Active Metals 1995
DOI: 10.1002/9783527615179.ch07
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Electrochemical Methods in the Synthesis of Nanostructured Transition Metal Clusters

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Cited by 40 publications
(40 citation statements)
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“…[62] Later, these nanoparticles were prepared via chemical reduction in the liquid phase [63] or electrochemically. [64] Thus obtained nanoparticles are stabilized by electrochemical and steric conceptions, as halogen ions adsorb very strongly on the metal surface, while the surrounding tetraalkylammonium cations constrain close contact between the nanoparticles as illustrated in Fig. 3.…”
Section: Stabilization By Ionic Liquidmentioning
confidence: 97%
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“…[62] Later, these nanoparticles were prepared via chemical reduction in the liquid phase [63] or electrochemically. [64] Thus obtained nanoparticles are stabilized by electrochemical and steric conceptions, as halogen ions adsorb very strongly on the metal surface, while the surrounding tetraalkylammonium cations constrain close contact between the nanoparticles as illustrated in Fig. 3.…”
Section: Stabilization By Ionic Liquidmentioning
confidence: 97%
“…Although tetrahexyl-, tetrabutyl-and tetraoctylammonium bromide (and chloride) have a melting point around 100°C and above (and are therefore classified as molten salts), they provide the first examples describing the ability of ionic liquids to stabilize nanoparticles. [63,64] Note that the use of imidazolium based ionic liquids for the stabilization of Ir nanoparticles was reported much later in 2002. [65] Fig.…”
Section: Stabilization By Ionic Liquidmentioning
confidence: 99%
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“…14 Entre os métodos químicos, destacam-se: (iii) redução de sais metálicos: os sais são reduzidos na presença de agentes estabilizantes, tais como citrato de sódio, tioéteres, polivinilpirrolidona, que também passivam sua superfície e evitam que os átomos se agreguem muito rapidamente; 15 (iv) decomposição térmica: envolve a decomposição de complexos de metais de transição de baixa valência (geralmente organometálicos) na presença de agentes estabilizantes; 15,16 (v) síntese eletroquímica: partindo da dissolução oxidativa de um metal no ânodo, os íons em solução migram para o cátodo, onde se reduzem na forma atômica, iniciando um processo de nucleação para a formação da partícula. 17 Para extrair informações sobre os nanoclusters e as nanoligas sintetizadas, várias técnicas de caracterização podem ser empregadas. A microscopia eletrônica de varredura (SEM, do inglês Scanning Electron Microscopy), que informa a respeito da topologia da amostra, isto é, sobre a morfologia, o tamanho e a distribuição de tamanho das partículas.…”
Section: Introductionunclassified