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Oxygen Evolution Reaction of Amorphous/Crystalline Composites of NiFe(OH)/NiFeO.
ACS Nano
January 2025
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
Orbital structures are strongly correlated with catalytic performance, whereas their regulation strategy is still in pursuit. Herein, the Fe 3 and O 2 orbital hybridization was optimized by controlling the content of amorphous NiFe(OH) (a-NiFe(OH)), which was grown in situ on crystalline NiFeO (c-NiFeO) using an ultrasonic reduction method. The results of electron energy loss spectroscopy (EELS) and X-ray absorption spectra (XAS) revealed that the Fe-O orbital hybridization in a-NiFe(OH) is effectively strengthened by jointing with the adjacent oxygen (O) in c-NiFeO, which is further confirmed by the higher antibonding orbital energies based on density functional theory (DFT) calculations.
View Article and Find Full Text PDFNanoscopic acoustic vibrational dynamics of a single virus captured by ultrafast spectroscopy.
Proc Natl Acad Sci U S A
January 2025
Department of Chemistry, Michigan State University, East Lansing, MI 48824.
The natural vibrational frequencies of biological particles such as viruses and bacteria encode critical information about their mechanical and biological states as they interact with their local environment and undergo structural evolution. However, detecting and tracking these vibrations within a biological context at the single particle level has remained elusive. In this study, we track the vibrational motions of single, unlabeled virus particles under ambient conditions using ultrafast spectroscopy.
View Article and Find Full Text PDFThe Effects of Ultrasound on the Rehydration of Konjac Glucomannan/Soy Protein Isolate Gel and Simulation of Gas-Liquid Interface Evolution During the Rehydration Process.
Foods
December 2024
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Soy protein isolate (SPI) possesses potential gelling properties, making it suitable for gel-based applications. However, the gel network stability and mechanical properties of SPI are relatively poor and can be improved through modifications or by combining it with other polymers, such as Konjac Glucomannan (KGM). Combining SPI with KGM can overcome the poor gel network stability and mechanical properties of SPI, but it reduces the water-absorbing capacity of the gel network after drying, which affects the quality characteristics of plant-based protein rehydrated foods and limits the economic feasibility of soy protein foods.
View Article and Find Full Text PDFDevelopment of Single-Walled Carbon Nanotube-Based Electrodes with Enhanced Dispersion and Electrochemical Properties for Blood Glucose Monitoring.
Biosensors (Basel)
December 2024
Department of Gyedang College of General Education, Sangmyung University, 31 Sangmyungdae-Gil, Dongnam-Gu, Cheonan 31066, Republic of Korea.
The evolution of high-performance electrode materials has significantly impacted the development of real-time monitoring biosensors, emphasizing the need for compatibility with biomaterials and robust electrochemical properties. This work focuses on creating electrode materials utilizing single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs), specifically examining their dispersion behavior and electrochemical characteristics. By using ultrasonic waves, we analyzed the dispersion of CNTs in various solvents, including N, N-dimethylformamide (DMF), deionized water (DW), ethanol, and acetone.
View Article and Find Full Text PDFIn Situ Ultrasonic Characterization of Hydrogen Damage Evolution in X80 Pipeline Steel.
Materials (Basel)
December 2024
School of Materials Science & Engineering, Key Laboratory of Advanced Technologies of Materials (Ministry of Education), Southwest Jiaotong University, Chengdu 610031, China.
A nondestructive evaluation of the hydrogen damage of materials in a hydrogen environment is important for monitoring the running conditions of various pieces of equipment. In this work, a new thermostatic electrolytic hydrogenation in situ ultrasonic test system (In Situ TEH-UT) was developed. The system operates by combining cross-correlation delay estimation and frequency domain amplitude estimation and hence improves measurement accuracy with respect to ultrasonic propagation time and amplitude, allowing in situ ultrasonic evaluation of the hydrogen-charging process in X80 pipeline steel.
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