonstrated satisfactory recovery results in milk samples.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Martina Milani, Michele Mazzanti, Stefano Caramori, Graziano Di Carmine, Giuliana Magnacca, Alessandra Molinari
Summary: A series of composite CdS/TiO2 powders were synthesized by nucleating TiO2 on CdS nanoseeds. This composite exhibited the appropriate band edge position for photocatalytic redox reactions: visible light irradiation of CdS facilitated electron injection into TiO2, thereby extending charge lifetimes. The obtained electrons were utilized for the efficient photoreduction of 4-nitrobenzaldehyde to 4-aminobenzaldehyde, as confirmed by H-1 NMR and ESI-MS positive ion mode. Simultaneously, sacrificial oxidation of 2-propanol occurred, serving as the proton source. Characterization techniques highlighted the crucial factors driving the photocatalytic reaction, including the nanoscale anatase crystalline domains, the presence of dispersed CdS forming an extended active junction CdS/anatase, and the presence of mesopores as nanoreactors. This system not only exhibited high photocatalytic activity using visible light but also demonstrated improved stability and recyclability due to the combination of TiO2 and CdS.
Article
Chemistry, Physical
S. Kiranmai, Charan Kuchi, Bathinapalta Sravani, Teresa Luczak, Myung Jong Kim, G. Madhavi, Y. Veera Manohara Reddy
Summary: A facile sensing platform using titanium dioxide-reduced graphene oxide nanofibers was developed for the accurate detection of epinephrine in biological fluids and pharmaceutical drugs.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Suresh Sagadevan, J. Anita Lett, Getu Kassegn Weldegebrieal, Md Rokon Ud Dowla Biswas, Won Chun Oh, Solhe F. Alshahateet, Is Fatimah, Faruq Mohammad, Hamad A. Al-Lohedan, Suriati Paiman, Jiban Podder, Mohd Rafie Johan
Summary: Evaluation of rGO-TiO2 nanocomposite showed good gas sensing and photocatalytic activity, with sensitivity and selectivity towards hydrogen and oxygen, as well as effective removal of RhB and MB dyes under visible light irradiation. The study highlighted the potential of rGO-TiO2 nanocomposite for practical applications in nanotechnology.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Yuchen Fei, Xiaofang Ye, Aseel Shaker Al-Baldawy, Jing Wan, Jinshen Lan, Jingtian Zhao, Ziyun Wang, Shanzhi Qu, Rongdun Hong, Shengshi Guo, Shengli Huang, Shuping Li, Junyong Kang
Summary: In this study, core-shell structure titanium dioxide/reduced graphene oxide (TiO2/rGO) nanowires were prepared and characterized for their physicochemical properties and photocatalytic performance. The results showed that these nanowires exhibited properties and functions similar to TiO2/Pt nanowires, while the cost of rGO was lower, which was of great significance for the photocatalytic application of TiO2 heterojunction materials in industry.
CURRENT APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Ozlem Uguz, Ozlem Budak, Atif Koca
Summary: In this study, composite thin films of binary metal chalcogenides (CdxZn1-xS) and electrochemically reduced graphene oxide (RGO) were successfully fabricated via repetitive cyclic voltammetry. The incorporation of RGO enhanced the conductivity and prevented photocorrosion of the chalcogenides, leading to an increase in photocurrent density. The optimized composition of CdxZn1-xS and RGO composites showed significantly enhanced photoelectrochemical performance under solar light irradiation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Ozlem Uguz Neli, Oezlem Budak, Atif Koca
Summary: Cadmium zinc sulfoselenide (CdZnSSe) and reduced graphene oxide-cadmium zinc sulfoselenide (RGO)-CdZnSSe composite-based photoelectrodes were fabricated using a facile, simultaneous co-electrodeposition method for the first time. The rCV technique allowed for homogeneous decoration of CdZnSSe particles among RGO sheets, resulting in improved photoelectrochemical performance in hydrogen evolution. The Cd0.8Zn0.2S0.2Se0.8 photodecoration demonstrated the highest photocurrent density (4.08 mA cm-2), which was further increased to 5.00 mA cm-2 by decorating with RGO. The proposed rCV technique showed superiority in fabricating well-controlled RGO-CdZnSSe composite photoelectrodes.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Liang Mao, Xiao-Yan Cai, Ming-Shan Zhu
Summary: In this study, a heterojunction of hierarchically 1D CdS nanowires decorated on 2D LTO was successfully fabricated via a two-step hydrothermal process. The CdS/LTO structure showed superior photocatalytic performance compared to pure LTO and CdS. This research provides insights into addressing energy crisis and environmental pollution issues.
Article
Chemistry, Multidisciplinary
Hyunho Kim, Mohamad Nugraha, Xinwei Guan, Zhenwei Wang, Mrinal K. Hota, Xiangming Xu, Tom Wu, Derya Baran, Thomas D. Anthopoulos, Husam N. Alshareef
Summary: Fully solution-processed, large-area electrical double-layer transistors (EDLTs) utilizing PbS colloidal quantum dots (CQDs) as active channels and Ti3C2Tx MXene as electrical contacts demonstrated high performance with a large electron saturation mobility of 3.32 cm(2) V-1 s(-1) and current modulation of 1.87 x 10(4). MXene's negative surface charges were found to enhance cation accumulation, achieving a low threshold voltage of 0.36 V. These results suggest a promising potential for MXene electrical contacts.
Article
Instruments & Instrumentation
Guangxin Liao, Zhenwei Wang, Congcong Luan, Jiapeng Liu, Xinhua Yao, Jianzhong Fu
Summary: This study demonstrates the fabrication of broadband acoustic focusing lens and asymmetric acoustic focusing lens using additive manufacturing technology, achieving focusing of acoustic waves in a wider frequency range. Experimental results show excellent performance of the designed focusing lens and asymmetric focusing lens, with good consistency between measured and simulated results.
SMART MATERIALS AND STRUCTURES
(2021)
Review
Materials Science, Multidisciplinary
Guangxin Liao, Congcong Luan, Zhenwei Wang, Jiapeng Liu, Xinhua Yao, Jianzhong Fu
Summary: Acoustic metamaterials composed of subwavelength periodic artificial structures with specific designs have exceptional abilities to manipulate acoustic waves compared to traditional materials. This review comprehensively investigates and summarizes current advances in acoustic metamaterial research, including theories, structural classifications, manufacturing methods, and applications, with the aim of promoting further development in the field.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Nanoscience & Nanotechnology
Zhenwei Wang, Congcong Luan, Guangxin Liao, Jiapeng Liu, Xinhua Yao, Jianzhong Fu
Summary: This study introduces a novel high-performance stretchable strain sensor, the ABSS, which utilizes an auxetic bilayer conductive mesh structure and multi-hardness silicones to enhance sensitivity and gauge factor. The synergistic effect of the bilayer conductive mesh, strain concentration, and auxetic deformation strategy significantly improves the sensing performance of the ABSS for wearable applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Biomedical
Jiapeng Liu, Xinhua Yao, Zhenwei Wang, Jian Ye, Congcong Luan, Yong He, Hui Lin, Jianzhong Fu
Summary: A flexible porous chiral tracheal stent was developed to address complications in tracheobronchial stenosis treatment. The innovative design showed improved ventilation, resistance to migration, and compatibility with pediatric patients. The stent's auxetic properties and porous sponge filler provide a promising environment for epithelial cell growth and potential for enhanced treatment outcomes.
ACTA BIOMATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Guangxin Liao, Zhixiang Li, Congcong Luan, Zhenwei Wang, Xinhua Yao, Jianzhong Fu
Summary: This study successfully prepared PA 66 filaments for FFF with excellent mechanical properties and high crystallinity, with samples at high processing temperatures showing higher strength and lower porosity. X-ray diffraction results demonstrated that increasing the processing temperature significantly improved the crystallinity of PA 66.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Nanoscience & Nanotechnology
Ziwei Zhang, Siqi Zhao, Yongqi Lv, Hongbo Zhang, Zhenwei Wang, Yong Han, Jinglian Fan
Summary: In this study, Ti-doped TiC-dispersion-strengthened W alloys were prepared using mechanical alloying. The introduction of Ti inhibited the growth of TiC and maintained its uniform distribution in the alloy, leading to improved sintering activity and high relative density. The formation of a stable semi-coherent interface between W and TiC phases contributed to enhanced mechanical properties of the alloy, including ultimate tensile strength and microhardness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Physics, Applied
Zhenwei Wang, Daiki Takatsuki, Jianbo Liang, Takahiro Kitada, Naoteru Shigekawa, Masataka Higashiwaki
Summary: We studied the electrical properties of n-Si/n-Ga2O3 heterojunctions fabricated by surface-activated bonding. By analyzing temperature-dependent current density-voltage characteristics, we obtained the energy barrier heights at the Si/Ga2O3 interface for different reverse voltages. The conduction band offset at the heterointerface was estimated, and the non-uniform distribution of charged interface states was found to contribute to the spatially inhomogeneous energy barrier heights. The density of shallow interface states was also extracted from the reverse current density-voltage characteristics.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Xiuyu Sun, Zhenwei Wang, Wei Yan, Chuangan Zhou
Summary: Pt/Ti4O7 catalysts with different mass ratios of Pt loading were synthesized using a modified polyol method. The morphology of uniformly dispersed Pt nanoparticles varied with Pt loading, showing rod-like shape for low loading and approximately spherical shape for higher loading. The presence of a new phase at the interface was observed for low loading samples, while lattice distortions and dislocations were found for higher loading samples. X-ray photoelectron spectroscopy analysis revealed apparent shifts in binding energy for Pt and Ti, indicating changes in absorption ability and oxygen reduction reaction activity. The synthetic method, Pt loading, and surface coverage of the support were found to be important factors in adjusting the metal-support interactions.
Article
Materials Science, Multidisciplinary
Zhenwei Wang, Huichao Cheng, Yongqi Lv, Ziwei Zhang, Jinglian Fan, Hongbo Zhang, Bin Liu, Zhiyuan Ma
Summary: In this study, Ti-30MoxTiC composites with different TiC contents were prepared using a powder metallurgy method. It was found that adding TiC could improve the relative density, microhardness, and elastic modulus of the composites, while reducing the ultimate tensile strength and elongation. The improvement in mechanical properties was attributed to the cooperative effect of densification, TiC particle reinforcement, solid solution of Mo and C elements, and the semi coherent interface.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuoye Yang, Jiaxin Liu, Yahong Ping, Zhenwei Wang, Jiaying Zhang, Lu Zhang, Lan Cui, Yongmei Xiao, Lingbo Qu
Summary: In this study, single-walled carbon nanotubes were functionalized to create multi-functional nanocarriers for drug delivery. These nanocarriers showed high drug loading efficiency, good biocompatibility, and responsive drug release. They exhibited excellent performance in terms of drug release, cell internalization efficiency, and antitumor activity. The multi-functional nanocarriers were able to induce cell apoptosis effectively and contribute to the rational design of novel delivery vehicles for anticancer drugs.
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
(2022)
Article
Physics, Applied
Zhenwei Wang, Takahiro Kitada, Daiki Takatsuki, Jianbo Liang, Naoteru Shigekawa, Masataka Higashiwaki
Summary: In this study, p-Si/n-Ga2O3 and p(+)-Si/n-Ga2O3 heterostructures were fabricated using surface-activated bonding technique, and their electrical properties were investigated. Current density-voltage measurement before and after thermal annealing at 450 ? showed a significant increase in current density after annealing, which was attributed to thinning of the intermediate layer formed during the bonding process. Distinctive two-stage capacitance-voltage characteristics were observed for p-Si/n-Ga2O3 heterostructures, and numerical calculation considering the effect of two-dimensional electron gas formed at the heterointerface reproduced these characteristics well. These results indicate that Ga2O3-based p-n heterostructures with good interface properties and large-area uniformity can be fabricated using surface-activated bonding.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Zhuang Li, Yuanrong Li, Zhenwei Wang, Pengcheng Wu, Nian Liu, Kai Liu, Zeming Gu, Yuewei Chen, Jing Nie, Huifeng Shao, Yong He
Summary: Inspired by sesame candy, a viscoelastic Silly Putty-like conductive nanocomposite (LPPC) was fabricated based on electrostatic/coordination interactions and hydrogen bonds. LPPC has adjustable viscoelasticity and 3D printing feasibility, and it shows promising prospects for various applications in wearable electronics, soft robotics, energy storage, electromagnetic interference shielding, and triboelectric nanogenerators.
Article
Electrochemistry
Yanyan Chen, Qinhao Shi, Shengyu Zhao, Wuliang Feng, Yang Liu, Xinxin Yang, Zhenwei Wang, Yufeng Zhao
Summary: Sodium-ion batteries are considered as a substitute for lithium-ion batteries due to their abundant resources, wide distribution, and low cost. P2-layered sodium transition metal oxides (P2-NaxTMO2) have gained extensive attention for their high rate and cycling properties. However, P2-NaxTMO2 often undergoes structural transformations when exposed to ambient air, limiting its practical applications. In this study, we investigated the effect of Nb doping on the air stability of P2-NaxTMO2. We found that Nb-induced surface preconstructed layer inhibited surface dissolution and formed a stable and thin cathode-electrolyte interphase (CEI) film, preventing water molecules from entering the P2-NaxTMO2 lattice. Na0.67Mn0.67Ni0.33Nb0.03O2 demonstrated superior rate performance (reversible capacity of 72.5 mAh g(-1) at 20 C) and excellent cycling performance (84.43% capacity retention after 1000 cycles at 5 C) in a half cell after being exposed to a moisture atmosphere (RH93%) for 20 days.
Article
Materials Science, Multidisciplinary
Yuanbo Zhu, Nian Liu, Zheqi Chen, Honghui He, Zhenwei Wang, Zeming Gu, Yuewei Chen, Jie Mao, Yingwu Luo, Yong He
Summary: Insects with small and light bodies can inspire the design of soft robots for various applications. However, creating insect-scale robots with fast mobility, good robustness, and impact-perception capability remains a challenge in engineering.
ACS MATERIALS LETTERS
(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)
