A new strategy to one-step construct polyoxometalate/semiconductor one-dimensional tandem heterojunctions toward optimized conductometric sensing performances of ethanol gas

Tian, Jinmei; Jiang, Bin; Shao, Hong; Wang, Yuting; Wang, Tianqi; Li, Feng; Li, Dan; Yang, Ying; Dong, Xiangting

doi:10.1016/j.snb.2022.132797

Cited by 26 publications

(10 citation statements)

References 38 publications

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“…Layered POMs/semiconductor interfaces cannot be formed. Recently, Tian et al prepared SnO 2 @POMs@WO 3 three-layer coaxial nanofibers by one-step coaxial electrospinning method, in which n–-n tandem heterojunctions were formed in series at the two interfaces, which can effectively inhibit electron and hole recombination . At the optimal temperature of 280 °C, SnO 2 @PW 12 @WO 3 composite nanomaterials have significantly improved the response of composite materials compared with SnO 2 @WO 3 nanofibers, and the response value to 100 ppm ethanol gas can reach 8.8.…”

Section: Poms For Enhancing the Sensing Performance Of Inorganic Semi...mentioning

confidence: 99%

Section: Poms For Enhancing the Sensing Performance Of Inorganic Semi...mentioning

confidence: 99%

Section: Immobilization Procedures Of Pomsmentioning

confidence: 99%

“…It is easy to immobilize POMs and control morphology, structure, and composition by adjusting electrospinning conditions. Tian et al synthesized PW 12 -doped In 2 O 3 composite nanofibers and SnO 2 @POMs@WO 3 -layered core–middle–shell nanofibers by electrospinning combined with calcination. , Sometimes, more complex methods are required for organic materials. In order to dope POMs into PANI, Ma et al added SiW 12 to aniline and FeCl 3 ·6H 2 O, with ether and water .…”

Section: Immobilization Procedures Of Pomsmentioning

confidence: 99%

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Application of Polyoxometalates in Chemiresistive Gas Sensors: A Review

Song

Wang

2022

ACS Sens.

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Polyoxometalates (POMs) are a series of molecular metal compounds based on W and Mo elements, exhibiting excellent physical and chemical properties. POMs have been widely used in the fields of photoelectric materials, catalytic materials, and coordination chemistry. In recent years, POMs have emerged in the field of chemiresistive gas sensors. They can work as electron acceptors and improve the gas-sensing performance of traditional sensing materials by means of capturing electrons from semiconductors, separating electrons produced by light excitation or thermal excitation and delaying the recombination of electrons and holes. So far, the highest sensing sensitivity response of POMs-based chemiresistive gas sensor is 231 to 1 ppm NO2 gas. In this review, an overview is investigated about how POMs have evolved as sensing materials in gas sensors. First, some POMs and POMs-based sensing materials in recent years are introduced and classified. After that, brief analyses for each kind of sensing materials are provided. Then we compare the reported POMs-based sensors in different sensing parameters. Finally, the future outlooks are discussed on the basis of the current developments. This work is the first comprehensive overview of POMs-based chemiresistive gas sensors. This work can provide valuable information for developing high-performance POMs-based gas sensors.

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Section: Poms For Enhancing the Sensing Performance Of Inorganic Semi...mentioning

confidence: 99%

Section: Poms For Enhancing the Sensing Performance Of Inorganic Semi...mentioning

confidence: 99%

Section: Immobilization Procedures Of Pomsmentioning

confidence: 99%

Section: Immobilization Procedures Of Pomsmentioning

confidence: 99%

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Application of Polyoxometalates in Chemiresistive Gas Sensors: A Review

Song

Wang

2022

ACS Sens.

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“…1 In order to realize the functional diversification and high-performance integration of composite materials, research on novel multi-functional composite materials has become a meaningful field of study. [2][3][4] Generally, the routine method for preparing composite materials is to directly add substances with different functions to the matrix. Nevertheless, this faces the distinct shortcoming that the direct interactions among the different substances can lead to mutual interferences among the different functions (e.g.…”

Section: Introductionmentioning

confidence: 99%