Flexible, 3D SnS2/Reduced graphene oxide heterostructured NO2 sensor

Wu, Jin; Wu, Zixuan; Ding, Haojun; Wei, Yuming; Huang, Wenxi; Xing, Yang; Li, Zhenyi; Qiu, Lin; Wang, Xiaotian

doi:10.1016/j.snb.2019.127445

Cited by 98 publications

(56 citation statements)

References 48 publications

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“…fabricated flexible NO 2 sensors based on 3D SnS 2 /rGO, which displays 22.6 times higher response compared with the pristine rGO. [ 242 ] Song et al. designed the 3D hybridizing α‐Fe 2 O 3 nanorods arrays@GO materials.…”

Section: Materials For Gas Sensingmentioning

confidence: 99%

Recent Progress of Nanostructured Sensing Materials from 0D to 3D: Overview of Structure–Property‐Application Relationship for Gas Sensors

2021

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Along with the progress of nanoscience and nanotechnology, nanomaterials with attractive structural and functional properties have gained more attention than ever before, especially in the field of electronic sensors. In recent years, the gas sensing devices have made great achievement and also created wide application prospects, which leads to a new wave of research for designing advanced sensing materials. There is no doubt that the characteristics are highly governed by the sensitive layers. For this reason, important advances for the outstanding, novel sensing materials with different dimensional structures including 0D, 1D, 2D, and 3D are reported and summarized systematically. The sensing materials cover noble metals, metal oxide semiconductors, carbon nanomaterials, metal dichalcogenides, g‐C3N4, MXenes, and complex composites. Discussion is also extended to the relation between sensing performances and their structure, electronic properties, and surface chemistry. In addition, some gas sensing related applications are also highlighted, including environment monitoring, breath analysis, food quality and safety, and flexible wearable electronics, from current situation and the facing challenges to the future research perspectives.

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Section: Materials For Gas Sensingmentioning

confidence: 99%

Recent Progress of Nanostructured Sensing Materials from 0D to 3D: Overview of Structure–Property‐Application Relationship for Gas Sensors

2021

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“…When SnS 2 is coupled with 3D graphene, their properties are complementary to each other. Wu et al [ 86 ] demonstrated a kind of 3D structured SnS 2 /RGO heterojunction, which was synthesized through a facile hydrothermal route. Figure 3 shows the microstructure, gas responses, and sensing mechanism of the SnS 2 /RGO sensor.…”

Section: No 2 Gas Sensorsmentioning

confidence: 99%

“… ( a ) SEM image of 3D SnS 2 /RGO; ( b ) Dynamic responses of SnS 2 /RGO to NO 2 ; ( c ) Conductance variation of SnS 2 /RGO versus operation temperature; ( d ) RT sensing responses of SnS 2 /RGO and RGO; ( e ) Schematic illustration of the NO 2 sensing mechanism of the SnS 2 /RGO sensor [ 86 ]. …”

Section: Figurementioning

confidence: 99%

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Dong

Xiao

Chu

et al. 2021

Sensors

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Air pollution is becoming an increasingly important global issue. Toxic gases such as ammonia, nitrogen dioxide, and volatile organic compounds (VOCs) like phenol are very common air pollutants. To date, various sensing methods have been proposed to detect these toxic gases. Researchers are trying their best to build sensors with the lowest detection limit, the highest sensitivity, and the best selectivity. As a 2D material, graphene is very sensitive to many gases and so can be used for gas sensors. Recent studies have shown that graphene with a 3D structure can increase the gas sensitivity of the sensors. The limit of detection (LOD) of the sensors can be upgraded from ppm level to several ppb level. In this review, the recent progress of the gas sensors based on 3D graphene frameworks in the detection of harmful gases is summarized and discussed.

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“…High-performance detecting of toxic gas molecules, such as NO 2 and NH 3 , is crucial for industry application and real-time monitoring of environmental pollutants [1,2], as it is widely agreed that NO 2 can produce acid rain and have adverse effects on plant growth [3,4]. Moreover, long-term exposure to NO 2 can result in human respiratory diseases, such as bronchitis, emphysema, and asthma [5,6]. Consequently, extensive attention and research have been focusing on the development of NO 2 sensors that are based on diverse sensing materials.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Dioxide Gas Sensor Based on Ag-Doped Graphene: A First-Principle Study

Liu

Chen

et al. 2021

Chemosensors

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High-performance tracking trace amounts of NO2 with gas sensors could be helpful in protecting human health since high levels of NO2 may increase the risk of developing acute exacerbation of chronic obstructive pulmonary disease. Among various gas sensors, Graphene-based sensors have attracted broad attention due to their sensitivity, particularly with the addition of noble metals (e.g., Ag). Nevertheless, the internal mechanism of improving the gas sensing behavior through doping Ag is still unclear. Herein, the impact of Ag doping on the sensing properties of Graphene-based sensors is systematically analyzed via first principles. Based on the density-functional theory (DFT), the adsorption behavior of specific gases (NO2, NH3, H2O, CO2, CH4, and C2H6) on Ag-doped Graphene (Ag–Gr) is calculated and compared. It is found that NO2 shows the strongest interaction and largest Mulliken charge transfer to Ag–Gr among these studied gases, which may directly result in the highest sensitivity toward NO2 for the Ag–Gr-based gas sensor.

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Flexible, 3D SnS2/Reduced graphene oxide heterostructured NO2 sensor

Cited by 98 publications

References 48 publications

Recent Progress of Nanostructured Sensing Materials from 0D to 3D: Overview of Structure–Property‐Application Relationship for Gas Sensors

Recent Progress of Nanostructured Sensing Materials from 0D to 3D: Overview of Structure–Property‐Application Relationship for Gas Sensors

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Nitrogen Dioxide Gas Sensor Based on Ag-Doped Graphene: A First-Principle Study

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