"Cat in a bag" recycling of dendrimer encapsulated Au nanoparticles by use of dialysis membrane bag in the reduction of 4-nitrophenol: Proof of heterogeneous catalysis

Mulisa Nemanashi; Reinout Meijboom

doi:10.1016/j.catcom.2016.05.007

"Cat in a bag" recycling of dendrimer encapsulated Au nanoparticles by use of dialysis membrane bag in the reduction of 4-nitrophenol: Proof of heterogeneous catalysis

Mulisa Nemanashi, Reinout Meijboom

Chemical Sciences

University of Johannesburg

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Generation 4 PAMAM-NH₂ dendrimers were used as template to synthesize Au₁₃- and Au₁₀₀-dendrimer-encapsulated nanoparticles (Au-DENs) with an average diameter of 2.1 ± 0.3 and 3.1 ± 0.5 nm respectively. Au-DENs were characterized using various techniques. Catalytic recycling of Au-DENs using a dialysis membrane bag in the reduction of 4-NP is presented. The reduction process was primarily monitored by UV-vis spectroscopy at around λ 400 nm. The catalyst was found to exhibit a very good activity and stability even after more than 3 catalytic reaction cycles without any leaching, confirming that the reduction of 4-NP is purely a heterogeneous reaction.

Original language	English
Pages (from-to)	53-57
Number of pages	5
Journal	Catalysis Communications
Volume	83
DOIs	https://doi.org/10.1016/j.catcom.2016.05.007
Publication status	Published - 5 Aug 2016

Keywords

Dendrimer
Gold
Heterogeneous catalysis
Nitrophenol reduction

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

Access to Document

10.1016/j.catcom.2016.05.007

Cite this

@article{1d3062d011134d4998ec1ff1535e5ac3,

title = "{"}Cat in a bag{"} recycling of dendrimer encapsulated Au nanoparticles by use of dialysis membrane bag in the reduction of 4-nitrophenol: Proof of heterogeneous catalysis",

abstract = "Generation 4 PAMAM-NH2 dendrimers were used as template to synthesize Au13- and Au100-dendrimer-encapsulated nanoparticles (Au-DENs) with an average diameter of 2.1 ± 0.3 and 3.1 ± 0.5 nm respectively. Au-DENs were characterized using various techniques. Catalytic recycling of Au-DENs using a dialysis membrane bag in the reduction of 4-NP is presented. The reduction process was primarily monitored by UV-vis spectroscopy at around λ 400 nm. The catalyst was found to exhibit a very good activity and stability even after more than 3 catalytic reaction cycles without any leaching, confirming that the reduction of 4-NP is purely a heterogeneous reaction.",

keywords = "Dendrimer, Gold, Heterogeneous catalysis, Nitrophenol reduction",

author = "Mulisa Nemanashi and Reinout Meijboom",

year = "2016",

month = aug,

day = "5",

doi = "10.1016/j.catcom.2016.05.007",

language = "English",

volume = "83",

pages = "53--57",

journal = "Catalysis Communications",

issn = "1566-7367",

publisher = "Elsevier",

}

TY - JOUR

T1 - "Cat in a bag" recycling of dendrimer encapsulated Au nanoparticles by use of dialysis membrane bag in the reduction of 4-nitrophenol

T2 - Proof of heterogeneous catalysis

AU - Nemanashi, Mulisa

AU - Meijboom, Reinout

PY - 2016/8/5

Y1 - 2016/8/5

N2 - Generation 4 PAMAM-NH2 dendrimers were used as template to synthesize Au13- and Au100-dendrimer-encapsulated nanoparticles (Au-DENs) with an average diameter of 2.1 ± 0.3 and 3.1 ± 0.5 nm respectively. Au-DENs were characterized using various techniques. Catalytic recycling of Au-DENs using a dialysis membrane bag in the reduction of 4-NP is presented. The reduction process was primarily monitored by UV-vis spectroscopy at around λ 400 nm. The catalyst was found to exhibit a very good activity and stability even after more than 3 catalytic reaction cycles without any leaching, confirming that the reduction of 4-NP is purely a heterogeneous reaction.

AB - Generation 4 PAMAM-NH2 dendrimers were used as template to synthesize Au13- and Au100-dendrimer-encapsulated nanoparticles (Au-DENs) with an average diameter of 2.1 ± 0.3 and 3.1 ± 0.5 nm respectively. Au-DENs were characterized using various techniques. Catalytic recycling of Au-DENs using a dialysis membrane bag in the reduction of 4-NP is presented. The reduction process was primarily monitored by UV-vis spectroscopy at around λ 400 nm. The catalyst was found to exhibit a very good activity and stability even after more than 3 catalytic reaction cycles without any leaching, confirming that the reduction of 4-NP is purely a heterogeneous reaction.

KW - Dendrimer

KW - Gold

KW - Heterogeneous catalysis

KW - Nitrophenol reduction

UR - http://www.scopus.com/inward/record.url?scp=84969821615&partnerID=8YFLogxK

U2 - 10.1016/j.catcom.2016.05.007

DO - 10.1016/j.catcom.2016.05.007

M3 - Article

AN - SCOPUS:84969821615

SN - 1566-7367

VL - 83

SP - 53

EP - 57

JO - Catalysis Communications

JF - Catalysis Communications

ER -

"Cat in a bag" recycling of dendrimer encapsulated Au nanoparticles by use of dialysis membrane bag in the reduction of 4-nitrophenol: Proof of heterogeneous catalysis

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this