carbon black surface chemistry

... to those of silica and carbon black White rice husk silica contains around 95% SiO2, whereas black rice husk silica is approximately 55% silica and 45% carbon Residual carbon cannot be completely ... negligible Surface modification by use of coupling agents can enhance the properties of compounds containing calcium carbonate However, it is most effective when blended with carbon black or silica ... fillers such as silica or carbon black Particle sizes can range from 0.5 to 10.0 Am Clays such as kaolin and bentonite can also be used in combination with silica or carbon black Particle sizes tend...

Ngày tải lên: 27/06/2014, 06:20

... binding by functionalized multiwalled carbon nanotubes is governed by the surface chemistry of both parties and the nanotube diameter Journal of Physical Chemistry C 2008, 112:3300-3307 23 Lynch ... carbon black [11] Such an effect may become more relevant when Table Characterization of MWCNTs P-MWCNT Length [nm] MWCNT-NH2 MWCNT-COOH 500 to >2000 External diameter [nm] 20 - 30 Specific surface ... functionalization This would implicate that the surface properties of a functionalized MWCNT are not changed to the same extent by precoating as the surface properties of a P-MWCNT After identifying...

Ngày tải lên: 11/08/2014, 00:22

... 0.3 0.2 0.6 0.5 0.4 0.3 % carbon black loading % carbon black loading % carbon black loading 0.1 (b) 0.7 % carbon black loading 0.2 % carbon black loading % carbon black loading 0.1 0.0 0.0 10 ... % carbon black loading 0.2 10 20 30 40 50 Square root of time, (h0.5 ) 60 0.6 % carbon black loading % carbon black loading % carbon black loading 0.2 0.0 0.8 0.4 % carbon black loading % carbon ... 0.6 % carbon black loading 0.6 Weight change, % Weight change, % 0.7 % carbon black loading % carbon black loading 0.5 0.4 0.3 (b) 0.5 0.4 0.3 0.2 % carbon black loading 0.2 (a) 0.1 % carbon black...

Ngày tải lên: 14/03/2014, 13:20

... and Surface Chemistry Applied Colloid and Surface Chemistry Richard M Pashley and Marilyn E Karaman © 2004 John Wiley & Sons, Ltd ISBN 470 86882 (HB) 470 86883 X (PB) Applied Colloid and Surface ... description of surface tension and surface energy It is easy to demonstrate that the surface energy of a liquid actually gives rise to a surface tension’ or force acting to oppose any increase in surface ... process, is determined entirely by the surface properties or surface chemistry of the mineral particle, and this can be controlled by the use of low levels of surface- active’ materials, which will...

Ngày tải lên: 16/03/2014, 11:44

... Moreover these conventional surface treat‐ ment methods utilize a reaction between a liquid and a solid since an oxidizing agent con‐ tacts with the entire surface of CNT and the surface is uniformly ... carry a net negative surface charge [Jucker et al., 1996], adhesion of bacteria is discouraged on negatively charged surfaces, while it is pro‐ moted on positively charged surfaces [Hogt et al., ... biological systems 2.2 Molecular wire of urea and induced drying in carbon nanotubes 2.2.1 Molecular wire of urea inside narrow carbon nanotube Molecules confined inside nanoscale space such as...

Ngày tải lên: 16/03/2014, 12:20

... between molecules and/or surfaces of interest [1–4] They also offer a unique, novel surface characterization method that “monitors surface properties changing from the surface to the bulk (depth ... the surface forces apparatus and (b) the colloidal probe atomic force microscope III ALCOHOL CLUSTER FORMATION ON SILICA SURFACES IN CYCLOHEXANE Surface forces measurement is a unique tool for surface ... molecular scale At such small scales, about half of the atoms are in the surface layer, the surface energy dominates, and the surface layer can be considered a new material with properties different...

Ngày tải lên: 04/06/2014, 14:48

... for the carcinogenicity of carbon black and carbon black extracts [4] However, Valberg and co-workers [55] summarized their overview on the carcinogenicity of carbon black as follows: “new epidemiological ... exposure among the carbon black workers changed only slightly when Page of 14 Figure Trace plots of logit of proportion of current or former smokers among exposed to carbon black (= xsm_exp) and ... the carbon black cohort: 74% (CAREX) versus 16% (expert) However, both very different approaches led to the same conclusion: the previous exposure to carcinogens received outside the carbon black...

Ngày tải lên: 20/06/2014, 00:20

... of carbon black nanofluids Optical properties of carbon black powder and nanofluids Rheological behaviors of carbon black nanofluids Figure shows the UV-Vis-NIR absorption spectra of carbon black ... carbon black powder was obtained by repeating the process twice Then the pretreated carbon black powder was ground and dispersed into distilled water under ultrasonic vibration for h Carbon black ... to 2,500 nm The carbon black powder was put on a sample stage, and the absorption spectra were detected The carbon black nanofluids of Preparation of nanofluids Commercial carbon black powder (N115)...

Ngày tải lên: 21/06/2014, 02:20

... grown carbon nanofibre/poly(vinylidene fluoride) composites’ Carbon 2009, 47:2590 Gonçalves AG, Figueiredo JL, Órfão JJM, Pereira MFR: ’Influence of the surface chemistry of multi-walled carbon ... active sites on carbon catalysts’ Ind Eng Chem Res 2007, 46:4110 Figueiredo JL, Pereira MFR, Freitas MMA, Órfão JJM: ’Modification of the surface chemistry of activated carbons’ Carbon 1999, 37:1379 ... their activity as ozonation catalysts’ Carbon 2010, 48:4369 Rivera-Utrilla J, Bautista-Toledo I, Ferro-García MA, Moreno-Castilla C: ’Activated carbon surface modifications by adsorption of bacteria...

Ngày tải lên: 21/06/2014, 04:20

... carbon black was pressed to a carbon rod and put into an arc-discharge plasma instrument After treating for about h, a black powder with loose structures was obtained The as-prepared carbon black ... 4:153–156 Fig SEM image and EDX pattern of carbon black after arcdischarge plasma treatment Results and Discussion Figure shows the typical SEM image of the carbon black, which was treated in an arc-discharge ... high-frequency induction heating procedure A ball-milled mixture of SiO and carbon black was used as source materials The carbon black were pretreated in an arc-discharge plasma instrument in order...

Ngày tải lên: 22/06/2014, 01:20

... between molecules and/or surfaces of interest [1–4] They also offer a unique, novel surface characterization method that “monitors surface properties changing from the surface to the bulk (depth ... the surface forces apparatus and (b) the colloidal probe atomic force microscope III ALCOHOL CLUSTER FORMATION ON SILICA SURFACES IN CYCLOHEXANE Surface forces measurement is a unique tool for surface ... molecular scale At such small scales, about half of the atoms are in the surface layer, the surface energy dominates, and the surface layer can be considered a new material with properties different...

Ngày tải lên: 29/06/2014, 09:21

... Introduction 1.1 Surface Chemistry and Heterogeneous Catalysis 1.2 Surface Chemistry and Chemical Vapor Deposition 1.3 Surface Chemistry and Chemical Vapor Etching 1.4 Surface Chemistry Studies ... motivation for many surface science studies of molecular adsorption on transition metal surfaces is to understand the reactive surface chemistry Establishing the identity of surface species that ... on Ni(111) 1.5 Surface Chemistry of Oxygenates and the Effects of Surface Atomic Oxygen 1.6 Objectives of the Present Work References 11 Chapter Experimental 15 2.1 Principles of Surface Analysis...

Ngày tải lên: 17/09/2015, 17:19

... Medicinal Chemistry and Pharmacological Potential of Fullerenes and Carbon Nanotubes CARBON MATERIALS: CHEMISTRY AND PHYSICS A comprehensive book series which encompasses the complete coverage of carbon ... entitled Carbon Materials: Chemistry and Physics”, the purpose of which is to analyze the new frontiers of carbon This volume summarizes the more recent advances on fullerenes and carbon nanotubes ... coverage of carbon materials and carbon- rich molecules from elemental carbon dust in the interstellar medium to the most specialized industrial applications of elemental carbon and its derivatives...

Ngày tải lên: 17/02/2014, 05:20

... using a vector scan method Firstly, the sample surface approached the commercial DLC tip in the Zdirection until the tip contacting with the sample surface under a preset load Then, the feedback ... to avoid additional damage to the sample surface Results and discussion Two scratch directions, forward and backward, were selected to scratch the Si surface As illustrated in Figure 1a, forward ... precisely and uniformly on a Si surface, indicating that AFM-based scratch lithography with a DLC-coated tip could be used to fabricate complex nanostructures on a hard silicon surface Conclusion In the...

Ngày tải lên: 21/06/2014, 00:20

... and insulator nanoparticles at the surface of covalently modified multiwalled carbon nanotubes Chem Mater 2004, 16:3780 16 Kolb HC, Finn MG, Sharpless KB: Click chemistry: diverse chemical function ... -hybridized carbons of the nanotubes, whereas the G band corresponds to a splitting of the E g stretching mode of graphite, which reflects the structural intensity of the sp2-hybridized carbon atoms ... nanohybrids Abbreviations CNT: carbon nanotube; DMF: dimethylformamide; EDX: energy dispersive X-ray spectrum; FT-IR: Fourier transform infrared; MWNTs: multi-walled carbon nanotubes; POSS: polyhedral...

Ngày tải lên: 21/06/2014, 05:20

... total number of carbon atoms detected 123 238 surface could thus be raised from 40 to 54% as shown in Table The thick amorphous carbon can prevent defects from further forming on the surface during ... whilst the concentration of amorphous carbon is minimized Note that the amount of surface defects is important for functional groups to form on the nanotube surface [10] In order to evaluate the ... reactive chemical species which form covalent bonds with the amorphous carbon and then nanotube surface More specifically, the amorphous carbon layer is more reactive than the cylindrical walls to form...

Ngày tải lên: 22/06/2014, 01:20

... black carbon removal Little ultrafine PM removal Does not remove lube oil ash Old technlogy Little black carbon removal Little ultrafine PM removal Does not remove lube oil ash Little black carbon ... cost-benefit ratio for individual measures Integrated Assessment of Black Carbon and Tropospheric Ozone Introduction Black carbon (BC, Box 1) and tropospheric ozone (O3, Box 2) are harmful air ... Sustainable Future, LAquila, Italy, 2009) Summary for Decision Makers Box 1: What is black carbon? Black carbon (BC) exists as particles in the atmosphere and is a major component of soot BC...

Ngày tải lên: 28/06/2014, 19:20

... sequence-dependent rates Chemistry of Carbon Nanotubes of translocation, a prerequisite for nanoscale separation devices 5.3 Encapsulation of Liquids A particular area of interest is the use of carbon tubes ... Fernando, S K A.; Lin, Y.; Kennedy, J M.; Sun, Y.-P Carbon 2004, 42, 2849 Fernando, K A S.; Lin, Y.; Sun, Y.-P Langmuir 2004, 20, 4777 Chemistry of Carbon Nanotubes (207) (a) Velasco-Santos, C.; ... Prato, M Carbon 2005, 43, 1984 (75) (a) Alvaro, M.; Atienzar, P.; de la Cruz, P.; Delgado, J L.; Garcia, H.; Langa, F J Phys Chem B 2004, 108, 12691 (b) Wang, Y.; Iqbal, Z.; Mitra, S Carbon 2005,...

Ngày tải lên: 06/08/2014, 13:22

... buffeli−D11047 (Warwick); T orientalis −AB008369 (Essex); B equi−L13784; Jeju black cattle (JBC)-1, 2−Theileria isolate from Jeju black cattle Results The hematological values of all the samples were ... (Fukushima); T buffeli−D11047 (Warwick); T orientalis−AB008369 (Essex); Jeju black cattle (JBC)-1, - Theileria isolate from Jeju black cattle 158 Myung-Soon Ko et al the B-type pattern shown in Fig ... orientalis−AB008369 (Essex); B equi−L13784; JBC-1, - Theileria isolate from Jeju black cattle Antigenic diversity of Theileria in Jeju black cattle in Asia [5,12,21] In Taiwan and other parts of East Asia,...

Ngày tải lên: 07/08/2014, 20:23