Article
Chemistry, Physical
Johnbosco Yesuraj, Hye-One Lee, Mathan Kumar Pandiyan, Jayachandiran Jayavelu, Muthuraaman Bhagavathiachari, Kibum Kim
Summary: This study demonstrates the preparation of hexagon-shaped spinel Co3O4 nanoplates using a DNA template and explores their applications in energy storage and electrocatalysis.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Environmental Sciences
Bathula Babu, Bhusankar Talluri, Thirumala Rao Gurugubelli, Jonghoon Kim, Kisoo Yoo
Summary: The nitrogen-annealing environment significantly improves the electrochemical performance of SnO2 quantum dots, leading to higher specific capacitance and photocurrent compared to pristine samples.
Article
Engineering, Electrical & Electronic
Ala Manohar, V. Vijayakanth, S. V. Prabhakar Vattikuti, Ki Hyeon Kim
Summary: The mixed Ni-Zn nanoparticles with noteworthy shape are synthesized using a solvothermal reflux technique. The crystalline spinel cubic structure, morphology, and correct stoichiometric element ratio are confirmed by various analysis techniques. Electrochemical performances of the electrode material are investigated using cyclic voltammetry and Galvanostatic charge-discharge techniques. Among the electrodes, the Ni0.7Zn0.3Fe2O4 (ZNF3) electrode exhibits the highest specific capacitance of 152 F/g at a current density of 2 A/g, and the ZNF3 electrode also shows a higher photocurrent density based on the linear sweep voltammetry curve.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Electrochemistry
Marzieh Rashidi, Foad Ghasemi
Summary: The introduction of pristine and thermally oxidized MoS2 (O@MoS2) based hybrids enhances capacitive performance, making it suitable for various electrochemical applications with significant improvements in energy storage capacity.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Zhuofeng Hu, Weiqing Guo
Summary: This study investigates the impact of supercapacitance at the electrode/electrolyte interface on the performance of photoelectrochemical water oxidation. By increasing the supercapacitance of TiO2 nanowire array photoanode, the separation rate of electron-hole pairs and the water oxidation rate are enhanced, leading to a significant increase in photocurrent density. Increasing the supercapacitance of the photoanodes is a promising approach to improve the efficiency of PECs, highlighting the importance of supercapacitance at the interface for PECs.
CHINESE CHEMICAL LETTERS
(2021)
Article
Environmental Sciences
Ganesh Koyyada, Burragoni Sravanthi Goud, Kamakshaiah Charyulu Devarayapalli, Jaesool Shim, S. V. Prabhakar Vattikuti, Jae Hong Kim
Summary: In this study, mixed-phase BiFeO3/Fe2O3 (BF-M) nanocomposite was successfully prepared and characterized. The performance of the BF-M catalyst was evaluated in photoelectrochemical water oxidation and photocatalytic dye degradation analysis. The results showed that the BF-M photocatalyst exhibited higher degradation efficiency and photocurrent density compared to the partials Fe2O3 with BiFeO3 (BF-P), which is attributed to the formation of a mixed-phase nano structure interface.
Article
Engineering, Electrical & Electronic
Bairui Tao, Xiaoqin Li, Zhidong Ye, Fengjuan Miao, Yu Zang
Summary: Hybrid transition metal oxides and redox graphene nanocomposites are synthesized using a multistep hydrothermal method to improve the electrochemical properties of ZnO/MoS2/rGO nanocomposites. The resulting material shows excellent performance as a dual-function electrode in solid-state flexible supercapacitors and amperometric photochemical CO2 gas sensors, with a wide linear sensing range, high sensitivity, fast recovery and response time, and low detection limit. Additionally, the ZnO/MoS2/rGO electrodes exhibit high specific capacitance, significant rate performance, and long cycle life, making them promising for next-generation electrochemical gas sensors and high-performance energy storage.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ying Liu, Jianmin Lu, Qianxiao Zhang, Yajie Bai, Xuliang Pang, Song Wang, Hongye Bai, Weiqiang Fan
Summary: The Ag-decorated ultrathin Ni-MOF on Cu2O heterostructure was successfully fabricated, achieving a high NH3 yield rate and faradaic efficiency. The charge-transfer dynamics were studied using ultrafast transient absorption spectroscopy, and DFT calculations helped further understand the nitrogen reduction reaction mechanism.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Ping Yang, Xiangfei Sun, Shaohua Wang, Honglong Xing
Summary: In this study, hexagon-like NiCoP/Co(PO3)2 composites supported on Ni foam were prepared and exhibited exceptional performance in supercapacitors and electrocatalysis. The obtained composites offer short ion diffusion distance, numerous reaction active sites and fast electron conduction rate, enhancing the overall performance. The materials also showed promising results in terms of specific capacity, rate capacity, long-term cycling stability, energy density, and electrocatalytic performance for overall water splitting applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Analytical
Lina Zhang, Qingkun Kong, Li Li, Yanhu Wang, Shenguang Ge, Jinghua Yu
Summary: A direct-readout photoelectrochemical lab-on-paper device was established for highly sensitive detection of ATP, utilizing a coupled electricity generating system and paper supercapacitors. The device utilized outstanding photoelectric properties and as-generated electricity from electrochemical redox reactions for signal amplification, achieving detection of target ATP concentration with improved signal response efficiency.
Article
Mechanics
Paolo Amore, Mauricio Carrizalez, Ulises Zarate
Summary: We provide evidence that regular polygons with sigma = 6j sides (with j = 2, 3, ...) can be packed with congruent disks in highly symmetrical configurations. These configurations have maximal density for small values of N and are invariant under rotations of pi/3. The algorithms we have devised are efficient in generating these configurations inside regular polygons and can be used to fully characterize the general properties of the configurations.
Article
Chemistry, Multidisciplinary
Hongli Cheng, Dandan Wang, Liping Chen, Zhenyao Ding, Xinjian Feng
Summary: In this study, a solid-liquid-air triphase bio-photocathode based on a superhydrophobic three-dimensional porous micro-nano-hierarchical structured CuxO@TiO2 film was reported, which can accurately detect H2O2. The triphase photoelectrochemical system provides a constant and sufficiently high oxygen concentration in the oxygen-rich interface microenvironment. The 3D porous micro-nano-hierarchical structures with abundant active catalytic sites and a multidimensional electron transport pathway greatly enhance the kinetics of the enzymatic reaction and H2O2 cathodic reaction, resulting in a broader linear detection range and higher accuracy compared with the conventional solid-liquid diphase system.
Article
Electrochemistry
Rebecca Dhawle, John Vakros, Vassilios Dracopoulos, Ioannis D. Manariotis, Dionissios Mantzavinos, Panagiotis Lianos
Summary: A photocatalytic fuel cell has been developed with an added supercapacitor electrode for energy storage. The presence of the supercapacitor significantly increases hydrogen peroxide production, demonstrating the importance of energy storage functionality in practical applications.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Takayuki Nakane, Takashi Naka, Minako Nakayama, Tetsuo Uchikoshi
Summary: The humidity sensitivity of chemically synthesized ZnAl2O4/Al devices was evaluated in this study. The ZnAl2O4/Al device was successfully synthesized using chemical techniques alone. The device has shown good sensitivity and repeatability to humidity, as measured by electrical capacitance and resistivity. Furthermore, the synthesis technique has the potential to improve the manufacturing process of devices with complex structures and large surface areas.
Article
Geosciences, Multidisciplinary
A. Sanchez-Lavega, E. Garcia-Melendo, T. del Rio-Gaztelurrutia, R. Hueso, A. Simon, M. H. Wong, K. Ahrens-Velasquez, M. Soria, T. Barry, C. Go, C. Foster
Summary: The study reveals that Saturn's polar hexagonal wave structure is stable and may be directly related to the overall rotation of the planet. Several convective storms occurred in the hexagonal region of Saturn from 2018 to 2020, but there were no significant changes in the zonal profile of Saturn's polar winds.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.