FePt nanoparticles-decorated graphene oxide nanosheets as enhanced peroxidase mimics for sensitive response to H2 O2

Materials Science & Engineering. C, Materials for Biological Applications
Miaomiao ChenQingyun Liu

Abstract

Bimetallic-based nanoparticles usually display improved catalytic performance compared to monometallic counterparts. Herein, the well-dispersed FePt nanoparticles decorated on the surface of graphene oxide (GO) nanosheets have been successfully synthesized by a simple polyol protocol method. The FePt/GO nanocomposites were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectrometer (EDS), magnetic property measurement system (MPMS), and Fourier transform infrared spectra (FT-IR), respectively. Interestingly, FePt/GO nanocomposites demonstrated the highly intrinsic peroxidase-like activity and can rapidly catalyze to oxidize the substrate 3,3',5,5'-tetramethylbenzidine (TMB) into a blue product oxidized TMB (oxTMB), in the presence of H2O2 only in 30 s observed by the naked eye. Electron spin resonance (ESR) revealed that the underlying catalytic mechanism of FePt/GO nanocomposites was attributed to the generation of hydroxyl radicals (OH) from decomposing of H2O2, due to the synergistic effect between FePt nanoparticles and GO nanosheets. Moreover, H2O2 can be detected over a wide linear detection range of 0.03-0.5 mM with a detection limit of 2.2 × 10-5 M. Based on th...Continue Reading

Citations

Oct 23, 2019·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Lianjing ZhaoGeyu Lu
Oct 21, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Bin LiuGang Wei
Mar 3, 2021·Food Research International·Yongpeng GuoCheng Ji
Sep 9, 2021·Advanced Healthcare Materials·Miaomiao ChenFengling Song
Dec 25, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Zunfu HuXiuwen Zheng
Dec 28, 2021·Critical Reviews in Food Science and Nutrition·Vishal KumarMyunghee Kim

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.