نتایج جستجو برای: gas sensing performance

تعداد نتایج: 1381147  

Journal: :Carbon trends 2021

In this paper the first example of using C-dots (CDs) as sensing nanomaterial for monitoring low concentrations NO2 in ambient air is reported. logic to support a green circular economy, CDs were prepared from natural cost precursor consisting olive solid waste (OSW) by simple pyrolysis process combined with chemical oxidation. Characterization data showed formation spherical dimensions narrow ...

2017
Hongcheng Liu Qu Zhou Qingyan Zhang Changxiang Hong Lingna Xu Lingfeng Jin Weigen Chen

The detection of partial discharge and analysis of the composition and content of sulfur hexafluoride SF₆ gas components are important to evaluate the operating state and insulation level of gas-insulated switchgear (GIS) equipment. This paper reported a novel sensing material made of pure ZnO and NiO-decorated ZnO nanoflowers which were synthesized by a facile and environment friendly hydrothe...

Journal: :physical chemistry research 0
mohammad solimannejad arak university saeedeh kamalinahad arak university ehsan shakerzadeh shahid chamran university

adsorption of cyanogen molecule on the surface of pristine and sc-doped b12n12 nanocage is scrutinized using at dft calculations to investigating its potential as chemical nanosensors. the results show that cyanogen is weakly adsorbed on the pristine b12n12 and consequently its electrical properties are changed insignificantly. in order to improve the properties of the nanocage sensor, sc dopin...

2016
Yuan Wang Lixin Liu Chuanmin Meng Yun Zhou Zhao Gao Xuhai Li Xiuxia Cao Liang Xu Wenjun Zhu

Much greater surface-to-volume ratio of hierarchical nanostructures renders them attract considerable interest as prototypical gas sensors. In this work, a novel resistive gas sensor based on TiO2/Ag0.35V2O5 branched nanoheterostructures is fabricated by a facile one-step synthetic process and the ethanol sensing performance of this device is characterized systematically, which shows faster res...

2014
Jürgen Smoliner Anton Köck Stephan Steinhauer

Highly sensitive gas detecting devices are of significant importance in various applications such as environmental air quality monitoring or occupational safety and health. In the last decades considerable advances have been made in the development of conductometric metal oxide gas sensors and in optimization of sensor performance regarding sensitivity and selectivity. Traditional metal oxide b...

2015
Christos Sapsanis Hesham Omran Valeriya Chernikova Osama Shekhah Youssef Belmabkhout Ulrich Buttner Mohamed Eddaoudi Khaled N. Salama

A prototypical metal-organic framework (MOF), a 2D periodic porous structure based on the assembly of copper ions and benzene dicarboxylate (bdc) ligands (Cu(bdc)·xH2O), was grown successfully as a thin film on interdigitated electrodes (IDEs). IDEs have been used for achieving planar CMOS-compatible low-cost capacitive sensing structures for the detection of humidity and volatile organic compo...

W-doped TiO2 with nanoporous structure was synthesized by a one-step low temperature hydrothermal method using TiOSO4 and (NH4)6H2W12O40•xH2O as titanium and tungsten sources. Structure, morphology, specific surface area and chemical state of samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). W-doped nanoporo...

2015
Jian Wang Pan Yang Xiaowei Wei Zhihua Zhou

Semiconductor NiO two-dimensional grainy films on glass substrates are shown to be an ammonia-sensing devices with excellent comprehensive performance, such as the good stability, short response time, outstanding recovery performance, excellent sensitivity, and selectivity. The morphology and structure analysis of gas sensing materials indicated that the as-fabricated NiO films was uniform and ...

2013
Weigen CHEN Xiaoping SU Lingna XU Shudi PENG

Morphology Control plays an important role in gas sensing properties of metal oxide semiconductor based gas sensors. In this study, various morphologies of SnO2 nanostructures including nanobulks, nanospheres, nanorods, and nanowires were successfully synthesized via a simple hydrothermal method assisted with different surfactants. X-ray powder diffraction and scanning electron microscopy were ...

. Thanasanvorakun Majid Monajjemi Nikom Sangkorntong Pongsri Mangkomtong

Sn02 nanowires with diameters of 30 — 200 nm have been synthesized by using carbothermalprocess via a thick film of tin dioxide and carbon powder precursor. The nanowires werecharacterized by X-ray power diffraction (XRD), scanning electron microscopy (SEM),transmission electron microscopy (TEM) and Selected Area Electron Diffraction (SAED).The gas sensing characteristic of nanowires toward eth...

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