Bio-green synthesis of Ni-doped tin oxide nanoparticles and its influence on gas sensing properties

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 72849-72856 ◽  
Author(s):  
Ketan P. Gattu ◽  
Kalyani Ghule ◽  
Anil A. Kashale ◽  
V. B. Patil ◽  
D. M. Phase ◽  
...  

Using a novel, cost-effective and environmentally friendly biosynthesis method, Ni-doped SnO2 nanoparticles have been synthesized. Gas sensing results suggest that the Ni-dopant is a promising additive to fabricate low cost SnO2 based sensors.

2009 ◽  
Vol 1 (1) ◽  
pp. 168-171 ◽  
Author(s):  
R. Leghrib ◽  
E. Llobet ◽  
R. Pavelko ◽  
A.A. Vasiliev ◽  
A. Felten ◽  
...  

2016 ◽  
Vol 32 (6) ◽  
pp. 2909-2913 ◽  
Author(s):  
Alexey Efimov ◽  
Ivan Volkov ◽  
Andrey Varfolomeev ◽  
Alexey Vasiliev ◽  
Victor Ivanov

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yemane Tadesse Gebreslassie ◽  
Henok Gidey Gebretnsae

AbstractNanotechnology has become the most promising area of research with its momentous application in all fields of science. In recent years, tin oxide has received tremendous attention due to its fascinating properties, which have been improved with the synthesis of this material in the nanometer range. Numerous physical and chemical methods are being used these days to produce tin oxide nanoparticles. However, these methods are expensive, require high energy, and also utilize various toxic chemicals during the synthesis. The increased concerns related to human health and environmental impact have led to the development of a cost-effective and environmentally benign process for its production. Recently, tin oxide nanoparticles have been successfully synthesized by green methods using different biological entities such as plant extract, bacteria, and natural biomolecules. However, industrial-scale production using green synthesis approaches remains a challenge due to the complexity of the biological substrates that poses a difficulty to the elucidations of the reactions and mechanism of formations that occur during the synthesis. Hence, the present review summarizes the different sources of biological entities and methodologies used for the green synthesis of tin oxide nanoparticles and the impact on their properties. This work also describes the advances in the understanding of the mechanism of formation reported in the literature and the different analytical techniques used for characterizing these nanoparticles.


2017 ◽  
Vol 46 (6) ◽  
pp. 3748-3756 ◽  
Author(s):  
Kyungju Nam ◽  
Hyeong-Gwan Kim ◽  
Hyelim Choi ◽  
Hyeji Park ◽  
Jin Soo Kang ◽  
...  

Author(s):  
Ganhua Lu ◽  
Liying Zhu ◽  
Stephen Hebert ◽  
Edward Jen ◽  
Leonidas Ocola ◽  
...  

Rutile tin oxide (SnO2) is a wide band gap (3.6 eV at 300K [1]) n-type semiconductor material. It is widely used as sensing elements in gas sensors [2]. The sensing mechanism is generally attributed to the significant change in the electrical resistance of the material associated with the adsorption/desorption of oxygen on the semiconductor surface [3]. The formation of oxygen adsorbates (O2− or O−) results in an electron-depletion surface layer due to the electron transfer from the oxide surface to oxygen [4]. Recent studies [5, 6] have shown that use of tin oxide nanocrystals significantly improves the dynamic response and the sensitivity of sensors since the electron depletion may occur in the whole crystallite. Here we report on the fabrication and characterization of a miniaturized gas sensor based on tin oxide nanocrystals. A simple, convenient and low-cost mini-arc plasma source is used to synthesize high-quality tin oxide nanoparticles in aerosol phase at atmospheric pressure. The nanoparticle sensor is then fabricated by electrostatic assembly of product tin oxide nanoparticles onto e-beam lithographically patterned interdigitated electrodes. The microfabricated nanoparticle sensor exhibits good sensitivity and dynamic response to low-concentration ethanol vapor and hydrogen gas diluted in air.


2012 ◽  
Vol 22 (22) ◽  
pp. 11009 ◽  
Author(s):  
Shun Mao ◽  
Shumao Cui ◽  
Ganhua Lu ◽  
Kehan Yu ◽  
Zhenhai Wen ◽  
...  

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