Template-free preparation of mesoporous single crystal In2O3 achieving superior ethanol gas sensing performance

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14615-14619 ◽  
Author(s):  
Jijiang Liu ◽  
Gang Chen ◽  
Yaoguang Yu ◽  
Yalin Wu ◽  
Mingjun Zhou ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Specific Surface ◽  
Single Crystal ◽  
Surface Area ◽  
Gas Sensing ◽  
Vacancy Concentration ◽  
High Specific Surface Area ◽  
Oxygen Vacancy Concentration ◽  
Template Free ◽  
Sensing Performance

Mesoporous single crystal In2O3 with high specific surface area and oxygen vacancy concentration are prepared for enhanced ethanol gas sensing performance.

scholarly journals Surface Structure Engineering of Nanosheet-Assembled NiFe2O4 Fluffy Flowers for Gas Sensing

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 297
Author(s):  
Xiaofeng Wang ◽  
Xu Li ◽  
Guozheng Zhang ◽  
Zihao Wang ◽  
Xue-Zhi Song ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
Photoelectron Spectroscopy ◽  
Gas Sensing ◽  
Nitrogen Adsorption ◽  
X Ray ◽  
Adsorption Desorption ◽  
Sensing Performance

In this work, we present a strategy to improve the gas-sensing performance of NiFe2O4 via a controllable annealing Ni/Fe precursor to fluffy NiFe2O4 nanosheet flowers. X-ray diffraction (XRD), a scanning electron microscope (SEM), nitrogen adsorption–desorption measurements and X-ray photoelectron spectroscopy (XPS) were used to characterize the crystal structure, morphology, specific surface area and surface structure. The gas-sensing performance was tested and the results demonstrate that the response was strongly influenced by the specific surface area and surface structure. The resultant NiFe2O4 nanosheet flowers with a heating rate of 8 °C min−1, which have a fluffier morphology and more oxygen vacancies in the surface, exhibited enhanced response and shortened response time toward ethanol. The easy approach facilitates the mass production of gas sensors based on bimetallic ferrites with high sensing performance via controlling the morphology and surface structure.

scholarly journals C2H5OH and NO2 sensing properties of ZnO nanostructures: correlation between crystal size, defect level and sensing performance

RSC Advances ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 5629-5639 ◽  
Author(s):  
Chu Thi Quy ◽  
Nguyen Xuan Thai ◽  
Nguyen Duc Hoa ◽  
Dang Thi Thanh Le ◽  
Chu Manh Hung ◽  
...  
Keyword(s):  
Nitrogen Dioxide ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Crystal Size ◽  
Gas Sensing ◽  
Zno Nanostructures ◽  
Defect Level ◽  
Sensing Applications ◽  
Sensing Performance

ZnO nanostructures were synthesized for ethanol and nitrogen dioxide gas-sensing applications. Results pointed out that the defect levels dominating the gas-sensing performance but not the morphology, specific surface area or crystal size.

scholarly journals Precursor-controlled and template-free synthesis of nitrogen-doped carbon nanoparticles for supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 50063-50069 ◽  
Author(s):  
Li-Ping Lv ◽  
Zhong-Shuai Wu ◽  
Long Chen ◽  
Hao Lu ◽  
Yi-Ran Zheng ◽  
...  
Keyword(s):  
Specific Surface ◽  
Specific Capacitance ◽  
Surface Area ◽  
Specific Surface Area ◽  
Carbon Nanoparticles ◽  
High Specific Surface Area ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Template Free ◽  
Nitrogen Doped Carbon

We describe the synthesis of hierarchical porous nitrogen-doped carbon nanoparticles with high specific surface area and specific capacitance for supercapacitors.

P–p heterojunction CuO/CuCo2O4 nanotubes synthesized via electrospinning technology for detecting n-propanol gas at room temperature

2017 ◽  
Vol 4 (7) ◽  
pp. 1219-1230 ◽  
Author(s):  
Khaled Tawfik Alali ◽  
Zetong Lu ◽  
Hongsen Zhang ◽  
Jingyuan Liu ◽  
Qi Liu ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Room Temperature ◽  
Gas Sensing ◽  
Tubular Structure ◽  
Large Specific Surface Area ◽  
Sensing Performance

Composite CuO/CuCo2O4 nanotubes were synthesized by electrospinning technology. The large specific surface area, complex tubular structure, and p–p heterojunction are the potential reasons for the excellent room temperature gas sensing performance toward n-propanol vapor.

Template-free synthesis of high-yield phosphonated tin oxides with high specific surface area

2019 ◽  
Vol 236 ◽  
pp. 85-88 ◽  
Author(s):  
Bing Guo ◽  
Xiuzhen Lin ◽  
Peng Liu ◽  
Yanyan Zeng ◽  
Hongbo Fan
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
High Yield ◽  
Tin Oxides ◽  
Template Free

scholarly journals An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO2 powders and their adsorption for acid orange 7

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22366-22375 ◽  
Author(s):  
Yaohui Xu ◽  
Ruixing Li ◽  
Yang Zhou
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Surface Areas ◽  
Template Free ◽  
Specific Surface Areas ◽  
Mesoporous Ceo2

An eco-friendly route for template-free synthesis of mesoporous CeO2 powders with high specific surface areas.

Leakage Current and Polarization Properties of (Bi0.5Na0.5)TiO3-BaTiO3 Single Crystals

2013 ◽  
Vol 582 ◽  
pp. 96-99 ◽  
Author(s):  
Kiyotaka Hirano ◽  
Hiroaki Onozuka ◽  
Yuuki Kitanaka ◽  
Yuji Noguchi ◽  
Masaru Miyayama
Keyword(s):  
Oxygen Vacancy ◽  
Single Crystal ◽  
Single Crystals ◽  
Leakage Current ◽  
Remanent Polarization ◽  
Vacancy Concentration ◽  
Oxygen Vacancy Concentration ◽  
Low Oxygen ◽  
High Oxygen Pressure ◽  
Top Seeded Solution Growth

Single crystal of ferroelectric (Bi,Na)TiO3BaTiO3(BNTBT) with tetragonalP4mmstructure grown by a top-seeded solution growth (TSSG) method at a high oxygen pressure (PO2) of 0.9 MPa and their properties were compared with those of the crystals grown at aPO2of 0.1 MPa. The crystals obtained atPO2= 0.9 MPa exhibited a remanent polarization (Pr) of 54μC/cm2, which was much larger than those of the crystals grown atPO2= 0.1 MPa (20μC/cm2). It is suggested that the largePris attributed to a low oxygen vacancy concentration.

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