Matthew D. Femi, Agnes C. Nkele, Michael O. Nwakanma, Adil Alshoaibi, G. H. Jain, S. D. Shinde, B. A. Ezekoye, A. B. C. Ekwealor, S. M. Abhinay, G. E. Patil, Fabian I. Ezema
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The band gap energy values for the GOZnO<sub>0.6</sub>NiO<sub>0.4</sub> and GOZnO<sub>0.4</sub>NiO<sub>0.6</sub> composites are 3.0 eV and 3.4 eV, respectively with high absorbance properties. The functional groups and vibrational modes belonging to carbon, oxygen, nickel, zinc were shown in the FT-IR spectra. The gas sensing properties were tested with ethanol and Cl<sub>2</sub> at 100 ppm and 10 V; with the highest sensitivity recorded for Cl<sub>2</sub>. The synthesized ternary composite was highly effective in dye degradation with efficiency of over 85% and high photocatalytic activity performance. 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Photocatalytic and gas sensing applications of sol–gel processed GO/(ZnxNi1-x)O ternary composites
This research studies the effects of volume ratios on the properties of GO/(ZnxNi1-x)O ternary composite prepared by a sol–gel technique. The ratios were produced by keeping the volume of graphene oxide, GO constant whilst varying the volumes of zinc oxide, ZnO, and nickel oxide, NiO to produce the GO/ZnO0.4NiO0.6 and GO/ZnO0.6NiO0.4 nanocomposites. The structural, morphological, elemental, optical, gas sensing and photocatalytic properties of the synthesized nanocomposites have been investigated. EDS results confirmed the presence of graphene oxide, nickel oxide, and zinc oxide in the composite. The band gap energy values for the GOZnO0.6NiO0.4 and GOZnO0.4NiO0.6 composites are 3.0 eV and 3.4 eV, respectively with high absorbance properties. The functional groups and vibrational modes belonging to carbon, oxygen, nickel, zinc were shown in the FT-IR spectra. The gas sensing properties were tested with ethanol and Cl2 at 100 ppm and 10 V; with the highest sensitivity recorded for Cl2. The synthesized ternary composite was highly effective in dye degradation with efficiency of over 85% and high photocatalytic activity performance. Results from the characterization showed potential application of the composites in gas sensing and photocatalytic devices.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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