Energy and environmental applications of carbon nanotubes

Tan, Chin Wei; Tan, Ke; Ong, Yit Thai; Mohamed, Abdul Rahman; Zein, Sharif Hussein Sharif; Tan, Soon Huat

doi:10.1007/s10311-012-0356-4

Cited by 138 publications

(54 citation statements)

References 78 publications

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“…Because of their unique physical and chemical properties, carbon nanotubes (CNTs) are considered to be excellent candidates for many potential applications such as nanocomposite materials, nanoelectronics, catalysis and sensors [1][2][3][4][5][6][7][8][9][10]. Due to their great hardness and toughness, multiwall CNTs (MWCNTs) keep their morphology and structure even at high nanoparticle loadings [11].…”

Section: Introductionmentioning

confidence: 99%

The effect of concentration ratio and type of functional group on synthesis of CNT–ZnO hybrid nanomaterial by an in situ sol–gel process

Largani

Pasha

2016

Int Nano Lett

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In this research, MWCNT-ZnO hybrid nanomaterials were synthesized by a simple sol-gel process using Zn(CH 3 COO) 2 Á2H 2 O and functionalized MWCNT with carboxyl(COOH) and hydroxyl(OH) groups. Three different mass ratios of MWCNT:ZnO = 3:1, 1:1 and 1:3 were examined. The prepared nanomaterials were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR). Successful growth of MWCNT-ZnO hybrids for both COOH and OH functional groups and all the three mass ratios were obtained. The ZnO nanoparticles attached on the surfaces of CNTs have rather spherical shapes and hexagonal crystal structure. By increasing the concentration of ZnO, the number and average size of ZnO nanoparticles decorated the body of CNTs in hybrid structures increase. By increasing the ZnO precursor, the distribution of ZnO nanoparticles that appeared on the surface of CNTs becomes more uniform. The SEM observation beside EDX analysis revealed that at the same concentration ratio the amount of ZnO loading on the surface of MWCNT-COOH is more than MWCNT-OH. Moreover, the average size of ZnO nanoparticles attached on the surface of COOH functionalized CNTs is relatively smaller than that of OH functionalized ones.

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Section: Introductionmentioning

confidence: 99%

The effect of concentration ratio and type of functional group on synthesis of CNT–ZnO hybrid nanomaterial by an in situ sol–gel process

Largani

Pasha

2016

Int Nano Lett

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“…This property is appealing for wastewater treatment (Tan et al 2012), but also threatening for organisms that could interact with contaminants adsorbed on the surface of carbon nanotubes. Our goal in this study was to evaluate the effect of the presence of SWCNT on the toxicity of Cd to the crustacean D. magna.…”

Section: Resultsmentioning

confidence: 99%

“…Among these nanomaterials, single-walled carbon nanotubes (SWCNT) offer many benefits such as toughness, strength and high conductivity making them of interest for many applications in material science (Dresselhaus et al 2004). Carbon nanotubes are also widely applied for environmental monitoring and wastewater treatment due to their large surface area (Tan et al 2012). If the large surface area of SWCNT enhance their ability to adsorb hydrocarbons or metals present in water or soil and hence be of use for decontamination purpose (Baun et al 2008, Qu et al 2014, it can also modify the mobility/availability of these contaminants to organisms.…”

Section: Introductionmentioning

confidence: 99%

Toxic Effect of Single Walled Carbon Nanotubes Combined with Cadmium to the Crustacean <i>Daphnia magna</i>

Revel

Fournier

Robidoux

2015

ILNS

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Abstract. The aim of this study was to assess the impact of single-walled carbon nanotubes (SWCNT) on the toxicity of cadmium (Cd) using the crustacean Daphnia magna. LC50 of Cd and SWCNT alone and combined were calculated and compared. Sorption of Cd on SWCNT was also quantified in separate batch experiments. Results showed that the maximum adsorption of Cd onto SWCNT calculated by the Langmuir equation was 24.4 mg kg-1. LC50s for Cd and SWCNT alone were 252.3 µg L -1 and 1400 µg L -1 , respectively. In the presence of 500 and 1000 µg L -1 of SWCNT, Cd LC50s were 127.2 and 120.1 µg L -1 respectively. Therefore, Cd toxicity increased when organisms were exposed to both contaminants which indicated that SWCNT induces a synergistic toxic effect on the survival of D. magna. It appears that even if SWCNT had a low adsorption capacity for Cd, toxicity of the metal can be increased. Our study shows the complexity of SWCNT toxicity and how the understanding of their interactions with other contaminants is crucial to determine the consequences of their release into the environment.

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“…It can be used for hydrogen storage and gas absorption (Tan et al 2012). Moreover, MWCNTs were used to modify glass fiber reinforced polymer (GFRP) laminates to create electrically conductive networks in the matrix for structural health monitoring applications (Viets et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Improving Impact Resistance of Polymer Concrete Using CNTs

Daghash

Soliman

Kandil

et al. 2016

Int J Concr Struct Mater

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Polymer concrete (PC) has been favoured over Portland cement concrete when low permeability, high adhesion, and/or high durability against aggressive environments are required. In this research, a new class of PC incorporating Multi-Walled Carbon Nanotubes (MWCNTs) is introduced. Four PC mixes with different MWCNTs contents were examined. MWCNTs were carefully dispersed in epoxy resin and then mixed with the hardener and aggregate to produce PC. The impact strength of the new PC was investigated by performing low-velocity impact tests. Other mechanical properties of the new PC including compressive, flexural, and shear strengths were also characterized. Moreover, microstructural characterization using scanning electron microscope and Fourier transform infrared spectroscopy of PC incorporating MWCNTs was performed. Impact test results showed that energy absorption of PC with 1.0 wt% MWCNTs by weight of epoxy resin was significantly improved by 36 % compared with conventional PC. Microstructural analysis demonstrated evidence that MWCNTs significantly altered the chemical structure of epoxy matrix. The changes in the microstructure lead to improvements in the impact resistance of PC, which would benefit the design of various PC structural elements.

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Energy and environmental applications of carbon nanotubes

Cited by 138 publications

References 78 publications

The effect of concentration ratio and type of functional group on synthesis of CNT–ZnO hybrid nanomaterial by an in situ sol–gel process

The effect of concentration ratio and type of functional group on synthesis of CNT–ZnO hybrid nanomaterial by an in situ sol–gel process

Toxic Effect of Single Walled Carbon Nanotubes Combined with Cadmium to the Crustacean <i>Daphnia magna</i>

Improving Impact Resistance of Polymer Concrete Using CNTs

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