Electrospun n-p WO3/CuO heterostructure nanofibers as an efficient sarin nerve agent sensing material at room temperature

Alali, Khaled Tawfik; Liu, Jingyuan; Aljebawi, Kassem; Liu, Peili; Chen, Rongrong; Li, Rumin; Zhang, Hongquan; Zhou, Limin; Wang, Jun

doi:10.1016/j.jallcom.2019.04.157

Cited by 31 publications

(23 citation statements)

References 56 publications

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“…Heterojunction MOS nanofibers have improved sensitivity due to the formation of additional depletion layer. [ 47,61,124 ] A more detailed discussion of heterojunction 1D MOS‐based sensing materials for the gas sensing and related proposed mechanism for the enhancement of sensing performance is discussed in Section 4.3 . Moreover, electrospinning is one of the most versatile methods for the synthesis of core‐shell 1D nanostructures.…”

Section: Synthetic Methods Of 1d Metal Oxide Semiconductor Nanomaterialsmentioning

confidence: 99%

“…Among these different structures, monoclinic is the most stable phase from 17 to 330 °C, [ 123,124 ] which is the working temperature of WO 3 gas sensors in most cases. [ 47,71,125,126 ] Meanwhile, in doped WO 3 , the oxidation state of W could vary from W 4+ to W 6+ , leading to changes in overall crystal lattice structure, which will directly influence the sensing property of the WO 3 . [ 179 ] For example, Qin et al.…”

Section: Strategies For Enhancement Of Gas Sensing Performancementioning

confidence: 99%

“…Like noble metal doping, the nanocomposites of MOS‐based sensing materials also lead to enhancing gas sensing performance. Heterojunction of MOS/MOS, [ 47,61,105,125,235,274–285 ] MOS/TMDs, [ 241–243,286 ] and MOS/carbon‐based materials [ 224,225,228,230,247,287–291 ] have been widely reported in the past few decades. In general, due to the different semiconducting properties, the sensing mechanism of heterojunctions and homojunctions is different.…”

Section: Strategies For Enhancement Of Gas Sensing Performancementioning

confidence: 99%

“…Furthermore, chemiresistive sensors based on MOS materials require simple and low‐cost synthesis and fabrication methods, while providing several avenues for controlling sensing properties via nanoengineering of MOS chemical, compositional, and structural properties. [ 34 ] Until now, both p‐type (e.g., CuO [ 3,46,47 ] ) and n‐type MOS (e.g., WO 3 , [ 7,48–50 ] ZnO, [ 4,51–54 ] SnO 2 , [ 11,16,23 ] TiO 2 , [ 56,57 ] In 2 O 3 [ 12,54,55 ] ) have been widely used as gas sensing materials due to their high sensing performance.…”

Section: Introductionmentioning

confidence: 99%

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1D Metal Oxide Semiconductor Materials for Chemiresistive Gas Sensors: A Review

Yang

Myung

Tran

2021

Adv Elect Materials

155

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While numerous types of gas sensors have been developed for various industries and applications such as the automotive industry, environmental monitoring, and personal safety, nanoscale chemiresistive gas sensors have gained significant research interest due to several advantages such as high sensitivity, low power consumption, and portability. An essential component of these gas sensors is the sensing material where metal oxide semiconductor (MOS) materials are the most prevalent sensing material. Since the adoption of nanoscale synthesis methods for sensing materials development, such as electrospinning and hydrothermal synthesis, many novel 1D MOS‐based nanostructured sensing materials have been demonstrated to enhance gas sensing performance. Overall, nanoengineering approaches and mechanisms for enhancement of gas sensing performance of 1D metal oxide‐based sensing materials are systematically discussed and categorized into several overarching strategies, such as tuning of materials dimension, morphology, and composition. Furthermore, integration of 1D sensing nanomaterials into sensor devices are discussed from the perspective of different chemiresistive sensor architectures and device fabrication methods. Finally, this review also discusses use of 1D MOS materials for emerging and novel electronic nose applications.

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Section: Synthetic Methods Of 1d Metal Oxide Semiconductor Nanomaterialsmentioning

confidence: 99%

Section: Strategies For Enhancement Of Gas Sensing Performancementioning

confidence: 99%

Section: Strategies For Enhancement Of Gas Sensing Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

1D Metal Oxide Semiconductor Materials for Chemiresistive Gas Sensors: A Review

Yang

Myung

Tran

2021

Adv Elect Materials

155

View full text Add to dashboard Cite

show abstract

“…32 Based on the typical gas sensing mechanism of MOS materials, 33 various methods for optimizing the sensing performance of WO 3 -based sensors have been studied. These include different methods such as morphology control, 34 heterostructure construction, 35 defect introduction, 36 and metal doping or decoration. Among these methods, using noble metals (Au, 37 Pd, 38 Pt 39 ) to decorate the MOS material surface is considered to be a promising strategy to boost its sensing performance due to their catalytic properties, sensitization effect, or spillover effect.…”

Section: Introductionmentioning

confidence: 99%