In situ growth of silver nanoparticles in mesoporous silica by spray pyrolysis

Ahn, Ki Woong; Lim, Je Young; Yang, Ji Hye; Kim, Sun-Geon

doi:10.1007/s11051-009-9810-z

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…• C and acted very much like liquid so that it could not be easily confined in the mesospheres (Ahn et al 2010). By the same token, clear nickel crystallites should have come up at 600…”

Section: Effects Of Reactor Temperature On the Mesophase Morphology Amentioning

confidence: 98%

“…We had proposed a new in situ synthesis, applying the aerosol reactor to prepare silver-dispersed mesoporous silica (Ahn et al 2010). In the synthesis precursor solution was prepared by the same recipe as that for pure mesoporous silica except including silver nitrate.…”

Section: Introductionmentioning

confidence: 99%

“…• C for MPS-10Ni as in MPS and MPS-10Ag, suggesting that the best relative regularity was related with the P123 decomposition (Ahn et al 2010). In addition, the nickel-silica mesocomposites, spray pyrolyzed at 1000…”

mentioning

confidence: 96%

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Nickel-Impregnated Mesoporous Silica Prepared in an Aerosol Reactor

Ahn¹,

Hyun²,

Kim³

2012

Aerosol Science and Technology

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Nickel-impregnated mesoporous silica was prepared from a solution of TEOS, metal nitrate and Pluronic P123 in a short flight (<30s) through an aerosol reactor by changing the reactor temperature and metal concentration (at% Ni to Si). The dispersion of the metal and morphology of the composite mesospheres were observed with TEM, SAXS, and XRD. The maximum in the d spacing was observed at 400• C with the nickel concentration in mesospheres fixed at 10 at%. On the contrary, the minimum appeared at 10 at% Ni at the reactor temperature fixed at 600• C. Nickel mostly remained either inside mesopores or silica wall (1) in the range of reactor temperatures between 150 and 1000• C with 10 at% and (2) in the range of metal concentrations up to 100 at% at 600• C. Post calcination provided nickel more freedom to penetrate silica wall as the mesophase was spray pyrolyzed at lower temperature. Most findings could be explained by a new model proposed based on metal-promoting formation of silica wall.

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“…• C and acted very much like liquid so that it could not be easily confined in the mesospheres (Ahn et al 2010). By the same token, clear nickel crystallites should have come up at 600…”

Section: Effects Of Reactor Temperature On the Mesophase Morphology Amentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nickel-Impregnated Mesoporous Silica Prepared in an Aerosol Reactor

Ahn¹,

Hyun²,

Kim³

2012

Aerosol Science and Technology

Self Cite

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show abstract

“…This becomes particularly troublesome as we move into porous supports where pores can easily be completely blocked, effectively limiting the active surface areas. As with all areas of material science and chemistry, methods have advanced to facilitate more uniform dispersion of noble metals on silica supports. ,− Instead of allowing simple, and oftentimes weak, metal-salt–silanol/silicate interactions to drive surface precipitation, new methods to focus the interactions have arisen. Prior to the dispersion of metal nanoparticles, functional groups are often decorated onto the mesoporous silica surface by a surface modification process.…”

Section: Metal Dispersion On Mesoporous Silica Surfacestrengths and ...mentioning

confidence: 99%

Hybrid Mesoporous Silica/Noble-Metal Nanoparticle Materials—Synthesis and Catalytic Applications

Davidson

Leong

et al. 2018

ACS Appl. Nano Mater.

121

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Due to the uniform and stable pore structure, mesoporous silica has attracted increasing research attention as a catalyst support material. As a large family of mesoporous silica-supported materials, noble-metal nanoparticles supported on mesoporous silica catalysts have demonstrated desirable properties across a broad platform of reactions. In this review article, we first introduce systems of metal nanoparticles dispersed on mesoporous silica, and then, we focus on next generation systems, in which the noble metal is not supported on the mesoporous silica but rather entrapped/intercalated within the silica matrix, thus enhancing particle stability and in some cases, enhanced activity. Herein, research and future directions on both synthesizing hybrid noble-metal nanoparticles/mesoporous silica composite catalysts and their resultant properties will be discussed.

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Recent progress in the synthesis of silver nanowires and their role as conducting materials

Fahad

Zain‐ul‐Abdin

et al. 2018

J Mater Sci

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In situ growth of silver nanoparticles in mesoporous silica by spray pyrolysis

Cited by 6 publications

References 16 publications

Nickel-Impregnated Mesoporous Silica Prepared in an Aerosol Reactor

Nickel-Impregnated Mesoporous Silica Prepared in an Aerosol Reactor

Hybrid Mesoporous Silica/Noble-Metal Nanoparticle Materials—Synthesis and Catalytic Applications

Recent progress in the synthesis of silver nanowires and their role as conducting materials

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