Self-supported Co3O4 nanoneedle arrays decorated with PPy via chemical vapor phase polymerization for high-performance detection of trace Pb2+

2017 ◽  
Vol 9 (12) ◽  
pp. 1905-1911 ◽  
Author(s):  
Wenjing Wang ◽  
Chao Wang ◽  
Peng Dou ◽  
Lifang Zhang ◽  
Jiao Zheng ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Vapor Phase ◽  
High Performance ◽  
Electrochemical Sensors ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Lead Ions ◽  
Vapor Phase Polymerization

Highly ordered three-dimensional (3D) polypyrrole (PPy) coated cobalt oxide (Co3O4) nanoneedle arrays (NAs) anchored on Cu foams (Co3O4 NAs@PPy) are fabricated for electrochemical sensors to detect trace lead ions (Pb2+).

scholarly journals Correction: Self-supported Co3O4 nanoneedle arrays decorated with PPy via chemical vapor phase polymerization for high-performance detection of trace Pb2+

2017 ◽  
Vol 9 (16) ◽  
pp. 2472-2472 ◽  
Author(s):  
Wenjing Wang ◽  
Chao Wang ◽  
Peng Dou ◽  
Lifang Zhang ◽  
Jiao Zheng ◽  
...  
Keyword(s):  
Vapor Phase ◽  
High Performance ◽  
Chemical Vapor ◽  
Vapor Phase Polymerization

Correction for ‘Self-supported Co3O4 nanoneedle arrays decorated with PPy via chemical vapor phase polymerization for high-performance detection of trace Pb2+’ by Wenjing Wang et al., Anal. Methods, 2017, 9, 1905–1911.

scholarly journals Carbon nanomaterial hybrids via laser writing for high-performance non-enzymatic electrochemical sensors: a critical review

2021 ◽  
Author(s):  
Marcel Simsek ◽  
Nongnoot Wongkaew
Keyword(s):  
Noble Metal ◽  
Critical Review ◽  
High Performance ◽  
Carbon Nanomaterials ◽  
Electrochemical Sensors ◽  
Low Cost ◽  
Three Dimensional ◽  
Laser Writing ◽  
Enzyme Mimicking ◽  
Natural Enzyme

AbstractNon-enzymatic electrochemical sensors possess superior stability and affordability in comparison to natural enzyme-based counterparts. A large variety of nanomaterials have been introduced as enzyme mimicking with appreciable sensitivity and detection limit for various analytes of which glucose and H2O2 have been mostly investigated. The nanomaterials made from noble metal, non-noble metal, and metal composites, as well as carbon and their derivatives in various architectures, have been extensively proposed over the past years. Three-dimensional (3D) transducers especially realized from the hybrids of carbon nanomaterials either with metal-based nanocatalysts or heteroatom dopants are favorable owing to low cost, good electrical conductivity, and stability. In this critical review, we evaluate the current strategies to create such nanomaterials to serve as non-enzymatic transducers. Laser writing has emerged as a powerful tool for the next generation of devices owing to their low cost and resultant remarkable performance that are highly attractive to non-enzymatic transducers. So far, only few works have been reported, but in the coming years, more and more research on this topic is foreseeable. Graphical abstract

scholarly journals Superior Pseudocapacitive Storage of a Novel Ni3Si2/NiOOH/Graphene Nanostructure for an All-Solid-State Supercapacitor

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Jing Ning ◽  
Maoyang Xia ◽  
Dong Wang ◽  
Xin Feng ◽  
Hong Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Large Scale ◽  
Specific Capacity ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Specific Area ◽  
High Energy ◽  
Scale Production ◽  
Free Standing

Abstract Recent developments in the synthesis of graphene-based structures focus on continuous improvement of porous nanostructures, doping of thin films, and mechanisms for the construction of three-dimensional architectures. Herein, we synthesize creeper-like Ni3Si2/NiOOH/graphene nanostructures via low-pressure all-solid melting-reconstruction chemical vapor deposition. In a carbon-rich atmosphere, high-energy atoms bombard the Ni and Si surface, and reduce the free energy in the thermodynamic equilibrium of solid Ni–Si particles, considerably catalyzing the growth of Ni–Si nanocrystals. By controlling the carbon source content, a Ni3Si2 single crystal with high crystallinity and good homogeneity is stably synthesized. Electrochemical measurements indicate that the nanostructures exhibit an ultrahigh specific capacity of 835.3 C g−1 (1193.28 F g−1) at 1 A g−1; when integrated as an all-solid-state supercapacitor, it provides a remarkable energy density as high as 25.9 Wh kg−1 at 750 W kg−1, which can be attributed to the free-standing Ni3Si2/graphene skeleton providing a large specific area and NiOOH inhibits insulation on the electrode surface in an alkaline solution, thereby accelerating the electron exchange rate. The growth of the high-performance composite nanostructure is simple and controllable, enabling the large-scale production and application of microenergy storage devices.

Carbon nanospheres hanging on carbon nanotubes: a hierarchical three-dimensional carbon nanostructure for high-performance supercapacitors

2017 ◽  
Vol 5 (32) ◽  
pp. 16595-16599 ◽  
Author(s):  
Yongsheng Zhou ◽  
Pan Jin ◽  
Yatong Zhou ◽  
Yingchun Zhu
Keyword(s):  
Carbon Nanotubes ◽  
Vapor Deposition ◽  
High Performance ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Single Step ◽  
Chemical Vapor Deposition Method ◽  
Carbon Nanostructure ◽  
Carbon Nanospheres ◽  
Simple Chemical

We describe the single-step synthesis of carbon nanospheres hanging on carbon nanotubes (CNs/CNTs), using a simple chemical vapor deposition method.

Detection of MicroRNA Based on Three-Dimensional Graphene Field-Effect Transistor Biosensor

NANO ◽  
2020 ◽  
Vol 15 (03) ◽  
pp. 2050039
Author(s):  
Ruihong Song ◽  
Meng Tian ◽  
Yingxian Li ◽  
Jianjian Liu ◽  
Guofeng Liu ◽  
...  
Keyword(s):  
Field Effect ◽  
High Performance ◽  
Field Effect Transistor ◽  
Nickel Foam ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Current Response ◽  
Promising Alternative ◽  
Graphene Field Effect Transistor ◽  
Effect Transistor

MicroRNA (miRNAs) are post-transcriptional gene regulators and can be easily detected in plasma, which suggests a promising role as diagnostic markers. In this paper, we reported a nanomaterial of three-dimensional graphene (3D-G) grown on nickel foam by chemical vapor deposition (CVD). As a conductive channel, the 3D-G was made into field-effect transistor (FET) biosensor, showing high-performance in detecting of miRNA. We demonstrated that 3D-G FET biosensor was able to achieve a detection limit as low as 100[Formula: see text]pM and also has a good linear current response to miRNA concentrations in a broad range from 100[Formula: see text]pM to 100[Formula: see text]nM. Overall, the 3D-G FET biosensor was shown as a very promising alternative tool for the detection of miRNAs in biomedical research and early clinical diagnostic studies.

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