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You searched for: Publication Year 2017 Remove constraint Publication Year: 2017 Subject carbon nanotubes Remove constraint Subject: carbon nanotubes
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1. 1 part per trillion level detection of disinfection byproducts in drinking water using miniaturized sensor

Author:
Zhuo Li; Mingbo Yu; Yingli Chu; Xiaohan Wu; Jia Huang; Wenquan Tao
Source:
Journal of materials chemistry A 2017 v.5 no.10 pp. 4842-4849
ISSN:
2050-7496
Subject:
byproducts; carbon nanotubes; chemical bonding; chemical species; dibromoacetic acid; disinfection; drinking water; electronic sensing; human health; moieties; monitoring; water quality
Abstract:
... Disinfection byproducts (DBPs) in drinking water, resulting from water disinfecting processes, are harmful to human health even at very low concentrations. It has been challenging to simultaneously realize low-cost, portable, rapid and highly sensitive DBPs detection. Here, we report miniaturized electronic sensors for detecting trace amounts of analytes in water, which are fabricated with covalen ...
DOI:
10.1039/c6ta09904a

2. 1,3,5-Triazine-2,4,6-tribenzaldehyde derivative as a new crosslinking agent for synthesis of pH-thermo dual responsive chitosan hydrogels and their nanocomposites: Swelling properties and drug release behavior

Author:
Ali Reza Karimi; Mahsa Tarighatjoo; Golara Nikravesh
Source:
International journal of biological macromolecules 2017 pp. -
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; aldehydes; carbon nanotubes; chitosan; cross-linking reagents; crosslinking; drugs; hydrogels; metronidazole; models; nanocomposites; nuclear magnetic resonance spectroscopy; pH; scanning electron microscopy; temperature
Abstract:
... In this work, 1,3,5-triazine-2,4,6-tribenzaldehyde was synthesized and chosen as the cross-linking agent for preparation of novel thermo- and pH-responsive hydrogels based on chitosan. The cross-linking proceeds through formation of imine bond by reaction of amino groups of chitosan with aldehyde groups of the cross-linker. The various amounts (6, 10, 14% w/w) of the cross-linker were used with re ...
DOI:
10.1016/j.ijbiomac.2017.07.128

3. 100% internal quantum efficiency in polychiral single-walled carbon nanotube bulk heterojunction/silicon solar cells

Author:
Francesco De Nicola; Matteo Salvato; Carla Cirillo; Michele Crivellari; Maurizio Boscardin; Maurizio Passacantando; Michele Nardone; Fabio De Matteis; Nunzio Motta; Maurizio De Crescenzi; Paola Castrucci
Source:
Carbon 2017 v.114 pp. 402-410
ISSN:
0008-6223
Subject:
absorption; carbon; carbon nanotubes; dissociation; electrical properties; electrodes; electrons; encapsulation; energy; hydrophobicity; photons; photovoltaic cells; physical properties; silicon; solar energy; wavelengths
Abstract:
... Bulk heterojunction films made of polychiral single-walled carbon nanotubes (SWCNTs) form efficient heterojunction solar cells with n-type crystalline silicon (n-Si), due to their superior electronic, optical, and electrical properties. The films are multi-functional, since their hierarchical surface morphology provides a biomimetical anti-reflective, air-stable, and hydrophobic encapsulation for ...
DOI:
10.1016/j.carbon.2016.12.050

4. 3D Printed Molds Encompassing Carbon Composite Electrodes To Conduct Multisite Monitoring in the Entire Colon

Author:
Patel Nirav; Fagan-Murphy Aidan; Covill Derek; Patel Bhavik Anil
Source:
Analytical chemistry 2017 v.89 no.21 pp. 11690-11696
ISSN:
1520-6882
Subject:
carbon; carbon nanotubes; colon; electrochemistry; geometry; mice; microelectrodes; monitoring; serotonin
Abstract:
... The activity of the colon is regulated by chemical signaling, of which serotonin (5-HT) is a key transmitter. Monitoring of mucosal 5-HT overflow has been achieved to date using microelectrodes on a small segment of colonic tissue; however, little is known if such measurements are reflective with regards to 5-HT signaling from the entire colon. This study focused on developing an electrochemical a ...
DOI:
10.1021/acs.analchem.7b03148

5. 3D Printing of Carbon Nanotubes-Based Microsupercapacitors

Author:
Yu Wei; Zhou Han; Li Ben Q.; Ding Shujiang
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.5 pp. 4597-4604
ISSN:
1944-8252
Subject:
adhesion; alcohols; capacitance; carbon nanotubes; droplets; drying; electrochemistry; electrolytes; gels; microelectrodes; polyvinyl alcohol; scanning electron microscopy; slurries; solvents
Abstract:
... A novel 3D printing procedure is presented for fabricating carbon-nanotubes (CNTs)-based microsupercapacitors. The 3D printer uses a CNTs ink slurry with a moderate solid content and prints a stream of continuous droplets. Appropriate control of a heated base is applied to facilitate the solvent removal and adhesion between printed layers and to improve the structure integrity without structure de ...
DOI:
10.1021/acsami.6b13904

6. 3D hierarchical porous structured carbon nanotube aerogel-supported Sn spheroidal particles: an efficient and selective catalyst for electrochemical reduction of CO₂ to formate

Author:
Zhipeng Chen; Shunyu Yao; Licheng Liu
Source:
Journal of materials chemistry A 2017 v.5 no.47 pp. 24651-24656
ISSN:
2050-7496
Subject:
carbon; carbon dioxide; carbon nanotubes; catalysts; cathodes; electrochemistry; formates; surface area; tin
Abstract:
... A 3D hierarchical porous structured carbon nanotube aerogel-supported Sn spheroidal particles (Sn/CNT-Agls) on carbon cloth (Sn/CNT-Agls/CC) electrode as a selective and efficient cathode for electrochemical reduction of CO₂ to formate is reported. The electrocatalytic activity of Sn/CNT-Agls/CC toward CO₂ reduction is greatly enhanced in comparison with carbon nanotube-supported Sn spheroidal par ...
DOI:
10.1039/c7ta07495f

7. 5,5-Dithiobis(2-nitrobenzoic acid) pyrene derivative-carbon nanotube electrodes for NADH electrooxidation and oriented immobilization of multicopper oxidases for the development of glucose/O2 biofuel cells

Author:
Fabien Giroud; Koichi Sawada; Masahito Taya; Serge Cosnier
Source:
Biosensors & bioelectronics 2017 v.87 pp. 957-963
ISSN:
0956-5663
Subject:
NAD (coenzyme); bilirubin oxidase; biosensors; carbon nanotubes; electrodes; electron transfer; glucose; laccase; microbial fuel cells; nitrobenzoic acids; oxidation; oxygen; pH; saturated conditions; silver; silver chloride
Abstract:
... We report the functionalization of multi-walled carbon nanotubes (MWCNTs) electrodes by a bifunctional nitroaromatic molecule accomplished via π-π interactions of a pyrene derivative. DTNB (5,5′-dithiobis(2-nitrobenzoic acid)) has the particularity to possess both electroactivable nitro groups and negatively charged carboxylic groups. The integration of the DTNB-modified MWCNTs was evaluated for d ...
DOI:
10.1016/j.bios.2016.09.054

8. Absorption-Dominated Electromagnetic Wave Suppressor Derived from Ferrite-Doped Cross-Linked Graphene Framework and Conducting Carbon

Author:
Biswas Sourav; Arief Injamamul; Panja Sujit Sankar; Bose Suryasarathi
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.3 pp. 3030-3039
ISSN:
1944-8252
Subject:
crosslinking; electromagnetic radiation; graphene; ferrimagnetic materials; fluorides; absorption; carbon nanotubes; graphene oxide; pollution; cost effectiveness; nanoparticles
Abstract:
... To minimize electromagnetic (EM) pollution, two key parameters, namely, intrinsic wave impedance matching and intense absorption of incoming EM radiation, must satisfy the utmost requirements. To target these requirements, soft conducting composites consisting of binary blends of polycarbonate (PC) and poly(vinylidene fluoride) (PVDF) were designed with doped multiwalled carbon nanotubes (MWCNTs) ...
DOI:
10.1021/acsami.6b14853

9. Accurate determination of the chiral indices of individual carbon nanotubes by combining electron diffraction and Resonant Raman spectroscopy

Author:
D.I. Levshov; H.N. Tran; M. Paillet; R. Arenal; X.T. Than; A.A. Zahab; Y.I. Yuzyuk; J.-L. Sauvajol; T. Michel
Source:
Carbon 2017 v.114 pp. 141-159
ISSN:
0008-6223
Subject:
Raman spectroscopy; carbon; carbon nanotubes; transmission electron microscopy
Abstract:
... The experimental approach combining high resolution transmission electron microscopy (HRTEM), electron diffraction (ED) and resonant Raman spectroscopy (RRS) on the same free-standing individual carbon nanotubes (CNT) is the most efficient method to determine unambiguously the intrinsic features of the Raman-active phonons. In this paper, we review the main results obtained by the approach regardi ...
DOI:
10.1016/j.carbon.2016.11.076

10. Accurate measurement of specific tensile strength of carbon nanotube fibers with hierarchical structures by vibroscopic method

Author:
Junbeom Park; Sung-Hyun Lee; Jaegeun Lee; Dong-Myeong Lee; Hayoung Yu; Hyeon Su Jeong; Seung Min Kim; Kun-Hong Lee
Source:
RSC advances 2017 v.7 no.14 pp. 8575-8580
ISSN:
2046-2069
Subject:
carbon nanotubes; probability; tensile strength
Abstract:
... The specific strength of a carbon nanotube (CNT) fiber can be estimated to be much higher than its real value when the linear density of the fiber is measured using the vibroscopic method. This is because CNT fibers are not made of a single fiber, as assumed in the standard ASTM procedure, but rather have a hierarchical structure composed of CNTs and CNT bundles. Based on careful investigation, a ...
DOI:
10.1039/c6ra26607j

11. Acetylcholinesterase biosensor based on electrochemically inducing 3D graphene oxide network/multi-walled carbon nanotube composites for detection of pesticides

Author:
Yanping Li; Ruixia Zhao; Lingyun Shi; Gaoyi Han; Yaoming Xiao
Source:
RSC advances 2017 v.7 no.84 pp. 53570-53577
ISSN:
2046-2069
Subject:
acetylcholinesterase; biosensors; carbofuran; carbon nanotubes; detection limit; electrochemistry; electrodes; electron transfer; enzyme kinetics; graphene oxide; nanocomposites; paraoxon
Abstract:
... A sensitive electrochemical biosensor for determining organophosphates (OPs) and carbamate pesticides has been achieved by immobilizing acetylcholinesterase (AChE) on electrochemically inducing 3D graphene oxide network/multi-walled carbon nanotube composites (e-GON–MWCNTs). The nanocomposites of e-GON–MWCNTs can provide a favorable environment for the immobilized AChE and improve the electron tra ...
DOI:
10.1039/c7ra08226f

12. Achieving Large Dielectric Property Improvement in Poly(ethylene vinyl acetate)/Thermoplastic Polyurethane/Multiwall Carbon Nanotube Nanocomposites by Tailoring Phase Morphology

Author:
Tingting Zhang; Jinghui Yang; Nan Zhang; Ting Huang; Yong Wang
Source:
Industrial & engineering chemistry process design and development 2017 v.56 no.13 pp. 3607-3617
ISSN:
1520-5045
Subject:
carbon nanotubes; dielectric properties; droplets; ethylene-vinyl acetate; melting; models; nanocomposites; polyurethanes; process design
Abstract:
... In this work, multiwall carbon nanotubes (MWCNTs) were melt compounded with a poly(ethylene vinyl acetate)/thermoplastic polyurethane (EVA/TPU) blend to prepare EVA/TPU/MWCNT blend nanocomposites. The effects of the blend morphology and selective localization of MWCNTs on the dielectric properties including dielectric constant and loss were systematically investigated. The results show that when t ...
DOI:
10.1021/acs.iecr.6b04763

13. Achieving a low electrical percolation threshold and superior mechanical performance in poly(l-lactide)/thermoplastic polyurethane/carbon nanotubes composites via tailoring phase morphology with the aid of stereocomplex crystallites

Author:
Zhenwei Liu; Hongwei Bai; Yuanlin Luo; Qin Zhang; Qiang Fu
Source:
RSC advances 2017 v.7 no.18 pp. 11076-11084
ISSN:
2046-2069
Subject:
carbon nanotubes; crosslinking; crystallites; melting; mixing; polyurethanes; strength (mechanics)
Abstract:
... Selective localization of conductive nanofillers in one phase of co-continuous polymer blends provides an efficient method to greatly reduce the electrical percolation threshold of conductive polymer composites. However, it is still a big challenge to achieve very low percolation thresholds because the critical content for the complete continuity of the selectively filled phase is generally high. ...
DOI:
10.1039/c6ra27401c

14. Acoustic spectroscopy for evaluating dimensions of cylindrical carbon nano-objects in colloidal systems

Author:
Victor V. Ivanov; Alexander A. Loshkarev; Maria F. Vlasova; Anna A. Lizunova; Natalya I. Sapronova; Yuri M. Tokunov
Source:
Colloids and surfaces 2017 v.520 pp. 640-648
ISSN:
0927-7757
Subject:
acoustics; atomic force microscopy; carbon; carbon nanotubes; colloids; nanofibers; spectroscopy; transmission electron microscopy; viscosity
Abstract:
... Ultrasound attenuation spectroscopy was applied to develop an express method for determining two dimensions of cylindrical nano-objects in colloids. For this we offered to perform measurements of attenuation spectra for two independent states of colloids: with the isotropic distribution of nano-objects and with orientation of nano-objects across the ultrasound beam. The oriented state of the nano- ...
DOI:
10.1016/j.colsurfa.2017.02.026

15. Active sites for oxygen reduction reaction on nitrogen-doped carbon nanotubes derived from polyaniline

Author:
Haijing Deng; Qian Li; Jingjun Liu; Feng Wang
Source:
Carbon 2017 v.112 pp. 219-229
ISSN:
0008-6223
Subject:
active sites; carbon; carbon nanotubes; catalysts; methanol; nitrogen; oxygen; pyrolysis; temperature
Abstract:
... Understanding exact electronic configurations of carbon atoms bonded by nitrogen (N) functionalities at atomic-level may literally open a door to advance metal-free carbon materials as efficient catalysts for the oxygen reduction reaction (ORR). In this paper, a set of well-defined carbon nanotubes with controlled doping of various N species, such as pyrrolic, pyridinic and graphitic N, have been ...
DOI:
10.1016/j.carbon.2016.11.014

16. Activity and stability analysis of covalent conjugated lysozyme-single walled carbon nanotubes: potential biomedical and industrial applications

Author:
Z. Borzooeian; M. E. Taslim; G. Borzooeian; O. Ghasemi; M. Aminlari
Source:
RSC advances 2017 v.7 no.77 pp. 48692-48701
ISSN:
2046-2069
Subject:
carbon nanotubes; fluorescence; guanidines; industrial applications; lysozyme; pH stability; phenylalanine; potassium chloride; potassium thiocyanate; protein unfolding; tryptophan; urea
Abstract:
... Conjugated protein–carbon nanotubes possess unique physicochemical properties that make them attractive to a wide range of applications. We explored the effects of covalent conjugation of lysozymes with single-walled carbon nanotubes (SWCNTs) on its activity and stability. Lysozyme was conjugated onto carboxyl-functionalized SWCNTs through carbodiimide method. Post conjugation changes of the enzym ...
DOI:
10.1039/c7ra07189b

17. Adsorption and Diffusion of Fluids in Defective Carbon Nanotubes: Insights from Molecular Simulations

Author:
Bucior Benjamin J.; Kolmakov German V.; Male JoAnna M.; Liu Jinchen; Chen De-Li; Kumar Prashant; Johnson J. Karl
Source:
Langmuir 2017 v.33 no.42 pp. 11834-11844
ISSN:
1520-5827
Subject:
adsorption; carbon; carbon dioxide; carbon nanotubes; diffusivity; liquids; models; sorption isotherms; topology
Abstract:
... Single-walled carbon nanotubes (SWNTs) have been shown from both simulations and experiments to have remarkably low resistance to gas and liquid transport. This has been attributed to the remarkably smooth interior surface of pristine SWNTs. However, real SWNTs are known to have various defects that depend on the synthesis method and procedure used to activate the SWNTs. In this paper, we study ad ...
DOI:
10.1021/acs.langmuir.7b02841

18. Adsorption of Carbon Tetrahalides on Coronene and Graphene

Author:
Ha Miran; Kim Dong Yeon; Li Nannan; Madridejos Jenica Marie L.; Park In Kee; Youn Il Seung; Lee Joonho; Baig Chunggi; Filatov Michael; Min Seung Kyu; Lee Geunsik; Kim Kwang S.
Source:
The Journal of Physical Chemistry C 2017 v.121 no.27 pp. 14968-14974
ISSN:
1932-7455
Subject:
adsorption; benzene; carbon nanotubes; electron transfer; energy; graphene; halogens; ionization; methodology; organic halogen compounds
Abstract:
... Since carbon tetrahalides CX₄ (X = Cl/Br) are adsorbed on carbon nanotubes and graphene sheets, we have studied the structures, adsorption energies, and electronic properties of CX₄ adsorbed on benzene, coronene, and graphene using dispersion corrected density functional theory (DFT) with hybrid functionals. As compared with the benzene–CX₄ complexes (with binding energy of ∼14/15 kJ/mol) where el ...
DOI:
10.1021/acs.jpcc.7b04939

19. Adsorption of Estrogen Contaminants by Graphene Nanomaterials under Natural Organic Matter Preloading: Comparison to Carbon Nanotube, Biochar, and Activated Carbon

Author:
Jiang Luhua; Liu Yunguo; Liu Shaobo; Zeng Guangming; Hu Xinjiang; Hu Xi; Guo Zhi; Tan Xiaofei; Wang Lele; Wu Zhibin
Source:
Environmental Science & Technology 2017 v.51 no.11 pp. 6352-6359
ISSN:
1520-5851
Subject:
activated carbon; adsorbents; adsorption; biochar; carbon nanotubes; environmental hazards; estradiol; graphene; hydrophobicity; organic matter
Abstract:
... Adsorption of two estrogen contaminants (17β-estradiol and 17α-ethynyl estradiol) by graphene nanomaterials was investigated and compared to those of a multi-walled carbon nanotube (MWCNT), a single-walled carbon nanotube (SWCNT), two biochars, a powdered activated carbon (PAC), and a granular activate carbon (GAC) in ultrapure water and in the competition of natural organic matter (NOM). Graphene ...
DOI:
10.1021/acs.est.7b00073

20. Adsorption of Organic Compounds onto Multiwall and Nitrogen-Doped Carbon Nanotubes: Insights into the Adsorption Mechanisms

Author:
P. E. Díaz-Flores; J. A. Arcibar-Orozco; N. V. Perez-Aguilar; J. R. Rangel-Mendez; V. M. Ovando Medina; J. A. Alcalá-Jáuegui
Source:
Water, air, and soil pollution 2017 v.228 no.4 pp. 133
ISSN:
0049-6979
Subject:
adsorbents; adsorption; aqueous solutions; carbon nanotubes; geometry; hydrogen bonding; nitrogen; oxygen; p-nitrophenol; pH; phenol; pyridines; sorption isotherms
Abstract:
... In this work, the single species and competitive (multispecies) adsorption of pyridine, phenol, and p-nitrophenol present in aqueous solution on multiwalled carbon nanotubes (MWCNTs), and nitrogen-doped carbon nanotubes (CNx) were studied. The physicochemical properties of MWCNTs and CNx were related to their capability for the adsorption of the organic molecules. Adsorption isotherms were develop ...
DOI:
10.1007/s11270-017-3314-8