scholarly journals Designing SnO2 Nanostructure-Based Sensors with Tailored Selectivity toward Propanol and Ethanol Vapors

ACS Omega ◽  
2019 ◽  
Vol 4 (9) ◽  
pp. 13696-13709 ◽  
Author(s):  
Rapelang G. Motsoeneng ◽  
Ioannis Kortidis ◽  
Suprakas Sinha Ray ◽  
David E. Motaung
Keyword(s):  
Sno2 Nanostructure

Hierarchical SnO2 Nanostructure with High Energy {113} Facet as Pt-Support for Improved Oxygen Reduction Reaction

2017 ◽  
Vol 17 (5) ◽  
pp. 2929-2936 ◽  
Author(s):  
Maidhily Manikandan ◽  
Gubbala V Ramesh ◽  
Toyokazu Tanabe ◽  
Arivuoli Dakshnamoorthy ◽  
Katsuhiko Ariga ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Energy ◽  
Reduction Reaction ◽  
Sno2 Nanostructure

scholarly journals Incorporating N Atoms into SnO2 Nanostructure as an Approach to Enhance Gas Sensing Property for Acetone

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 445 ◽  
Author(s):  
Xiangfeng Guan ◽  
Yongjing Wang ◽  
Peihui Luo ◽  
Yunlong Yu ◽  
Dagui Chen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Gas Sensor ◽  
Photoelectron Spectroscopy ◽  
High Performance ◽  
Gas Sensing ◽  
Diffuse Reflectance Spectroscopy ◽  
Limit Of Detection ◽  
Low Cost ◽  
X Ray ◽  
Sno2 Nanostructure

The development of high-performance acetone gas sensor is of great significance for environmental protection and personal safety. SnO2 has been intensively applied in chemical sensing areas, because of its low cost, high mobility of electrons, and good chemical stability. Herein, we incorporated nitrogen atoms into the SnO2 nanostructure by simple solvothermal and subsequent calcination to improve gas sensing property for acetone. The crystallization, morphology, element composition, and microstructure of as-prepared products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Electron paramagnetic resonance (EPR), Raman spectroscopy, UV–visible diffuse reflectance spectroscopy (UV–vis DRS), and the Brunauer–Emmett–Teller (BET) method. It has been found that N-incorporating resulted in decreased crystallite size, reduced band-gap width, increased surface oxygen vacancies, enlarged surface area, and narrowed pore size distribution. When evaluated as gas sensor, nitrogen-incorporated SnO2 nanostructure exhibited excellent sensitivity for acetone gas at the optimal operating temperature of 300 °C with high sensor response (Rair/Rgas − 1 = 357) and low limit of detection (7 ppb). The nitrogen-incorporated SnO2 gas sensor shows a good selectivity to acetone in the interfering gases of benzene, toluene, ethylbenzene, hydrogen, and methane. Furthermore, the possible gas-sensing mechanism of N-incorporated SnO2 toward acetone has been carefully discussed.

Photoluminescence and Structural Characteristics of SnO2 Nanopetals Synthesized by Thermal Evaporation

2010 ◽  
Vol 152-153 ◽  
pp. 697-701
Author(s):  
Bing Wang ◽  
Ling Li
Keyword(s):  
Room Temperature ◽  
Thermal Evaporation ◽  
Structural Characteristics ◽  
The Self ◽  
Silicon Substrates ◽  
Photoluminescence Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Room Temperature Photoluminescence ◽  
Sno2 Nanostructure

A new nanostructure, (2D) nanopetal of SnO2, has been grown on single silicon substrates by Au-Ag alloying catalyst assisted carbothermal evaporation of SnO2. Field emission scanning electron microscopy (FESEM), x-ray diffraction (XRD) and Raman are employed to identify the morphology and structure of the synthesized productions. Room-temperature photoluminescence (PL) is used to characterize the luminescence of SnO2 nanostructure. Three new peaks at 356, 450 and 489 nm in the measured photoluminescence spectra are observed, implying that more luminescence centers exist in SnO2 nanopetals due to nanocrystals and defects. The growth of the SnO2 nanopetals is discussed on the basis of the self-catalyst mechanism.

Novel route to dendritic SnO2 nanostructure via ethanol-assisted controlled borohydride reduction

2006 ◽  
Vol 60 (21-22) ◽  
pp. 2600-2603 ◽  
Author(s):  
Jisen Wang ◽  
Jinquan Sun ◽  
Guosong Zhang ◽  
Xiucun Wu ◽  
Ying Bao ◽  
...  
Keyword(s):  
Borohydride Reduction ◽  
Sno2 Nanostructure

Ammonia gas sensor based on SnO2 nanostructure with the enhanced sensing capability at low temperatures

2019 ◽  
Vol 92 (10) ◽  
pp. 939-947 ◽  
Author(s):  
Gyanendra Prakash Shukla ◽  
C. K. Pandey ◽  
Manisha Bajpai ◽  
Mukesh Chandra Bhatnagar ◽  
Ravindra Dhar
Keyword(s):  
Gas Sensor ◽  
Low Temperatures ◽  
Ammonia Gas ◽  
Sno2 Nanostructure
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