Long-chain amine-templated synthesis of gallium sulfide and gallium selenide nanotubes

Abstract

We describe the soft chemistry synthesis of amine-templated gallium chalcogenide nanotubes through the reaction of gallium(iii) acetylacetonate and the chalcogen (sulfur, selenium) using a mixture of long-chain amines (hexadecylamine and dodecylamine) as a solvent. Beyond their role as solvent, the amines also act as a template, directing the growth of discrete units with a one-dimensional multilayer tubular nanostructure. These new materials, which broaden the family of amine-stabilized gallium chalcogenides, can be tentatively classified as direct large band gap semiconductors. Their preliminary performance as active material for electrodes in lithium ion batteries has also been tested, demonstrating great potential in energy storage field even without optimization.

Synthesis of layered platelets by self-assembly of rhenium-based clusters directed by long-chain amines

“…The distance between layers was calculated from these peaks, yielding a value of 30.3 Å, similar to the step distances measured by AFM and also in good agreement with the interlayer spacing found in other materials which contain long-chain amines between layers. 35,50,51 A comparison of the fourier-transform infrared (FTIR) spectra of the platelets and the long-chain amines confirms the presence of the latter in the nanostructures (Fig. 3b).…”

“…23,30 This results in the stabilisation of the final structure, avoiding agglomeration and simplifying the further processing, besides that in some cases the amphiphilic molecules also become part of the structure, acting as a scaffold. 31,32 For example, dodecanethiol has been successfully utilised for the synthesis of sizemonodisperse gold nanoparticles, 33 while long-chain amines successfully templated the growth of nanotubes of vanadium oxide 34 or gallium chalcogenides, 35 and a mixture of polymers and alcohols was used to template the growth of ultrathin 2D nanostructures of metal oxides, which do not have a layered structure in their bulk form. 28 In a recent report, the size and the number of layers of 2D MSe 2 (M: Mo, W) were effectively controlled through the different interactions of the growing MSe 2 structure with the functional group of the amphiphilic solvent (oleylamine, oleic acid or oleyl alcohol).…”

Synthesis and Characterization of Pb@GaS Core–Shell Fullerene-Like Nanoparticles and Nanotubes

“…7 and 8), the yield being only a few percent. INT-GaS had been predicted 11,12 and synthesized previously, 13,15,16,37 although never with the type of photothermal, nominally nonreactive process used here. The diameter of IF-GaS varied from 50 nm up to a few hundred nm.…”

Неэмпирические Расчеты Структуры И Устойчивости Нанотрубок На Основе Монохалькогенидов Галлия

“…В настоящее время нанотрубки на основе халькогенидов галлия успешно синтезированы [10,11]. Так, имеется сообщение о синтезе многостенных трубок сульфида галлия (II) непосредственно из порошков серы и галлия [10].…”

“…Так, имеется сообщение о синтезе многостенных трубок сульфида галлия (II) непосредственно из порошков серы и галлия [10]. Получены нанотрубки GaS и GaSe, стабилизированные аминами [11]. Композитный материал на основе GaS, нанесенного на поверхность одностенных углеродных нанотрубок, является высокоэффективным анодом для литий-ионных батарей [12].…”