Pt nanoparticles supported on SBA-15: Synthesis, characterization and applications in heterogeneous catalysis

Zhu, Junjiang; Wang, Tao; Xu, Xuelian; Xiao, Ping; Li, Jinlin

doi:10.1016/j.apcatb.2012.11.005

Cited by 120 publications

(89 citation statements)

References 130 publications

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“…The IWI is an effective method for the preparation of supported noble metal [37][38][39] or metal oxide catalysts, [40][41][42] by which the metal precursors can be effectively permeated into the pores of the support by capillary pressure, while CO oxidation is not only the main route of removing CO pollutants but also a widely used model reaction to evaluate the catalytic performances of materials. The IWI is an effective method for the preparation of supported noble metal [37][38][39] or metal oxide catalysts, [40][41][42] by which the metal precursors can be effectively permeated into the pores of the support by capillary pressure, while CO oxidation is not only the main route of removing CO pollutants but also a widely used model reaction to evaluate the catalytic performances of materials.…”

Section: Introductionmentioning

confidence: 99%

Templating synthesis of metal oxides by an incipient wetness impregnation route and their activities for CO oxidation

Gong

Zhu

et al. 2015

New J. Chem.

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Various metal oxides, including Co 3 O 4 , NiO, CeO 2 and Ce 0.7 Cu 0.3 O 2 , were synthesized by an incipient wetness impregnation (IWI) route using mesoporous silica SBA-16 and SBA-15 as templates, and their catalytic performances were evaluated by the CO oxidation model reaction. Templating is a powerful technology for the preparation of materials with desired morphology, while the IWI route guarantees the metal in solution permeating into the pores of the template by a capillary pressure. Thus mesoporous metal oxides with near-perfect surface morphologies, such as three-dimensional nano-sized particles and two-dimensional nanowires, and controlled particle size were prepared from shaped templates using the IWI route. Characterizations such as TEM and H 2 -TPR measurements indicated that Co 3 O 4 replicated from SBA-16 hydrolyzed at 80 1C (namely, Co 3 O 4 -16_80) has the smallest particle size, the highest surface area and the strongest reducibility, thus leading to the best activity for CO oxidation.Furthermore, the sample can be reused with no loss of activity in the second run, and exhibited good long-term stability, with less than 6% decrease in the activity after running at 120 1C for 36 h. † Electronic supplementary information (ESI) available: Data obtained from H 2 -TPD; comparison of activity with that in literature; small-angle XRD patterns; N 2 physisorption isotherms; TEM and SEM images; UV-Raman spectra and CO oxidation activity of other metals NiO, CeO 2 and Ce 0.7 Cu 0.3 O 2 . See

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Section: Introductionmentioning

confidence: 99%

Templating synthesis of metal oxides by an incipient wetness impregnation route and their activities for CO oxidation

Gong

Zhu

et al. 2015

New J. Chem.

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“…Recently, the interest toward the hierarchical hybrid nanostructures, especially highly dispersed metal particles in functional matrix, has continuously increased due to their unique structures and excellent properties [17][18][19][20][21][22]. For instance, highly dispersed nanoparticles in/on a matrix with a well-defined pore structure often result in enhanced catalytic activity and stability [23][24][25][26]. In particular, carbon sphere matrix can serve as shell/cover to trap up active Ag NPs and effectively prevent their agglomeration even though the NPs present a high particle-density in the matrix [27].…”

Section: Introductionmentioning

confidence: 99%

Preparation of hollow multiple-Ag-nanoclustes-C-shell nanostructures and their catalytic properties

Dong

Zhang

et al. 2016

Applied Catalysis B: Environmental

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“…[1][2][3] Owing to their intrinsic high surface areas, tunable pore channels, and good thermal stability, the OMS has been regarded as an ideal catalyst support for immobilizing small-sized metal nanoparticles (NPs) with uniform dispersion. [4,5] Meanwhile, it has been demonstrated that the confinement effect of the channels could prevent possible growth of metal NPs to large particles even under harsh conditions. For instance, Dai's group succeeded in synthesizing Au NPs in SBA-15t hroughadeposition-precipitation method,b y which they obtained Au@SBA-15 materials that exhibited excellent catalytic activities and ah igh resistance to sintering during the reactionprocedures.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Well‐Dispersed Pt Nanoparticles in Mesoporous Silica with Large Open Spaces and Their Catalytic Applications

Liu

Chen

et al. 2016

Chemistry A European J

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In this paper, a facile strategy is reported for the preparation of well-dispersed Pt nanoparticles in ordered mesoporous silica (Pt@OMS) by using a hybrid mesoporous phenolic resin-silica nanocomposite as the parent material. The phenolic resin polymer is proposed herein to be the key in preventing the aggregation of Pt nanoparticles during their formation process and making contributions both to enhance the surface area and enlarge the pore size of the support. The Pt@OMS proves to be a highly active and stable catalyst for both gas-phase oxidation of CO and liquid-phase hydrogenation of 4-nitrophenol. This work might open new avenues for the preparation of noble metal nanoparticles in mesoporous silica with unique structures for catalytic applications.

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Pt nanoparticles supported on SBA-15: Synthesis, characterization and applications in heterogeneous catalysis

Cited by 120 publications

References 130 publications

Templating synthesis of metal oxides by an incipient wetness impregnation route and their activities for CO oxidation

Templating synthesis of metal oxides by an incipient wetness impregnation route and their activities for CO oxidation

Preparation of hollow multiple-Ag-nanoclustes-C-shell nanostructures and their catalytic properties

Facile Fabrication of Well‐Dispersed Pt Nanoparticles in Mesoporous Silica with Large Open Spaces and Their Catalytic Applications

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