Pd-based eye-readable H2 sensors: Principles, developments, and perspectives

Li, Chao; Zheng, Fengshuang; Mi, Xuhong; Wei, Boxin; Zhang, Xuemin

doi:10.1016/j.optlastec.2024.110955

Cited by 5 publications

(2 citation statements)

References 148 publications

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“…Elaborate design of noble metal catalysts with high catalytic activity is a feasible way to enhance the sensitivity of the MOS gas sensor [18,19], and reduce the activation energy between the metal oxide and the target gas, thus facilitating the chemical gas sensing reaction. Zhang et al [20] proposed Pt nanoparticles (NPs) loaded on a BiVO 4 -based sensor for acetone sensing as the response value of Pt-BiVO 4 is higher than that of the BiVO 4 sensor alone due to the synergistic effects of Pt electronic and chemical sensitizations.…”

Section: Introductionmentioning

confidence: 99%

Pt-Embedded Metal–Organic Frameworks Deriving Pt/ZnO-In2O3 Electrospun Hollow Nanofibers for Enhanced Formaldehyde Gas Sensing

Zhu,

Wang,

Wang

et al. 2024

Chemosensors

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Functionalization by noble metal catalysts and the construction of heterojunctions are two effective methods to enhance the gas sensing performance of metal oxide-based sensors. In this work, we adopt the porous ZIF-8 as a catalyst substrate to encapsulate the ultra-small Pt nanoparticles. The Pt/ZnO-In2O3 hollow nanofibers derived from Pt/ZIF-8 were prepared by a facile electrospinning method. The 25PtZI HNFs sensor possessed a response value of 48.3 to 100 ppm HCHO, 2.7 times higher than the pristine In2O3, along with rapid response/recovery time (5/22 s), and lower theoretical detection limit (74.6 ppb). The improved sensing properties can be attributed to the synergistic effects of electron sensitization effects and catalytic effects of Pt nanoparticles, and the high surface O− absorbing capability of heterojunctions. The present study paves a new way to design high performance formaldehyde gas sensors in practical application.

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Section: Introductionmentioning

confidence: 99%

Pt-Embedded Metal–Organic Frameworks Deriving Pt/ZnO-In2O3 Electrospun Hollow Nanofibers for Enhanced Formaldehyde Gas Sensing

Zhu,

Wang,

Wang

et al. 2024

Chemosensors

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“…In order to further improve the gas-sensitive performance of gas sensors, the current mainstream method is to functionalize gas-sensitive materials through nanoparticle doping, surface modification, and other means, such as the use of dopants for surface structure regulation, noble metal nanoparticles modification, heterojunction construction, etc., which has been proven to be a scientific and effective method [ 14 , 15 ]. Graphene [ 16 ] is the hardest nanomaterial known to date and exhibits excellent mechanical properties, which theoretically have a Young’s modulus and strength of about 1 TPa and 130 GPa, respectively.…”

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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Recent Advances in Engineering of 2D Layered Metal Chalcogenides for Resistive‐Type Gas Sensor

Wu,

Hao,

Wang

2024

Small

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Abstract2D nanomaterials have triggered widespread attention in sensing applications. Especially for 2D layered metal chalcogenides (LMCs), the unique semiconducting properties and high surface area endow them with great potential for gas sensors. The assembly of 2D LMCs with guest species is an effective functionalization method to produce the synergistic effects of hybridization for greatly enhancing the gas‐sensing properties. This review starts with the synthetic techniques, sensing properties, and principles, and then comprehensively compiles the advanced achievements of the pristine 2D LMCs gas sensors. Key advances in the development of the functionalization of 2D LMCs for enhancing gas‐sensing properties are categorized according to the spatial architectures. It is systematically discussed in three aspects: surface, lattice, and interlayer, to comprehend the benefits of the functionalized 2D LMCs from surface chemical effect, electronic properties, and structure features. The challenges and outlooks for developing high‐performance 2D LMCs‐based gas sensors are also proposed.

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Pd-based eye-readable H2 sensors: Principles, developments, and perspectives

Cited by 5 publications

References 148 publications

Pt-Embedded Metal–Organic Frameworks Deriving Pt/ZnO-In2O3 Electrospun Hollow Nanofibers for Enhanced Formaldehyde Gas Sensing

Pt-Embedded Metal–Organic Frameworks Deriving Pt/ZnO-In2O3 Electrospun Hollow Nanofibers for Enhanced Formaldehyde Gas Sensing

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

Recent Advances in Engineering of 2D Layered Metal Chalcogenides for Resistive‐Type Gas Sensor

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