Enhanced performance of novel calcium/aluminum co-doped zinc oxide for CO 2 sensors

Dhahri, R.; Leonardi, Salvatore Gianluca; Hjiri, M.; Mır, L. El; Bonavita, A.; Donato, Nicola; Iannazzo, Daniela; Neri, G.

doi:10.1016/j.snb.2016.07.155

Cited by 98 publications

(58 citation statements)

References 44 publications

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“…As a consequence of the limited active sites, the sensitivity was reduced since the active sites are used for gas sensing. 6,55 Although, the pristine SnO 2 sensor surface could hold water vapour for a long duration during the exposure to humidity, which resulted in high sensitivity, the Ni-SnO 2 sensor failed to hold water vapour for a long duration under humidity, thus reducing the sensitivity. 56 On further increasing Ni doping, the surface of the sensor failed to hold water vapour again, thus decreasing the overall sensitivity.…”

Section: Resultsmentioning

confidence: 99%

“…3 Furthermore, the presence of carbon dioxide in the environment is steadily increasing as it is generated from motor vehicles, industries and other resources, which are logically responsible for increased global warming. [4][5][6] The industrial revolution is one of the major factors responsible for increasing the carbon dioxide levels. Thus, the tracking and control of carbon dioxide is essentially important in food packaging and breath analysis technologies.…”

Section: Introductionmentioning

confidence: 99%

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A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

Manikandan¹,

Petrila

Vigneselvan

et al. 2020

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

Manikandan¹,

Petrila

Vigneselvan

et al. 2020

RSC Adv.

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“…Where d is the average of crystal size; K is constant values which related to the shape of the polycrystals (0.9);  is the X-ray wavelength of Cu Kα radiation (1.5418 Å);  is FWHM of the XRD peak value and Ѳ  is the maximum of Bragg's angle in radians [52,53]. By using these data, the estimated crystallite sizes for CaO and La/CaO are shown in Table 1.…”

Section: Surface Area and Crystallite Sizementioning

confidence: 99%

Evaluation of La-Doped CaO Derived from Cockle Shells for Photodegradation of POME

Ghazali

Kem

Abdullah

et al. 2019

Bull. Chem. React. Eng. Catal.

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Photocatalysis has merged to be one of the most promising technology in wastewater remediation. However, the application of photocatalysis in treating palm oil mill effluent (POME) is still limited. Many researches were conducted to explore simple and cost-effective alternatives to replace TiO2 for various industrial purposes. Therefore, the aim of this study is to synthesize and characterize lanthanum doped calcium oxide (La/CaO) as photocatalyst as well as to evaluate the performance of these photocatalysts in the degradation of POME. The photocatalyst used in this study was converted from cockle shells to transform into calcium oxide (CaO) through calcination process. The CaO produced was doped with 1 wt%, 3 wt%, and 5 wt% of lanthanum (La) using wet impregnation method to enhance its photocatalytic activity. The photocatalysts were characterised using X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM), Energy-Dispersion X-ray (EDX), and Inductively Coupled Plasma Mass Spectrometry (ICPMS). Then, this photocatalyst was performed on POME under UVC in a batch system by using different La/CaO at optimum catalyst dosage of 3.0 g/L. Through this research, it was found that the POME degradation through photocatalytic reaction was increased with the incorporation of La where 3 wt% La/CaO showed the highest POME degradation compared to others. This is due to the larger BET surface area that provides more active sites resulted from the incorporation of La. The findings of this study imply that the contaminants in POME can be reduced by utilizing CaO derived from cockle shells. , respectively [1]. Freely discharged of POME can bring severe impacts to the environment and increase the likelihood of affecting the aquatic life and decreasing the water quality because it contains high level of pollutants such as suspended solid, residual oil and grease, chemical oxygen demand (COD), and biochemical oxygen demand (BOD). At presence, numerous conventional methods have been used in treating POME such as anaerobic digestion [2][3][4][5], membrane technology [6][7][8], and adsorp-

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“…Zinc oxide (ZnO) [ 8 ] is a semiconductor with a wide band gap and a high electron mobility. ZnO nanostructures exhibit desirable physical and chemical properties for use in a variety of applications, including electronic devices [ 9 ], sensors [ 10 , 11 ] and optoelectronic devices [ 12 ]. There are a number of different methods used to fabricate ZnO films [ 13 , 14 ], including ultrasonic spraying, thermal evaporation, and chemical vapor deposition, etc.…”

Section: Introductionmentioning

confidence: 99%

Electrospray Deposition of ZnO Thin Films and Its Application to Gas Sensors

Lin

Wang

et al. 2018

Micromachines

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Electrospray is a simple and cost-effective method to fabricate micro-structured thin films. This work investigates the electrospray process of ZnO patterns. The effects of experimental parameters on jet characteristics and electrosprayed patterns are studied. The length of stable jets increases with increasing applied voltage and flow rate, and decreases with increasing nozzle-to-substrate distance, while electrospray angles exhibit an opposite trend with respect to the stable jet lengths. The diameter of electrosprayed particles decreases with increasing applied voltage, and increases with flow rate. Furthermore, an alcohol gas sensor is presented. The ZnAc is calcined into ZnO, which reveals good repeatability and stability of response in target gas. The sensing response, defined as the resistance ratio of R0/Rg, where R0 and Rg are resistance of ZnO in air and alcohol gas, increases with the concentration of alcohol vapors and electrospray deposition time.

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Enhanced performance of novel calcium/aluminum co-doped zinc oxide for CO 2 sensors

Cited by 98 publications

References 44 publications

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

Evaluation of La-Doped CaO Derived from Cockle Shells for Photodegradation of POME

Electrospray Deposition of ZnO Thin Films and Its Application to Gas Sensors

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Enhanced performance of novel calcium/aluminum co-doped zinc oxide for CO 2 sensors

Cited by 98 publications

References 44 publications

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO2) for sensing carbon dioxide gas and humidity

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO2) for sensing carbon dioxide gas and humidity

Evaluation of La-Doped CaO Derived from Cockle Shells for Photodegradation of POME

Electrospray Deposition of ZnO Thin Films and Its Application to Gas Sensors

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A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity