Journal ArticleDOI
Controlled synthesis and gas sensing properties of porous Fe2O3/NiO hierarchical nanostructures
TLDR
In this article, cuboid-like and flower-like Fe2O3/NiO hierarchical nanostructures were synthesized by directly annealing the coordination polymer (CP) precursor Fe(3-Clpy)2[Ni(CN)4).Abstract:
Porous Fe2O3/NiO hierarchical nanostructures with cuboid-like and flower-like architectures are prepared by directly annealing the coordination polymer (CP) precursor Fe(3-Clpy)2[Ni(CN)4]. Both of the hierarchical architectures are constructed by porous sheet-like building blocks, which are further composed of nanocrystals with a size smaller than 6 nm. Fe2O3 and NiO components display highly uniform distribution in the composites. An interesting monocrystal-like electron diffraction pattern is demonstrated in the cuboid-like Fe2O3/NiO composite. It is revealed that the crystal structure of the CP precursor can exert an obvious effect on the morphology and microstructure of the calcined products. The potential application of the Fe2O3/NiO composites in gas sensors is investigated towards various organic vapors. It is found that the cuboid-like Fe2O3/NiO shows a much higher gas sensing performance than the flower-like counterpart, demonstrating that the different architectures of hierarchical nanostructures have an important influence on the gas sensing performance. The facile and effective CP precursor approach presented here can be extended to synthesize a wide range of metal oxide composites with unique architectures, highly tailored compositions and improved functions.read more
Citations
More filters
Journal ArticleDOI
2D metal oxide nanoflakes for sensing applications : Review and perspective
TL;DR: In this article, the state of the art and future prospects of 2D metal oxide nanoflakes used as active sensing elements for the detection of solutes, gases and radiation are discussed.
Journal ArticleDOI
Comparison of NiS2 and α-NiS hollow spheres for supercapacitors, non-enzymatic glucose sensors and water treatment.
TL;DR: Compared with other normally co-existing interfering species, such as ascorbic acid, uric acid and dopamine, the electrode modified with α-NiS hollow spheres shows good selectivity.
Journal ArticleDOI
Improving the triethylamine sensing performance based on debye length: A case study on α-Fe2O3@NiO(CuO) core-shell nanorods sensor working at near room-temperature
TL;DR: In this article, a core-shell nanorods (NRs) heterostructures were fabricated and their sensing performance was optimized by controlling the shell thickness based on Debye length.
Journal ArticleDOI
Fabrication of stable NiO/Fe2O3 heterostructure: A versatile hybrid material for electrochemical sensing of glucose, methanol and enhanced photodecomposition and/photoreduction of water contaminants
TL;DR: In this article, the p-NiO/n-α-Fe2O3 hetrostructures have been synthesized following three sequential steps, electrochemically NiO thin films were synthesized on FTO substrate, FeS2 thin films are then electrodeposited onto NiO surface (FTO/NiO /FeS2), a completely different heterostructure.
Journal ArticleDOI
Synergetically Selective Toluene Sensing in Hematite-Decorated Nickel Oxide Nanocorals
Jun Min Suh,Young Seok Shim,Do Hong Kim,Do Hong Kim,Woonbae Sohn,Youngmo Jung,Seon Yong Lee,Seokhoon Choi,Yeon Hoo Kim,Jong Myeong Jeon,Kootak Hong,Ki Chang Kwon,Seo Yun Park,Chulki Kim,Jong Heun Lee,Chong Yun Kang,Chong Yun Kang,Ho Won Jang +17 more
TL;DR: In this paper, a facile method for α-Fe2O3 decoration of the whole surface of vertical NiO nanorods was proposed, which achieved a 45.4 times higher response to 50 ppm toluene (C7H8) at 350 °C.
References
More filters
Journal ArticleDOI
Highly sensitive and selective gas sensors using p-type oxide semiconductors: Overview
Hyo Joong Kim,Jong Heun Lee +1 more
TL;DR: In this article, high performance gas sensors prepared using p-type oxide semiconductors such as NiO, CuO, Cr2O3, Co3O4, and Mn3O3 were reviewed.
Journal ArticleDOI
Formation of Fe2O3 Microboxes with Hierarchical Shell Structures from Metal–Organic Frameworks and Their Lithium Storage Properties
TL;DR: Fe(2)O(3) microboxes with hierarchically structured shells have been synthesized simply by annealing Prussian blue microcubes and demonstrated a scalable synthesis of anisotropic hollow structures with various shell architectures.
Journal ArticleDOI
Quasi-one dimensional metal oxide semiconductors: Preparation, characterization and application as chemical sensors
Elisabetta Comini,Camilla Baratto,Guido Faglia,Matteo Ferroni,Alberto Vomiero,Giorgio Sberveglieri +5 more
TL;DR: In this article, the authors present an up-to-date review of metal oxide materials research for gas sensors application, due to the great research effort in the field it could not cover all the interesting works reported, the ones that, according to the authors, are going to contribute to this field's further development were selected and described.
Related Papers (5)
Highly sensitive and selective gas sensors using p-type oxide semiconductors: Overview
Hyo Joong Kim,Jong Heun Lee +1 more
Hydrothermal synthesis of flake-flower NiO architectures: Structure, growth and gas-sensing properties
Ruiyang Miao,Wen Zeng +1 more