Hydrogen sensors based on Pt-decorated SnO2 nanorods with fast and sensitive room-temperature sensing performance

Chen, Zihui; Hu, Keyang; Yang, Piaoyun; Fu, Xingxing; Zhao, Wenzhu; Yang, Shulin; Xiong, Juan; Zhang, Xianghui; Hu, Yongming; Gu, Haoshuang

doi:10.1016/j.jallcom.2019.152086

Cited by 43 publications

(21 citation statements)

References 39 publications

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“…It is necessary to mention that the sensitivity of VOPc + Pd-NP structures to ammonia also increases in comparison with VOPc films, but this is not as prominent as in the case of hydrogen. Note that the sensor performance of various sensors on the basis of heterostructures of metal oxides with metal layers or nanoparticles towards hydrogen has been reported in the literature [53][54][55][56][57]. Several examples of sensor characteristics including the data obtained in this work are summarized in Table 2.…”

Section: Hybrid Structures Of Vopc With Pd Nanoparticlesmentioning

confidence: 73%

Vanadyl Phthalocyanine Films and Their Hybrid Structures with Pd Nanoparticles: Structure and Sensing Properties

Klyamer

Sukhikh

Николаева

et al. 2020

Sensors

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In this work, thin films of vanadyl phthalocyanines (VOPc and VOPcF4) are studied as active layers for the detection of gaseous ammonia and hydrogen. The effect of F-substituents on the structural features of vanadyl phthalocyanine films and their sensor response toward ammonia (10–50 ppm) and hydrogen (100–500 ppm) is investigated by X-ray diffraction (XRD) and chemiresistive methods, respectively. It is shown that the sensor response of VOPcF4 films to ammonia is 2–3 times higher than that of VOPc films. By contrast, the sensor response to hydrogen is higher in the case of VOPc films. Apart from this, the hybrid structures of vanadyl phthalocyanine films with Pd nanoparticles deposited on their surface by a chemical vapor deposition method are also tested to reveal the effect of Pd nanoparticles on the sensitivity of VOPc films to hydrogen. Deposition of Pd nanoparticles on the surface of VOPc films leads to the noticeable increase of their sensitivity to hydrogen.

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Section: Hybrid Structures Of Vopc With Pd Nanoparticlesmentioning

confidence: 73%

Vanadyl Phthalocyanine Films and Their Hybrid Structures with Pd Nanoparticles: Structure and Sensing Properties

Klyamer

Sukhikh

Николаева

et al. 2020

Sensors

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“…(a) XRD patterns, (b) SEM, and (c) TEM images of Pt‐decorated SnO 2 nanorods 28 . Reproduced with permission 28 …”

Section: Nanostructured Sensorsmentioning

confidence: 99%

On‐Site Detection for Hazardous Materials in Chemical Accidents

Kim

Joo

2020

Bulletin Korean Chem Soc

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Chemical accidents, such as fire, explosion, and leakages, not only cause damage to humans but also have a harmful impact on the environment. In modern industrialization period, researchers have been attracted by the elaboration of novel detection platforms that have been widely adopted for monitoring and the early warning of the risk of hazardous chemicals including hydrogen fluoride, hydrogen chloride, nitric acid, ammonia, hydrogen peroxide, chlorine gas, formaldehyde, aromatic compounds such as benzene‐toluene‐xylene, and heavy metals. This review explores novel sensor platforms based on novel materials including plasmonic metals, transition metal oxides, and composites. Due to the unique optical, spectroscopic, electrical, and physicochemical properties of materials, the development of functional materials‐based sensors significantly augments the current outlook on reducing the risk of hazardous chemical accidents to ensure security for humans and the environment.

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“…[1][2][3] With the rise of nanotechnology, lowdimensional structures have enormous potential applications in electronics and optoelectronics. [4][5][6][7][8][9][10][11] For example, recently proposed two-dimensional and nanowire arrays materials have peculiar magnetic and optical properties, providing novel possibilities for traditional electronic devices. [12][13][14][15][16] We have put the focus on the potential properties of these new materials.…”

Section: Introductionmentioning

confidence: 99%

“…GaN photocathode can be applied to the field of high‐density spin‐polarized electronic sources due to its unique quantum efficiency (QE), small dark current, and high polarization . With the rise of nanotechnology, low‐dimensional structures have enormous potential applications in electronics and optoelectronics . For example, recently proposed two‐dimensional and nanowire arrays materials have peculiar magnetic and optical properties, providing novel possibilities for traditional electronic devices .…”

Section: Introductionmentioning

confidence: 99%

Comparison of quantum and collection efficiency of field‐assisted uniform‐doping and exponential‐doping GaN nanowire cathodes

Liu

2020

Int J Energy Res

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Summary The field‐assisted method is proposed to increase electron capture of the GaN nanowire cathode. We deduce the photoemission or electron collection efficiencies of the field‐assisted uniform‐doping and exponential‐doping cathodes using the diffusion‐drift formula. Results show that the external electric field has a significantly better collection efficiency for uniform‐doping nanowire cathodes than that of exponential‐doping. In cathodes without a build‐in field, quantum efficiency and collection efficiency reached a maximum at incident angles of 65° and 45°, and field intensity of 0.1 and 0.7 V/μm, respectively. The external electric field also contributes to the polarization of GaN nanowires. The field‐assisted GaN NWAs (nanowirearray) cathode could improve the photoemission performance and are expected to be realized in the follow‐up experiment.

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Hydrogen sensors based on Pt-decorated SnO2 nanorods with fast and sensitive room-temperature sensing performance

Cited by 43 publications

References 39 publications

Vanadyl Phthalocyanine Films and Their Hybrid Structures with Pd Nanoparticles: Structure and Sensing Properties

Vanadyl Phthalocyanine Films and Their Hybrid Structures with Pd Nanoparticles: Structure and Sensing Properties

On‐Site Detection for Hazardous Materials in Chemical Accidents

Comparison of quantum and collection efficiency of field‐assisted uniform‐doping and exponential‐doping GaN nanowire cathodes

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