High sensitive and low concentration detection of methanol by a gas sensor based on one-step synthesis α-Fe2O3 hollow spheres

2016 ◽  
Vol 169 ◽  
pp. 73-76 ◽  
Author(s):  
H.M. Yang ◽  
S.Y. Ma ◽  
G.J. Yang ◽  
W.X. Jin ◽  
T.T. Wang ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Hollow Spheres ◽  
Low Concentration ◽  
One Step

Preparation of hollow Fe3O4 spheres through a facile method and their applications

2017 ◽  
Vol 10 (06) ◽  
pp. 1750075 ◽  
Author(s):  
Xingping Wu ◽  
Aiping Zhu ◽  
Zhaodong Nan
Keyword(s):  
Saturation Magnetization ◽  
Ostwald Ripening ◽  
Solvothermal Method ◽  
Hollow Spheres ◽  
Hollow Structure ◽  
Solid Sphere ◽  
Small Particles ◽  
Potential Applications ◽  
One Step ◽  
Solid Spheres

Fe3O4 hollow microspheres with good dispersibility and high saturation magnetization were synthesized through a facile one-step solvothermal method. The formation mechanism of the hollow structure was studied by taking time-dependent experiments. Porous [Formula: see text]-FeOOH and [Formula: see text]-Fe2O3 nanosheets were firstly fabricated. Fe3O4 solid spheres aggregated by small particles were obtained from the transition of [Formula: see text]-FeOOH and [Formula: see text]-Fe2O3. Finally, the solid sphere is transferred to hollow sphere through Ostwald ripening. The maximum saturation magnetization of the hollow spheres is [Formula: see text][Formula: see text]emu/g, which is higher than some results reported in references. The Fe3O4 hollow spheres show potential applications in microwave absorption and photocatalysis.

Low-Concentration NO2 Gas Sensor Based on HfO2 Thin Films Irradiated by Ultraviolet Light

2016 ◽  
Vol 45 (8) ◽  
pp. 3914-3920 ◽  
Author(s):  
Irmak Karaduman ◽  
Özlem Barin ◽  
Metin Özer ◽  
Selim Acar
Keyword(s):  
Thin Films ◽  
Gas Sensor ◽  
Ultraviolet Light ◽  
Low Concentration ◽  
No2 Gas Sensor

Facile One-Step Synthesis of Mesoporous Tin Oxide Hollow Spheres and Their Functionalized Nanoreactor Variants

2016 ◽  
Vol 33 (8) ◽  
pp. 519-523 ◽  
Author(s):  
Zheye Zhang ◽  
Lu Wang ◽  
Yunxia Jin ◽  
Fei Xiao ◽  
Shuai Wang
Keyword(s):  
Tin Oxide ◽  
Hollow Spheres ◽  
One Step ◽  
Mesoporous Tin Oxide

Hierarchical flower-like Bi2WO6 hollow microspheres: facile synthesis and excellent catalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 23080-23085 ◽  
Author(s):  
Peigen Zhang ◽  
Jian Zhang ◽  
Anjian Xie ◽  
Shikuo Li ◽  
Jiming Song ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Catalytic Performance ◽  
Hollow Microspheres ◽  
Solvothermal Process ◽  
Facile Synthesis ◽  
Step Method ◽  
Bismuth Tungstate ◽  
One Step ◽  
Excellent Catalytic Performance

A one step method has been developed for the fabrication of hierarchical flower-like bismuth tungstate (Bi2WO6) hollow spheres via a solvothermal process.

PBG Fiber Low Concentration Gas Sensor

2008 ◽  
pp. 163-168
Author(s):  
Joanna Pawłat ◽  
Xue Feng Li ◽  
Takahiro Matsuo ◽  
Tadashi Sugiyama ◽  
Toshitsugu Ueda
Keyword(s):  
Gas Sensor ◽  
Low Concentration

scholarly journals Facile fabrication of porous BiVO4 hollow spheres with improved visible-light photocatalytic properties

RSC Advances ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 6395-6404 ◽  
Author(s):  
Jun Mao ◽  
Qian Wu ◽  
Feifei Tao ◽  
Wen Xu ◽  
Tianjie Hong ◽  
...  
Keyword(s):  
Visible Light ◽  
Porous Structure ◽  
Solution Method ◽  
Hollow Spheres ◽  
Bismuth Vanadate ◽  
Photocatalytic Properties ◽  
One Step ◽  
Facile Fabrication ◽  
Visible Light Photocatalytic

Bismuth vanadate (BiVO4) hollow spheres with porous structure have been successfully fabricated by a one-step wet solution method with no surfactant and template.

Room-Temperature Hydrogen-Gas Sensor Based on Carbon Nanotube Yarn

2020 ◽  
Vol 20 (7) ◽  
pp. 4011-4014 ◽  
Author(s):  
Maeum Han ◽  
Jae Keon Kim ◽  
Junyeop Lee ◽  
Hee Kyung An ◽  
Jong Pil Yun ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Gas Sensor ◽  
Room Temperature ◽  
Hydrogen Gas ◽  
Step Procedure ◽  
One Step ◽  
Cnt Arrays ◽  
Removal Of Impurities ◽  
Yarn Surface ◽  
Higher Sensitivity

The proposed study describes the development of a carbon nanotube (CNT)-based gas sensor capable of detecting the presence of hydrogen (H2) gas at room temperature. CNT yarn used in the proposed sensor was fabricated from synthesized CNT arrays. Subsequently, the yarn was treated by means of a simple one-step procedure, called acid treatment, to facilitate removal of impurities from the yarn surface and forming functional species. To verify the proposed sensor’s effectiveness with regard to detection of H2 gas at room temperature, acid-treated CNT and pure yarns were fabricated and tested under identical conditions. Corresponding results demonstrate that compared to the untreated CNT yarn, the acid-treated CNT yarn exhibits higher sensitivity to the presence of H2 gas at room temperature. Additionally, the acid-treated CNT yarn was observed to demonstrate excellent selectivity pertaining to H2 gas.

Ethanol gas sensor based on a self-supporting hierarchical SnO2 nanorods array

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1800-1804 ◽  
Author(s):  
Qian Liu ◽  
Zhenyu Zhang ◽  
Wenyao Li ◽  
Kaibing Xu ◽  
Rujia Zou ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Response ◽  
Sno2 Nanorods ◽  
Solvothermal Route ◽  
Nanorods Array ◽  
One Step

3D hierarchical SnO2 nanorods array on homogeneous substrate was prepared by a one-step solvothermal route, which exhibited a high response to ethanol gas.

scholarly journals Hydrothermal synthesis of p-type nanocrystalline NiO nanoplates for high response and low concentration hydrogen gas sensor application

2018 ◽  
Vol 44 (13) ◽  
pp. 15721-15729 ◽  
Author(s):  
Umesh T. Nakate ◽  
Gun Hee Lee ◽  
Rafiq Ahmad ◽  
Pramila Patil ◽  
Dhanaji P. Bhopate ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Gas Sensor ◽  
Hydrogen Gas ◽  
High Response ◽  
Low Concentration ◽  
Sensor Application ◽  
P Type
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