Article
Chemistry, Physical
Mengmeng Jin, Jiewei Li, Jingchang Gao, Weilan Liu, Jing Han, Haimin Liu, Da Zhan, Linfei Lai
Summary: In this study, the oxygen evolution reaction (OER) activity of cobalt hydroxide carbonate (CCH) was enhanced by atomic doping of W6+ (W-CCH), reducing the overpotential and increasing the current density. Additionally, the electrolyzer based on 5%W-CCH only required a potential of 1.65 V to achieve 10 mA cm(-2) in full water splitting.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Noor-Ul-Ain Babar, Yasir Faheem Joya, Hassan Khalil, Fayyaz Hussain, Khurram Saleem Joya
Summary: The study developed a unique iron-oxide nanobeads electrocatalyst with high activity for OER and HER, while demonstrating low onset overpotential and high catalytic stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Tomasz Wasiak, Dawid Janas
Summary: The need for sophisticated chemical compounds drives progress in catalysis, with nanomaterials offering a promising alternative to traditional catalysts. Particularly notable results come from using metal species arranged as 1D nanowires, facilitating chemical transformations in organic chemistry.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Katarina Aleksic, Ivana Stojkovic Simatovic, Ana Stankovic, Ljiljana Veselinovic, Stevan Stojadinovic, Vladislav Rac, Nadezda Radmilovic, Vladimir Rajic, Sreco Davor Skapin, Lidija Mancic, Smilja Markovic
Summary: This study aimed to reduce the cost of platinum group metal (PGM) catalysts by replacing Ru with RuO2 and lowering the amount of RuO2 by adding abundant and multifunctional ZnO. A ZnO@RuO2 composite was synthesized using a green, low-cost, and fast method and was then annealed to improve its catalytic properties. The ZnO@RuO2 composite showed good bifunctional catalytic activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in acidic and alkaline electrolytes.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Physical
Wenshu Yang, Shuaishuai Wang, Kun Zhao, Yutao Hua, Jiangxiao Qiao, Wei Luo, Longhua Li, Jinhui Hao, Weidong Shi
Summary: A new synthesis method for P-doped NiSe2 (P-NiSe2) has been reported, showing superior electrochemical activity for both oxygen evolution reaction and hydrogen evolution reaction. The enhanced electrochemical activity is attributed to the P atom doping, leading to high catalytic ability towards OER and facilitating HER kinetics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Jin Wang, Mengke Zhang, Guanglong Yang, Wenwu Song, Weiting Zhong, Xunyue Wang, Minmin Wang, Tongming Sun, Yanfeng Tang
Summary: The Mo-NiPx/NiSy electrode exhibits low overpotentials and high activity in both hydrogen evolution and oxygen evolution reactions, demonstrating remarkable full water splitting performance comparable to commercial electrolysis.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Xuhan Zhang, Chenyu Xu, Li Zhang, Zheng Li, Jianan Hong, Yanwei Zhang
Summary: Wasted high-temperature water can be used for photothermal catalytic water splitting reactions to produce solar fuel and provide high-temperature heat. Cu-modified TiO2 improves the photoresponse and promotes the water splitting reaction. Increasing temperature reduces the energy barrier and charge-transfer resistance, leading to increased hydrogen yield.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Limin Song, Shuhan Sun, Shujuan Zhang, Junfu Wei
Summary: This study validates the piezoelectric and pyroelectric performances of α-Si3N4 and demonstrates its high stability and potential for hydrogen production from water splitting.
Review
Chemistry, Physical
Yue Wu, Lihua Bi
Summary: With the rise in global attention towards clean energy, hydrogen energy has emerged as a significant source. Utilizing photocatalysts, electrocatalysts, and photo-electrocatalysts for water splitting to obtain hydrogen and oxygen has become essential.
Article
Biochemistry & Molecular Biology
Muhammad Jamshed Latif, Sarmed Ali, Saba Jamil, Shamsa Bibi, Touseef Jafar, Ammara Rasheed, Sadia Noreen, Arslan Bashir, Shanza Rauf Khan
Summary: This study focuses on the synthesis of nanocomposites using sodium alginate as a biodegradable macromolecule and their application as catalysts. Zinc oxide and nitrogen doped carbon nitride nanoparticles were prepared using solvothermal and hydrothermal methods, respectively, and a ZnO/ND-C3N4/SA nanocomposite was successfully synthesized through in-situ polymerization. The nanocomposites showed greater catalytic efficiency than the nanoparticles in both reduction and degradation reactions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2024)
Article
Chemistry, Multidisciplinary
Enrico Lepre, Sylvain Rat, Cristian Cavedon, Peter H. Seeberger, Bartholomaeus Pieber, Markus Antonietti, Nieves Lopez-Salas
Summary: The influence of structural modifications on the catalytic activity of carbon materials is investigated using carbonaceous materials with different pore networks and high nitrogen content. Results show that CO2 cycloaddition and Knoevenagel reaction are dependent on Lewis basic sites, while the absence of large conjugated carbon domains due to the introduction of nitrogen leads to poor redox activity. The material with the highest Lewis acid catalytic activity demonstrates the most effective small molecule activation and the highest concentration of electron-poor nitrogen species.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Chengdong Han, Zhengtong Ji, Yongfu Zhu, Xue Yao, Peng Chen, Manying Guo, Lijun Zhao, Xingyou Lang, Qing Jiang
Summary: This study proposes a method to synthesize a non-noble metal catalyst with excellent catalytic performance, good stability, and low cost, which is important for achieving overall water splitting. The NiFe layered double hydroxides (NiFe LDHs) coated sulfide/phosphide heterostructure (Ni3S2-NixPy/NF@NiFe LDH) on a nickel foam were successfully synthesized using a bottom-up method combined with hydrothermal method and electrodeposition. Low overpotentials were achieved for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), demonstrating the high efficiency of the catalyst.
MATERIALS RESEARCH LETTERS
(2022)
Article
Chemistry, Physical
Yanbo Liu, Qiangchao Sun, Tong Duan, Chaoyun Liu, Hongwei Cheng
Summary: The development of a perovskite-type oxygen transport membrane with high stability is important for thermochemical water splitting for hydrogen production. This study investigated the stability enhancement of a doped high valence ion (Nb5+) in the Pr0.6Sr0.4Fe0.9Nb0.1O3-delta (PSFN) oxygen transport membrane, considering the crystal structure, thermal expansion property, and roles of Fe3+/4+ ions. The introduction of Nb inhibits phase transition, thermal expansion, and lattice oxygen release, improving structural stability even in a reducing atmosphere. Additionally, a decrease in the average valence of Fe ions enhances the chemical stability of PSFN, with a Fe3+ to Fe4+ ratio close to 2:1 contributing to long-term stability in hydrogen production from water splitting.
Article
Chemistry, Physical
Xiaomeng Guo, Xiaoguang Duan, Junyi Ji, Xiaobin Fan, Yang Li, Fengbao Zhang, Guoliang Zhang, Yi-An Zhu, Wenchao Peng, Shaobin Wang
Summary: In this study, a nitrogen and sulfur co-doped graphene (SNG) anchored on interconnected conductive graphite foam (GF) was successfully fabricated, which can be directly used as a free-standing electrode for electrocatalytic degradation of organic pollutants and overall water splitting. The composite material exhibited enhanced electrochemical activation of peroxymonosulfate (PMS) for catalytic oxidation, and also showed superior performance in the oxygen evolution reaction (OER) compared to most reported metal-free catalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Guang-Lan Li, Xiang-Yue Qiao, Ying-Ying Miao, Tian-Yu Wang, Fei Deng
Summary: A 3D cross-linked carbon nanotube supported oxygen vacancy (V-o)-rich N-NiMoO4/Ni heterostructure catalyst (N-NiMoO4/Ni/CNTs) was synthesized and showed promising electrocatalytic activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The catalyst exhibited low overpotential and excellent cycling stability.
Article
Chemistry, Analytical
Rohini B. Shinde, Akash S. Patil, Shrikant Sadavar, Yogesh M. Chitare, Vikas V. Magdum, Navnath S. Padalkar, Umakant M. Patil, Saji T. Kochuveedu, Vinayak G. Parale, Hyung-Ho Park, Chandrakant D. Lokhande, Jayavant L. Gunjakar
Summary: This article reports the preparation of mesoporous layered nanohybrids of zinc chromium layered double hydroxide (Zn-Cr-LDH) and polyoxotungstate (POW) anions via an exfoliation-reassembling process. The Zn-Cr-WO nanohybrids displayed the highest selectivity towards Cl-2 and showed fastest response and recovery times of 5 and 133 s, respectively, at room temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Navnath S. Padalkar, Shrikant Sadavar, Rohini B. Shinde, Akash S. Patil, Umakant M. Patil, Dattatray S. Dhawale, Habib M. Pathan, Shrikrishna D. Sartale, Vinayak G. Parale, Ajayan Vinu, Chandrakant D. Lokhande, Jayavant L. Gunjakar
Summary: The study demonstrates the use of exfoliation-restacking strategy to prepare Ni-Cr-LDH-POV nanohybrids for high-performance HSC, showing improved electrochemical performance and increased specific capacity. The resulting nanohybrid electrode exhibits high specific energy and power with excellent cyclic durability over 10,000 charge-discharge cycles, highlighting the potential for high-performance HSC.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Shrikant Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Akash S. Patil, Umakant M. Patil, Vikas V. Magdum, Yogesh M. Chitare, Shirin P. Kulkarni, Ravindra N. Bulakhe, Vinayak G. Parale, Jayavant L. Gunjakar
Summary: By using two-dimensional graphene oxide nanosheets as a hybridization matrix, the electrode performance of layered double hydroxides can be improved. The study showed that the hybridized nanohybrids exhibited enhanced specific capacity, high electrical conductivity, and improved charge transfer kinetics. Aqueous and solid-state hybrid supercapacitors fabricated using the optimized nanohybrids demonstrated excellent specific capacitance, energy, and power performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
P. P. Bagwade, D. B. Malavekar, S. B. Ubale, R. N. Bulakhe, I. In, U. M. Patil, C. D. Lokhande
Summary: Cobalt tungstate (CoWO4) thin films were synthesized for the first time using the successive ionic layer adsorption and reaction (SILAR) method. The films exhibited a monoclinic crystal structure and had a surface morphology consisting of agglomerated cauliflower-like spherical nanoparticles. The specific capacitance and capacitance retention of the CoWO4 thin film electrode were found to be high, and the thin films were also used to assemble a flexible solid-state symmetric supercapacitor device with good performance.
ELECTROCHIMICA ACTA
(2022)
Article
Engineering, Electrical & Electronic
Sujit A. Kadam, Yuan-Ron Ma, Yan-Ruei Chen, Yuvraj H. Navale, Amol S. Salunkhe, Vikas B. Patil, Sachin D. Ralegankar, Pravin D. More
Summary: Among all the transition metal oxides, iron oxide-based materials are excellent for supercapacitor performance. In this study, Mn-incorporated alpha-Fe2O3 nanostructured thin films were prepared via spray pyrolysis. The effects of Mn concentration on the structural and optical properties of the films were investigated. It was found that increasing Mn concentration can tune the band gap of the films and affect the supercapacitive performance. The 7% Mn-incorporated alpha-Fe2O3 nanostructured electrode exhibited excellent specific capacitance, energy density, and power density in the electrolyte.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Nithya S. George, Sujit Anil Kadam, S. Sreehari, Lolly Maria Jose, Yuan-Ron Ma, Arun Aravind
Summary: Copper-doped zinc oxide nanoparticles (Zn1-xCuxO; x = 0, 0.025, and 0.05) were synthesized by a viable hydrothermal method. Structural, morphological, and optical studies were conducted to characterize the properties of the material. The samples were tested as adsorbents for dye degradation using Methylene Blue (MB) as a model dye, and their antibacterial potential against both gram-negative and gram-positive bacteria was evaluated using the disc diffusion method. The results demonstrate the practical applicability of the prepared samples in photodegradation and antibacterial applications.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Govinda A. A. Kadam, Sagar A. A. Patil, Bajarang B. B. Patil, Sarita S. S. Kumbhar, Sambhaji S. S. Kumbhar, Suraj B. B. Madake, Laxman D. D. Kadam, Yuan-Ron Ma, Sujit A. A. Kadam, Rajesh K. K. Nimat
Summary: The novel fast oxide ion-conducting material La2Mo2O9 (LAMOX) thin films were synthesized using the cost-effective chemical spray pyrolysis technique. The phase transition of La2Mo2O9 from alpha-monoclinic to beta-cubic phase at 546.5 degrees C was confirmed by thermal gravimetric and differential thermal analysis and Rietveld refinement. The porous morphology and presence of elements La, Mo, and O were observed on the surface of thin films after annealing and XPS study. The frequency-dependent dielectric constant decreased as the frequency increased for all La2Mo2O9 thin films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Lolly Maria Jose, Nithya S. George, Sujit Anil Kadam, S. Athira, A. Kripa, Arun Aravind, Yuan-Ron Ma, Yan-Ruei Chen
Summary: In this study, pristine and (2.5-5) wt% Ni, Cu doped SnO2 were used as adsorbents for the removal of Malachite Green (MG) dye under natural solar light. The synthesized nanostructures were characterized using XRD, XPS, BET, FESEM, and UV-Visible spectroscopy. Kinetic models were applied to examine sorption data, and the pseudo second order model was found to accurately describe the adsorption mechanism. The thermodynamic parameters indicated that the sorption mechanism of MG dye onto pristine and doped SnO2 nanostructures was endothermic, spontaneous, and thermodynamically feasible. 5% Cu doped SnO2 showed the highest photocatalytic degradation efficiency, removing 81.42% of the initial dye concentration within 240 minutes of contact time. SQUID measurement confirmed the existence of ferromagnetic behavior in Ni and Cu doped SnO2 nanostructures.
Article
Chemistry, Physical
Gajanan M. Hingangavkar, Sujit A. Kadam, Yuan-Ron Ma, Ramesh N. Mulik, Vikas B. Patil
Summary: Facile hydrothermal route was employed to prepare MoS2 nanoparticles (NPs) with superior specific surface area and hexagonal lattice structure. The MoS2 NPs demonstrated excellent gas sensing performance towards H2S gas, with a fast response and recovery time. It could detect as low as 1 ppm concentration of H2S gas.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Sambhaji S. Kumbhar, Shraddha B. Bhosale, Sachin S. Pujari, Vinod V. Patil, Nitish Kumar, Rahul R. Salunkhe, Chandrakant D. Lokhande, Umakant M. Patil
Summary: The surface area of cobalt vanadium oxide (CVO) material, which contributes to enhanced charge-storing ability, is controlled through changing growth dynamics. The resulting hydrous cobalt vanadium oxide nanoparticles thin film electrodes show altered surface area and high specific capacitance (Cs) of 793 F g(-1) at 0.5 A g(-1). Aqueous and solid-state hybrid supercapacitor devices constructed using CVO1:1 demonstrate high Cs and specific energy (SE), indicating their potential in electrochemical energy storage.
Review
Materials Science, Multidisciplinary
Vikas V. Magdum, Yogesh M. Chitare, Shirin P. Kulkarni, Prashant D. Sawant, Shraddha A. Pawar, Shweta V. Talekar, Chandrakant D. Lokhande, Umakant M. Patil, Sharad B. Patil, Jayavant L. Gunjakar
Summary: Among transition metal dichalcogenides, group VI layered metal (Mo and W) dichalcogenides (LMD) have gained research interest due to their unique layered structure and physicochemical properties. Solution-based deposition methods provide tunable properties for LMDs, allowing for diverse applications in energy storage, catalysis, optoelectronics, and more. Understanding the research progress and future scope of solution-based deposited group VI LMDs is crucial for their utilization in various fields.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Pratik Ashok Patil, Suraj Anandrao Khalate, Umakant Mahadev Patil, Rajendra Devidas Kale, Sachin Babasaheb Kulkarni
Summary: This study prepared sulfur-doped nickel oxide (S-NiO) honeycomb nanostructure electrodes via a cost-effective chemical bath method and explored their structural, morphological, and electrochemical properties. The S-NiO electrode exhibited excellent capacitance performance in aqueous electrolyte, while graphite as the negative electrode showed significant capacitance performance in a wide operating potential window. The AAHSc device demonstrated remarkable performance in terms of high energy density, power density, capacitance retention, and coulombic efficiency.
MATERIALS ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Pratik Ashok Patil, Suraj Anandrao Khalate, Umakant Mahadev Patil, Rajendra Devidas Kale, Sachin Babasaheb Kulkarni
Summary: In this study, sulfur-doped nickel oxide honeycomb nanostructure electrodes were prepared using a cost-effective chemical bath method and optimized through a Capping, Doping and Annealing (CDA) mechanism for improved electrochemical performance of hybrid supercapacitors. The research showed that the hybrid supercapacitors exhibited high specific capacitance, energy density, and excellent cycle stability.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Sachin S. Pujari, Sujit A. Kadam, Yuan-Ron Ma, Satish B. Jadhav, Sambhaji S. Kumbhar, Shraddha B. Bhosale, Vinod V. Patil, Jayavant L. Gunjakar, Chandrakant D. Lokhande, Umakant M. Patil
Summary: This study demonstrates the synthesis of amorphous, hydrous nickel copper phosphate thin film using a simple and cost-effective method. The resulting film exhibits excellent electrochemical performance and is used as a cathode in hybrid supercapacitors, leading to high performance and long-term durability.
SUSTAINABLE ENERGY & FUELS
(2022)
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)