Reagent-less and sub-minute quantification of sulfite in food samples using substrate-integrated hollow waveguide gas sensors coupled to deep-UV LED

Barreto, Diandra Nunes; Martins, Gabriel Alves; Hauser, Peter C.; Mizaikoff, Boris; Petruci, João Flávio da Silveira

doi:10.1016/j.aca.2022.340596

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…Furthermore, the utilization of sodium sulfite and sodium sulfate in thermogalvanic gels opens up possibilities for further exploration and advancements in this field [ 33 , 34 , 35 ]. Researchers can continue to investigate their performance, optimize their properties and explore novel applications to harness the potential of these safe and reliable redox pairs for thermoelectric energy conversion and temperature monitoring [ 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Self-Powered, Non-Toxic, Recyclable Thermogalvanic Hydrogel Sensor for Temperature Monitoring of Edibles

et al. 2023

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Thermogalvanic hydrogel, an environmentally friendly power source, enable the conversion of low-grade thermal energy to electrical energy and powers microelectronic devices in a variety of scenarios without the need for additional batteries. Its toxicity, mechanical fragility and low output performance are a hindrance to its wide application. Here, we demonstrate thermoelectric gels with safe non-toxic, recyclable, highly transparent and flexible stretchable properties by introducing gelatin as a polymer network and SO3/42− as a redox electric pair. When the temperature difference is 10 K, the gel-based thermogalvanic cell achieves an open-circuit voltage of about 16.2 mV with a maximum short-circuit current of 39 μA. Furthermore, we extended the application of the Gel-SO3/42− gel to monitor the temperature of hot or cold food, enabling self-powered sensing for food temperature detection. This research provides a novel concept for harvesting low-grade thermal energy and achieving safe and harmless self-driven temperature monitoring.

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