scholarly journals Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors

RSC Advances ◽  
2020 ◽  
Vol 10 (30) ◽  
pp. 17713-17723
Author(s):  
Tran Thi Ngoc Hoa ◽  
Nguyen Van Duy ◽  
Chu Manh Hung ◽  
Nguyen Van Hieu ◽  
Ho Huu Hau ◽  
...  
Keyword(s):  
Gas Sensors ◽  
High Performance ◽  
Dip Coating ◽  
Sno2 Nanowires ◽  
Coating Method ◽  
On Chip ◽  
Dip Coating Method ◽  
Ag2o Nanoparticles ◽  
Sensing Performance

Ag2O nanoparticles decorated on the surface of on-chip growth SnO2 nanowires by a dip-coating method possessed excellent sensing performance for H2S gas.

Effect of Ions Substitution on Nanospace La-Fe-O Catalytic Properties for Simultaneous Removal of NOx and Soot

2013 ◽  
Vol 740 ◽  
pp. 565-569
Author(s):  
Xiao Xiao Meng ◽  
Mao Xiang Jing ◽  
Feng Lin He ◽  
Xiang Qian Shen
Keyword(s):  
High Performance ◽  
Catalytic Properties ◽  
Catalytic Performance ◽  
Dip Coating ◽  
Exhaust Emission ◽  
Simultaneous Removal ◽  
Microstructural Characteristics ◽  
Coating Method ◽  
Citrate Gel Process ◽  
Dip Coating Method

The catalysts La0.8K0.2FeO3(LKFO), La0.8K0.2Fe0.7Mn0.3O3(LKFMO) and La0.8K0.2Fe0.67Mn0.3Pt0.03O3(LKFMPO) were prepared by the citrate-gel process and the catalyst-coated honeycomb ceramic devices were prepared by the citrate-gel assisted dip-coating method. All the catalysts have a high performance on the simultaneous removal of NOxand soot at a temperature range of 200 to 400°C under the practical diesel exhaust emission. The obvious catalytic improvement is largely due to the effects of ions substitution, pore structure and microstructural characteristics of the catalysts. The catalytic performance order is LKFMPO > LKFMO > LKFO. Among them the LKFMPO catalyst shows the best catalytic properties, especially in the removal of NOx, with a maximum conversion rate of NOx(21.2%).

scholarly journals Wearable piezoresistive strain sensor based on graphene-coated three-dimensional micro-porous PDMS sponge

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Young Jung ◽  
Kyungkuk Jung ◽  
Byunggeon Park ◽  
Jaehyuk Choi ◽  
Donghwan Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Three Dimensional ◽  
Strain Sensor ◽  
Cost Effective ◽  
Dip Coating ◽  
Strain Sensors ◽  
Effective Manner ◽  
Coating Method ◽  
Dip Coating Method ◽  
Sensing Performance

Abstract We present a highly elastic and wearable piezoresistive strain sensor based on three-dimensional, micro-porous graphene-coated polydimethylsiloxane (PDMS) sponge suitable for being attached on human skin. The proposed strain sensors are simply fabricated by a sugar templating process and dip coating method based graphene ink in a facile and cost effective manner. The fabricated graphene-coated PDMS sponge shows highly stable mechanical properties in various tensile stress–strain test. A graphene thin film coated onto the backbone of PDMS sponges is used as the sensing materials of piezoresisitve strain sensors. The changes in resistance of the devices are highly stable, repeatable, and reversible when various strain is applied. Furthermore, the strain sensors show excellent sensing performance under different strain rate and mechanically robustness enough to be worked stably under repeated loads without any degradation.

Ultrasensitive and highly repeatable pen ink decorated cuprammonium rayon (cupra) fabrics for multifunctional sensors

2018 ◽  
Vol 6 (34) ◽  
pp. 16556-16565 ◽  
Author(s):  
Siyi Bi ◽  
Lei Hou ◽  
Hang Zhao ◽  
Lin Zhu ◽  
Yinxiang Lu
Keyword(s):  
Dip Coating ◽  
Coating Method ◽  
Liquid Sensing ◽  
Dip Coating Method ◽  
Sensing Performance

Flexible pen ink/cupra fabrics (PCFs) innovatively prepared by a dip-coating method exhibit ultrasensitive and highly repeatable strain/liquid sensing performance.

Preparation and application of flat-plate ceramic ultrafiltration membrane with high-performance by spray-dip coating method

2021 ◽  
Vol 225 ◽  
pp. 11-17
Author(s):  
Yahui Zhao ◽  
Yulong Yang ◽  
Qibing Chang ◽  
Zhiwen Hu ◽  
Xiaozhen Zhang
Keyword(s):  
Flat Plate ◽  
High Performance ◽  
Dip Coating ◽  
Ultrafiltration Membrane ◽  
Coating Method ◽  
Dip Coating Method

High-performance zeolite T membrane for dehydration of organics by a new varying temperature hot-dip coating method

AIChE Journal ◽  
2012 ◽  
Vol 59 (3) ◽  
pp. 936-947 ◽  
Author(s):  
Xiaoxia Chen ◽  
Jinqu Wang ◽  
Dehong Yin ◽  
Jianhua Yang ◽  
Jinming Lu ◽  
...  
Keyword(s):  
High Performance ◽  
Dip Coating ◽  
Coating Method ◽  
Dip Coating Method

Dip-coated colloidal quantum-dot films for high-performance broadband photodetectors

2019 ◽  
Vol 7 (21) ◽  
pp. 6266-6272 ◽  
Author(s):  
Ting Shen ◽  
Jifeng Yuan ◽  
Xinhua Zhong ◽  
Jianjun Tian
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Dip Coating ◽  
Large Area ◽  
Coating Method ◽  
Colloidal Quantum Dot ◽  
Dip Coating Method

Homogeneous large-area QD films were obtained by a dip-coating method. Photodetectors assembled with these films possess excellent detectivity.

Precise Patterning of Single Crystal Arrays of Organic Semiconductors by Patterned Microchannel Dip-coating Method for Organic Field-Effect Transistors

2021 ◽  
Author(s):  
Chaoqiang Wang ◽  
Zhengjun Lu ◽  
Wei Deng ◽  
Wanqin Zhao ◽  
Bei Lu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Dip Coating ◽  
Organic Field Effect Transistors ◽  
Coating Method ◽  
Dip Coating Method

Control over the growth location and orientation of organic semiconductor single crystals (OSSCs) is of key importance to enable high-performance organic circuits. However, the previous approaches are difficult to create...

Gas Sensing Performance of Macroporous SnO2 Thin Film Prepared by Using Carbonaceous Polysaccharide Microspheres as Pore-Forming Agent

2013 ◽  
Vol 543 ◽  
pp. 121-124 ◽  
Author(s):  
Dong Xiang Zhou ◽  
Lu Gan ◽  
Qiu Yun Fu ◽  
Shu Ping Gong ◽  
Huan Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Sensing ◽  
Sol Gel ◽  
Dip Coating ◽  
Carbon Microspheres ◽  
X Ray Diffraction ◽  
Interdigital Electrodes ◽  
Coating Method ◽  
Dip Coating Method ◽  
Sensing Performance

The macroporous SnO2thin film has been successfully prepared on alumina substrate with printed Ag interdigital electrodes by sol-gel dip-coating method. The carbonaceous polysaccharide microspheres synthesized by hydrothermal method were used as pore-forming agent. The SnO2thin film prepared without using carbon microspheres was also synthesized for comparison. X-ray diffraction and scanning electron microscopy were taken to study the micro-characteristics of samples. The influences of operating temperature, gas concentration and structure feature on the H2S sensing performance of SnO2thin film samples were systematically studied. Compared with SnO2thin film prepared without using carbon microspheres, the macroporous SnO2thin film showed a considerably reduced recovery time and good response-recovery properties.

scholarly journals Nanostructured SnO2–ZnO composite gas sensors for selective detection of carbon monoxide

2016 ◽  
Vol 7 ◽  
pp. 2045-2056 ◽  
Author(s):  
Paul Chesler ◽  
Cristian Hornoiu ◽  
Susana Mihaiu ◽  
Cristina Vladut ◽  
Jose Maria Calderon Moreno ◽  
...  
Keyword(s):  
Research Group ◽  
Gas Sensing ◽  
Porous Alumina ◽  
Sol Gel ◽  
High Sensitivity ◽  
Dip Coating ◽  
Sensor Response ◽  
Coating Method ◽  
Dip Coating Method ◽  
Sensing Performance

A series of SnO2–ZnO composite nanostructured (thin) films with different amounts of SnO2 (from 0 to 50 wt %) was prepared and deposited on a miniaturized porous alumina transducer using the sol–gel and dip coating method. The transducer, developed by our research group, contains Au interdigital electrodes on one side and a Pt heater on the other side. The sensing films were characterized using SEM and AFM techniques. Highly toxic and flammable gases (CO, CO2, CH4, and C3H8) were tested under lab conditions (carrier gas was dry air) using a special gas sensing cell developed by our research group. The gas concentrations varied between 5 and 2000 ppm and the optimum working temperatures were in the range of 210–300 °C. It was found that the sensing performance was influenced by the amount of oxide components present in the composite material. Improved sensing performance was achieved for the ZnO (98 wt %)–SnO2 (2 wt %) composite as compared to the sensors containing only the pristine oxides. The sensor response, cross-response and recovery characteristics of the analyzed materials are reported. The high sensitivity (R S = 1.21) to low amounts of CO (5 ppm) was reported for the sensor containing a composite sensitive film with ZnO (98 wt %)–SnO2 (2 wt %). This sensor response to CO was five times higher as compared to its response to CO2, CH4, and C3H8, thus the sensor is considered to be selective for CO under these test conditions.

scholarly journals TiO2 Thin Films Produced by Ultrasonic-Agitation Assisted Sol-Gel for Propane Gas Sensor

2021 ◽  
Author(s):  
Dwight Acosta-Najarro ◽  
Ismael A. Garduño-Wilches ◽  
Maria de la Luz Olvera ◽  
Arturo Maldonado
Keyword(s):  
Film Thickness ◽  
Gas Sensors ◽  
Anatase Phase ◽  
Sol Gel ◽  
Dip Coating ◽  
Tio2 Thin Films ◽  
Tio2 Anatase ◽  
Partial Pressures ◽  
Coating Method ◽  
Dip Coating Method

TiO2 films were deposited by the sol–gel dip coating method assisted by ultra sonic agitation, for their use as propane gas sensors. XRD anlaysis revealed the TiO2 anatase phase for all samples. The film thickness was controlled with the number of the dip-coating immersion cycles, obtaining thicknesses from 10 to 130 nm and a growing rate of 18 nm per immersion. Surface morphology shows that films grow more compact and densely packed as the number of immersion cycles increase. Gas sensing studies indicate that work temperatures above 300°C are needed for sensing activation of the films. Gas sensors sensitivity as a function of propane concentration and film thickness revealed a two-regime behavior: for partial pressures of propane above 400 ppm the sensitivity is not dependent of the film thickness, whereas it is dependent on this parameter at lower partial pressures. Such behavior is attributed to a space charge region and a change in surface structure. For the low concentration regime, the maximum sensitivity was obtained for a film thickness of 110 nm or 5 inmersions.

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