Aluminium-doped zinc oxide films prepared by an inorganic sol–gel route

Silva, Rodrigo F.; Zaniquelli, Maria Elisabete Darbello

doi:10.1016/s0040-6090(03)01405-6

Cited by 22 publications

(8 citation statements)

References 32 publications

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“…The peak at 274 C and 365 C may be assigned to the elimination of free-and chelated diethanolamine, respectively. 23,25 Finally, a transition observed at 454 C is suggested to be due to the formation of ZnO. 5,18,26 A DSC scan of the same material (in the second cycle) did not show any peaks indicating the formation of a thermally stable material as expected.…”

mentioning

confidence: 62%

High performance ZnO varistors prepared from nanocrystalline precursors for miniaturised electronic devices

Pillai

Kelly

McCormack³

et al. 2008

J. Mater. Chem.

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An industrially viable solution-based processing route using minimal amounts of solvent has been used to prepare bulk quantity nanopowders (average particle size 15 AE 3 nm) for the fabrication of ZnO varistors. The xerogels, calcined powders and sintered materials were fully characterised. The preparation of varistors from nanopowders has been optimised by studying the effect of temperature on grain growth, densification and breakdown voltage. The varistors are prepared by sintering at 1050 C for 2 hours, a temperature that is significantly lower than that used in the current industrial process. Highly dense varistor discs prepared from the sintered material produce devices, with a breakdown voltage 85% higher than that of commercial varistors, making them suitable for use in miniaturised electronic circuitry. Improved performance of these materials has been attributed to the small grain size and better dispersion of additives on ZnO grains.

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mentioning

confidence: 62%

High performance ZnO varistors prepared from nanocrystalline precursors for miniaturised electronic devices

Pillai

Kelly

McCormack³

et al. 2008

J. Mater. Chem.

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“…For this, the sol -gel technique [9] is used as well established method for preparation of inorganic coatings. UV absorbing inorganic coatings can be realized by a sol -gel process using ZnO [10], TiO 2 [11,12], or mixed oxide layers of SiO 2 /TiO 2 [13,14]. Nevertheless, in all these cases, an unwanted high transmission in the near UV region can not be avoided, see e.g.…”

Section: Introductionmentioning

confidence: 99%

Optimized UV protecting coatings by combination of organic and inorganic UV absorbers

Mahltig

Böttcher

Rauch³

et al. 2005

Thin Solid Films

165

101

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“…In the feed and product samples, peak at 3430 cm −1 is corresponding to the O―H stretching vibration. Thus from the FTIR analysis of the feed glass and the HGMs samples, it can be confirmed that the zinc acetate impregnated in the feed glass sample has been decomposed to zinc oxide at high temperature spheroidization .…”

Section: Resultsmentioning

confidence: 77%

Fabrication of zinc-loaded hollow glass microspheres (HGMs) for hydrogen storage

Dalai

Vijayalakshmi

Shrivastava

et al. 2015

Int. J. Energy Res.

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The greatest challenge for a feasible hydrogen economy lies on the production of pure hydrogen and the materials for its storage with controlled release at ambient conditions. Hydrogen with its great abundance, high energy density and clean exhaust is a promising candidate to meet the current global challenges of fossil fuel depletion and green house gases emissions. Extensive research on hollow glass microspheres (HGMs) for hydrogen storage is being carried out world-wide, but the right material for hydrogen storage is yet underway. But many other characteristics, such as the poor thermal conductivity etc. of the HGMs, restrict the hydrogen storage capacity. In this work, we have attempted to increase the thermal conductivity of HGMs by ZnO doping. The HGMs with Zn weight percentage from 0 to 10 were prepared by flame spheroidization of amber-colored glass powder impregnated with the required amount of zinc acetate. The prepared HGMs samples were characterized using field emission-scanning electron microscope (FE-SEM), environmental SEM (ESEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy and X-ray diffraction (XRD) techniques. The deposition of ZnO on the microsphere walls was observed using FE-SEM, ESEM and HRTEM which was further confirmed using the XRD and ultraviolet-visible absorption data. The hydrogen storage studies done on these samples at 200°C and 10-bar pressure for 5 h showed that the hydrogen storage increased when the Zn percentage in the sample increased from 0 to 2%. The percentage of zinc beyond 2, in the microspheres, showed a decline in the hydrogen storage capacity. The closure of the nanopores due to the ZnO nanocrystal deposition on the microsphere surface reduced the hydrogen storage capacity. The hydrogen storage capacity of HAZn2 was found 3.26 wt% for 10-bar pressure at 200°C.

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Aluminium-doped zinc oxide films prepared by an inorganic sol–gel route

Cited by 22 publications

References 32 publications

High performance ZnO varistors prepared from nanocrystalline precursors for miniaturised electronic devices

High performance ZnO varistors prepared from nanocrystalline precursors for miniaturised electronic devices

Optimized UV protecting coatings by combination of organic and inorganic UV absorbers

Fabrication of zinc-loaded hollow glass microspheres (HGMs) for hydrogen storage

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