Fabrication of Nb-doped ZnO nanowall structure by RF magnetron sputter for enhanced gas-sensing properties

Kim, Seong-Hwan; Shim, Gyu-In

doi:10.1016/j.jallcom.2016.11.377

Cited by 36 publications

(13 citation statements)

References 49 publications

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“…Subsequently, materials with nanowalls were utilized in acetone sensory, which showed the unique advantages of wide surface area for volatile gas adsorption. Nb-doped ZnO nanowalls (synthesized by radio-frequency (RF) magnetron sputtering), CuO nanowalls (from Oxidation of Cu foil in aqueous NH 4 OH), NiO nanowalls (from chemical bath deposition (CBD), and ZnO deposited carbon nanowalls (from microwave plasma-enhanced chemical vapor deposition (MPECVD) were reported as acetone sensors with extensive selectivity [ 113 , 114 , 115 , 116 ]. Herein, Nb-doped ZnO nanowalls [ 113 ] operate at 200 °C and deliver a high response of 89.13 (for 100 ppm) with good linear response between 20 and 100 ppm.…”

Section: Diverse Nanostructures In Acetone Detectionmentioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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Environmental pollution related to volatile organic compounds (VOCs) has become a global issue which attracts intensive work towards their controlling and monitoring. To this direction various regulations and research towards VOCs detection have been laid down and conducted by many countries. Distinct devices are proposed to monitor the VOCs pollution. Among them, chemiresistor devices comprised of inorganic-semiconducting materials with diverse nanostructures are most attractive because they are cost-effective and eco-friendly. These diverse nanostructured materials-based devices are usually made up of nanoparticles, nanowires/rods, nanocrystals, nanotubes, nanocages, nanocubes, nanocomposites, etc. They can be employed in monitoring the VOCs present in the reliable sources. This review outlines the device-based VOC detection using diverse semiconducting-nanostructured materials and covers more than 340 references that have been published since 2016.

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Section: Diverse Nanostructures In Acetone Detectionmentioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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“…As a conventional approach for producing thin film and multiple layers of metals, metal alloys, and metal oxides the method still received significant studies until now [5][6][7][8][9][10][11][12][13][14][15][16]. To some extent, the technique has been also used for immobilizing nanoparticles (NPs) on a solid substrate [17][18][19][20][21][22], or decorating nanoparticles on other metal/oxides nano-micron particles as the supporters [23][24][25][26][27][28][29][30][31][32][33]. In order to have NPs instead of big aggregate or thin film very short sputtering time, that is in order of few to several tens of second [23,27], or low pressure [24,25,27] or post heat-treatment [29,30] has been used.…”

Section: Brief History and Background Of Sputtering Onto A Liquidmentioning

confidence: 99%

“…Thus, it is challenging to create conditions favourable for co-reduction and alloying rather than for heterogeneous structure formation. Sputtering techniques, on the other hand, can produce atoms or clusters of any metal at once by the physical bombardment of energetic gas ions onto metal targets [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. This can allow for the production of alloy NPs of various bimetallic systems.…”

Section: Brief History and Background Of Sputtering Onto A Liquidmentioning

confidence: 99%

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Nguyen

Yonezawa

2018

Science and Technology of Advanced Materials

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The young history of sputtering onto a liquid features great achievements in the green production of various metal and metal oxide nanoparticles (NPs) and nanoclusters (NCs). Studies on how the sputtering parameters affect the properties of NPs and NCs have elucidated their formation mechanism and marked a crucial role of liquid matrix in the nucleation and growth of particles, controlling their various properties. Current research has been devoted to making alloy bi-and trimetallic NPs with a high level of control over the NP structure, composition, and size via well-designed target systems, sputtering steps, and liquid matrix materials. In this minireview, we discuss the recent advances in the use of various types of targets to prepare different bi-and trimetallic NPs. In single target sputtering, systems with alternative configurations of metals, alloy targets, monometallic targets in sequence, and a combination of sputtering and chemical reactions have been developed. On the other hand, a double head system was introduced to widen the range of controllable sputtering parameters yielding more versatility in particle composition and fine structure. The synergistic and tuneable properties exhibited by the multi-metallic components in small NPs and NCs for their use in catalysis and optical applications are discussed.

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“…Currently, the industry produces sensors obtained using expensive methods and equipment to create and maintain a certain level of vacuum in the working chamber. The main one is the magnetron sputtering method [4,5]. Sol-gel technology methods, using both centrifugation and dipping operations to form gas-sensitive layers, are promising as an alternative to traditional methods [6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Gas-Sensitive Properties of Thin-Film Thermovoltaic Sensor Elements Based on Zinc Oxide

et al. 2019

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Systematic research on a new type of gas sensor devices based on the thermovoltaic effect in zinc oxide, inhomogeneously doped with impurities of variable valence, is presented in the article. The ZnO-ZnO-Me two-layer sandwich structure, in which the thermovoltaic effect is observed, is synthesized using sol-gel technology from sols by dissolving the inorganic zinc salt in alcohol and adding a surfactant, followed by the mixing and maturation of the sol. The lower layer of the nanostructure is formed from pure zinc oxide by immersing the substrate at 2 /3 length in sol and drying. The upper layer of zinc oxide doped with copper or iron is formed by two or three immersions of the other end of the substrate by 2 /3 length, followed by drying and annealing. It has been established that, based on the developed sensor device, it is possible to obtain an increased response to gas-analyzers (ethanol being an example). Author Contributions: Conceptualization, I.P. and V.M.; formal analysis, I.A. and V.M.; investigation, I.P. and N.Y.; methodology, D.D.; software, A.K.; visualization, A.K.

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Fabrication of Nb-doped ZnO nanowall structure by RF magnetron sputter for enhanced gas-sensing properties

Cited by 36 publications

References 49 publications

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Investigation of Gas-Sensitive Properties of Thin-Film Thermovoltaic Sensor Elements Based on Zinc Oxide

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