Integration of a porous wood-based triboelectric nanogenerator and gas sensor for real-time wireless food-quality assessment

Cai, Chenchen; Mo, Jilong; Lu, Yanxu; Zhang, Ni; Wu, Zhengyang; Wang, Shuangfei; Nie, Shuangxi

doi:10.1016/j.nanoen.2021.105833

Cited by 139 publications

(64 citation statements)

References 43 publications

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“…The research progresss of high humidity resistive TENG is summarized in Figure 1f. With the surface permeable [19][20][21] and hydrophobic treatment [22][23][24][25] to suppress the dissipation of triboelectric charges, TENG can maintain the charge density of 115 µC m −2 even if the humidity increases up to 90%. [26] Moreover, utilizing absorbent materials [27][28][29][30][31] to make water molecules participate in triboelectrification and generate more triboelectric charges, the output performance of TENG is further improved to 244 µC m −2 with the RH increasing to 90%.…”

Section: Resultsmentioning

confidence: 99%

Achieving Ultrahigh Effective Surface Charge Density of Direct‐Current Triboelectric Nanogenerator in High Humidity

Liu

Zhao

et al. 2022

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As an emerging energy‐harvesting technology, the triboelectric nanogenerator (TENG) is considered a powerful driving force toward the new‐era of Internet of Things and artificial intelligence, but its output performance is dramatically influenced by environmental humidity. Herein, a direct current TENG (DC‐TENG) based on the triboelectrification effect and electrostatic breakdown is reported to address the problem of output attenuation in high humidity environments for the conventional TENGs. It is found that high humidity not only enhances the sliding triboelectrification effect of hydrophobic triboelectric materials, but also promotes the electrostatic breakdown process for DC‐TENG, thus contributing to the improvement of DC‐TENG output. Furthermore, taking poly(vinyl chloride) film as the friction layer, the effective surface charge density of DC‐TENG with microstructure‐designed electrode achieves a milestone value of ≈2.97 mC m−2 under 90% relative humidity, which is almost 1.42‐fold larger than that under 30% RH. This work not only establishes an effective methodology to boost the output performance of TENG in a high humidity environment, but also establishes a foundation for its practical applications in large‐scale energy harvesting.

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Section: Resultsmentioning

confidence: 99%

Achieving Ultrahigh Effective Surface Charge Density of Direct‐Current Triboelectric Nanogenerator in High Humidity

Liu

Zhao

et al. 2022

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“…This study presents the potential applications of self‐powered systems in the field of food safety and quality assessment. [ 108 ] Using wood or cellulose as triboelectric materials also provides a good way to which limits the further development of cost‐effective and environmentally friendly TENG‐based active sensors. [ 109 ]…”

Section: Triboelectric Nanogenerators As Self‐powered Active Chemical/biological Sensorsmentioning

confidence: 99%

Triboelectric Nanogenerator‐Based Sensor Systems for Chemical or Biological Detection

et al. 2021

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The rapid advances in the Internet of things and wearable devices have created a massive platform for sensor systems that detect chemical or biological agents. The accelerated development of these devices in recent years has simultaneously aggravated the power supply problems. Triboelectric nanogenerators (TENGs) represent a thriving renewable energy technology with the potential to revolutionize this field. In this review, the significance of TENG‐based sensor systems in chemical or biological detection from the perspective of the development of power supply for biochemical sensors is discussed. Further, a range of TENGs are classified according to their roles as power supplies and/or self‐powered active sensors. The TENG powered sensor systems are further discussed on the basis of their framework and applications. The working principles and structures of different TENG‐based self‐powered active sensors are presented, along with the classification of the sensors based on these factors. In addition, some representative applications are introduced, and the corresponding challenges are discussed. Finally, some perspectives for the future innovations of TENG‐based sensor systems for chemical/biological detection are discussed.

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“…Food spoilage by bacteria causes the formation of gas molecules such as trimethylamine (TMA) and dimethylacetamide (DMA), as well as decomposing urea and amino acids into ammonia [ 31 ]. Therefore, the ammonia released during microbial spoilage of food may act as a marker gas for the evaluation of food quality [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

2022

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The use of petroleum-based plastics in food packaging leads to various environmental impacts, while spoilage of food and misinterpretation of food-date labelling account for food insecurity; therefore, a biopolymer capable of indicating food edibility is prepared to resolve these issues. In this research, starch/polyaniline (starch/PANI) biopolymer film was synthesised and investigated as an ammonia sensor for potential application as intelligent food packaging. FT-IR and XRD were used to confirm the composition of the biopolymer films, while UV-Vis spectrometry was applied to identify the oxidation state of PANI in emeraldine form. PANI was successfully incorporated into the starch matrix, leading to better thermal stability (TGA) but decreasing the crystallinity of the matrix (DSC). The performance of the polymer-film sensor was determined through ammonia-vapour sensitivity analysis. An obvious colour change from green to blue of starch/PANI films was observed upon exposure to the ammonia vapour. Starch/PANI 0.4% is the optimum composition, having the best sensor performance with good linearity (R2 = 0.9459) and precision (RSD = 8.72%), and exhibiting excellent LOD (245 ppm). Furthermore, the starch/PANI films are only selective to ammonia. Therefore, the starch/PANI films can be potentially applied as colourimetric ammonia sensors for intelligent food packaging.

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Integration of a porous wood-based triboelectric nanogenerator and gas sensor for real-time wireless food-quality assessment

Cited by 139 publications

References 43 publications

Achieving Ultrahigh Effective Surface Charge Density of Direct‐Current Triboelectric Nanogenerator in High Humidity

Achieving Ultrahigh Effective Surface Charge Density of Direct‐Current Triboelectric Nanogenerator in High Humidity

Triboelectric Nanogenerator‐Based Sensor Systems for Chemical or Biological Detection

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

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