A5024053907- Advanced MRI Techniques and Applications
- Advanced NMR Techniques and Applications
- NMR spectroscopy and applications
- Atomic and Subatomic Physics Research
- Solid-state spectroscopy and crystallography
- Electrochemical Analysis and Applications
- Electron Spin Resonance Studies
- Microfluidic and Capillary Electrophoresis Applications
- Fuel Cells and Related Materials
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Innovative Microfluidic and Catalytic Techniques Innovation
- Landfill Environmental Impact Studies
- Physics of Superconductivity and Magnetism
- Advanced Neuroimaging Techniques and Applications
- Electrochemical sensors and biosensors
- Wireless Power Transfer Systems
- Nuclear Physics and Applications
- Ionic liquids properties and applications
- Catalysis for Biomass Conversion
- Catalytic Processes in Materials Science
- Magnetic Properties and Applications
- Advanced Electrical Measurement Techniques
- Recycling and Waste Management Techniques
- Molecular spectroscopy and chirality
Xiamen University
2016-2025
Xiamen University of Technology
2020-2023
Jimei University
2023
Collaborative Innovation Center of Chemistry for Energy Materials
2018
University of California, Los Angeles
2016
Glycerol, a byproduct of biodiesel production, is an industrial waste because its excess yield. Electrooxidation glycerol promising way to utilize glycerol—through harvesting electric energy as fuels in fuel cell or hydrogen sacrificial agent electrolysis cell—while generating valuable chemicals. Here, we report detailed mechanistic study the electrooxidation reaction (GOR) on series Pt/C, PtxRuy/C, and PtxRhy/C nanocatalysts synthesized by NaBH4 reduction. The EC cyclic voltammetry...
Abstract Magnetic resonance (MR) technology has been widely employed in scientific research, clinical diagnosis and geological survey. However, the fabrication of MR radio frequency probeheads still face difficulties integration, customization miniaturization. Here, we utilized 3D printing liquid metal filling techniques to fabricate integrative for experiments. The 3D-printed probehead with micrometer precision generally consists coils, customized sample chambers circuit interfaces. We...
The integration of nuclear magnetic resonance (NMR) and microfluidic technology provides an excellent detection method for detecting nanoscale micro-samples analysing intermediates during in situ reaction processes. However, the non-cylindrical symmetric structure chips micro-coils, along with susceptibility mismatches, results a complex distorted field reduces spectral resolution. Traditional spherical harmonic shimming methods coils are global nature target area, forming distributions...
The triple‐phase boundary (TPB) is a complex interface where gas, liquid, and solid phases converge, crucially regulating the efficiency performance of many electrochemical devices such as fuel cells batteries. However, conventional characterization techniques struggle to capture dynamic processes flooding at TPB. To address this, we develop operando magnetic resonance imaging (EC‐MRI), an inherently non‐invasive technique sensitive 1H, which probes both bulk regions, enabling real‐time...
The triple‐phase boundary (TPB) is a complex interface where gas, liquid, and solid phases converge, crucially regulating the efficiency performance of many electrochemical devices such as fuel cells batteries. However, conventional characterization techniques struggle to capture dynamic processes flooding at TPB. To address this, we develop operando magnetic resonance imaging (EC‐MRI), an inherently non‐invasive technique sensitive 1H, which probes both bulk regions, enabling real‐time...
We report the design and performance of a two-chamber thin-layer electrochemical device for in situ potential-dependent liquid NMR measurement. Liquid spectra, simultaneously recorded with cyclic voltammetry (CV), have been obtained to reveal molecular changes potentials scanning. As proof concept, redox properties 1,4-benzoquinone based systems investigated, π dimerization has identified by combining both ex analyses. This work provides new approach spectroelectrochemistry, which will...
With the strength of liquid nuclear magnetic resonance (NMR) to noninvasively and specifically realize structural elucidation quantitative analysis small organic molecules, in principle, situ electrochemical-NMR (EC-NMR) possesses great advantages for detecting dissolved species during electrochemical process. However, intrinsic incompatibilities between coupling techniques as well sophisticated setups modification still limit applications toward a wide range. To overcome these bottlenecks,...
Lately, polymers as electrochemical catalysts have attracted intense interest. As two promising candidates, herein, electrochemically deposited polyaniline and poly(aspartic acid) thin film materials been fabricated on glassy carbon electrodes. Through multiple characterizations, including attenuated total reflection Fourier transform infrared spectrophotometry, cyclic voltammetry, impedance spectroscopy, proton nuclear magnetic resonance, essential properties of these electro-synthesized...
Asymmetric hydrogenation plays an essential role for both academic research and industry to produce enantiomeric pure chiral molecules. Although nuclear magnetic resonance (NMR) is powerful in determining the yields of hydrogenation, it still challenging use NMR chirality-related analysis. Herein, we applied parahydrogen-induced hyperpolarization (PHIP) determine enantioselectivity asymmetric absolute chirality products. We hyperpolarized two types unsaturated amino acid precursors, i.e.,...
Enhancing the sensitivity of nuclear magnetic resonance (NMR) technology has been focus NMR research for decades, which offers potential to significantly expand its applications in chemistry, biology, and medical imaging. Parahydrogen-induced polarization (PHIP) emerges as a cost-effective approach substantially enhance NMR. Nevertheless, amplification 1H signal PHIP is susceptible interference from thermal state signal. Employing RASER (radiofrequency by stimulated emission radiation)...
During the past several decades, inexpensive compact nuclear magnetic resonance (NMR) instruments have been widely used for on-site detections of chemical identity and sample analyses in industrial applications. In general, via shim coils control strategies, automatic search shimming methods are capable improving field uniformity so that optimized signals can be acquired particularly suited rapid NMR instruments. However, because these inherently endure inefficiency multidimensional shims...
Nuclear spin hyperpolarization derived from parahydrogen is a technique for enhancing nuclear magnetic resonance (NMR) sensitivity. The key to experiments achieve rapid transfer and detection minimize relaxation losses, while also avoiding bubbles or turbulence guarantee high spectral resolution. In this article, we describe an experimental approach the interleaved joint modulation of parahydrogen-induced polarization NMR. We provide schematic diagrams parahydrogen-based polarizer with in...
High spectral resolution in nuclear magnetic resonance (NMR) is a prerequisite for achieving accurate information relevant to molecular structures and composition assignments. The continuous development of superconducting magnets guarantees strong homogeneous static fields satisfactory resolution. However, there exist circumstances, such as measurements on biological tissues heterogeneous chemical samples, where the field homogeneity degraded line broadening seems inevitable. Here we propose...
Utilizing para-hydrogen (p-H2)-induced hyperpolarization to increase the sensitivity of nuclear magnetic resonance, especially signal amplification by reversible exchange (SABRE), has been widely studied. Here, we achieved exchangeable protons in methanol-d4 introducing dynamic covalent bonds as following SABRE process. To release hyperpolarized CD3OH, pyridine-based ligands with aldehyde groups underwent acetal between and hydroxyl CD3OH after being first SABRE. Our mechanistic study...
For the purpose of acquiring highly sensitive and differential spectra in situ electrochemical nuclear magnetic resonance (EC-NMR) spectroscopy, uniform distributions amplitudes phases radio frequency (RF) fields sample are needed for consistent flip angles all nuclei under scrutiny. However, intrinsic electromagnetic incompatibility exists between such requirements with electric properties conductive material an electrolytic cell, including metallic electrodes ionic electrolytes. This...
Nuclear magnetic resonance (NMR) spectroscopy serves as an important tool for both qualitative and quantitative analyses of various systems in chemistry, biology, medicine. However, applications one-dimensional 1H NMR are often restrained by the presence severe overlap among different resonances. The advent two-dimensional (2D) constitutes a promising alternative extending crowded resonances into plane thereby alleviating spectral congestions. enhanced ability discriminating is achieved at...
The low-field nuclear magnetic resonance (LF NMR) system allows rapid, on-site, and nondestructive detection of molecular structures using portable equipment. However, LF NMR suffers from limited resolution, low sensitivity, poor stability, resulting in peak overlap limitations practical applications. In this work, an accelerated spectroscopic method that combines nonuniform sampling (NUS) with a fast accurate low-rank reconstruction is proposed to rapidly acquire faithfully reconstruct...
The integration of electrochemistry with nuclear magnetic resonance (NMR) spectroscopy recently offers a powerful approach to understanding oxidative metabolism, detecting reactive intermediates, and predicting biological activities. This combination is particularly effective as electrochemical methods provide excellent mimics metabolic processes, while NMR precise chemical analysis. already widely utilized in the quality control pharmaceuticals, foods, additives metabolomic studies....