Review
Chemistry, Multidisciplinary
Breanna Clarke, Khashayar Ghandi
Summary: This review provides an overview of the structure and properties of ZnO nanostructures and discusses their applications in various industries. It examines previous research on ZnO nanorod growth using UV-visible spectroscopy and scanning electron microscopy, and highlights the importance of synthesis processes in determining nanostructure properties and applications. The review also unveils the mechanism of ZnO nanostructure growth and suggests future directions for research.
Article
Chemistry, Physical
P. P. Ortega, C. C. Silva, M. A. Ramirez, G. Biasotto, C. R. Foschini, A. Z. Simoes
Summary: ZnO nanostructures synthesized via the microwave-assisted hydrothermal method show superior photocatalytic and gas sensing performances, highlighting their potential for environmental applications such as water purification and air monitoring.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Physical
Y. Shi, X. Li, X. F. Sun, X. Shao, H. Y. Wang
Summary: Detection of ethanol is crucial in various fields due to its explosive, colorless and volatile nature. Metal oxide semiconductors (MOS) gas sensors, particularly those based on indium oxide (In2O3), have gained attention for their low cost and convenient detection. This paper summarizes the strategies used in the last decade to enhance the performance of In2O3-based gas sensors for ethanol detection, including morphology modification, doping, heterojunction construction, and the use of composite materials. The sensing mechanism for ethanol detection by gas sensors is also presented.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yuwei Qu, Zhichao Song, Jun Zhang
Summary: Highly sensitive and long-term stable ethanol gas sensors based on 3D urchin-like ZnO micro/nanospheres are synthesized. The sensors exhibit a high sensitivity of 15.0, fast response and recovery times of 14 seconds and 7 seconds respectively when detecting 200 ppm ethanol gas at 280 degrees C. After 450 days of storage, the sensors still maintain a sensitivity of 5.9 towards 200 ppm ethanol gas at the same operating temperature.
Article
Chemistry, Analytical
M. B. Kusuma Urs, B. Vinayak Kamble
Summary: This study demonstrates that surface chemisorbed ambient moisture can lead to highly selective response of zinc oxide nanoparticles to hydrogen gas at room temperature. The presence of p-type NiO quasi-nanowires in conjunction with n-type ZnO nanoparticles significantly enhances the response to hydrogen gas. Furthermore, the presence of heterojunction barriers and surface ionic conduction at the NiO-ZnO interface synergistically enhance the selective response to hydrogen gas at room temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Bikash Baro, Sammun Khimhun, Upamanyu Das, Sayan Bayan
Summary: This study reports the fabrication of a textile-based wearable sweat sensor utilizing the principle of triboelectrification. The single electrode triboelectric nanogenerator (STENG) composed of zinc oxide (ZnO) nanorods on a textile platform was explored for sweat sensing application, showing promising results in terms of motion sensing and sensitivity to changes in saline water concentration. A miniaturized proof of concept prototype of the STENG was developed and found to be efficient in sweating conditions when attached to the human body. Additionally, the integration of the textile-based STENG with a microcontroller unit enabled remote sensing of the generated signals.
Article
Chemistry, Inorganic & Nuclear
Shiyu Zhou, Jiapeng Ji, Tong Qiu, Liguang Wang, Wenbin Ni, Sheng Li, Wenjun Yan, Min Ling, Chengdu Liang
Summary: The study designed a composite material based on ZIF-8 derived ZnO, functionalized with rGO to enhance the selectivity of H-2 sensing, achieving significant results.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Electrochemistry
Bo Huang, Wen Zeng, Yanqiong Li
Summary: This study presents an effective strategy for the development of high-response volatile organic compounds (VOC) sensors by coating nano-metal oxides with metal-organic frameworks (MOF). The composite material, consisting of ZnO and ZIF-8, is able to form numerous pores and interface defects, enhancing the gas detection performance. The composite sensor exhibits optimal operating temperature at 350 degrees C and shows more than tripled response to 50 ppm gases compared to the ZnO sensor.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
Mansour Mohamed, Ahlam Abd Alfatah, Abdullah S. Alshammari
Summary: The main objective of this study is to fabricate ZnO nanorods (NRs) and investigate their structural, optical, and photocatalytic properties. The study aims to contribute to the development of these materials for optoelectronic and water treatment applications. ZnO NRs were synthesized on gold-coated glass substrates using electrochemical deposition technique. Scanning electron microscopy (SEM) images demonstrated uniform and dense growth of ZnO NRs. The average diameter and length of NRs increased with the growth time. The ZnO NRs have a hexagonal crystalline structure and grow in the direction of the (200) plane. The band gap of ZnO NRs decreased with increasing deposition time. Photocatalytic activity of ZnO NRs improved with higher irradiation and deposition time.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Review
Chemistry, Physical
Tingting Zhou, Tong Zhang
Summary: With the advancement of nanoscience and nanotechnology, nanomaterials with unique properties have gained more attention in the field of electronic sensors, especially in gas sensing devices. Recent achievements have led to a new wave of research in designing advanced sensing materials with different dimensional structures. The sensitivity and performance of these materials are closely related to their structure, electronic properties, and surface chemistry, influencing various gas sensing applications such as environmental monitoring and flexible wearable electronics.
Article
Chemistry, Multidisciplinary
Xianfeng Zhang, Wenjie Du, Qian Li, Changpeng Lv
Summary: This study proposes precursor pyrolysis, ultrasonic exfoliation, hydrothermal, and high-temperature calcination methods to fabricate g-C3N4/ZnO composites with excellent gas sensing properties. The composition and structure of the composites were characterized, and it was found that 1% doping of g-C3N4 achieved the best sensing performance at 280 degrees C, with a response of 81.4 to 100 ppm ethanol. The sensor also exhibited fast response and recovery speeds, as well as good selectivity.
Article
Chemistry, Inorganic & Nuclear
Dinesh Mani, S. Sundar Manoharan, Ganesan Sriram, G. Johnsy Arputhavalli, S. Jebasingh
Summary: Kinematically grown highly oriented hexagonal ZnO nanorods and nanograined films were fabricated on silicon substrates via pulsed laser deposition. The structural, morphological, optical properties, and gas sensing studies of ZnO nanostructured thin film were systematically investigated. The study demonstrated that ZnO nanorods exhibit a greater sensitivity response for the detection of acetaldehyde (CH3CHO) compared to ZnO nanograined films, suggesting their potential as a material for CH3CHO gas detection at room temperature.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jolina Rodrigues, Navinchandra Gopal Shimpi
Summary: Mixed shape cobalt doped ZnO nanostructures were synthesized and found to be selective towards TMA sensing. The impact of doping on various properties of the nanostructures was studied. The optimal gas response for TMA was observed at 100 degrees C using Co doped ZnO. Co doped ZnO showed enhanced selectivity towards TMA gas compared to other gases.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Xi-Tao Yin, Wen-Dong Zhou, Davoud Dastan, Jing Li, Xiao-Ming Tan, Ying Liu, Xiao-Chun Gao, Xiao-Guang Ma
Summary: This study fabricated a ZnO-xCo(3)O(4) composite and measured its gas sensing selectivity, crystal structure, morphology, and chemical element state. It was found that the gas sensing behavior of the material was influenced by the concentrations of n- and p-type materials. The optimized ZnO-0.269Co(3)O(4) composite showed a high selectivity value of 24.2 to CO against CH4. This research offers a promising way to solve the poor selectivity of metal oxide semiconductor sensors to homogeneous gases.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Donglin Li, Junfeng Lu, Xuanji Zhang, Xiaolin Peng, Jing Li, Yanting Yang, Bo Hong, Xinqing Wang, Dingfeng Jin, Hongxiao Jin
Summary: Gas sensors based on reduced graphene oxide/metal oxide semiconductors improve sensor performance. The combination of reduced graphene oxide and ZnO rods forms an np-type heterojunction structure for a nitrogen dioxide sensor. The composites exhibit reversible sensing behavior induced by changes in gas concentration and temperature. The study provides potential applications for efficient NO2 detection.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Dong Jin Lee, Ganesan Mohan Kumar, Youjoong Kim, Woochul Yang, Deuk Young Kim, Tae Won Kang, Pugazhendi Ilanchezhiyan
Summary: High crystalline MoO3 nanosheets were obtained through a vapor phase epitaxy method and used to fabricate a photodetector with striking photoresponse. Introducing CsPbBr3 quantum dots significantly enhanced the photocurrent of MoO3 devices, leading to high responsivity and broad spectral response from UV to visible light. The study suggests that CsPbBr3 QDs/MoO3 hybrids hold promise for broad band photodetectors and other optoelectronic devices.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Muhammad Hilal, Woochul Yang
Summary: In this study, a CoO/Co-doped ZnO heterostructure was formed on a flexible PET substrate at low temperatures through an in situ technique. The heterostructure showed reduced charge transfer resistance, improved corrosion resistance, increased active sites, and enhanced flexibility, making it suitable for highly sensitive, chemically stable, and flexible pH and glucose sensors.
Article
Materials Science, Multidisciplinary
Kai Yang, Hao Fu, Yixue Duan, Manxiang Wang, Minh Xuan Tran, Joong Kee Lee, Woochul Yang, Guicheng Liu
Summary: 47 nm-sized ZnS@NCs were successfully synthesized via a one-pot hydrothermal process, and the covalent bonds between the ZnS core and elastic carbon shell significantly improved the mechanical and chemical stabilities of ZnS@NC. ZnS@NC exhibited high reversible capacity and superior rate performance, and this synthesis strategy was also successfully applied to the synthesis of other TMS@NCs.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Environmental
Weiwei Han, Lingyun Xiong, Manxiang Wang, Woncheol Seo, Yuzhen Liu, Syed Taj Ud Din, Woochul Yang, Guicheng Liu
Summary: By using an in-situ electrochemical induction technique to fabricate a ZnSe interface layer on the zinc surface, the zinc anode is endowed with high hydrophilicity and a low nucleation energy barrier, effectively alleviating dendritic growth and side reactions. This method shows promising potential for large-scale energy storage applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Il-Ho Ahn, Deuk Young Kim, Woochul Yang
Summary: Mobility spectrum analysis (MSA) is used to separate carrier density and mobility of majority and minority carriers in multicarrier semiconductors. In this study, p-GaAs layer is analyzed using MSA to demonstrate its application in defect analysis. Results show that the presence and peak position of defect state can be predicted by comparing the density ratio of minority and majority carriers. DLTS signals dominate around a specific temperature, consistent with the temperature-dependent generation-recombination and thermionic emission peaks.
Article
Chemistry, Analytical
Muhammad Hilal, Wanfeng Xie, Woochul Yang
Summary: A 3D straw-sheaf-like cobalt oxide was prepared without the assistance of template or surfactant using hydrothermal method and inert gas calcination. The material exhibited high crystallinity, large surface area, small pore size, and excellent electrochemical stability, making it suitable for non-enzymatic glucose oxidizing electrodes.
Article
Physics, Multidisciplinary
Weibin Zhang, Woochul Yang, Yingkai Liu, Zhiyong Liu, Fuchun Zhang
Summary: Thirteen thermally and environmentally stable Janus MA(2)Z(4) monolayers were identified through high-throughput calculations, with highly concentrated charge carriers and potential applications in electrode materials, optoelectronics, solar cells, and photocatalysis. These monolayers exhibit excellent conductivity, high light absorption, and good light transmittance, making them promising candidates for various applications.
FRONTIERS OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Jeonghyeon Na, Changyeon Park, Chang Hoi Lee, Won Ryeol Choi, Sooho Choi, Jae-Ung Lee, Woochul Yang, Hyeonsik Cheong, Eleanor E. B. Campbell, Sung Ho Jhang
Summary: Nano-scrolls of MoS2 with inner core radii of 250 nm were generated from MoS2 monolayers, and their optical and transport band gaps were investigated. The results showed that the optical and transport properties of the nano-scrolls differ from the original MoS2 monolayers, indicating a new type of quasi-1D nanostructure with modified band gap.
Article
Engineering, Environmental
Weiwei Han, Hankyu Lee, Yuzhen Liu, Youjoong Kim, Huaqiang Chu, Guicheng Liu, Woochul Yang
Summary: In this study, a novel type of nanosized and functionalized graphene quantum dots (F-GQDs) are decorated on a zinc anode to improve the electrochemical performance. The F-GQDs can regulate the plating/stripping process of zinc and enhance the rate capability and long-term cycling performance when coupled with MnO2 cathodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Lingyun Xiong, Youjoong Kim, Hao Fu, Weiwei Han, Woochul Yang, Guicheng Liu
Summary: This study successfully achieved reversible and uniform deposition of Zn metal by constructing F-doped carbon nanoparticles (FCNPs) on substrates through plasma-assisted surface modification. The FCNPs acted as nucleation assistors, improving Zn plating kinetics and resulting in uniform Zn deposition. Additionally, the ZnF2 solid electrolyte interface contributed to rapid mass transfer and enhanced Zn reversibility while suppressing side reactions. This ingenious surface modification broadens revolutionary methods for uniform metallic deposition and enables dendrite-free rechargeable battery systems.
Article
Chemistry, Physical
Zhuohong Xie, Woncheol Seo, Syed Taj Ud Din, Hankyu Lee, Changchang Ma, Woochul Yang
Summary: Solar-driven CO2 conversion into chemical fuels using photocatalysts is a sustainable method for renewable energy. However, the low photocatalytic activity is limited by poor photoabsorption, low charge separation efficiency, and sluggish interfacial reaction. To address this issue, a mesh cladding structure of Sr-doped LaFeO3/Bi4O5Br2 photocatalyst with abundant surface oxygen vacancies (OVs) is developed. The optimized photocatalyst with appropriate Sr doping and BOB content shows a considerable methane generation, which is significantly higher than the pristine LFO.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Lingyun Xiong, Hao Fu, Kai Yang, Ji Young Kim, Ren Ren, Joong Kee Lee, Woochul Yang, Guicheng Liu
Summary: A reversible heterogeneous electrode of Zn-nanocrystallites/polyvinyl-phosphonic acrylamide (Zn/PPAm) with fast electrochemical kinetics is designed to address the poor reversibility of Zn-metal anodes. The electrode utilizes phosphonic acid groups, hydrophobic carbon chains, and weak electron-donating amide groups to ensure structural reversibility, suppress side reactions, and promote Zn2+ transport. The heterostructure and Zn nanocrystallites further enhance electrochemical reactivity. The Zn/PPAm electrode exhibits excellent cycle reversibility and durability in symmetrical cells and fiber-shaped batteries.
Article
Engineering, Environmental
Hao Fu, Yuzhen Liu, Zhuohong Xie, Youjoong Kim, Ren Ren, Woochul Yang, Guicheng Liu
Summary: A Zn@SiC electrode with an Ohmic contact is reported, which exhibits excellent durability and enhanced electrode process kinetics, and plays a critical role in achieving high-performance aqueous Zn-metal batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ling-Yun Xiong, You-Joong Kim, Won-Cheol Seo, Han-Kyu Lee, Woo-Chul Yang, Wan-Feng Xie
Summary: In this study, Co3O4/reduced graphene oxide (rGO) nanocomposite was successfully used as a modified electrochemical electrode for the detection of trace glucose. The Co3O4/rGO modified electrode exhibited high sensitivity, low detection limit, and fast response time, making it a promising candidate for practical electrochemical biosensors.
Article
Biotechnology & Applied Microbiology
Shu Yan, Shu-Zhe Zhang, Wan-Feng Xie, Ling-Yun Gai, Hui-Min Yuan, Ding Zhang, He Zhang, Xuhai Liu, Woochul Yang, Zong-Tao Chi
Summary: In2O3/ZnSnO3 cubic crystallite composites synthesized through hydrothermal and calcination processes exhibit significant ethanol sensing properties, making them a potential material for constructing high-performance ethanol sensors.
SENSORS AND ACTUATORS REPORTS
(2022)
Article
Materials Science, Ceramics
Zilong Xiong, Wenzhuo Xue, Mujun Li, Feihu Tan, Yupeng Chen, Hongyu Yu
Summary: In this study, CBS glass/Al2O3 composites were developed for LTCC applications based on a CaO-B2O3-SiO2 (CBS) glass system with a high boron content. The study revealed that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. Real-time shrinkage rate of LTCC during sintering was successfully simulated, and it was proven that the formation of the CaAl2(BO3)O phase played a significant role in reducing glass viscosity and promoting dense structure formation. The resulting LTCC composite exhibited excellent performance for high-frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiabei He, Mengshan Song, Ming Yang, Miaomiao Zhu
Summary: This study investigates the influence of ion irradiation on high-entropy ceramics and finds that irradiation-induced lattice rearrangement can improve the radiation resistance of these ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yajie Yu, Shi He, Zhengang Zhang, Haihua Chen, Peipeng Jin, Binnian Zhong, Linhui Zhang, Liping Wang, Cheng Lu
Summary: Silicide ceramics, including tantalum disilicide (TaSi2), are known for their exceptional physical properties but are limited in practical applications due to their inherent brittleness at room temperature. In this study, we successfully improved the mechanical properties of TaSi2 ceramics and increased their electrical conductivity by modifying the preparation methods and sintering conditions. These findings provide valuable insights for future applications of TaSi2 and the design of advanced ceramic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jian Li, Jia Liu, Yongcui Zhang, Wei Sun, Yang Wang, Haitao Wu, Ling Li, Chuanbing Cheng, Yingying Wang, Ke Tan, Futian Liu
Summary: Microstructure design plays a crucial role in regulating the microwave dielectric properties of materials, however, the understanding of frequency temperature stability and related micromechanism remains limited. In this study, a combination of first-principles calculations and experimental observation was used to investigate the correlation among sintering behavior, crystal structure, bonding nature, and microwave dielectric properties of LnPO(4) (Ln = Eu, Pr) ceramics. The research findings systematically clarify the optimized effect and micromechanism of lanthanides on the dielectric properties of monazite ceramics, providing insights into the design and enhancement of microwave dielectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Wenqian Pan, Xizhen Xia, Wei Zhou, Yang Li
Summary: The study investigates the frictional and wear behaviors of carbon fiber-reinforced SiC ceramic matrix composites with different fiber orientations mating with ceramic balls. The results show that fiber orientation significantly affects the friction and wear properties of the composites. Pads with randomly arranged fibers demonstrate better friction stability and lower wear volume, potentially suitable for bearing material applications. The research also explores the factors influencing the formation of continuous tribo-film and identifies abrasive wear and oxidation wear as the dominant wear mechanisms for the friction pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sergey Nikolaevich Perevislov, Ilya Evgenievich Arlashkin, Valentina Leonidovna Stolyarova
Summary: This paper describes the synthesis and sintering of MAX phases in the Zr-Al-C system. Different mixtures of initial Zr/Al/C and Zr/Al/ZrC powders were used to synthesize Zr2AlC and Zr3AlC2 MAX phases. The highest content of Zr3AlC2 MAX phase was obtained using a component ratio of 1:1.5:2-51.1 vol.% of Zr/Al/ZrC powders.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weijia Luo, Xubin Wang, Baiheng Bai, Jianli Qiao, Xingcong Chen, Yongzheng Wen, Jingbo Sun, Lingxia Li, Ji Zhou
Summary: This study successfully establishes the relationship between internal strain and dielectric loss by synthesizing and designing specific structure of tungsten bronze ceramics, and concludes that controlling internal strain can effectively reduce dielectric loss. This research is of great significance for the development of future all-ceramic non-Hermitian devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Santanu Mondal, Juan Diego Shiraishi Lombard, Sreenivasulu Gollapudi, Carolina Tallon, Jie-Fang Li, Dwight Viehland
Summary: Ultrafast high-temperature sintering (UHS) is an effective method for rapidly densifying ZrB2 powders. The final grain size increases with longer sintering duration. X-ray diffraction and energy-dispersive spectroscopy show crystalline phase and compositional uniformity in ZrB2 after UHS.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
JiaNan Wang, ZhiQiang Li, YongZheng Zhu, Yao Liang, Yan Cui, HuaLong Tao, Bo Song, Alexander Nikiforov, ZhiHua Zhang
Summary: First-principles calculations were performed to investigate the crystal structure, electronic structure, and ion diffusion of sulfur-doped Li2FeSiO4. The results showed that sulfur doping can improve the electronic conductivity and reduce the energy barrier for ion diffusion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaodi Dai, Serdar Aydin, Mert Yuecel Yardimci, Gunter Reekmans, Peter Adriaensens, Geert De Schutter
Summary: This study investigates the rheological behavior, solidification process, and nanostructure changes of sodium hydroxide-activated slag (NH-AAS) and sodium silicate-activated slag (SS-AAS) pastes over time. The results show that NH-AAS and SS-AAS release similar heat and reach a similar reaction degree at their initial setting times, but have different gel structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yifeng Huang, Xin Wang, Yinchang Ma, Xiang Lv, Jiagang Wu
Summary: This study investigates the effect of K/Na ratio on the phase structure, ferroelectric domains, and piezoelectric properties of potassium sodium niobate (KNN)-based ceramics. It reveals that high Na+ content leads to large ferroelectric domains, while high K+ content results in local polarity heterogeneity and distinct dielectric relaxational behavior. The balanced local polarity and stress heterogeneities contribute to improved piezoelectricity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zun Xia, Yedong Rong, Hao Li, Ye Dong, Hongbo Yu, Jie Xu, Xiuhui Wang, Jinlong Yang
Summary: This study presents the synthesis of hollow MgAl2O4 particles in situ within porous ceramics, resulting in volume expansion and the formation of a hierarchical pore structure, leading to a significant improvement in compressive strength.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Honglong Wang, Zhiguo Sun, Faming Xia, Chenguang Yang, Xiaoguang Wang, Jintang Li, Linxu Jiang
Summary: In this study, the micro-geometry morphology variation and microstructural transformation mechanism of muscovite crystals under electron beam irradiation were explored. The results revealed the instability of the muscovite lattice under irradiation, as well as the expansion and shrinkage of the lattice with increasing dose. The study also identified changes in chemical structure and other mechanisms involved. These findings are significant for the design of radiation-resistant silicate materials and the manufacturing of electronic components used in the aerospace industry.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
