scholarly journals Nanoporous Iron Oxide/Carbon Composites through In-Situ Deposition of Prussian Blue Nanoparticles on Graphene Oxide Nanosheets and Subsequent Thermal Treatment for Supercapacitor Applications

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 776 ◽  
Author(s):  
Alowasheeir Azhar ◽  
Yusuke Yamauchi ◽  
Abeer Enaiet Allah ◽  
Zeid A. Alothman ◽  
Ahmad Yacine Badjah ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Iron Oxide ◽  
Thermal Treatment ◽  
Prussian Blue ◽  
High Current Density ◽  
Carbon Composite ◽  
Hybrid Structure ◽  
Carbon Composites ◽  
Prussian Blue Nanoparticles

This work reports the successful preparation of nanoporous iron oxide/carbon composites through the in-situ growth of Prussian blue (PB) nanoparticles on the surface of graphene oxide (GO) nanosheets. The applied thermal treatment allows the conversion of PB nanoparticles into iron oxide (Fe2O3) nanoparticles. The resulting iron oxide/carbon composite exhibits higher specific capacitance at all scan rates than pure GO and Fe2O3 electrodes due to the synergistic contribution of electric double-layer capacitance from GO and pseudocapacitance from Fe2O3. Notably, even at a high current density of 20 A g−1, the iron oxide/carbon composite still shows a high capacitance retention of 51%, indicating that the hybrid structure provides a highly accessible path for diffusion of electrolyte ions.

In situ amplified photothermal immunoassay for neuron-specific enolase with enhanced sensitivity using Prussian blue nanoparticle-loaded liposomes

The Analyst ◽  
2020 ◽  
Vol 145 (12) ◽  
pp. 4164-4172 ◽  
Author(s):  
Li-Juan Zhi ◽  
Ai-Li Sun ◽  
Dianping Tang
Keyword(s):  
Prussian Blue ◽  
Neuron Specific Enolase ◽  
Enhanced Sensitivity ◽  
Prussian Blue Nanoparticles ◽  
Low Sensitivity

Methods based on prussian blue nanoparticles (PBNPs) have been reported for photothermal immunoassays in analytical nanoscience fields but most suffer from low sensitivity and are not beneficial for routine use.

Synthesis and catalytic performance of graphene oxide-Au nanorings composites

2019 ◽  
Vol 12 (03) ◽  
pp. 1950028 ◽  
Author(s):  
Tong Shen ◽  
Zhong Li ◽  
Yue Jiang ◽  
Zai-Gang Luo
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Rate Constant ◽  
Sodium Borohydride ◽  
Catalytic Performance ◽  
Hybrid Structure ◽  
In Situ Synthesis ◽  
Galvanic Replacement ◽  
Hybrid Nanomaterial

A simple and facile method is described for the in situ synthesis of graphene oxide-Ag nanoplates (GO-AgNPs) hybrid structure and then served as sacrificial templates for producing graphene oxide-Au nanorings (GO-AuNRs) by galvanic replacement taken place on the GO surface. The catalytic activity of the resulting hybrid nanomaterial has been investigated for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with sodium borohydride (NaBH4). The results showed that the rate constant of GO-AuNRs nanomaterials was 0.205[Formula: see text]min[Formula: see text] and the samples showed significant enhancement in catalytic activity.

A simple thermometer-based photothermometric assay for alkaline phosphatase activity based on target-induced nanoprobe generation

2020 ◽  
Vol 44 (41) ◽  
pp. 17753-17760
Author(s):  
Honghong Rao ◽  
Huiyi Huang ◽  
Xinyuan Zhang ◽  
Xin Xue ◽  
Mingyue Luo ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Prussian Blue ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Prussian Blue Nanoparticles

Alkaline phosphatase (ALP)-induced in situ generation of Prussian blue nanoparticles for photothermometric ALP detection.

In situ sulfur deposition route to obtain sulfur–carbon composite cathodes for lithium–sulfur batteries

2014 ◽  
Vol 2 (12) ◽  
pp. 4316-4323 ◽  
Author(s):  
W. G. Wang ◽  
X. Wang ◽  
L. Y. Tian ◽  
Y. L. Wang ◽  
S. H. Ye
Keyword(s):  
Reversible Capacity ◽  
Carbon Composite ◽  
Cycle Performance ◽  
Carbon Composites ◽  
Stable Cycle ◽  
Sulfur Deposition ◽  
Composite Cathodes ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Sulfur–carbon composites were prepared by an in situ sulfur deposition route developed for the heterogeneous nucleation of sulfur into nanopores of conductive carbon black (CCB) by fumigation of Na2S4/CCB powder with HCl. The sulfur–carbon composites demonstrate enhanced reversible capacity and stable cycle performance.

Preparation and Electroactivity of Pt Catalysts on Unzipped Multi-Walled Carbon Nanotube and Graphene Oxide

2020 ◽  
Vol 20 (8) ◽  
pp. 4998-5001
Author(s):  
JinWon Lee ◽  
Sungwook Chung ◽  
Seok Kim
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
3D Structure ◽  
Carbon Composite ◽  
Carbon Composites ◽  
High Catalytic Activity ◽  
Carbon Supports ◽  
Multi Walled Carbon Nanotube ◽  
Ft Ir ◽  
Enhanced Surface

We synthesize the Pt-carbon composite which is composed of unzipped multi-walled carbon nanotube (UMWCNT) and graphene oxide (GO). Graphite and multi-walled carbon nanotube (MWCNT) are oxidized by same method that modified Hummer’s method for making GO and UMWCNT. 3D structure could be prepared by polyol process which contains simultaneously reduction GO and UMWCNT. The electrochemical and morphological property of Pt-carbon composites was investigated by Fourier Transform Infrared spectroscopy (FT-IR), Field Emission Scanning Electron Microscopy (FE-SEM), and Cyclic Voltammetry (CV). These results show that Pt-rGO/UMWCNT (8:2) hybrids exhibited high catalytic activity due to the enhanced surface area of carbon supports.

Graphene oxide directed in-situ synthesis of Prussian blue for non-enzymatic sensing of hydrogen peroxide released from macrophages

2017 ◽  
Vol 72 ◽  
pp. 692-700 ◽  
Author(s):  
Weiwei Qiu ◽  
Qionghua Zhu ◽  
Fei Gao ◽  
Feng Gao ◽  
Jiafu Huang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Prussian Blue ◽  
In Situ Synthesis
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