Pd loaded spider-web TiO2 nanowires: Fabrication, characterization and gas sensing properties

Şennik, Erdem; Soysal, Ugur; Öztürk, Zafer Ziya

doi:10.1016/j.snb.2014.03.052

Cited by 36 publications

(15 citation statements)

References 31 publications

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“…The spectra show a small absorption band at 366 nm corresponding to the ground excitonic peak of ZnO . Presence of sharp peak centred at 270 nm corresponds to the n‐π* transition of PVA present in the electro‐spun nanofibers . For ZnO/Au heterostructured nanofibers, the excitonic peak of Zn−O was observed along with characteristic surface plasmon resonance peak (SPR) of Au nanograins centred at 534 nm .…”

Section: Resultsmentioning

confidence: 99%

Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO₂ Gas Sensing Properties

2018

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Novel nanograined ZnO/Au heterostructured nanofibers have been successfully prepared using two‐step process via electrospinning method followed by thermal oxidation and their surface bound NO2 sensing properties were analyzed. The ZnO/Au heterojunction nanofibers exhibited typical nanograined structure with 1D morphology consisting of two distinct lattice fringes with d spacing values of 0.14 ± 0.5 nm and 0.28 ± 0.5 nm corresponding to Au [111] and ZnO [101] respectively. Defects and surface bound properties were examined using Room temperature Photoluminescence (RTPL) spectroscopy, X‐ray photo‐electron spectroscopy (XPS) and X‐ray diffraction analysis. The existence of Au, Zn and O in 4 f, 2p and 1 s states and chemisorbed oxygen species on the surface were structurally confirmed after the careful evaluation and proves the purity of synthesis. NO2 gas sensor property analysis of ZnO/Au heterojunction nanofibers showed an extraordinary sensor response (S=98) and selectivity at a lower operating temperature of 350°C than pristine ZnO nanofibers (450 °C). The enhanced sensing behavior of the heterostructured nanofibers are ascribed to the synergetic effect of Au nanoclusters at the interface which act as spill‐over zone favoring physisorption and defect mediated sensing process.

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Section: Resultsmentioning

confidence: 99%

Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO₂ Gas Sensing Properties

2018

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“…Particularly, noble metals, such as Pd [30], Pt [31] and Au [32], are favored as catalysts, due to their high hydrogen chemisorption. Hence, the gas sensing properties of anodic TiO 2 layer prepared on insulating substrates can be enhanced by loading catalytic materials.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen sensor of Pd-decorated tubular TiO2 layer prepared by anodization with patterned electrodes on SiO2/Si substrate

Moon

Hedman

Kemell

et al. 2016

Sensors and Actuators B: Chemical

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“…As potential application areas; optoelectronic devices (solar cells [16], gas sensors [17]) metal-insulator-semiconductor (MIS)…”

Section: Introductionmentioning

confidence: 99%

Investigation of dielectric relaxation and ac electrical conductivity using impedance spectroscopy method in (AuZn)/TiO2/p-GaAs(110) schottky barrier diodes

Şafak-Asar

Asar

Altındal

et al. 2015

Journal of Alloys and Compounds

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Pd loaded spider-web TiO2 nanowires: Fabrication, characterization and gas sensing properties

Cited by 36 publications

References 31 publications

Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO₂ Gas Sensing Properties

Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO₂ Gas Sensing Properties

Hydrogen sensor of Pd-decorated tubular TiO2 layer prepared by anodization with patterned electrodes on SiO2/Si substrate

Investigation of dielectric relaxation and ac electrical conductivity using impedance spectroscopy method in (AuZn)/TiO2/p-GaAs(110) schottky barrier diodes

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Pd loaded spider-web TiO2 nanowires: Fabrication, characterization and gas sensing properties

Cited by 36 publications

References 31 publications

Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO2 Gas Sensing Properties

Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO2 Gas Sensing Properties

Hydrogen sensor of Pd-decorated tubular TiO2 layer prepared by anodization with patterned electrodes on SiO2/Si substrate

Investigation of dielectric relaxation and ac electrical conductivity using impedance spectroscopy method in (AuZn)/TiO2/p-GaAs(110) schottky barrier diodes

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Product

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Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO₂ Gas Sensing Properties

Novel Electro‐Spun Nanograined ZnO/Au Heterojunction Nanofibers and Their Ultrasensitive NO₂ Gas Sensing Properties