A Flexible and Wearable Nylon Fiber Sensor Modified by Reduced Graphene Oxide and ZnO Quantum Dots for Wide-Range NO2 Gas Detection at Room Temperature

Lin, Qijing; Zhang, Fuzheng; Zhao, Na; Zhao, Libo; Wang, Zuowei; Yang, Ping; Lu, Dejiang; Dong, Tao

doi:10.3390/ma15113772

Cited by 11 publications

(3 citation statements)

References 52 publications

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“…The transfer procedures make graphene film prone to breakage, surface contamination and lattice defects, and directly affect the performance and lifetime of the device [ 32 ]. The post-processing goal is always to get graphene films with few defects and clean surfaces.…”

Section: In-situ Growth Makes Graphene Film Of Fewer Defects Availablementioning

confidence: 99%

In-Situ Growth of Graphene Films to Improve Sensing Performances

Liu

et al. 2022

Materials

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Graphene films made by chemical vapor deposition (CVD) are a popular method to modify sensors by virtue of large-scale and reproducibility, but suffer from various surface contamination and structural defects induced during transfer procedures. In-situ growth of graphene films is proposed in this review article to improve sensing performance. Root causes of the surface contamination and structural defects are revealed with several common transfer methods. In-situ approaches are introduced and compared, growing graphene films with clean surfaces and few defects. This allows graphene film to display superior sensing performance for sensor applications. This work may reasonably be expected to offer a good avenue for synthesis of graphene films applicable for sensing applications.

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Section: In-situ Growth Makes Graphene Film Of Fewer Defects Availablementioning

confidence: 99%

In-Situ Growth of Graphene Films to Improve Sensing Performances

Liu

et al. 2022

Materials

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“…Lin et al [ 7 ] used Cu nanowires to synthesize CuO nanotubes for CO gas detection through a high-temperature annealing process, which has a response of 1.13 (R a /R g ) to 100 ppm CO gas at 100 °C. Compared with other gas sensors with rigid structures, flexible gas sensors manufactured on soft substrates such as polymer, textile, and paper substrates overcome the disadvantages of large volume, poor ductility, and low flexibility of traditional rigid structures [ 8 , 9 ]. Therefore, they are more suitable for complex situation monitoring and fine operation requirements, which have shown great application prospects and value in the consumer electronics market, such as in wearable devices and smart mobile terminals [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

RGO/CuCl-Based Flexible Gas Sensor for High-Concentration Carbon Monoxide Gas Detection at Room Temperature

Liu,

Zhang,

Pei

et al. 2024

Micromachines

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Carbon monoxide (CO) gas sensors are widely used, especially for environmental monitoring in confined spaces such as the landscape of mining cave ruins in mining parks, which is essential for ensuring the health and safety of tourists and staff. In this paper, a flexible CO gas sensor based on polyimide, interdigital electrodes, and reduced graphene oxide (RGO)/cuprous chloride (CuCl) composite film is designed and manufactured for reliable room temperature detection of high-concentration CO gas. The structure size of RGO/CuCl gas-sensitive film is 5 × 5 mm. The RGO with a 62.65% C-C bond is prepared by the thermal reduction method. The test results show that the sensor has a high response in the range of 400–2000 ppm CO gas concentration, and the maximum response is 1.56. The linear correlation coefficient of the sensor is 0.981, which indicates that the sensor has good output response characteristics. The response time of the sensor for 400 ppm CO gas is 332 s, which indicates that the sensor has a fast response rate. Furthermore, compared with other gases, the sensor shows higher gas selectivity for CO gas. This sensor has the characteristics of small size and easy attachment; therefore, it can be installed on the shoulder or helmet of tourists’ safety suits, providing personalized real-time warning prompts for tourists’ physical health status.

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“… 7 ZnO QDs was also used to fabricated gas sensor for NO 2 and methanol detection. 8 , 9 Moreover, ZnO QDs was reported significantly promoted tomato ( Solanum lycopersicum ) and pumpkin ( Cucurbita moschata Duch .) growth in comparison with the equivalent concentrations of other sizes of ZnO particles.…”

Section: Introductionmentioning

confidence: 99%

Proteomics and Metabolomics Analysis Reveals the Toxicity of ZnO Quantum Dots on Human SMMC-7721 Cells

Yang¹,

Wang²,

Song³

et al. 2023

IJN

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Purpose ZnO quantum dots (QDs) are composed of less toxic metals than other QDs but have the same interesting photochemical properties. Thus, they have received considerable attention recently. Nevertheless, their toxicity cannot be ignored. Methods In this study, we incubated ZnO QDs with human SMMC-7721 cells for 24 h to assess their nanotoxicity through proteomics (Fold change >1.5 and p -value <0.05) and metabolomics (Fold change ≥ 1.5; VIP ≥ 1; p -value < 0.05) analyses. Results Both of 174 and 219 significantly changed metabolites were identified in human SMMC-7721 cells treated with 20 and 50 µg/mL ZnO QDs, respectively. ZnO QDs significantly modified metabolic pathways, including purine metabolism, ferroptosis, morphine addiction, alcoholism, cGMP-PKG signaling, and Cushing syndrome. Moreover, we identified 105 and 8 differentially expressed proteins in cells treated with 20 and 50 µg/mL ZnO QDs, and the pathways of alcoholism and Cushing syndrome were enriched. Conclusion ZnO QDs did not affect cell viability in a CCK8 assay, but disturbed the level of intracellular metabolites and proteins at 20 µg/mL. The KEGG analyses of the metabolomics and proteomics data both enriched the alcoholism and Cushing syndrome pathways. These results provide an experimental basis for future research on the safe use of nanomaterials.

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A Flexible and Wearable Nylon Fiber Sensor Modified by Reduced Graphene Oxide and ZnO Quantum Dots for Wide-Range NO2 Gas Detection at Room Temperature

Cited by 11 publications

References 52 publications

In-Situ Growth of Graphene Films to Improve Sensing Performances

In-Situ Growth of Graphene Films to Improve Sensing Performances

RGO/CuCl-Based Flexible Gas Sensor for High-Concentration Carbon Monoxide Gas Detection at Room Temperature

Proteomics and Metabolomics Analysis Reveals the Toxicity of ZnO Quantum Dots on Human SMMC-7721 Cells

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