TiO2 Nanotubes Membrane Flexible Sensor for Low-Temperature H2S Detection

Perillo, P.M.; Rodríguez, Daniel

doi:10.3390/chemosensors4030015

Cited by 13 publications

(10 citation statements)

References 28 publications

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“…Among many metal oxides, 1D TiO 2 nanostructures have been extensively used as sensing materials to build a high-performance chemical sensor for the detection of reducing gases such as H 2 , VOCs (ethanol, acetone etc.) H 2 S, NH 3 and so on [ 40 , 71 , 72 , 78 ].…”

Section: Chemical Sensing Propertiesmentioning

confidence: 99%

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1D Titanium Dioxide: Achievements in Chemical Sensing

et al. 2020

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For the last two decades, titanium dioxide (TiO2) has received wide attention in several areas such as in medicine, sensor technology and solar cell industries. TiO2-based gas sensors have attracted significant attention in past decades due to their excellent physical/chemical properties, low cost and high abundance on Earth. In recent years, more and more efforts have been invested for the further improvement in sensing properties of TiO2 by implementing new strategies such as growth of TiO2 in different morphologies. Indeed, in the last five to seven years, 1D nanostructures and heterostructures of TiO2 have been synthesized using different growth techniques and integrated in chemical/gas sensing. Thus, in this review article, we briefly summarize the most important contributions by different researchers within the last five to seven years in fabrication of 1D nanostructures of TiO2-based chemical/gas sensors and the different strategies applied for the improvements of their performances. Moreover, the crystal structure of TiO2, different fabrication techniques used for the growth of TiO2-based 1D nanostructures, their chemical sensing mechanism and sensing performances towards reducing and oxidizing gases have been discussed in detail.

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Section: Chemical Sensing Propertiesmentioning

confidence: 99%

“…Therefore, finding equipment for early detection of H 2 S is highly recommended. In this context, P. M. Perillo et al fabricated flexible H 2 S sensors based on anatase TiO 2 nanotubes [ 72 ]. The tube length was 12 µm, while the pore and wall diameters were approximately 100 nm and 30 nm, respectively.…”

Section: Chemical Sensing Propertiesmentioning

confidence: 99%

1D Titanium Dioxide: Achievements in Chemical Sensing

et al. 2020

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“…The detection of H 2 S can give useful information to identify the overcooked and rotten food [74]. Various oxide materials and their compositions have been studied for the fabrication of H 2 S sensors [75][76][77][78][79][80][81][82][83][84]. Porous metal oxide nanostructures, such as TiO 2 , NiO, and CuO are very attractive materials for H 2 S detection [75][76][77]85].…”

Section: Food Quality Controlmentioning

confidence: 99%

“…Various oxide materials and their compositions have been studied for the fabrication of H 2 S sensors [75][76][77][78][79][80][81][82][83][84]. Porous metal oxide nanostructures, such as TiO 2 , NiO, and CuO are very attractive materials for H 2 S detection [75][76][77]85]. They have shown a good response towards low concentrations of H 2 S. In addition, the porous NiO and CuO with p-type conductivity could detect H 2 S in ppb level at relatively low operating temperatures [76,77].…”

Section: Food Quality Controlmentioning

confidence: 99%

Metal Oxide Nanostructures in Food Applications: Quality Control and Packaging

et al. 2018

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Metal oxide materials have been applied in different fields due to their excellent functional properties. Metal oxides nanostructuration, preparation with the various morphologies, and their coupling with other structures enhance the unique properties of the materials and open new perspectives for their application in the food industry. Chemical gas sensors that are based on semiconducting metal oxide materials can detect the presence of toxins and volatile organic compounds that are produced in food products due to their spoilage and hazardous processes that may take place during the food aging and transportation. Metal oxide nanomaterials can be used in food processing, packaging, and the preservation industry as well. Moreover, the metal oxide-based nanocomposite structures can provide many advantageous features to the final food packaging material, such as antimicrobial activity, enzyme immobilization, oxygen scavenging, mechanical strength, increasing the stability and the shelf life of food, and securing the food against humidity, temperature, and other physiological factors. In this paper, we review the most recent achievements on the synthesis of metal oxide-based nanostructures and their applications in food quality monitoring and active and intelligent packaging.

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“…A pesar de que en los últimos años se han hecho avances significativos en el modelamiento y solución de problemas que envuelven fuentes discretas de generación de calor [16][17][18], es fundamental extender el uso de las técnicas analíticas para modelar fuentes de generación de calor con formas más complejas, de relevancia para la ingeniería y que se encuentren comercialmente disponibles. En este trabajo utilizamos el método integral de las funciones de Green para determinar la solución analítica de la distribución de temperaturas tridimensional en un medio homogéneo con una fuente de generación de calor en forma de onda rectangular, geometría típica usada en los calentadores eléctricos flexibles que están comercialmente disponibles [19][20][21]. Utilizando la solución analítica obtenida, se presenta una ecuación simple que permite calcular la conductividad térmica efectiva de un cuerpo a partir de los datos experimentales de temperatura y posición.…”

Section: Introductionunclassified

Solución Analítica de la Distribución de Temperaturas en un Medio Homogéneo Debido a un Cable Eléctrico con Forma de Onda Rectangular

Diestra-Cruz¹,

Brunet²,

Santos-Sánchez³

et al. 2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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Due to the limited amount of oil reserves, it is essential to ensure the efficient use of available energy, which is closely linked to the optimal design of electrical devices. Because these devices work with electrical energy, they cannot avoid having discrete heat generating sources and their design depends on the precise determination of the temperature field in the body. In this work, the integral method of Green's functions is used to determine the three-dimensional temperature distribution of a homogeneous medium due to a rectangular waveshaped heat generation source. The geometry of the heat generation has been selected in such a way that it has the typical shape of the commercially available flexible electric heaters. The solution obtained is exact and mathematically simple. To demonstrate the versatility of the results, this analytical solution has been compared with the purely numerical solution obtained using a computer package widely used in engineering (COMSOL Multiphysics). The analytical and numerical results coincide well in all the evaluated ranges. Using the equation obtained in this work, a procedure is proposed to determine the effective thermal conductivity of a material from the experimental data of temperature and position. The results of this research offer a simple way to calculate the thermal conductivity of a material and can be applied in the design of thermo-optical devices, flexible electric heaters or thermo-adjustable microfluidic devices.

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TiO2 Nanotubes Membrane Flexible Sensor for Low-Temperature H2S Detection

Cited by 13 publications

References 28 publications

1D Titanium Dioxide: Achievements in Chemical Sensing

1D Titanium Dioxide: Achievements in Chemical Sensing

Metal Oxide Nanostructures in Food Applications: Quality Control and Packaging

Solución Analítica de la Distribución de Temperaturas en un Medio Homogéneo Debido a un Cable Eléctrico con Forma de Onda Rectangular

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