H<sub>2</sub>S Sensing Material Based on Cotton Fabrics Modified with Polyaniline

Almeida, Thuanny Moraes de; Maranhão, Fabíola da Silveira; Carvalho, Fernanda Veloso de; Middea, Antonieta; Araújo, Joyce R.; Júnior, Fernando Gomes de Souza

doi:10.1002/masy.201800111

Cited by 11 publications

(5 citation statements)

References 83 publications

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“…The LoD reported was ≈1 ppm and the range was 1-20 ppm with a sensitivity of ≈70% at 20 ppm H 2 S. Almeida et al demonstrated PANI modified cotton fabrics for H 2 S measurement with a range of 1-1000 ppm. [185] All these PANI-based H 2 S sensors have their own advantages and disadvantages with respect to the intended application of food spoilage detection. Compared to the number of available PANI based NH 3 sensors, there are not as many PANI based H 2 S in the recent literature and therefore there are opportunities for one to investigate the possibilities of developing new PANI-based disposable flexible H 2 S sensors.…”

Section: Polyaniline-based Hydrogen Sulfide Sensorsmentioning

confidence: 99%

Conducting Polymer Based Ammonia and Hydrogen Sulfide Chemical Sensors and Their Suitability for Detecting Food Spoilage

Preethichandra

Gholami

Izake

et al. 2022

Adv Materials Technologies

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health problems such as food poisoning. On the other hand, if non-spoiled food is thrown away as it passes the prespecified expiry date/time, then it is a waste of a valuable food resource. Annual food wastage accounts for one-third of the world's food production and in response to this problem, the Food and Agriculture Organization (FAO) of the United Nations has set one of the sustainable development goals (SDGs) to address it. SDG 12.3 has set the target of halving per capita global food waste at the retail and consumer levels and reducing food loss along both production and supply chains (including post-harvest losses) by 2030. [2] Therefore, a demand for novel food spoilage detection sensors for real-time monitoring of food quality is obvious. Food packaging processes are mainly performed at atmospheric conditions where air-carrying microorganisms may remain inside the sealed food packages. This provides a suitable environment for microorganisms to thrive within the package due to this air capture. Some types of microorganisms, such as Brochothrix thermosphacta, Carnobacterium spp., Lactobacillus spp., Lactococcus spp., Leuconostoc spp., Pediococcus spp., Stretococcus spp., Kurthia zopfii, and Weisella spp, [3] cause disintegration of the food and produce various gasses such as hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ), ammonia (NH 3 ), methane (CH 4 ), and other volatile organic compounds (VOCs). [4][5][6][7][8] The CO 2 level in atmospheric air is around 415 ppm and therefore detecting a variation of CO 2 concentration inside a food package at the very early stages of food spoilage is quite challenging. However, there are other types of food packaging called modified atmospheric packaging (MAP), where the package is vacuum-sealed or filled with different gases such as nitrogen combined with an antimicrobial active gas, such as carbon dioxide, to provide a barrier against food spoilage and improve the shelf-lifetime of the product. [9] There are multiple methods which are proposed by various research groups either for detecting the food spoilage or monitoring the food quality at early stages. Various parameters such as O 2 /CO 2 /NH 3 /H 2 S/VOC concentrations, temperature, humidity, pH value, and any specific chemicals inside the food package can be detected using a wide range of measurement techniques. [9] Figure 1 illustrates the three most common food categories and the gases that are emitted by microorganisms Food security is critical for the sustainability of society. The spoilage of stocked food is an ongoing problem that causes significant losses to the global economy. Novel portable analytical platforms that provide timely information on the condition of food stock can support informed decisionmaking on the safety of food consumption as well as on maximization of food storage lifetime. Ammonia (NH 3 ) and hydrogen sulfide (H 2 S) are two of the major harmful gases that are produced due to bacteria activity during the food spoilage process. The timely detection of these gases in food stocks h...

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Section: Polyaniline-based Hydrogen Sulfide Sensorsmentioning

confidence: 99%

Conducting Polymer Based Ammonia and Hydrogen Sulfide Chemical Sensors and Their Suitability for Detecting Food Spoilage

Preethichandra

Gholami

Izake

et al. 2022

Adv Materials Technologies

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“…Nowadays, the search for high‐performance, environmentally friendly, and low‐cost materials is constantly advancing. [ 7–114 ] According to Google Scholar, during the last decade (2010–2020), 1310000 articles were published in the area of high‐performance materials. They include high‐performance materials produced with polymers, with 12,5000 articles registered.…”

Section: Introductionmentioning

confidence: 99%

Geopolymer Microparticles as Up‐and‐Coming H₂S Sorbers

Maranhão¹,

Almeida²,

Souza

et al. 2021

Macromolecular Symposia

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Geopolymers are materials composed of aluminosilicates, which upon activation by the alkaline solution, form repeating units, being classified as inorganic polymers. Geopolymers have gained prominence due to obtaining the raw material that can be natural or residual, the ease of production, and cost-effective. These materials are widely used in civil construction for the replacement of Portland cement and also in the environmental area for the remediation of toxic compounds. However, there is a lack in the literature about the applications of these materials. Thus, this work deals with geopolymers for the sorption of hydrogen sulfide gas.

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“…Over the past few years, we have contributed to the polyaniline field by producing new materials. These materials were used as pressure (35,76,99,124,145,160), gas (78,114) and magnetic (130) sensors. Over the years, we realized the need to improve the preparation of these materials, making them more Eco-friendly than the ordinary blends.…”

Section: Introductionmentioning

confidence: 99%

Polyaniline: Trends and perspectives from text mining analysis

Gomes¹

2021

BJEDIS

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Polyaniline (PAni) is the oldest and most studied conductive polymer in the world. This polymer, reported by Letheby in 1862, was substantially better understood due to the tireless efforts of hundreds of scientists. Among them, Professor Alan G. MacDiarmid has contributed with more than one hundred and twenty published papers about PAni. During his last visit to Brazil (MACRO / IUPAC-2006), Professor MacDiarmid stated that "... I am sure there is still much to be studied about polyaniline...". Thus, the objective of this work is to carry out a Text Mining on PAni in the two last decades. For that, the main keywords associated with the material in question will be presented, year by year. This approach allowed seeing how the theme has evolved during this period. Besides that, Text Mining has helped us to extrapolate scenarios for the coming years. Thus, Nanotechnology, Molecular Modeling, and polyaniline will be the main drivers for accelerating the arrival of a new world, where science, machines, systems, and people will work together, bringing more efficient results and increasingly strategic processes, which will benefit all Humankind.

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H₂S Sensing Material Based on Cotton Fabrics Modified with Polyaniline

Cited by 11 publications

References 83 publications

Conducting Polymer Based Ammonia and Hydrogen Sulfide Chemical Sensors and Their Suitability for Detecting Food Spoilage

Conducting Polymer Based Ammonia and Hydrogen Sulfide Chemical Sensors and Their Suitability for Detecting Food Spoilage

Geopolymer Microparticles as Up‐and‐Coming H₂S Sorbers

Polyaniline: Trends and perspectives from text mining analysis

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H2S Sensing Material Based on Cotton Fabrics Modified with Polyaniline

Cited by 11 publications

References 83 publications

Conducting Polymer Based Ammonia and Hydrogen Sulfide Chemical Sensors and Their Suitability for Detecting Food Spoilage

Conducting Polymer Based Ammonia and Hydrogen Sulfide Chemical Sensors and Their Suitability for Detecting Food Spoilage

Geopolymer Microparticles as Up‐and‐Coming H2S Sorbers

Polyaniline: Trends and perspectives from text mining analysis

Contact Info

Product

Resources

About

H₂S Sensing Material Based on Cotton Fabrics Modified with Polyaniline

Geopolymer Microparticles as Up‐and‐Coming H₂S Sorbers