Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Importance of the surface chemistry of nanoparticles on peroxidase-like activity
KTH, School of Engineering Sciences (SCI), Applied Physics, Functional Materials, FNM.
KTH, School of Engineering Sciences (SCI), Applied Physics, Functional Materials, FNM.
Show others and affiliations
2017 (English)In: Biochemical and Biophysical Research Communications - BBRC, ISSN 0006-291X, E-ISSN 1090-2104, Vol. 491, no 1, p. 15-18Article in journal (Refereed) Published
Abstract [en]

We report the studies on origin of peroxidase-like activity for gold nanoparticles, as well as the impact from morphology and surface charge of nanoparticles. For this purpose, we have synthesized hollow gold nanospheres (HAuNS) and gold nanorods (AuNR) with different morphology and surface chemistry to investigate their influence on the catalytic activity. We found that citrate-capped HAuNS show catalyzing efficiency in oxidation reaction of 3,3′,5,5′-tetramethylbenzidine (TMB) by hydrogen peroxide (H2O2) and it is superior to that of cetyltrimethylammonium bromide (CTAB)-capped AuNR. The kinetics of catalytic activities from HAuNS and AuNR were respectively studied under varied temperatures. The results indicated that surface chemistry rather than morphology of nanoparticles plays an important role in the catalytic reaction of substrate. Furthermore, influencing factors such as pH, amount of nanoparticle and H2O2 concentration were also investigated on HAuNS-catalyzed system. The great impact of nanoparticle surface properties on catalytic reactions makes a paradigm in constructing nanozymes as peroxidase mimic for sensing application.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 491, no 1, p. 15-18
Keywords [en]
Enzyme mimic, Gold nanorods, Hollow gold nanospheres, Peroxidase activity, Surface chemistry
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-212231DOI: 10.1016/j.bbrc.2017.07.014ISI: 000408518700003Scopus ID: 2-s2.0-85023636388OAI: oai:DiVA.org:kth-212231DiVA, id: diva2:1134639
Funder
Swedish Cancer Society, CAN 2014/759
Note

QC 20170821

Available from: 2017-08-21 Created: 2017-08-21 Last updated: 2017-09-27Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Asem, HebaAshour, RadwaMuhammed, Mamoun
By organisation
Functional Materials, FNM
In the same journal
Biochemical and Biophysical Research Communications - BBRC
Materials Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 27 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf