Cobalt oxide based gas sensors on silicon substrate for operation at low temperatures

Wöllenstein, Jürgen; Burgmair, M.; Plescher, G.; Sulima, T.; Hildenbrand, J.; Böttner, H.; Eisele, I.

doi:10.1016/s0925-4005(03)00168-0

Cited by 211 publications

(107 citation statements)

References 7 publications

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“…Co 3 O 4 and its nanomaterials have been prepared and used in lithium batteries and gas sensors. [1][2][3][4][5] Co 3 O 4 and its doped or supported systems are well known to be active for the oxidation of carbon monoxide at low temperatures. [6][7][8][9][10][11][12][13] Recently, Xie et al reported that Co 3 O 4 nanorods not only catalyze CO oxidation at temperatures as low as À77 8C, but also remain stable in a moist stream of normal feed gas.…”

Section: Introductionmentioning

confidence: 99%

A DFT Study of CO Catalytic Oxidation by N₂O or O₂ on the Co₃O₄(110) Surface

Yang

et al. 2009

ChemCatChem

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The reaction mechanisms for CO catalytic oxidation by N2O or O2 on the Co3O4(110) surface were studied by DFT slab calculations. CO chemisorbs preferably at a surface Co3+ site. After the Co3+ site is completely covered, CO adsorbs at the neighboring twofold coordinated surface oxygen atom bonded to Co2+ and Co3+ cations, resulting in the formation of CO2 and an oxygen vacancy with a low energy barrier of 0.033 eV, which rationalizes the experimental observation that Co3O4‐based systems are active for CO oxidation at low temperatures. N2O or O2 interacts with the oxygen vacancy site to regenerate the surface, leaving N2 or the activated O2− species to be attacked by the second CO to yield CO2 to proceed with the catalytic cycle. The CO oxidation reaction follows the Mars– van Krevelen mechanism.

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Section: Introductionmentioning

confidence: 99%

A DFT Study of CO Catalytic Oxidation by N₂O or O₂ on the Co₃O₄(110) Surface

Yang

et al. 2009

ChemCatChem

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“…Co3O4 is also known as a promising material that has applications in many fields, such as heterogeneous catalysts, solid-state sensors and electrochemical devices [9][10][11][12][13][14][15]. Co3O4 nanostructures are expected to show even more excellent and tunable properties due to their versatile morphologies and structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of anions on the morphology of Co3O4 nanostructures grown by hydrothermal method and their pH sensing application

Hussain

Ibupoto

Abbasi

et al. 2014

Journal of Electroanalytical Chemistry

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Abstract:A fast, reliable, accurate, precise and sensitive pH sensor device is highly demanding for the monitoring of pH in biological, clinical and food industry samples. In this research work, the effect of anions on the morphology of cobalt oxide (Co3O4) nanostructures is investigated using low temperature chemical approach for the growth. Different anions have shown visible effect on the morphology of Co3O4 nanostructures. Scanning electron microscopy, X-ray diffraction and transmission electron microscopy techniques were used for the material characterization.This study has shown highly dense, uniform and good crystal quality of fabricated Co3O4 nanostructures. The nanostructures obtained from the cobalt chloride were used for the development of potentiometric pH sensor electrode. The pH sensor electrode showed excellent linearity and close to Nernstian response for the pH range of 3-13 with a sensitivity of -58.45 mV/pH. Moreover, the proposed sensor showed a fast response time of 53 s, and acceptable reducibility and repeatability. The highly sensitive and a fast time response of the proposed sensor device indicate its potential application for the monitoring of pH from real samples including biological fluids.

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“…Many families were categorized as living in food poverty. However, charities are encouraging low-income families not to cut down on their fresh food purchases, pointing to the greater health benefits Wöllenstein et al (2003) Food quality and safety monitoring using gas sensor Samaneh Matindoust et al…”

Section: Fresh Food Monitor In the Marketmentioning

confidence: 99%

Food quality and safety monitoring using gas sensor array in intelligent packaging

et al. 2016

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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation.*Related content and download information correct at time of download. Abstract Purpose -This paper aims to study different possibilities for implementing easy-to-use and cost-effective micro-systems to detect and trace expelled gases from rotten food. The paper covers various radio-frequency identification (RFID) technologies and gas sensors as the two promoting feasibilities for the tracing of packaged food. Monitoring and maintaining quality and safety of food in transport and storage from producer to consumer are the most important concerns in food industry. Many toxin gases, even in parts per billion ranges, are produced from corrupted and rotten food and can endanger the consumers' health. To overcome the issues, intelligent traceability of food products, specifically the packaged ones, in terms of temperature, humidity, atmospheric conditions, etc., has been paid attention to by many researchers. Design/methodology/approach -Food poisoning is a serious problem that affects thousands of people every year. Poisoning food must be recognized early to prevent a serious health problem. Contaminated food is usually detectable by odor. A small gas sensors and low-cost tailored to the type of food packaging and a communication device for transmitting alarm output to the consumer are key factors in achieving intelligent packaging. Findings -Conducting polymer composite, intrinsically conducting polymer and metal oxide conductivity gas sensors, metal-oxide-semiconductor field-effect transistor (MOSFET) gas sensors offer excellent discrimination and lead the way for a new generation of "smart sensors" which will mould the future commercial markets for gas sensors. Originality/value -Small size, low power consumption, short response time, wide operating temperature, high efficiency and small area are most important features of introduced system for using in package food.

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Cobalt oxide based gas sensors on silicon substrate for operation at low temperatures

Cited by 211 publications

References 7 publications

A DFT Study of CO Catalytic Oxidation by N₂O or O₂ on the Co₃O₄(110) Surface

A DFT Study of CO Catalytic Oxidation by N₂O or O₂ on the Co₃O₄(110) Surface

Effect of anions on the morphology of Co3O4 nanostructures grown by hydrothermal method and their pH sensing application

Food quality and safety monitoring using gas sensor array in intelligent packaging

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Cobalt oxide based gas sensors on silicon substrate for operation at low temperatures

Cited by 211 publications

References 7 publications

A DFT Study of CO Catalytic Oxidation by N2O or O2 on the Co3O4(110) Surface

A DFT Study of CO Catalytic Oxidation by N2O or O2 on the Co3O4(110) Surface

Effect of anions on the morphology of Co3O4 nanostructures grown by hydrothermal method and their pH sensing application

Food quality and safety monitoring using gas sensor array in intelligent packaging

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Product

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A DFT Study of CO Catalytic Oxidation by N₂O or O₂ on the Co₃O₄(110) Surface

A DFT Study of CO Catalytic Oxidation by N₂O or O₂ on the Co₃O₄(110) Surface