Fabrication of Mesostructured Cobalt Oxide Sensor and Its Application for CO Detector

Room-temperature selective epitaxial growth of CoO (1 1 1) and Co3O4 (1 1 1) thin films with atomic steps by pulsed laser deposition

“…Both CoO and Co 3 O 4 are known as direct transition p-type semiconductors [12,13], which are paramagnetic around room-temperature with band gaps of 2.2-2.8 eV and 1.4-1.8 eV [14,15], and Néel temperature T N of 291 K and 40 K, respectively. Recently, nanocrystalline CoO has been reported as a photocatalyst for water splitting by visible-light irradiation [16], and both CoO and Co 3 O 4 have potential applications in devices such as battery electrodes [17], gas sensors [15,[18][19][20], solar-selective absorbers [21] and spintronic devices through the formation of exchange bias layers [22]. Epitaxial thin films or layers of these cobalt oxides have been grown by several methods, including PLD [23][24][25], molecular beam epitaxy [26][27][28][29], atomic layer deposition [30][31][32], chemical vapor deposition [33], sol-gel [34], thermal evaporation [35], and surface oxidation of metallic cobalt [36,37].…”

Glycine-assisted preparation of Co3O4 nanoflakes with enhanced performance for non-enzymatic glucose sensing

“…4 However, cobalt oxide nanostructures are most heavily explored because of their high stability, antifouling properties, bio compatibility and excellent electro-catalytic potential of the redox couple, which are considered essential characteristics for the development of electrochemical sensors. At present, commodiously used synthesis strategies for cobalt oxide include electrodeposition, 5 hydrothermal, 6 solvothermal, 7 8 and thermal decomposition. 9 Since the electro-chemical behavior of metal oxides is also largely influenced by the structural shapes beside the diminutive size.…”

H2S and NH3 adsorption characteristics on CoO nanowire molecular device – A first-principles study

“…The recent advancement in nanomaterials makes nanoscale CoO as a promising material for gas sensing [11]. Moreover, the properties of CoO nanostructures depends on the morphology and their assembly [12]. Among the transition metal oxides, CoO can be finetuned for selectivity, sensitivity and stability towards the target gas [13].…”