A5009850728- Graphene research and applications
- Carbon Nanotubes in Composites
- Fullerene Chemistry and Applications
- Supercapacitor Materials and Fabrication
- Diamond and Carbon-based Materials Research
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Electrochemical Analysis and Applications
- Advancements in Battery Materials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Graphene and Nanomaterials Applications
- Electrochemical sensors and biosensors
- Boron and Carbon Nanomaterials Research
- Nanopore and Nanochannel Transport Studies
- Electrocatalysts for Energy Conversion
- Mechanical and Optical Resonators
- Fuel Cells and Related Materials
- Synthesis and Properties of Aromatic Compounds
- Advanced Chemical Physics Studies
- Porphyrin and Phthalocyanine Chemistry
- Advanced Battery Materials and Technologies
- Advanced Sensor and Energy Harvesting Materials
- Nanotechnology research and applications
- Force Microscopy Techniques and Applications
Peking University
2015-2024
Beijing National Laboratory for Molecular Sciences
2015-2024
State Key Laboratory of Rare Earth Materials Chemistry and Application
2014-2024
Qingdao University
2024
King University
2014-2020
State Key Laboratory for Structural Chemistry of Unstable and Stable Species
2012
Hefei National Center for Physical Sciences at Nanoscale
2011
Chinese Academy of Sciences
2007-2011
University of Science and Technology of China
2011
National Institute of Advanced Industrial Science and Technology
2003-2010
The electrochemical behavior of a film single-wall carbon nanotubes (SWNTs) functionalized with carboxylic acid groups was studied extensively on glassy (GC) electrode. One stable couple corresponding to the redox group, which supported by XPS and IR experiments, observed. electrode process involved four electrons, while rate-determining step one-electron reduction. SWNT film-modified showed favorable electrocatalytic toward oxidation biomolecules such as dopamine, epinephrine, ascorbic acid.
The electrochemistry of horse heart cytochrome c was studied by cyclic voltammetry at a glassy carbon electrode modified with single-wall nanotubes (SWNTs). A pair well-defined redox waves obtained in aqueous solution an activated SWNT film-modified electrode. optimal conditions for activating the has been determined. reaction is diffusion-controlled process. peak current increases linearly concentration range from 3.0 × 10-5−7.0 10-4 M. detection limit 1.0 10-5 film characterized scanning...
Manganese oxide nanoflower/carbon nanotube array (CNTA) composite electrodes with hierarchical porous structure, large surface area, and superior conductivity was controllable prepared by combining electrodeposition technique a vertically aligned CNTA framework. This binder-free manganese oxide/CNTA electrode presents excellent rate capability (50.8% capacity retention at 77 A/g), high capacitance (199 F/g 305 F/cm (3)), long cycle life (3% loss after 20,000 charge/discharge cycles), strong...
Few-layered graphene sheets, synthesized by direct current arc-discharge method using NH3 as one of the buffer gases, were dispersed in chitosan/acetic acid solutions. FTIR and X-ray photoelectron spectroscopy showed presence oxygen-containing functional groups on surface sheets that may assist good dispersion chitosan solution. Graphene/chitosan films produced solution casting method. The mechanical properties composite tested nanoindentation With addition a small amount (0.1−0.3 wt %),...
Thanks to nitrogen introduced into the layered carbon framework of graphite, chemical reactivity atoms was increased. N-doped graphitic catalysts generate reactive oxygen species and display excellent activity for hydrocarbon activation even at room temperature. As a service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, but not copy-edited or typeset. Technical support issues...
Carbon nanotubes are promising for use in biomedical and pharmaceutical sciences. Therefore, it becomes imperative to know the basic biological properties of carbon vivo. We labeled water-soluble hydroxylated single-wall with radioactive 125I atoms, then tracer was used study distribution mice. They moved easily among compartments tissues body, behaving as small active molecules though their apparent mean molecular weight is tremendously large. This study, first time, affords a quantitative...
We provide a wet chemical approach for organizing randomly tangled single-walled carbon nanotubes (SWCNTs) on gold surfaces. The as-grown were first chemically cut into short pipes and thiol-derivatized at the open ends. ordered assembly of SWCNTs was made by their spontaneous adsorption to via Au−S bonds. Tapping mode atomic force microscopy (AFM) images clearly show that have been organized gold, forming self-assembled monolayer structure with perpendicular orientation. kinetics very slow...
Polydopamine is not only a multifunctional biopolymer with promising optoelectronic properties but it also versatile coating platform for different surfaces. The structure and formation of polydopamine an active area research. Some studies have supposed that composed covalently bonded dihydroxyindole, indoledione, dopamine units, others proposed noncovalent self-assembly contributes to as well. However, difficult directly find the details supramolecular via self-assembly. In this study, we...
The voltammetric behavior of norepinephrine (NE) was studied at a glassy carbon (GC) electrode modified with single wall nanotubes (SWNTs). In pH 5.72 B-R buffer solution, the SWNT-modified shows high electrocatalytic activity toward NE oxidation. One well-defined reversible redox couple is obtained scan rates lower than 0.15 V s−1. peak current increases linearly concentration in range 1.0×10−5 - 1.1×10−3 mol dm−3. detection limit 6.0×10−6 dm−3 and diffusion coefficient (D) 8.53×10−6 cm2...
Quasi-one-dimensional nanotubes and two-dimensional nanoribbons are two fundamental forms of nanostructures, integrating them into a novel mixed low-dimensional nanomaterial is fascinating challenging. We have synthesized stable consisting MoS2 inorganic encapsulated in carbon (which we call nanoburritos). This route can be extended to the synthesis nanoburritos composed other ultranarrow transition-metal chalcogenide nanotubes. The widths previously ribbons greater than 50 nm, while uniform...
In this report, we find multilayered graphene, which has good transparency, conductivity and suitable work function, can be used as the anode for organic light emitting device. Our device structure is Al/glass/multilayered graphene/V2O5/NPB/CBP:(ppy)2Ir(acac)/Bphen/Bphen:Cs2CO3/Sm/Au. The maximum luminance efficiency power reach 0.75 cd/A 0.38 lm/W, respectively. We believe that by optimizing hole density uniforming thickness of graphene anode, remarkably increased in future.
An anisotropic high-spin qubit with long coherence time could scale the quantum system up. It has been proposed that Grover's algorithm can be implemented in such systems. Dimetallic aza[80]fullerenes M2@C79N (M = Y or Gd) possess an unpaired electron located between two metal ions, offering opportunity to manipulate spin(s) protected cage for information processing. Herein, we report crystallographic determination of Gd2@C79N first time. This molecular magnet a collective ground state (S...
Nitrogen-doped graphene treated with ammonia under different temperatures was used as the catalysts for epoxidation of trans-stilbene and styrene at 373 K. NG-800 (N-doped 800 °C 8 h) performed best gave highest recyclable catalytic activity trans-stilbene, 95.8% conversion 94.4% selectivity to epoxide. The center has been identified reaction mechanism elucidated by DFT calculation.
We report on a temperature dependence of the frequency all major peaks in Raman spectra carbon nanotubes, using different excitation laser powers at sample. The decreases with increasing for peaks, and shifts frequencies are linear In comparison, similar is found active carbon, but no shift observed highly ordered pyrolytic graphite within same range variation power. A lowering higher implies an increase carbon–carbon distance temperature. relatively strong nanotubes may be due to enhanced...
Atomic chains and crystal of iodine were successfully generated in a controlled manner inside single-walled carbon nanotubes (SWNTs). The structure is strongly dependent on the diameter SWNTs; single, double, triple helical structures became quite stable when SWNTs matches certain size. More than three are not very stable, they often crystallize nanotube larger 1.45 nm. crystallization or phase transition confined nanospace thus directly observed, there indeed critical size hollow for...
Abstract Single‐wall carbon nanotubes (SWNTs) can be used as an electrochemical probe to study the oxidation of DNA, two voltammetric peaks corresponding guanine and adenine residues in DNA could observed, demonstrating a new potential application SWNTs analysis. Compared other types electrode materials, response natural was greatly enhanced at SWNT‐modified electrode. This method investigate interaction with DNA.