Photocatalytic degradation and gas-sensing properties of hydrothermally synthesized (ZnO)X/(NiO)1−X incorporated with a functionalized graphene oxide
Source abstract
Abstract
This study reports the synthesis of ternary graphene oxide-functionalized (ZnO)1−x(NiO)xnanocomposite using a facile hydrothermal technique. Cubic NiO and hexagonal wurtzite ZnO structural phases were gotten, while the percentage compositions were verified using theoretical Rietveld analysis. Field emission scanning electron microscopy (FESEM) showed the morphologies, while EDX studies confirmed the varying compositions. UV–Vis spectroscopy revealed varied bandgaps between 1.9 eV and 3.4 eV, while the Raman studies showed characteristic D and G peaks centered at ∼ 1100 and ∼ 1600 cm−1belonging to the constituent elemental modes. PL spectroscopy confirmed the presence of GO and the composite oxides. Using selected CO, H2S, LPG, NH3, and Cl2gases, varying performances with high sensitivity were obtained. The photocatalytic degradation after 90 min gave 88.5%, 90.4%, and 94.3% for the GOZnO0.8NiO0.2, GOZnO0.5NiO0.5, and GOZnO0.2NiO0.8composites, respectively.Graphical abstractHydrothermal synthesis and characterizations of functionalized (ZnO)X/(NiO)1−Xcomposites
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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