Journal Article

PUBDB-2024-00930

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Protein-Protected Porous Bimetallic AgPt Nanoparticles with pH-Switchable Peroxidase/Catalase-Mimicking Activity

Gharib, M.Extern* ; Kornowski, A.Extern* ; Noei, H.DESY* ; Parak, W. (Corresponding author)Extern* ; Chakraborty, I. (Corresponding author)Extern*

2019
ACS Publications Washington, DC

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Please use a persistent id in citations: doi:10.1021/acsmaterialslett.9b00164

Abstract: Bovine serum albumin (BSA)-protected AgPt bimetallic nanoparticles have been synthesized through a galvanic replacement reaction, using a silver nanoprism as a template. Synthesis was performed without the use of synthetic chemical surfactants, using proteins as a surface coating. Structural and compositional characterizations were performed using several spectroscopic and microscopic techniques. The protein-protected AgPt nanoparticles show effective pH-switchable enzyme mimicking (“nanozyme”) activity similar to catalase and peroxidase. The platinum content in the AgPt nanoparticles is playing an important role in determining the enzymatic catalysis rate of the nanoparticles. Because of their porous structure, molecular payloads such as calcein also can be incorporated into the AgPt nanoparticles, which can be released on demand by chemical triggers, such as hydrogen peroxide.

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Contributing Institute(s):

1. Nanolab (FS-NL)
2. Universität Hamburg (UHH)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. DFG project G:(GEPRIS)320907882 - Der Übergang zwischen Plasmonresonanz und Photolumineszenz ist in Münzmetall- (und deren Legierungen) Nanoclustern durch Oberflächenladung, Clusterzusammensetzung und Typ der Oberflächenliganden bestimmt (320907882) (320907882)

Experiment(s):

1. DESY NanoLab: Surface Spectroscopy

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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