Vol. 4 No. 1: (Published)

  • Open Access

    Articles

    Article ID: 185

    Nonlinear resistivity and Charge transport characteristics of Sir/sic composites

    by zhuoran Yang

    Composite Materials Research, Vol.4, No.1, 2024; 121 Views, 6 PDF Downloads

    DOI: https://doi.org/10.1828/cmr.v4i1.185

    In order to the effect of nonlinear resistivity on space charge and surface charge properties of Sir/si C Composites, the nonlinear resistivity, space charge and surface charge potential of sir/sic composites with different Si C particle content under different voltage were measured. The change of nonlinear resistivity under different voltage and the influences of nonlinear resistivity on charge tion and dissipation were analyzed. The results indicate that resistivity of Sir/sic composites does not present obvious nonlinearity when the SiC content is lower than 10. The resistivity experiences a nonlinear change with the increasing electric field when the SiC content exceeds% and th e threshold field of nonlinear resistivity declines when the SiC content rises. In the spaces charge polarization process, low resistivity suppresses the accumulation of spaces charge in Sir/sic s while in depolarization process, low resistivity accelerates the dissipation of space charge. The acceleration effect is also found in surface charge dissipation of Sir/sic. Generally, this paper looked into the change of nonlinear resistivity and charge property of Sir/sic Composites, providing Referencesfor the application of nonlinear resistivity materials in DC cable accessories.

  • Open Access

    Articles

    Article ID: 181

    lignocellulose/Nano-montmorillonite composite for waste water Cu(II)adsorption and desorption

    by Zhangxiao tao

    Composite Materials Research, Vol.4, No.1, 2024; 183 Views, 5 PDF Downloads

    DOI: https://doi.org/10.1828/cmr.v4i1.181

    usinglignocellulose(LNC)with nano-montmorillonite(nano-mmt)intercalation Composite preparedlnc/nano-mmtComposite asadsorbent, simulatecopper-containing wastewaterCu((I)sorption and desorption experiment.through static adsorption experiments,studywithCu((I)Initial strong of solutiondegree,pHvalue,adsorption temperature and adsorption time to solutionCu((I)effects of adsorption effects.results show:Best adsorption condition isCu((I)Solutioninitial concentration0 03mol•L 1 ,phvalue4.9,Adsorption temperature°C,adsorption time60min,adsorption capacity reached maximum322. MG•g 1 no., (,)The quasi two-level kinetic model can well describe its adsorption process,adsorption isotherm compliantLangmuirmodel.useHNO3tolnc/NANCR MMTcomposites for desorption regeneration Experiment.Theresult shows that:with0 1mol.L -1 forHNO3as adesorption,desorption temperature40C,Ultrasounddesorption time30min maximumdesorption283. MG•g -1 .combinationXRD,SEMandFTIRanalysisLNC/NANO-MMTComposite Materialadsorption mechanism for material.adsorption/desorption Cycling Experimental study shows:lnc/nano-mmtComposite Reuse4Theadsorption is still higher at times,is aExcellent recyclable and efficient adsorbent.

  • Open Access

    Articles

    Article ID: 197

    Progress on photocatalytic degradation of organic pollutants by

    by fang Liu

    Composite Materials Research, Vol.4, No.1, 2024; 198 Views, 3 PDF Downloads

    DOI: https://doi.org/10.1828/cmr.v4i1.197

    Graphene ? a New kind of carbon nano-materials with a large specific surface area Then Excellent electrical conductivity. When I is incorporated into TiO2Semiconductor to form a composite materials , TiO2 Photocatalytic performance could do greatly enhanced and , composite has extensive application prospect in the field of photocatalysis . Graphene in titanium dioxide/graphene Nanocomposites can Promote effectively Separation of electron and hole, , and enhance The absorption efficiency inTiO2 surface for Organic pollutions In certain Extent . In This Review , Preparation methods of graphene /tio2 composite Nanomaterials and their application in Photocatalyticdegradation of organic pollutants are reviewed. and , mechanism to Photocatalytic enhancement by Graphene/tio2 Composites is also analyzed. Finally , The future prospecton the trends of Graphene/tio2 composite photocatalyst is also given .

  • Open Access

    Articles

    Article ID: 198

    Progress on Preparation and supercapacitance

    by zhao-xia Hou

    Composite Materials Research, Vol.4, No.1, 2024; 169 Views, 3 PDF Downloads

    DOI: https://doi.org/10.1828/cmr.v4i1.198

    In Recent years, and graphene / polyaniline composites with excellent electrochemical performance have aroused Extensive concern of domestic andforeign scholars . Graphene is of Large specific surface Area and double layer capacitance characteristics , polyaniline are with High faradaic Pseudocapacitance, Synergy to both makes this supercapacitance Performance to the Composites increase greatly . The preparation methods of the graphene/polyaniline compositesand The Influence Factors to the capacitance Performance were introduced , The constructing methods of Three-dimentional structure of graphene/polyanilineComposites were Summarized, The future trends of the composites In supercapacitor fields were prospected as Down .