Article
Engineering, Chemical
Kui Liu, Yu Wang, Hua Long, Yafei Cheng, Yao Wu, Yezheng Cai, Juantao Jiang
Summary: This paper investigates the use of magnesium oxide slurry to precipitate and separate nickel and cobalt from the sulphate leach liquor of laterite nickel ores. By adjusting the conditions, it is possible to maximize the precipitation of nickel and cobalt while minimizing the precipitation of magnesium. The results show that high purity nickel and cobalt precipitates can be obtained under controlled equilibrium pH, and the regenerated magnesium oxide powder can be recycled for further use.
MINERALS ENGINEERING
(2021)
Article
Physics, Applied
C. Malavika, B. Manoj Kumar, E. S. Kannan
Summary: This paper presents a lithography-free technique for fabricating atomristor prototypes using photoexfoliated monolayer molybdenum di-sulfide. The resistive switching characteristics of the atomristor were demonstrated, showing excellent repeatability in switching between low and high resistance states. The device has the potential to be used in tunable write once read many memory devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Darshika Khone, Sandeep Kumar, Mohammad Balal, Sudipta Roy Barman, Sunil Kumar, Abhimanyu Singh Rana
Summary: Highly transparent resistive-switching devices were fabricated and their characteristics could be tuned by adjusting the top electrode and film thickness.
SCIENTIFIC REPORTS
(2023)
Article
Nanoscience & Nanotechnology
Venkata K. Perla, Kaushik Mallick
Summary: A protocol for preparing carbon nitride (CN)-supported nickel oxide nanoparticles using a high-temperature route was described, with the formation of dispersed nickel oxide nanoparticles confirmed. The CN-nickel oxide (CNNO) hybrid system showed promising electrical properties, optical properties, and crystalline structure morphology changes.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jian Xu, Jing Nong, Fengrui Liang, Sui Yuan, Lu Ren, Qi Guo, Tetsuo Shoji
Summary: This study investigated the effects of hydrogen charging on the oxide film of Ni, Cr, and Alloy 690 in high-temperature water. The results showed that hydrogen charging caused amorphization in the inner layer of Cr, thinning of the oxide film in Ni, and the presence of cavities along the boundary of inner oxide and matrix. The oxide film of Alloy 690 exhibited a mixed feature of Ni and Cr. The diffusion of hydrogen into the solution not only affected the thermal stability of the oxide film but also hindered the precipitation of outer oxide.
Article
Chemistry, Physical
Noratiqah Sazelee, Muhamad Faiz Md Din, Mohammad Ismail
Summary: By doping nickel zinc oxide into MgH2, the researchers were able to reduce the desorption temperature and improve the hydrogen absorption/desorption kinetics. This overcame the limitations of pure MgH2 and has potential for practical hydrogen storage applications.
Article
Chemistry, Multidisciplinary
Tianda Fu, Shuai Fu, Lu Sun, Hongyan Gao, Jun Yao
Summary: An efficient strategy is proposed in this paper to address individual devices and unlock the full potential of memristors for high-density memory and computing applications. This strategy uses a type of unipolar switch featuring transient relaxation or retention as the selector, which allows for bidirectional programming while suppressing sneak-path current. The advantages and scalability of this strategy are demonstrated using a specific example of a unipolar volatile memristor with ultralow switching voltage.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Ivana Zrinski, Alexey Minenkov, Cezarina Cela Mardare, Jan Philipp Kollender, Shaukat Ali Lone, Achim Walter Hassel, Andrei Ionut Mardare
Summary: Anodic memristors obtained through electrochemical anodization of Ta in phosphate, borate and citrate buffer solutions show memristive behavior with improved characteristics when anodized in phosphate buffer solution. The use of phosphate leads to higher stability, endurance and retention of the devices. These enhanced properties make anodic memristors ideal candidates for industrial implementation.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Ivana Zrinski, Marvin Loeefler, Janez Zavasnik, Claudia Cancellieri, Lars P. H. Jeurgens, Achim Walter Hassel, Andrei Ionut Mardare
Summary: The aim of this study was to develop memristors based on Nb2O5 by a simple and inexpensive electrochemical anodization process. It was found that the selection of electrolyte played an important role in resistive switching. Anodic memristors grown in phosphate buffer showed improved electrical characteristics, while those formed in citrated buffer exhibited excellent memory capabilities. The chemical composition of oxides was successfully determined using HAXPES and their phase composition and crystal structure were evaluated by TEM.
Article
Chemistry, Multidisciplinary
Ivana Zrinski, Cezarina Cela Mardare, Luiza-Izabela Jinga, Jan Philipp Kollender, Gabriel Socol, Alexey Minenkov, Achim Walter Hassel, Andrei Ionut Mardare
Summary: Anodic HfO2 memristors grown in different electrolytes exhibit varying performance, with citrate showing superior properties while borate performs the weakest. Various tests were conducted on the memristors, including the influence of low temperature heating and the stability of operation at high temperatures.
Review
Chemistry, Physical
Soroosh Saeedi, Xuan Trung Nguyen, Filippo Bossola, Claudio Evangelisti, Vladimiro Dal Santo
Summary: In this review, the performance of Ni-based catalysts supported on Mg(Al)O for SMR and DRM processes is analyzed in-depth. It is found that bimetallic catalysts, with the addition of a small amount of a second metal to Ni, can improve the catalyst durability. Innovative synthesis and pretreatment methods have also shown relevant improvements in enhancing the overall H-2 productivity.
Article
Electrochemistry
J. R. Lopez, L. Flores, P. F. Mendez, J. J. Perez Bueno, G. Trejo, Y. Meas
Summary: The study found that the addition of boric acid and sodium nitrate can reduce hydrogen permeation during nickel electroplating, while sodium dodecyl sulfate (SDS) does not have this effect. Boric acid promotes the formation of a more compact and less faulty nickel plating, improving the barrier effect, while sodium nitrate reduces hydrogen permeation by reacting with hydrogen ions. The combination of the three additives shows a significant decrease in hydrogen permeation.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
K. Jagannadham
Summary: The current-voltage characteristics of memristor of ZnO with platinum electrodes were studied. It was found that the lower concentration of O-- defects in ZnO led to figure-of-eight variation in the current-voltage characteristics, while a higher concentration of O-- defects resulted in counter-figure-of-eight variation. Threshold switching characteristics were observed when the concentrations of both defects were close and the binding energy overcame the electric field.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Lu Wang, Hongyu Zhu, Dianzhong Wen
Summary: Gold nanoparticles were embedded into silkworm hemolymph to fabricate a resistive random access memory device with improved performance, exhibiting bipolar switching behavior and long retention time. The nanoparticles act as electron trapping centers in the device, enhancing its performance and enabling multilevel data storage.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Multidisciplinary Sciences
Chetan Pawar, Darshan Mahajan, Rakesh Bind, Dhiraj Jadhao, Pradnya Desai, Harsha Bagde, Aarti More
Summary: The MgO-NiO, NiO-CoO, and MgO-CoO-based mixed metal oxides (MMO) were synthesized using the sol-gel method. Conductive polymers (CP) such as PANI, POA, and PANI-POA copolymer were grafted on the MMO using a chemical oxidation method, resulting in MMO-CP composites. The addition of MMO-CP into the coating formulation improved hardness, scratch resistance, and corrosion resistance of the epoxy-polyamide coating, with the NiO-CoO-POA composite-based coating performing exceptionally well.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Physics, Applied
Dongqing Liu, Qinyuan Jing, Haifeng Cheng
JAPANESE JOURNAL OF APPLIED PHYSICS
(2019)
Article
Energy & Fuels
Liang Peng, Dongqing Liu, Haifeng Cheng
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Energy & Fuels
Haining Ji, Dongqing Liu, Haifeng Cheng, Yijie Tao
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Materials Science, Multidisciplinary
Liang Peng, Dongqing Liu, Haifeng Cheng
MATERIALS TODAY COMMUNICATIONS
(2019)
Article
Multidisciplinary Sciences
Dongqing Liu, Songhe Zhang, Haifeng Cheng, Renfu Peng, Zhijian Luo
SCIENTIFIC REPORTS
(2019)
Article
Multidisciplinary Sciences
Mingyang Li, Dongqing Liu, Haifeng Cheng, Liang Peng, Mei Zu
Review
Materials Science, Multidisciplinary
Xin Tao, Dongqing Liu, Jinshan Yu, Haifeng Cheng
Summary: The reversible metal electrodeposition device (RMED) utilizes the appearance and disappearance of a metal layer to achieve spectrum control, making it suitable for applications in displays, smart windows, and thermal camouflage. Challenges in device enlargement present significant obstacles to its application.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xin Tao, Dongqing Liu, Tianwen Liu, Zhen Meng, Jinshan Yu, Haifeng Cheng
Summary: This research demonstrates a variable infrared emissivity device based on reversible silver electrodeposition (RSE) with excellent bistability of 24 hours. By using a silver layer fixed at the counter electrode as the charge mediator, bistability is achieved and the key factors affecting the bistability, such as electrolyte composition and driving voltage, are studied. The device can be scaled up and display discontinuous thermal patterns. This study is of great significance for dynamic infrared information display, adaptive infrared camouflage, and smart thermal management.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Jun Zhang, Wenxiang Wang, Yan Zhang, Qiang Wei, Fei Han, Shengyi Dong, Dongqing Liu, Shiguo Zhang
Summary: Low-molecular-weight adhesives possess unique features compared to polymer adhesives. This study demonstrates an ionic liquid-based adhesive with high adhesion strength by introducing an IL moiety into a Y-shaped molecule replete with hydrogen bonding interactions.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Baizhang Cheng, Dongqing Liu, Yan Jia, Haifeng Cheng
Summary: Variable infrared emissive materials and devices have been developed for dynamic modulation of infrared radiation. This study proposes a new method of dynamic emissivity modulation based on hydrogen-induced metal-insulator phase transition and develops infrared gasochromic devices. The research finds that the infrared emissivity of the device can be dynamically modulated reversibly in a short time by injecting hydrogen and air, and it is affected by the surface morphology and thickness of the film. Moreover, the proposed device has a simple structure and can be easily scaled up and patterned, showing great potential for various applications.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Baizhang Cheng, Haifeng Cheng, Yan Jia, Tianwen Liu, Dongqing Liu
Summary: This study demonstrates the use of thin metal films for infrared electrochromic devices with tunable emissivity. The devices operate via a hydrogen-induced metal-insulator transition, achieving reversible regulation of emissivity. The construction of sandwich-structured devices simplifies the structure and allows for large changes in emissivity. These devices have the potential for applications in adaptive thermal camouflage, smart thermal management, and dynamic information displays.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Ying Liu, Biao Wang, Lei Wu, Lulu Huang, Lu Lin, Li Xiang, Dongqing Liu, Shiguo Zhang, Chenguang Zhu, Yijie Tao, Dong Li, Anlian Pan
Summary: This study proposes a new optoelectronic neuromorphic architecture by integrating an electrochromic device and a perovskite photodetector, which exhibits visual synaptic functionalities. The visual synaptic function of the device can be modulated by adjusting the intensity and wavelength of external light signals, improving the device's information processing capability and image recognition accuracy.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Yan Jia, Dongqing Liu, Desui Chen, Yizheng Jin, Chen Chen, Jundong Tao, Haifeng Cheng, Shen Zhou, Baizhang Cheng, Xinfei Wang, Zhen Meng, Tianwen Liu
Summary: Dynamic infrared emissivity regulators have emerged as an attractive technology for efficiently modulating infrared radiation beyond vision in the fields of energy and information. Achieving independent modulation of visible and infrared spectra is a challenging and important task for their application in smart thermal management and multispectral camouflage.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Mingyang Li, Dongqing Liu, Haifeng Cheng, Liang Peng, Mei Zu
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
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)