In situ growth of gold nanoparticles on SiO2/lanthanide–polyoxometalates composite spheres: An efficient catalytic and luminescent system

Wang, Jun; Lü, Xiaohong; Fan, Shuzhen; Zhao, Weiqian; Li, Wuke

doi:10.1016/j.jallcom.2015.01.167

Cited by 18 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…M charge transfer can occur under UV irradiation [10,15,16]. Interestingly, the reduced form of heteropolyacid can act as a strong reducing reagent which can be readily re-oxidized by various chemicals especially as metal ions [3,15].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Gold nanoparticles Wells–Dawson heteropolyacid nanocomposite film as an effective nanocatalyst in photocatalytic removal of azo dyes from wastewaters

et al. 2017

View full text Add to dashboard Cite

A novel nanophotochromic film consisting of Au nanoparticles and Wells-Dawson-type heteropolyacid, [H 6 P 2 W 18 O 62 ], was prepared by combination of sol-gel and photoreduction method. This film was characterized by UV-visible spectroscopy, particle size distribution, Field emission scanning electron microscopy, and energy dispersive spectroscopy analysis. For the preparation of Au nanoparticles, heteropolyacid, [H 6 P 2 W 18 O 62 ] was used in form of composite film as a green reductant and stabilizer. Au nanoparticles with particle size in the range of 10-20 nm were synthesized and monodispersed in the nanocomposite using dip coating method. The photocatalytic activity of this composite film was studied in the decolorization of methyl orange (MeO) and methyl red (MR) as carcinogenic pollutant dyes using UV irradiation. The pseudofirst order rate constants was established and calculated for these reactions. Comparison of this composite film with the prepared composite by Preyssler heteropolyacid disclosed that the structure of heteropolyacid can affect loading amount of Au nanoparticles.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Thus, much effort has been made into their synthesis and characterization [1]. Polyoxometalates (POMs) have been extensively used in the preparation of Au nanoparticles reported in various reports [2][3][4][5]. The chemistry of POMs and their salts has been extensively reviewed [6,7].…”

Section: Introductionmentioning

confidence: 99%

Gold nanoparticles Wells–Dawson heteropolyacid nanocomposite film as an effective nanocatalyst in photocatalytic removal of azo dyes from wastewaters

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Polyoxometalates (POMs), are a unique class of metal-oxo clusters, widely studied in different scientific fields such as catalysis, magnetism, medicine and functional materials due to their versatile structures and efficient properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. One of the unique attributes of polyoxometalates is their electron acceptor property which allows them to form reduced and mixed valence compounds thus promoting their redox switching behavior [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Two New Tetravacant Organometallic Keggin-Type Heteropolyoxomolybdates-Supported Manganese Carbonyl Derivatives

et al. 2017

View full text Add to dashboard Cite

Two novel heteropolyoxomolybdate [XMo8O31]n− (X = Ge(1) or P(2)) manganese carbonyl derivatives [(CH3)4N]6H6{MnII(GeMo8O31)[MnI(CO)3]2}2·12H2O (1) and [(CH3)4N]4H6{MnII(PMo8O31)[MnI(CO)3]2}2·14H2O (2), have been successfully synthesized and characterized in the solid state by single crystal X-ray diffraction, IR and thermogravimetric analysis, and in solution by UV-Vis spectroscopy and electrochemistry. The two polyoxomolybdate-based organometallic compounds 1 and 2 represent rare examples of transition metal sandwich-based polyoxometalate metal carbonyl derivatives (PMCDs), in which the organic-inorganic hybrids are composed of four Mn(CO)3+ groups symmetrically occupied the tetravacant sites of dimeric heteropolyoxomolybdate {Mn2(XMo8O31)2}n− through MnI-O-Mo bonds. The carbonyl functionalized Mn atoms are octahedrally coordinated via three μ2-oxygens of the [XMo8O31]n− unit and three carbonyl carbon atoms. Interestingly, 1 and 2 form a psedocuboidal ring Mn(CO)3Mo3O12 with {Mn(CO)3}+ occupying the three fold axis of the Mo3O12 octahedral triad. Beside this, the two centrally placed adjacent MnII atoms show intramolecular Mn∙∙∙Mn interactions of 3.11 and 3.16 Å in 1 and 2, respectively. Significant n→π* and O···O intermolecular interactions between the orthogonally aligned adjacent carbonyl groups through the overlap of lone-pair electrons on oxygen atoms with the antibonding orbital (π*) of the adjacent carbony carbon atom of the subsequent units in 1 and 2 were observed. The electrochemical properties of the two compounds were also been investigated.

show abstract

Recent Advances in Hybrid Materials of Metal Nanoparticles and Polyoxometalates

2022

View full text Add to dashboard Cite

Polyoxometalates (POMs), anionic metal-oxygen nanoclusters that possess various composition-dependent properties, are widely used to modify the existing properties of metal nanoparticles and to endow them with new ones. Herein, we present an overview of recent advances in hybrid materials that consist of metal nanoparticles and POMs. Following a brief introduction on the inception of this area and its development, representative properties and applications of these materials in various fields such as electrochemistry, photochemistry, and catalysis are introduced. We discuss how the combination of two classic inorganic materials facilitates cooperative and synergistic behavior, and we also give personal perspectives on the future development of this field.

show abstract

In situ growth of gold nanoparticles on SiO2/lanthanide–polyoxometalates composite spheres: An efficient catalytic and luminescent system

Cited by 18 publications

References 33 publications

Gold nanoparticles Wells–Dawson heteropolyacid nanocomposite film as an effective nanocatalyst in photocatalytic removal of azo dyes from wastewaters

Gold nanoparticles Wells–Dawson heteropolyacid nanocomposite film as an effective nanocatalyst in photocatalytic removal of azo dyes from wastewaters

Two New Tetravacant Organometallic Keggin-Type Heteropolyoxomolybdates-Supported Manganese Carbonyl Derivatives

Recent Advances in Hybrid Materials of Metal Nanoparticles and Polyoxometalates

Contact Info

Product

Resources

About