A5101639281- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Metalloenzymes and iron-sulfur proteins
- CO2 Reduction Techniques and Catalysts
- Fuel Cells and Related Materials
- Porphyrin and Phthalocyanine Chemistry
- Electrochemical Analysis and Applications
- Iron oxide chemistry and applications
- Spectroscopy and Laser Applications
- Advancements in Solid Oxide Fuel Cells
- Minerals Flotation and Separation Techniques
- Clay minerals and soil interactions
- Analytical Chemistry and Sensors
- Machine Learning in Materials Science
- Acoustic Wave Resonator Technologies
- Conducting polymers and applications
- Electrochemical sensors and biosensors
- Gas Sensing Nanomaterials and Sensors
- Photodynamic Therapy Research Studies
- Nanoplatforms for cancer theranostics
- Photonic and Optical Devices
- Innovative Microfluidic and Catalytic Techniques Innovation
- Mechanical and Optical Resonators
Shaanxi Normal University
2020-2023
Institute of Microelectronics
2021-2023
Agency for Science, Technology and Research
2021-2023
National University of Mongolia
2023
Minzu University of China
2023
Simon Fraser University
2022
Memorial University of Newfoundland
2018
Planar Ni(II) porphyrinoid complexes have been widely used in electrochemical carbon dioxide reduction reaction and oxygen as well hydrogen evolution (HER). However, nonplanar tetra-pyrrolic not thoroughly investigated thus far. In this study, three highly bent bis(dipyrrin) synthesized to investigate their structure, electronic property, electrocatalytic HER activities. Cyclic voltammetry thin-layer UV-visible spectroelectrochemistry studies revealed four redox processes, yielding two...
Developing highly efficient electrocatalysts for the CO2 reduction reaction (CO2RR) has attracted increasing interest in past decade. Herein, we report on design and synthesis of Fe porphyrin 1 with an appended N,N-di(2-picolyl)ethylenediamine (DPEN) unit that boosts electrocatalytic activity CO2-to-CO conversion acetonitrile water as proton source. By mimicking carbon monoxide dehydrogenase (CODH), poly-pyridine/amine units located at active site to form hydrogen-bonded water-containing...
A series of first-row transition metal complexes tetrakis(pentafluorophenyl)porphyrin (1), denoted as 1-M (M [Formula: see text] Mn, Fe, Co, Ni, Cu, and Zn), were synthesized examined electrocatalysts for the hydrogen evolution reaction (HER). All these porphyrins shown to be active HER in acetonitrile using trifluoroacetic acid (TFA) proton source. The molecular nature stability when functioning catalysts confirmed, all gave Faradaic efficiency >97% H 2 generation during bulk...
Elucidating the effects of various structural components on energy-related small molecule activation is fundamental and practical significance. Herein inhibition effect positively charged substituents hydrogen evolution reaction (HER) was reported. With use Cu porphyrins 1-5 containing different numbers locations substituents, it demonstrated that their electrocatalytic HER activities significantly decreased when more cationic units were located close to ion: icat /ip (icat catalytic peak...
Electrochemical pressure impedance spectroscopy (EPIS) analyses the voltage response of a polymer electrolyte fuel cell (PEFC) as function an applied signal in frequency domain. EPIS is similar to electrochemical (EIS) and its development was inspired by diagnostic capabilities latter. The introduced this work modulates cathode PEFC with sinusoidal through use back-pressure controller, monitors while holding at constant current. A wave propagates along flow field channels because modulation....
Developing electrocatalysts with high activity and selectivity for the oxygen reduction reaction (ORR) has attracted increasing interest in past decades. The many imidazole residues located at active site of cytochrome c oxidases (CcOs) play crucial roles facilitating selective dioxygen to water. As inspired by nature, we herein reported on synthesis [Formula: see text] corrole 1 hanged a biologically relevant imidazolium group its electrocatalytic ORR features both acidic alkaline...
<p indent="0mm">The development of H<sub>2</sub>-O<sub>2</sub> fuel cell technology is an important strategy to solve the current energy problem. The catalytic efficiency oxygen reduction reaction (ORR) on cathode a key factor that affects overall conversion efficiency. Inspired by cytochrome c oxidases (<italic>Cc</italic>Os) in nature, researchers have studied many metal macrocyclic porphyrin complexes as ORR catalysts which show excellent electrocatalytic activity for ORR. This review...
CO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> gas sensing responses are measured using our in-house fabricated CMOS-MEMS ScAlN-based pyroelectric detector with 12% Sc doped concentration. Leveraging on mid-IR absorption behavior of caused by interaction light at 4.26 µm wavelength, successfully detect response ranging from concentrations 5000 ppm down to 200 ppm. Gas channel lengths varied 6 cm 10 and their respective measured....
Fuel cells are versatile, low-emission alternative energy sources, but their optimization and failure analyses complex due to black-box nature. Conventional in-situ diagnostic techniques such as electrochemical impedance spectroscopy (EIS), widely used deconvolute transient processes within operating fuel cells. EIS is invaluable understanding some of these processes, other the cell, mass transport individual water fluxes, get overshadowed hard detect. In an effort provide information that...
Fuel cells are versatile, low-emission alternative energy sources, but their optimization and failure analyses complex due to black-box nature. Conventional in-situ diagnostic techniques such as electrochemical impedance spectroscopy (EIS), widely used deconvolute transient processes within operating fuel cells. EIS is invaluable understanding some of these processes, other the cell, mass transport individual water fluxes, get overshadowed hard detect. In an effort provide information that...
Microelectromechanical system (MEMS)-based thermal emitter is a key component in an optical sensor to provide broadband emission at mid-infrared wavelengths, where lot of molecules have their unique absorption profile. However, the from MEMS typically fixed specific spatial coordinate. In this work, with piezoelectric actuation realize active tuning demonstrated. Thermal comes doped silicon layer acting as resistive heater. Piezoelectric enabled by aluminum nitride on designed cantilever....
Hematite occurs ubiquitously in nature and is important for controlling the migration conversion of various nutrients pollutants. The morphology hematite a key factor affecting its reactivity. Naturally occurring usually contains an amount aluminum (Al) impurities. Al has significant effect on hematite. However, details Al-bearing formation role morphological evolution remain poorly understood. In this work, series were synthesized using hydrothermal methods. Their growth process was...