scholarly journals ETHANOL VAPOR SENSING PROPERTIES OF ZnO/CuO NANOCOMPOSITES

2018 ◽  
Vol 54 (1A) ◽  
pp. 120 ◽  
Author(s):  
Do Duc Tho
Keyword(s):  
Ethanol Vapor ◽  
Nanocomposite Materials ◽  
Vapor Concentration ◽  
Optimum Temperature ◽  
Wet Chemical Method ◽  
Sensing Properties ◽  
Si Substrates ◽  
Vapor Sensing ◽  
Wet Chemical ◽  
20 Nm

CuO leaf-like with thickness of 20 nm, and ZnO plates with thickness of 40 nm have been successfully prepared through a wet chemical method. The two materials were mixed with different weight ratios (CuO/ZnO) to produce nanocomposite materials. Ethanol vapor sensing properties of films derived from obtained materials on SiO2/Si substrates attached with Pt interdigitated electrodes were investigated at operating temperatures in the range of 250 C – 400 C and ethanol vapor concentration in the range of 125 - 1500 ppm. The results showed that the composite of 30 wt% CuO/70 wt% ZnO exhibited the highest response to ethanol vapor at an optimum temperature of 375 oC.

scholarly journals Sr- and Ni-doping in ZnO nanorods synthesized by a simple wet chemical method as excellent materials for CO and CO2 gas sensing

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 82733-82742 ◽  
Author(s):  
Parasharam M. Shirage ◽  
Amit Kumar Rana ◽  
Yogendra Kumar ◽  
Somaditya Sen ◽  
S. G. Leonardi ◽  
...  
Keyword(s):  
Chemical Method ◽  
Gas Sensing ◽  
Zno Nanorods ◽  
Wet Chemical Method ◽  
Ni Doping ◽  
Co2 Gas ◽  
Sensing Properties ◽  
Wet Chemical

In this study, the effect of Sr- and Ni-doping on the microstructural, morphological and sensing properties of ZnO nanorods has been investigated.

Investigation of ethanol vapor sensing properties of ZnO flower-like nanostructures

Measurement ◽  
2015 ◽  
Vol 73 ◽  
pp. 588-595 ◽  
Author(s):  
S. Safa ◽  
R. Azimirad ◽  
Kh. Mohammadi ◽  
R. Hejazi ◽  
A. Khayatian
Keyword(s):  
Ethanol Vapor ◽  
Sensing Properties ◽  
Vapor Sensing

Enhanced CO gas sensing properties of Cu doped SnO2 nanostructures prepared by a facile wet chemical method

2016 ◽  
Vol 18 (28) ◽  
pp. 18846-18854 ◽  
Author(s):  
Neha Bhardwaj ◽  
Akhilesh Pandey ◽  
Biswarup Satpati ◽  
Monika Tomar ◽  
Vinay Gupta ◽  
...  
Keyword(s):  
Chemical Method ◽  
Gas Sensing ◽  
Sno2 Nanostructures ◽  
Wet Chemical Method ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Wet Chemical ◽  
Excellent Selectivity ◽  
Co Gas

Cu doped SnO2 nanosheets and nanodiscs exhibit highly enhanced CO gas sensing properties and excellent selectivity for CO gas.

Improved ethanol vapor sensing properties of sputtered ZnO films by doping Ta

2019 ◽  
Vol 21 ◽  
pp. 100680 ◽  
Author(s):  
Xu Huang ◽  
Cuiping Li ◽  
Lirong Qian ◽  
Mingji Li ◽  
Hongji Li ◽  
...  
Keyword(s):  
Ethanol Vapor ◽  
Zno Films ◽  
Sensing Properties ◽  
Vapor Sensing

scholarly journals ZnO MICRORODS SURFACE-DECORATED BY WO3 NANORODS FOR ENHANCING NH3 GAS SENSING PERFORMANCE

2018 ◽  
Vol 54 (1A) ◽  
pp. 151 ◽  
Author(s):  
Nguyen Dac Dien
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Weight Ratio ◽  
Average Diameter ◽  
Wet Chemical Method ◽  
Hydrothermal Route ◽  
Reaction Route ◽  
Response Recovery ◽  
Wet Chemical ◽  
20 Nm

Regularly shaped, single-crystalline ZnO microrods (MRs) with wurtzite structure were prepared via a wet chemical method. The obtained rods possess average diameter and length of 350 nm and 3.5 μm, respectively. Besides, WO3 nanorods (NRs) with the size of 20 nm in diameter and 120 nm in length were synthesized by hydrothermal route. A facile solid state reaction route was employed to synthesize the WO3/ZnO structure by grinding WO3 NRs powder and ZnO MRs powder with various weight ratios (1:2, 1:1 and 2:1) together at room temperature without any surfactant and template. WO3 NRs were sprinkled on ZnO MRs surface and it was observed that the amount of WO3 significantly affected the overall surface of ZnO MRs. Furthermore, NH3 gas-sensing property of the obtained products were studied and compared with that of sole ZnO MRs sample. The results demonstrated that the sensors based on WO3/ZnO structures possessed larger response, better selectivity, faster response/recovery than the sensor based on pure ZnO MRs. Especially, the gas sensing property of the WO3/ZnO composite based sensor with weight ratio of 1:1 was superior to others. However, the operating temperature is quite high (400 C). The mechanism of gas sensing was also studied.

Effect of grain-size on the ethanol vapor sensing properties of room-temperature sputtered ZnO thin films

2015 ◽  
Vol 182 (11-12) ◽  
pp. 1991-1999 ◽  
Author(s):  
Athanasios Tamvakos ◽  
Davide Calestani ◽  
Dimitrios Tamvakos ◽  
Roberto Mosca ◽  
Daniele Pullini ◽  
...  
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Room Temperature ◽  
Ethanol Vapor ◽  
Zno Thin Films ◽  
Sensing Properties ◽  
Vapor Sensing

Removal of a melamine contaminant with Ag-doped ZnO nanocomposite materials

2019 ◽  
Vol 43 (47) ◽  
pp. 18848-18859 ◽  
Author(s):  
Mohammed M. Rahman ◽  
Hasan B. Balkhoyor ◽  
Abdullah M. Asiri
Keyword(s):  
Low Temperature ◽  
Alkaline Medium ◽  
Chemical Method ◽  
Nanocomposite Materials ◽  
Reducing Agents ◽  
Wet Chemical Method ◽  
Zno Nanosheets ◽  
Wet Chemical ◽  
Doped Zno

In this approach, Ag-doped ZnO nanosheets (Ag/ZnO NSs) were prepared via a facile wet-chemical method using reducing agents in an alkaline medium at a low temperature.

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