A5088206569- Molecular Junctions and Nanostructures
- Catalysis for Biomass Conversion
- Biofuel production and bioconversion
- Graphene research and applications
- Supercapacitor Materials and Fabrication
- 2D Materials and Applications
- Catalysis and Hydrodesulfurization Studies
- Quantum and electron transport phenomena
- biodegradable polymer synthesis and properties
- Advanced biosensing and bioanalysis techniques
- Carbon dioxide utilization in catalysis
- Lignin and Wood Chemistry
- Proteins in Food Systems
- Surface Chemistry and Catalysis
- Blasting Impact and Analysis
- Electron Spin Resonance Studies
- Polymer composites and self-healing
- Plant-Microbe Interactions and Immunity
- Retinal Imaging and Analysis
- Conducting polymers and applications
- Nanopore and Nanochannel Transport Studies
- Organic Electronics and Photovoltaics
- Fullerene Chemistry and Applications
- CO2 Reduction Techniques and Catalysts
- Microencapsulation and Drying Processes
Xiamen University
2019-2024
Zhengzhou University
2015-2024
Shihezi University
2024
Xinjiang Production and Construction Corps
2024
Qingdao National Laboratory for Marine Science and Technology
2024
Collaborative Innovation Center of Chemistry for Energy Materials
2020-2023
Beijing Tongren Hospital
2021-2022
Capital Medical University
2021-2022
Eye Center
2022
State Key Laboratory of Food Science and Technology
2012-2014
Two-dimensional van der Waals heterojunctions (2D-vdWHs) stacked from atomically thick 2D materials are predicted to be a diverse class of electronic with unique properties. These properties can further tuned by sandwiching monolayers planar organic molecules between form molecular 2D-vdWHs (M-2D-vdWHs), in which electricity flows cross-plane way one layer the other via single layer. Using newly developed break junction technique, combined density functional theory calculations, we show that...
A series of metal-modified phosphotungstates were prepared and performed for direct synthesis ethyl levulinate from fructose in ethanol. Considering the cost catalysts, catalytic activity easy separation catalysts together, K-HPW-1 was chosen as most suitable catalyst fructose. high yield 64.6 mol% obtained at 150 °C within 2 h The introduction low polar toluene a co-solvent improved to 68.7 mol%. recovered remained with converted above 50 after being used five times. Moreover, generality...
Single-molecule electronics offer a unique strategy for the miniaturization of electronic devices. However, existing experiments are limited to conventional molecular junctions, where molecule anchors electrode pair with linkers. With such rod-like configuration, minimum size device is defined by length molecule. Here, incorporating single two single-layer graphene electrodes, we fabricated layer-by-layer single-molecule heterojunctions called two-dimensional van der Waals (M-2D-vdWHs),...
The tunneling current through the single-molecule junctions principally offers ultimate solution for chemical and biochemical sensing via interactions between probes target analytes at level. However, it remains unexplored to achieve sensitive selective detection of targeted using junction techniques due challenge in quantitative evaluation sensitivity selectivity. Herein, we demonstrate a sensor highly nitrobenzene explosives scanning microscope break (STM-BJ). Taking advantage π–π stacking...
A series of supported phosphotungstic acid (H3PW12O40, HPW) catalysts, including HPW/β, HPW/Sn-β, HPW/H-Y, HPW/H-ZSM-5, HPW/USY, HPW/ReUSY, and HPW/SBA-15, were prepared using an impregnation method for alcoholysis fructose to ethyl levulinate in ethanol.Among these HPW/H-ZSM-5 showed the highest catalytic activity, yield from increased with increasing loading.The reached 43.1% at 160 °C 2 h over 20 wt.% solid catalyst could be reused least three times.EL yields 19.1%, 27.3%, 37.4%, 8.7%...
Akebia trifoliata var. australis seed oil (ASO) was used as an edible in China. However, in-depth research studies on ASO have yet to be conducted for production of plastic fats food industry. In this work, immobilized lipase from Thermomyces lanuginosus (TL IM) employed catalyze palm stearin (PS) with different ratios a laboratory-scale operation at 60 °C. The physical properties [e.g., fatty acid profile, slip melting point (SMP), solid fat content (SFC), polymorphic form, and...
Artificial intelligence approach can be used to solve complicated process problems. A hybrid methodology comprising artificial neural network (ANN) and genetic algorithms (GA) was utilized model optimize the methanolysis of waste peanut shells. Acid catalytic shells into liquid biofuel-methyl levulinate (ML) investigated. The combination sulfuric acid with extremely low concentration Al2(SO4)3 identified as efficient mixed system. ML yield under optimal conditions optimized by response...
Oxidation of formate to CO2 is catalyzed via the donation electrons from dehydrogenase (FDH) nicotinamide adenine dinucleotide (NAD+), and thus charge transport characteristics FDH become essential but remain unexplored. Here, we investigated through single-enzyme junctions using scanning tunneling microscope break junction technique (STM-BJ). We found that coupling NAD+ with boosts by ∼2,100%, conductance highly correlates enzyme activity. The combined flicker noise analysis demonstrated...
The nitrogen doping of graphene leads to heterojunctions with a tunable bandgap, suitable for electronic, electrochemical, and sensing applications. However, the microscopic nature charge transport properties atomic-level nitrogen-doped are still unknown, mainly due multiple sites topological diversities. In this work, we fabricated atomically well-defined N-doped investigated cross-plane through these reveal effects on their electronic properties. We found that different number atoms...
The van der Waals interactions (vdW) between π-conjugated molecules offer new opportunities for fabricating heterojunction-based devices and investigating charge transport in heterojunctions with atomic thickness. In this work, we fabricate sandwiched single-molecule bilayer-graphene junctions via vdW characterize their electrical properties by employing the cross-plane break junction (XPBJ) technique. experimental results show that through is determined size layer number of molecular...
We reported a new method capable of adjusting the lattice structure solid surfaces with sub-angstrom precision and achieved in situ continuous control over electrochemical activity.
Glycerol levulinate ketal (GLK) is a novel biobased chemical compound with great potential for industrial applications, especially in the areas of green solvents and polymeric materials. For first time, this study investigated synthesis GLK through acid-catalyzed ketalization at extremely low acid contents between two platform chemicals, methyl (ML) glycerol, fully evaluated effect molar ratio ML to reaction temperature, catalyst amount, vacuum degree, time on glycerol conversion yield....
The physicochemical properties of coix seed oil (CSO) liposomes prepared by five different methods were evaluated for morphology, encapsulating efficiency, particle size, storage stability, and in vitro release. preparation resulted several types vesicles with properties. type was closely related to leakage pattern, which affected the stability release profiles. Ethanol injection method best choice preparing safe stable controlled mechanisms might account diffusion CSO, Higuchi most suitable...
The host-guest interaction acts as an essential part of supramolecular chemistry, which can be applied in confined reaction. However, it is challenging to obtain the dynamic process during reactions below micromolar concentrations. In this work, a new method provided characterize dimerization guest 1,2-bis(4-pyridinyl) ethylene host cucurbit[8]curil using scanning tunneling microscope-break junction (STM-BJ) technique. reaction kinetics quantitatively by nuclear magnetic resonance (NMR) and...
Abstract BACKGROUND Methyl levulinate (ML) is a promising green candidate for bio‐based diesel fuels and fuel additives. An effective method synthesizing ML from levulinic acid (LA) catalyzed by cheap metal salt catalyst under mild conditions was developed. A series of salts were screened the synthesis LA, aluminum chloride identified as suitable this process. RESULTS The effects loading, molar ratio methanol to reaction temperature time on LA conversion yield investigated. response surface...
Electrodes play an essential role in controlling electrode-molecule coupling. However, conventional metal electrodes require linkers to anchor the molecule. Van der Waals interaction offers a versatile strategy connect electrode and molecule without groups. Except for graphene, potential of other materials as fabricate van molecular junctions remains unexplored. Herein, we utilize semimetallic transition dichalcogenides (TMDCs) 1T'-WTe2 WTe2/metalated tetraphenylporphyrin (M-TPP)/WTe2 via...