Preparation of Layered Double Hydroxide/Carbon Nanotubes Composite and its Dispersion in Organic Solvents

doi:10.7503/cjcu20120519

Abstract

Abstract:

Layered double hydroxide(LDH)/carbon nanotubes(CNTs) composites were prepared by urea method in the aqueous suspension of CNTs. Effect of CNTs concentration on the morphologies and structures of LDH/CNTs composites was investigated in detail. The results showed that in the case of low (<0.2 g/L) or very high (>4.0 g/L) CNTs concentration, there was a fairly wide size distribution for the LDH particles in LDH/CNTs while distributes uniformly relatively in the region of 0.2—4.0 g/L. The introduction of CNTs has a little influence on the size and structure of LDH crystals. By means of decarbonation treatment and further ion-exchange using surfactant sodium dodecylbenzene sulfonate(SDBS), the LDH/CNTs composites with interlayer anion of dodecylbenzene sulfo-group(DBS-LDH/CNTs) were obtained. Then the DBS-LDH/CNTs composites were dispersed in several organic solvents, respectively. The results revealed that the suspension of DBS-LDH/CNTs in 1-butanol, ethanol and xylene kept stable in a long duration while sedimentated quickly in tetrahydrofuran. In addition, the delamination extent for LDH in these solvents ranked as follows: 1-butanol >ethanol>xylene>tetrahydrofuran.

Key words: Layered double hydroxide(LDH), Carbon nanotubes(CNTs), Composite, Delamination

CLC Number:

O614

TrendMD:

FU Hua-Kang, YE Wei-Juan, LIU Meng-Ying, HU Ji, DU Miao, ZHENG Qiang. Preparation of Layered Double Hydroxide/Carbon Nanotubes Composite and its Dispersion in Organic Solvents[J]. Chem. J. Chinese Universities, 2013, 34(3): 538.

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Preparation of Layered Double Hydroxide/Carbon Nanotubes Composite and its Dispersion in Organic Solvents

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