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Progress in Natural Science:Materials International 2016年第4期26卷 354-361页

作者： William Wilson Anku Samuel Osei-Bonsu Oppong Sudheesh Kumar Shukla Eric Selorm Agorku Poomani Penny Govender Department of Applied Chemistry University of Johannesburg

This paper reports the degradation of indigo carmine and eosin Y dyes in water, catalyzed by cobalt and multiwalled carbon nanotube modified zirconium oxide nanocomposite（Co-ZrO2-MWCNTs） under simulated visible light. The bare ZrO2,ZrO2-MWCNTs, Co-ZrO2and Co-ZrO2-MWCNTs with different percentage compositions of cobalt were synthesized by homogeneous co-precipitation method. Characterization of the prepared nanocomposites was carried out using X-Ray powder Diffraction（XRD）, Fourier Transformer Infrared（FTIR） Spectroscopy, Transmission Electron Microscopy（TEM）, Raman Spectroscopy,（UV–Vis）-Spectroscopy and Energy Dispersive Spectroscopy（EDS） for their structure, formation,morphology, size and elemental analysis. The experimental results indicated that all the cobalt and MWCNTs modified nanocomposites demonstrated higher photocatalytic activities compared to the bare ZrO2. The most efficient catalyst（0.5% Co-ZrO2-MWCNTs） with the band gap and Ka values of 5.21 e V and 16.86*10-3min-1respectively exhibited 98% degradation efficiency toward indigo carmine and 87% toward eosin Y in 180 min.

关键词： multiwalled carbon nanotube Cobalt ZrO2 Nanocomposite Photodegradation

Stripping voltammetric determination of Cd(Ⅱ)based on multiwalled carbon nanotube functionalized with 1-(2-pyridylazo)-2-naphthol

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Chinese Chemical Letters 2011年第12期22卷 1469-1472页

作者： Alireza Mohadesi Hadi Beitollahi Mohammad Ali Karimi Department of Chemistry Payame Noor UniversityTehran 19395-4697Iran Department of Chemistry Payame Noor University(PNU)P.O.Box 76175-559KermanIran Environmental Department Research Institute of Environmental SciencesInternational Center for SciencesHigh Technology and Environmental SciencesKermanIran Department of Chemistry & Nanoscience and Nanotechnology Research Laboratory(NNRL) Payame Noor University(PNU)SirjanIran

The present work has focused on the modification of multiwalled carbon nanotube with a ligand,l-（2-pyridylazo）-2-naphthol, and its potential application for the development of a new,simple and selective modified glassy carbon electrode for stripping voltammetric determination of Cd（Ⅱ）.The analytical curve for Cd（Ⅱ） ions covered the linear range varying from 0.8 up to 220.4μgL^（-1）.The limit of detection was found to be 0.1μgL^（-1）,while the relative standard deviation（RSD） at 50.0μgL^（-1） was 1.8%（n=5）.This modified electrode was successfully applied for determination of Cd（Ⅱ） in some water samples.

关键词： multiwalled carbon nanotube 1-(2-Pyridylazo)-2-naphthol Cadmium(Ⅱ) Stripping voltammetry

multiwalled carbon nanotubes Modified with Silylated-salicylaldimine Co(II) and Pd(II) Complexes as Precatalysts in Ethylene Oligomerization

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Chemical Research in Chinese Universities 2022年第2期38卷 552-561页

作者： XUE Jingqi LI Feng ZHAI Xue LI Dan GUO Lijun LI Cuiqin Provincial Key Laboratory of Oil&Gas Chemical Technology College of Chemistry&Chemical EngineeringNortheast Petroleum UniversityDaqing 163318P.R.China

MWCNTs-Co(II) and Pd(II) were prepared through grafting silylated-salicylaldimine Pd(II) and Co(II) on multiwalled carbon nanotubes(MWCNTs) for ethylene oligomerization. The structures of the two MWCNTs-supported catalysts were characterized by means of scanning electron microscopy(SEM), X-ray diffraction(XRD), Fourier transform infrared(FTIR) spectroscopy, thermogravimetric analyses(TGA) and nitrogen adsorption and desorption. And the influence of the supported pattern on the catalytic properties for ethylene oligomerization was investigated. The results revealed that the silylated-salicylaldimine complexes were grafted on the inner and outer surfaces of the carbon nanotubes and the pore size and BET surface area of MWCNTs decreased. Compared with the homogeneous catalysts, the two MWCNTs-supported catalysts had higher selectivity for hexene and 1-hexene in the presence of diethylaluminum chloride(DEAC) with a small molecule size due to confinement effect. MWCNTs-Pd exhi-bited higher activity and higher selectivity for C8+ olefin compared to MWCNTs-Co due to electronic factors. The catalytic activities of MWCNTs-Pd and MWCNTs-Co decreased from 24.18×105g·(mol Pd·h)–1 and 20.57×105g·(mol Co·h)–1 to 19.79×105g·(mol Pd·h)–1 and 13.14×105g·(mol Co·h)–1 after the third recycle reaction, respectively.

关键词： Ethylene oligomerization multiwalled carbon nanotube Confinement effect Heterogeneous catalyst

Facile and Controllable Assembly of multiwalled carbon nanotubes on Polystyrene Microspheres

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Chinese Journal of Polymer Science 2014年第6期32卷 711-717页

作者：李云兴 Yan Gao Cheng Yang Zhao-qun Wang Gi Xue The Key Laboratory of Food Colloids and Biotechnology Ministry of Education School of Chemical and Material Engineering Jiangnan University Department of Polymer Science and Engineering School of Chemistry and Chemical Engineering Nanjing University

Herein a facile and controllable heterocoagulation between polystyrene （PS） microspheres and multiwalled carbon nanotubes （MWCNTs） is introduced based on colloid thermodynamics. The MWCNTs play the role of steric stabilizer for stabilizing the metastable PS microspheres and thus immobilize spontaneously on the surface of PS microspheres. The synthesized MWCNTs-coated PS composite particles have been extensively characterized by scanning electron microscopy, transmission electron microscopy, thermogravimetry and Raman spectroscopy. The results indicate that the structure and morphology of the resultant MWCNTs-coated PS composite particles are significantly affected by the weight ratio of PS and MWNCTs and the amount of poly（vinylpyrrolidone） that is injected into PS dispersion before they are mixed with MWCNTs. Therefore, these composite particles have the potential to produce MWCNTs-based composite materials with controllable mass loading and dispersity of MWCNTs.

关键词： multiwalled carbon nanotube Polystyrene microsphere Heterocoagulation Structural control Colloidthermodynamics.

Covalent Functionalization of multiwalled carbon nanotubes with Poly（acrylic acid）

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Chinese Journal of Chemistry 2006年第4期24卷 563-568页

作者：刘演新杜中杰李艳张晨励杭泉 The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials Beijing University of Chemical Technology Beijing 100029 China

Covalent functionalization of multiwalled carbon nanotubes （MWNT） with poly（acrylic acid） has been successfully achieved via grafting of poly（acryloyl chloride） on nanotube surface by esterification reaction of acyl chloride-bound polymer with hydroxyl functional groups present on acid-oxidized MWNT and hydrolysis of polymer attached to nanotubes. Polymer-functionalized MWNT could possess remarkably high solubility in water, and their aqueous solution was very stable without any observable black deposit for a long time. Characterizations of such functionalized MWNT samples using Fourier transform infrared spectrometer, transmission electron microscopy and nuclear magnetic resonance techniques indicated that poly（acrylic acid） was covalently attached to the surface of MWNT.

关键词： multiwalled carbon nanotube oxidation functionalization poly(acrylic acid)

Electrochemical Determination of Reduced Glutathione at multiwalled carbon nanotubes/Poly(bromocresol green) Modified Glassy carbon Electrode

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Chemical Research in Chinese Universities 2011年第6期27卷 934-938页

作者： HOU Ju-ying AI Shi-yun College of Chemistry and Material Science Shandong Agricultural University Tai ＇an 271018 P. R. China

A multiwalled carbon nanotubes/poly(bromocresol green) modfied glassy carbon electrode (MWNTs-PBG/GCE) was used to investigate the electrochemical behavior of reduced glutathione(GSH). GSH showed an irreversible oxidation process on MWNTs-PBG/GCE with an oxidation peak at 0.77 V(vs. SCE) in a phosphate buffer solution(pH=4.0). The kinetic parameters of the electrochemical behavior of GSH on MWNTs-PBG/GCE were calculated. Under the optimal conditions and with the help of amperometric method, a linear relationship was obtained between the oxidation peak current and GSH concentration in the range from 2×10-7 mol/L to 5×10-6 mol/L with the detection limit as 1×10-8 mol/L(signal-to-noise ratio of 3). The current reached the steady-state current within about 5 s. The modified electrode surface had very good reproducibility and stability.

关键词： Poly(bromocresol green) Glutathione Electrode multiwalled carbon nanotube

Development of a reversed dispersive based graphene functionalized with multiwalled carbon nanotubes for detection ofβ2-agonists in pork by high-performance liquid chromatography

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Food Science and Human Wellness 2018年第2期7卷 163-169页

作者： Ying-Wen Qian Xia Hong Cai-Xia Yuan Xin-Kui Zhou Hai-Ning He Dong-Shuai Wang Quality and Safety Technological Innovation Service Platform on Circulation of Animal Origin Gansu Institute of Business and TechnologyLanzhouGansu 730010China Key Laboratory of Animal Products Safety Analysis and Detection Technology of Gansu Province LanzhouGansu 730010China

A reliable and inexpensive pretreatment procedure in the determination ofβ2-agonists in pork was *** procedure used a nanocomposite of multiwalled carbon nanotubes(CNTs)functionalized with graphene(rGO)as the reversed dispersive *** was analyzed after purification by highperformance liquid chromatography,the extraction time and the properties of the nanocomposite were *** optimized conditions,present method has linear response over concentration range of 0.5–50 ng/mL in pork samples with a satisfactory detection limit close to 0.1 ng/*** precisions of the current method(coefficient of variation)are lower than 5%,while recoveries are more than 98.3%.The nanocomposite exhibited high adsorptivity,long-term storage stability,satisfactory anti-interfering activity and high selectivity toward2-agonists compared with those of rGO and CNTs.

关键词： High-performance liquid chromatography Graphene multiwalled carbon nanotube Ractopamine Salbutamol

Vapor-grown carbon fibers enhanced sulfur-multi walled carbon nanotubes composite cathode for lithium/sulfur batteries

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Transactions of Nonferrous Metals Society of China 2014年第1期24卷 158-163页

作者：邓兆丰张治安卢海赖延清刘晋李劼刘业翔中南大学冶金与环境学院长沙410083 中南大学深圳研究院深圳高性能电池材料与器件工程研究中心深圳518057

Vapor-grown carbon fibers （VGCFs） were introduced as conductive additives for sulfur-multiwalled carbon nanotubes （S-MWCNTs） composite cathode of lithium-sulfur batteries. The performance of S-MWCNTs composite cathodes with carbon black and VGCFs as sole conductive additives was investigated using scanning electron microscopy （SEM）, galvanostatic charge-discharge tests and electrochemical impedance spectroscopy （EIS）. The results show that the S-MWCNTs composite cathode with VGCFs displays a network-like morphology and exhibits higher activity and better cycle durability compared with the composite cathode with carbon black, delivering an initial discharge capacity of 1254 mA＆#183;h/g and a capacity of 716 mA＆#183;h/g after 40 cycles at 335 mA/g. The interconnected VGCFs can provide a stable conductive network, suppress the aggregation of cathode materials and residual lithium sulfide and maintain the porosity of cathode, and therefore the electrochemical performance of S-MWCNTs composite cathode is enhanced.

关键词： lithium-sulfur batteries carbon fiber composite cathode multiwalled carbon nanotube

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聚苯乙烯/多壁碳纳米管复合丝的制备及性能

聚苯乙烯/多壁碳纳米管复合丝的制备及性能

纳米管对β-成核PP的结晶行为与熔融特性的影响

2012年全国高分子材料科学与工程研讨会

作者：杨波周秀文刘旭东中国工程物理研究院激光聚变研究中心

＜正＞碳纳米管与聚合物共混纺制的导电纤维不仅具有导电或抗静电性,而且由于纺丝过程中聚合物流体会使碳纳米管沿纤维轴向取向,从而起到微纤增强的作用,可大大提高复合纤维的强度和模量。碳纳米管具有优异的导电性,并且与有机物的相容... 详细信息

＜正＞碳纳米管与聚合物共混纺制的导电纤维不仅具有导电或抗静电性,而且由于纺丝过程中聚合物流体会使碳纳米管沿纤维轴向取向,从而起到微纤增强的作用,可大大提高复合纤维的强度和模量。碳纳米管具有优异的导电性,并且与有机物的相容性优于金属,故材料的

关键词： Polystyrene multiwalled carbon nanotube composite fiber electric conductivity mechanical property

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纳米管对β-成核PP的结晶行为与熔融特性的影响