Zhennan Gu
Peking University
Analytical chemistryTransmission electron microscopyFullereneNanotechnologyElectrodeInorganic chemistryAqueous solutionChemistryMaterials scienceAcetonitrileNanotubeCyclic voltammetryNafionGraphiteMetallofullereneElectrocatalystRaman spectroscopyChemical engineeringCarbonCarbon nanotubeElectrochemistryOptical properties of carbon nanotubes
Publications 148
#1Huiming Cheng (PKU: Peking University)H-Index: 4
#1Hui-Ming Cheng (PKU: Peking University)H-Index: 159
Last. Meixian Li (PKU: Peking University)H-Index: 31
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A glassy carbon electrode (GCE) was modified with nanopeapods formed by ferrocene filled single-walled carbon nanotubes (Fc@SWNTs). The modified electrode showed bi-directional electrocatalysis toward dopamine (DA), which suggested a synergistic effect of ferrocene and carbon nanotubes. Bi-directional detection of DA was realized based on the modified electrode.
8 CitationsSource
#1Hanxun Qiu (PKU: Peking University)H-Index: 16
#1Hanxun QiuH-Index: 2
Last. Junhe YangH-Index: 1
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Electrochemical Behaviors of Double-Walled Carbon Nanotubes Encapsulating Ferrocene Hanxun Qiu1 3 4, Nijuan Sun2, Meixian Li2, Zujin Shi1 ∗, Jieshan Qiu4, and Zhennan Gu1 1Beijing National Laboratory for Molecular Sciences, Laboratory of Rare Earth Materials Chemistry and Applications and 2Institute of Analytic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China 3Laboratory of Advanced Carbon Materials Research, School of Materials Science an...
4 CitationsSource
#1Keke Zhao (RUC: Renmin University of China)H-Index: 6
#2Zhiyong WangH-Index: 24
Last. Zhaoxia JinjH-Index: 1
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Carbon nanotubes filled with metals and semiconductors have been regarded as one of the most promising materials for nanodevices. Here, we demonstrate a simple and effective method to produce tungsten trioxide (WO3) and tungsten (W) nanowires with diameters of below 4 nm inside double-walled carbon nanotubes (DWCNTs). First, the precursors, i.e., phosphotungstic acid (HPW, H3PW12O40) molecules, are successfully introduced into DWCNTs. Subsequent decomposition and reduction lead to the formation ...
1 CitationsSource
#1Zhiyong Wang (PKU: Peking University)H-Index: 24
#2Keke Zhao (PKU: Peking University)H-Index: 6
Last. Sumio Iijima (AIST: National Institute of Advanced Industrial Science and Technology)H-Index: 6
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Layered tungsten disulfide nanostructures are of both fundamental and technological interest. The widths of currently synthesized WS2 ribbons are in the microscale. By using single-walled carbon nanotubes and double-walled carbon nanotubes as templates, we fabricate WS2 nanoribbons with smooth zigzag edges and uniform widths down to 1–3 nm and layer numbers down to 1–3, dependent on the nanotube diameter. Although bulk WS2 is a nonmagnetic semiconductor, the ultra-narrow free-standing zigzag-edg...
51 CitationsSource
#1Nan LiH-Index: 10
#1Nan Li (NU: Northeastern University)H-Index: 7
Last. Zhennan GuH-Index: 44
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: Graphene-CuO nanocomposite was synthesized by a simple wet chemical approach. Using Cu(CH3COO)2 as the starting material, CuO was synthesized and loaded on the graphene sheets through the reaction with NH3H2O in alkaline system. Transmission electron microscopy, powder X-ray diffraction, X-ray photoelectron spectroscopy and Thermogravimetric analysis were employed to characterize the as-prepared sample. The detailed investigations revealed that the nanoparticles, which loaded on the graphene s...
9 CitationsSource
#1Nan Li (NU: Northeastern University)H-Index: 10
#1Nan Li (NU: Northeastern University)H-Index: 7
Last. Zhennan GuH-Index: 44
view all 6 authors...
: The graphene-supported Pd catalyst was synthesized using the graphene-Pd salt as precursor. Transmission electron microscope and powder X-ray diffraction analysis indicated the Pd nanoparticles, which supported on the surface of the graphene sheets possessed a face-centered cubic structure and were with the size of 4-8 nm. The Suzuki-Miyaura reaction was employed to analyze the catalytic activity of the graphene-supported Pd catalyst. HPLC analysis indicated that the yield of biphenyl was 97% ...
50 CitationsSource
#1Zhiyong Wang (PKU: Peking University)H-Index: 24
#2Hao ZhangH-Index: 20
Last. Gaoping CaoH-Index: 21
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High-rate anode materials for lithium-ion batteries are desirable for applications that require high power density. We demonstrate the advantageous rate capability of few-layered graphene nanosheets, with widths of 100–200 nm, over micro-scale graphene nanosheets. Possible reasons for the better performance of the former include their smaller size and better conductivity than the latter. Combination of SnO2 nanoparticles with graphene was used to further improve the gravimetric capacities of the...
120 CitationsSource
#1Zhiyong Wang (PKU: Peking University)H-Index: 24
#2Hong LiH-Index: 75
Last. Sumio IijimaH-Index: 6
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Quasi-one-dimensional nanotubes and two-dimensional nanoribbons are two fundamental forms of nanostructures, and integrating them into a novel mixed low-dimensional nanomaterial is fascinating and challenging. We have synthesized a stable mixed low-dimensional nanomaterial consisting of MoS2 inorganic nanoribbons encapsulated in carbon nanotubes (which we call nanoburritos). This route can be extended to the synthesis of nanoburritos composed of other ultranarrow transition-metal chalcogenide na...
202 CitationsSource
#1Zhiyong Wang (PKU: Peking University)H-Index: 24
#2Zujin Shi (PKU: Peking University)H-Index: 39
Last. Zhennan Gu (PKU: Peking University)H-Index: 44
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Owing to the hollow structure of carbon nanotubes, they could be filled with various kinds of molecules, providing opportunities for studying the properties of molecules confined in nanospace. On the one hand, the spatial confinement imparts novel and distinct properties to the encapsulated species from their counterparts in bulk. On the other hand, the properties of the carbon nanotubes are modified as a result of the interaction between the carbon nanotubes and the encapsulated molecules. In t...
8 CitationsSource
#1Zhiyong Wang (PKU: Peking University)H-Index: 24
#2Nan LiH-Index: 7
Last. Zhennan GuH-Index: 44
view all 4 authors...
Large scale production of graphene nanosheets was achieved by arc evaporation of a graphite rod in air. The graphene nanosheets are ~ 100?200?nm wide and the number of layers is mainly in the range of 2?10. Several tens of grams of product were obtained per day. The yield of graphene nanosheets was found to be dependent on the pressure of the air, i.e.?high pressure facilitates the formation of graphene nanosheets, but low pressure favors the growth of other carbon nanostructures including carbo...
112 CitationsSource