Metal-Doped In2O3 Nanosphere Arrays with Enhanced Gas-Sensing Property

NANO ◽  
2019 ◽  
Vol 14 (03) ◽  
pp. 1950040 ◽  
Author(s):  
Xuanji Zhang ◽  
Ni Deng ◽  
Xianjia Chen ◽  
Yanting Yang ◽  
Jing Li ◽  
...  
Keyword(s):  
Metal Ion ◽  
Single Phase ◽  
Gas Sensing ◽  
Three Dimensional ◽  
Photo Luminescence ◽  
Mesoporous Structure ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Metal Doped ◽  
Effective Contribution

In2O3 and metal-doped (Ni or Ce) In2O3 mesoporous three-dimensional (3D) nanospheres arrays were synthesized via nanocasting using mesoporous silica as hard templates. Effects of Ni or Ce doping on the structure, optical and gas-sensing properties of the In2O3 nanospheres were investigated. Both the undoped and the doped In2O3 nanospheres showed single-phase structure without any impurity. The nanospheres were about 20[Formula: see text]nm in size and they stacked closely to form rigid 3D mesoporous structure. A change in the value of optical band gap was observed upon metal doping. The room temperature photo luminescence behavior also showed some differences between pure and doped In2O3. Compared with pure In2O3 nanospheres, the metal-doped In2O3 exhibited superior response, fast recovery and good selectivity to ethanol. The enhanced gas-sensing properties might be related to the doping of metal ion and its effective contribution towards the oxygen vacancies, conductivity and crystallite size of the grains.

Synthesis and QCM gas-sensing properties of 3,4-dialkoxyphenyl tosylamino-substituted phthalocyanines

2020 ◽  
Vol 24 (05n07) ◽  
pp. 830-839 ◽  
Author(s):  
Mika Harbeck ◽  
Zafer Şen ◽  
Dilek D. Erbahar ◽  
Esranur Fidan Çelik ◽  
Gülay Gümüş ◽  
...  
Keyword(s):  
Metal Ion ◽  
Gas Sensing ◽  
Metal Salt ◽  
Chemical Warfare Agent ◽  
Sensing Properties ◽  
Alkyl Chains ◽  
H Nmr ◽  
Gas Sensing Properties ◽  
Ft Ir ◽  
New Compounds

Octa-substituted metallophthalocyanines [M = Ni(II), Zn(II), Co(II), and Cu(II)] carrying 3,4-dialkoxyphenyl tosylamino groups at the peripheral positions have been synthesized from 1,2-dicyano-4,5-bis[(3,4-dialkoxyphenyl-tosylamino)methyl]benzene in the presence of the corresponding anhydrous metal salt. Next to the metal ion center, the length of the alkyl chains in the dialkoxyphenyl moiety ([Formula: see text], 5, 6, and 12) was varied. In total, sixteen soluble phthalocyanines have been characterized by elemental analysis, FT-IR and [Formula: see text]H-NMR spectroscopy as well as mass spectrometry. Furthermore, the gas sensing properties of these new compounds have been studied using quartz crystal microbalance transducers. The sensing properties are described on the basis of sensor responses to nine different test analytes comprising volatile organic compounds, toxic gases, and chemical warfare agent simulants. The influence of the metal ion center and substituents on sensor selectivity and sensitivity is discussed. The compounds show good performance in the gas-sensing experiments with diverse responses to the analytes. Phthalocyanine species with pronounced selectivity for polar analytes, hydrocarbons or amines have been identified among the set of sensors with the help of multivariate data exploration methods. The results reveal that quite a high diversity in terms of selectivity is introduced through the minute variations to the phthalocyanine structure.

Three-dimensional In2O3–CuO inverse opals: synthesis and improved gas sensing properties towards acetone

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57389-57395 ◽  
Author(s):  
Ruiqing Xing ◽  
Kuang Sheng ◽  
Lin Xu ◽  
Wei Liu ◽  
Jian Song ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Three Dimensional ◽  
Template Method ◽  
Inverse Opal ◽  
Sensing Properties ◽  
Sacrificial Template ◽  
Inverse Opals ◽  
Gas Sensing Properties ◽  
Via Holes

Specific three-dimensional inverse opal (3DIO) In2O3–CuO architecture with additional via-holes was first prepared by a simple sacrificial template method.

Mesoporous-structure enhanced gas-sensing properties of nickel oxides nanowires

2017 ◽  
Vol 89 ◽  
pp. 280-285 ◽  
Author(s):  
Xiaoqing Li ◽  
Danping Li ◽  
Jingcai Xu ◽  
Hongxiao Jin ◽  
Dingfeng Jin ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Mesoporous Structure ◽  
Nickel Oxides ◽  
Sensing Properties ◽  
Gas Sensing Properties

Facile synthesis of three dimensional porous ZnO films with mesoporous walls and gas sensing properties

2016 ◽  
Vol 112 ◽  
pp. 224-228 ◽  
Author(s):  
Ling-min Yu ◽  
Fen Guo ◽  
Zong-yuan Liu ◽  
Sheng Liu ◽  
Bing Yang ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Three Dimensional ◽  
Zno Films ◽  
Facile Synthesis ◽  
Sensing Properties ◽  
Gas Sensing Properties

Hydrothermally synthesized CuO based volatile organic compound gas sensor

RSC Advances ◽  
2014 ◽  
Vol 4 (101) ◽  
pp. 57975-57982 ◽  
Author(s):  
Shufeng Xia ◽  
Huichao Zhu ◽  
Haitao Cai ◽  
Jiaqi Zhang ◽  
Jun Yu ◽  
...  
Keyword(s):  
Organic Compound ◽  
Hydrothermal Method ◽  
Gas Sensor ◽  
Volatile Organic Compound ◽  
Single Phase ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Volatile Organic

In the present work, single-phase CuO particles were synthesized by a hydrothermal method and characterized by SEM, TEM and XRD. The gas sensing properties of the CuO based sensor to some representative flammable VOC gases were investigated.

Synthesis of three-dimensional flower-like hierarchical ZnO nanostructure and its enhanced acetone gas sensing properties

2016 ◽  
Vol 654 ◽  
pp. 371-378 ◽  
Author(s):  
Cheng Peng ◽  
Jiaojiao Guo ◽  
Wenke Yang ◽  
Chunkai Shi ◽  
Mingrui Liu ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Three Dimensional ◽  
Sensing Properties ◽  
Zno Nanostructure ◽  
Gas Sensing Properties

Preparation of One-dimensional Pt/SnO2 Nanofibers and NOx Gas-sensing Properties

2013 ◽  
Vol 28 (6) ◽  
pp. 584-588 ◽  
Author(s):  
Shuang XU ◽  
Ying YANG ◽  
Hong-Yuan WU ◽  
Chao JIANG ◽  
Li-Qiang JING ◽  
...  
Keyword(s):  
Gas Sensing ◽  
One Dimensional ◽  
Sensing Properties ◽  
Gas Sensing Properties
Sign in / Sign up

Export Citation Format

Share Document