Controlled synthesis of porous Ni-doped SnO2 microstructures and their enhanced gas sensing properties

Gu, Cuiping; Guan, Wenmei; Liu, Xiaosi; Gao, Lvlv; Wang, Liyou; Shim, Jae‐Jin; Huang, Jiarui

doi:10.1016/j.jallcom.2016.09.103

Cited by 62 publications

(15 citation statements)

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“…In this work, NiO-decorated SnO 2 sensors show a strong catalytic capacity to ethanol at 260 °C, which requires further discussion 34 . In addition, NiO could act as a catalyst to facilitate the oxidation reaction on the surface of SnO 2 nanosheets 23,33 . The amount of oxygen adsorbed on NiO is markedly larger than that of SnO 2 due to charge compensation through the oxidation of Ni 2+ to Ni 3+ 26 .…”

Section: Resultsmentioning

confidence: 99%

“…The ultrafine NiO/SnO 2 nanoparticles obtained by thermal treatment of the precursor exhibited a fast sensing process with a response and recovery period of 2 s and 3 s, respectively 5 . The 3D structures of Ni-doped SnO 2 , such as hollow spheres 22 , microflowers 20 , or other hierarchical nanostructures 23 , were produced by the hydrothermal method or chemical solution route, which successfully improved the response with excellent selectivity for ethanol detection. To date, ethanol testing is needed not only for drunk driving and alcohol brewing but also for the production of biochemical products.…”

Section: Introductionmentioning

confidence: 99%

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NiO nanoparticle-decorated SnO2 nanosheets for ethanol sensing with enhanced moisture resistance

et al. 2019

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In a high relative humidity (RH) environment, it is challenging for ethanol sensors to maintain a high response and excellent selectivity. Herein, tetragonal rutile SnO 2 nanosheets decorated with NiO nanoparticles were synthesized by a two-step hydrothermal process. The NiO-decorated SnO 2 nanosheet-based sensors displayed a significantly improved sensitivity and excellent selectivity to ethanol gas. For example, the 3 mol% NiO-decorated SnO 2 (SnO 2 -3Ni) sensor reached its highest response (153 at 100 ppm) at an operating temperature of 260 °C. Moreover, the SnO 2 -3Ni sensor had substantially improved moisture resistance. The excellent properties of the sensors can be attributed to the uniform dispersion of the NiO nanoparticles on the surface of the SnO 2 nanosheets and the formation of NiO-SnO 2 p–n heterojunctions. Considering the long-term stability and reproducibility of these sensors, our study suggests that the NiO nanoparticle-decorated SnO 2 nanosheets are a promising material for highly efficient detection of ethanol.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

NiO nanoparticle-decorated SnO2 nanosheets for ethanol sensing with enhanced moisture resistance

et al. 2019

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“…Due to the improvement of people's life, it is significant to monitor toxic and harmful gases timely and effectively. In recent years, metal oxide semiconductors such as ZnO,, SnO 2 ,, In 2 O 3 ,, WO 3 ,, NiO, Co 3 O 4 , etc. have been widely used for gas monitoring because of their high response, simple synthesis and low cost.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Trimethylamine Sensing Performance of PdO‐Decorated ZnO Flower‐Like Structures Synthesized by One‐ Step Hydrothermal Method

et al. 2019

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ZnO and PdO‐decorated ZnO flower‐like structures have been synthesized using a facile one‐step hydrothermal method followed by subsequent calcination. Then, their structural information and trimethylamine (TMA) sensing performance were investigated. The results exhibited that the diameter of these ZnO flower‐like structures was in the range of 3–7 μm. Its morphology was maintained after introducing PdO nanoparticales. By comparing the sensing properties, it is found that sensors based on PdO‐decorated ZnO flower‐like structures showed higher TMA response than that of pure one. Especially, the sensor fabricated by 1 mol% PdO‐decorated ZnO flower‐like structures displayed superior gas sensing performances including high response, rapid response/recover characteristics, good stability, and high selectivity. Such a superior sensing performance is mainly due to the chemical and electrical sensitization of PdO nanoparticles. This simple synthesis strategy and a desirable TMA sensing performance could be broadly developed other metallic doped metal oxide flower‐like structures as high performance sensing materials.

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“…Formaldehyde is a typical toxic gas in indoor air pollution, which is often used in the manufacture of building plywood, paint, and other decorative building materials [ 1 , 2 , 3 ]. Besides, it is considered as a typical toxic chemical substance in environmental monitoring and assessment, which endangers the health and safety of humans and other creatures [ 4 , 5 , 6 ]. The most common symptoms associated with formaldehyde exposure include eye, nose, and throat irritation, which occurs when the air concentration is about 0.4–1 (ppm).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of SnO₂ nanoparticles for formaldehyde detection with high sensitivity and good selectivity

Gao

Zhu

et al. 2020

J. Mater. Res.

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Controlled synthesis of porous Ni-doped SnO2 microstructures and their enhanced gas sensing properties

Cited by 62 publications

References 62 publications

NiO nanoparticle-decorated SnO2 nanosheets for ethanol sensing with enhanced moisture resistance

NiO nanoparticle-decorated SnO2 nanosheets for ethanol sensing with enhanced moisture resistance

Investigation on Trimethylamine Sensing Performance of PdO‐Decorated ZnO Flower‐Like Structures Synthesized by One‐ Step Hydrothermal Method

Synthesis of SnO₂ nanoparticles for formaldehyde detection with high sensitivity and good selectivity

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Controlled synthesis of porous Ni-doped SnO2 microstructures and their enhanced gas sensing properties

Cited by 62 publications

References 62 publications

NiO nanoparticle-decorated SnO2 nanosheets for ethanol sensing with enhanced moisture resistance

NiO nanoparticle-decorated SnO2 nanosheets for ethanol sensing with enhanced moisture resistance

Investigation on Trimethylamine Sensing Performance of PdO‐Decorated ZnO Flower‐Like Structures Synthesized by One‐ Step Hydrothermal Method

Synthesis of SnO2 nanoparticles for formaldehyde detection with high sensitivity and good selectivity

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Synthesis of SnO₂ nanoparticles for formaldehyde detection with high sensitivity and good selectivity