A5100381014- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Graphene research and applications
- Corrosion Behavior and Inhibition
- Crystallography and molecular interactions
- Concrete Corrosion and Durability
- Hydrogen Storage and Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced Polymer Synthesis and Characterization
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- 2D Materials and Applications
- Advanced Nanomaterials in Catalysis
- Nanoparticle-Based Drug Delivery
- Ammonia Synthesis and Nitrogen Reduction
- Polymer composites and self-healing
- Chalcogenide Semiconductor Thin Films
- Quantum and electron transport phenomena
- Block Copolymer Self-Assembly
- Catalytic Processes in Materials Science
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Photocatalysis Techniques
- Nanoplatforms for cancer theranostics
- Graphene and Nanomaterials Applications
- Phase-change materials and chalcogenides
Chinese Academy of Medical Sciences & Peking Union Medical College
2025
Xi'an High Tech University
2024
Changzhou Vocational Institute of Light Industry
2018-2024
Shandong Academy of Sciences
2023-2024
Qilu University of Technology
2023-2024
Jianghan University
2022-2024
Henan University
2016-2024
Chinese Academy of Sciences
2010-2024
Institute of Applied Ecology
2024
Xianyang Research and Design Institute of Ceramics (China)
2024
Layer number and stacking order of few-layer graphene (FLG) are particular interest since they directly determine the performance graphene-based electronic devices. By analyzing Raman spectra images, quantitative indices extracted to discriminate thickness AB-stacked FLG from single- five-layer graphene; a few key spectral characteristics also identified for with misoriented stacking.
Contact angle goniometry is conducted for epitaxial graphene on SiC. Although only a single layer of exists SiC, the contact drastically changes from 69 degrees SiC substrates to 92 graphene. It found that there no thickness dependence measurements single-, bi-, and multilayer highly ordered pyrolytic graphite (HOPG). After treated with oxygen plasma, level damage investigated by Raman spectroscopy correlation between disorder wettability reported. By using low-power plasma treatment,...
The $1+1$ layer folded graphene sheets that deviate from $AB$ stacking are successfully fabricated and their electronic structures investigated by Raman spectroscopy. Significant blueshift of the 2D band compared to single (SLG) is observed. This attributed SLG-like structure but with slowing down Fermi velocity (as much as $\ensuremath{\sim}5.6%$). Different amount observed for different graphenes, which may correspond twist angle and/or separation between two layers, resulting in...
We report a Raman mapping investigation of strain effects on graphene transparent and flexible substrate. mappings reveal significant red-shift the 2D mode with introduction tensile strain, distribution local in strained graphene, immediate recovery after relaxation. The systematic fitting statistical analysis quantify sensitivity which is comparable to single-walled carbon nanotubes (SWNTs) implies potential as an ultrasensitive sensor. uniaxial will break sublattice symmetry hence changing...
The optical conductivities of graphene layers are strongly dependent on their stacking orders. Our first-principle calculations show that, while the single-layer (SLG) and bilayer (BLG) with Bernal almost frequency-independent in visible region, conductivity twisted (TBG) is frequency-dependent, giving rise to additional absorption features due band folding effect. Experimentally, we obtain from contrast spectra profiles BLG different geometries. Some TBG samples spectra, full agreement our...
We report room temperature ferromagnetism in partially hydrogenated epitaxial graphene grown on 4HSiC(0001). The presence of was confirmed by superconducting quantum interference devices measurements. Synchrotron-based near-edge x-ray absorption fine structure and high resolution electron energy loss spectroscopy measurements have been used to investigate the hydrogenation mechanism origin ferromagnetism. partial induces formation unpaired electrons graphene, which together with remnant...
Abstract Graphene has attracted much attention since its first discovery in 2004. Various approaches have been proposed to control physical and electronic properties. Here, it is reported that graphene‐based intercalation an efficient method modify the properties of few‐layer graphene (FLG). FeCl 3 intercalated FLGs are successfully prepared by two‐zone vapor transport method. This report on full for samples. The features Raman G peak such FLG compounds (FLGIC) good agreement with their...
The stacking faults (deviates from Bernal) will break the translational symmetry of multilayer graphenes and modify their electronic optical behaviors to extent depending on interlayer coupling strength. This paper addresses stacking-induced band splitting folding effect structure twisted bilayer graphene. Based first-principles density-functional theory study, we predict that graphene layers may enable $G$ Raman double resonance in visible excitation range. Such prediction is confirmed...
Abstract Large‐scale synthesis of single‐layer graphene (SLG) by chemical vapor deposition (CVD) has received a lot attention recently. However, CVD AB stacked bi‐layer (BLG) is still challenging. Here, we report BLG homogeneously at large scale thermal CVD. The 2D Raman band splits into four components, suggesting splitting electronic bands due to strong interlayer coupling. in further evidenced the study near infrared absorption and carrier dynamics are probed transient spectroscopy. UV...
We report that heterostructured NiO/Ni nanoparticles remarkably promote the catalytic H2 production of platinum (Pt) nanoclusters toward hydrolysis ammonia borane (AB). A hybrid nanocatalyst composed ultrasmall Pt nanoclusters, nanoparticles, and a carbon nanotube support (defined as Pt@NiO/Ni-CNT) is fabricated. The resultant Pt@NiO/Ni-CNT highly efficient for room-temperature AB, better than Pt@NiO-CNT Pt@Ni-CNT with NiO or Ni alone, Pt@NiO/Ni without CNT support. Optimal catalyst exhibits...
Copper nanoparticle-induced ovarian injury, follicular atresia, apoptosis, and gene expression alterations in female rats Jing Yang,1,* Shifu Hu,1,* Meng Rao,1 Lixia Hu,2 Hui Lei,1 Yanqing Wu,1 Yingying Wang,1 Dandan Ke,1 Wei Xia,1,3 Chang-hong Zhu1,3 1Family Planning Research Institute, Tongji Medical College, Huazhong University of Science Technology, Wuhan, Hubei, 2Department Histology Embryology, Preclinical Medicine Xinxiang University, Henan Province, Xinxiang, 3Reproductive Center,...
Ligand exchange is a critical step for tuning the properties of quantum dots (QDs), as well functionalization wide applications. Previous studies have categorized X-, L-, and Z-types ligands classified ligand process accordingly. Many works investigated influences on optical QDs. To date, however, thermodynamic implications are not understood, mechanisms distinct effects same type unclear. address these issues, reactions oleate-capped CdSe QDs with alkylamines different carbon chain length,...
Precise catalytic regulation of carbon radical generation by a highly active oxygen to abstract the H atom in C-H bond is an effective method for selective activation synthetic chemistry. Herein, we report facile catalyst system with commercially available copper(II)/{PMo12} form tert-butanol intermediate oxidation benzylic bonds. The reaction shows broad range substrates (benzyl methylene, benzyl alcohols) good functional group tolerance and chemical selectivity. corresponding carbonyl...