Enhanced TEA sensing properties of nest-like ZnO by decoration with Au

Tao, Zhenhua; Li, Yanwei; Sun, Guang; Xiao, Min

doi:10.1088/2053-1591/ab3d80

Cited by 5 publications

(2 citation statements)

References 40 publications

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“…Apart from the utilization of distinct nano-architectures, numerous diversified nano-shaped materials were employed in the quantitation of volatile organic amines. In view of this, ZnO/Au hemishperical nanostructure, SnO 2 /Au/Fe 2 O 3 nanoboxes, Au decorated ZnO nest-like nanostructure, Pd doped ZnO agaric like nanostructure, Co 3 O 4 @MnO 2 shish-kebab like nanostructure, and Au@ZnO core-shell nanostructure were demonstrated in TEA and aniline detection as noted in Table 4 [ 340 , 341 , 342 , 343 , 344 , 345 ]. In particular, Pd-doped ZnO agaric like nanostructure [ 343 ] was used in aniline sensing with a high response (R a /R g = 182 for 100 ppm at 280 °C; response/recovery time = 29 s/23 s) with a LOD of 0.5 ppm, thereby is noted as a distinct research.…”

Section: Various Nanostructures In Volatile Organic Amines Detectimentioning

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: Various Nanostructures In Volatile Organic Amines Detectimentioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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“…Various semiconducting metal oxides, such as zinc oxide (ZnO), tin oxide (SnO 2 ), tungsten oxide (WO 3 ), nickel oxide (NiO), titanium dioxide (TiO 2 ), and cobalt oxide (Co 3 O 4 ), have been employed as sensitive gas-sensing materials for the detection of various hazardous gases. − The low cost, wide abundance, high sensitivity, good thermal and chemical stabilities, and nontoxicity of ZnO have made it highly attractive for gas-sensing applications. − Furthermore, as a n-type semiconductor with a wide band gap of 3.37 eV and large exciton binding energy of 60 meV, the resistance of ZnO is strongly dependent on the chemisorbed oxygen ions on its surface. − To date, various ZnO nanoarchitectures ranging from 0D (e.g., nanoparticles and nanoclusters), 1D (e.g., nanowires, nanoneedles, and nanorods), 2D (e.g., nanosheets, nanoplates, and nanoflakes), and 3D (e.g., nest-like and wool ball-like structures) nanostructures have been reported. ,− Apart from shape control, ZnO-based nanostructures with various pore sizes, such as microporous, mesoporous, and macroporous ZnO, have also been synthesized to enhance the specific surface area . Among these, hierarchical ZnO nanostructures with mesoporous features have the advantages of high surface area and large pore volume due to their low density structure, which can promote high molecular transport to enhance the gas–surface interactions. − …”

Section: Introductionmentioning

confidence: 99%

Hollow Zinc Oxide Microsphere–Multiwalled Carbon Nanotube Composites for Selective Detection of Sulfur Dioxide

Septiani

Saputro

Kaneti

et al. 2020

ACS Appl. Nano Mater.

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This work reports the first utilization of anthocyanin extracted from black rice (Oryza sativa L.) grains as a structure-directing agent for the synthesis of hollow zinc oxide (ZnO) spheres via a simple solvothermal reaction and their subsequent modifications with various amounts of multiwalled carbon nanotubes (MWCNTs). Following hybridization with MWCNTs, some MWCNTs are observed to penetrate into the inner cavities of the spheres, while ZnO nanoparticles are formed on the surface of some MWCNTs. When employed as a sulfur dioxide (SO 2 ) sensor, the ZnO−MWCNT (15:1) composite displays a high response of 156 to 70 ppm of SO 2 at an optimum temperature of 300 °C as well as good selectivity to SO 2 with the response to 50 ppm of SO 2 gas being 3 times higher than those to other gases, such as CO, CO 2 , methanol, toluene, hexane, and xylene. Interestingly, the sensing behavior of this composite is strongly influenced by the proportion of MWCNTs. Specifically, n-type sensing behavior is observed for both ZnO−MWCNT (10:1) and (15:1) composites, while p-type behavior is observed for the ZnO−MWCNT (5:1) composite. The switch in sensing behavior suggests the major contribution of p-type MWCNTs to the electronic and sensing properties of the ZnO/MWCNT composites. The density functional theory (DFT) simulations on the adsorption of SO 2 on the ZnO/CNT system reveal that the SO 2 molecule only chemically interacts with the O adatom of ZnO (i.e., oxygen atom adsorbed on the surface of ZnO) to form sulfur trioxide (SO 3 ), and charge transfer is observed from ZnO to CNT, which enhances the change in resistance of the composite sensor upon exposure to SO 2 gas.

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MOF-5-derived ZnO nanochains: synthesis and ultrafast triethylamine sensing performance

Zhao

Wang

et al. 2021

J Mater Sci: Mater Electron

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Enhanced TEA sensing properties of nest-like ZnO by decoration with Au

Cited by 5 publications

References 40 publications

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Hollow Zinc Oxide Microsphere–Multiwalled Carbon Nanotube Composites for Selective Detection of Sulfur Dioxide

MOF-5-derived ZnO nanochains: synthesis and ultrafast triethylamine sensing performance

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