Metal Oxide Nanomaterials

Abstract

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NiO-based nanostructures with efficient optical and electrochemical properties for high-performance nanofluids

“…Nickel oxide (NiO; also known as bunsenite in its mineralogical form) has been one of the most sought-after transition metal oxides for its existing and potential set of applications. As a 3d transition metal oxide with a wide band gap of 3.6-4.2 eV [14,15], NiO has been utilized as reaction catalyst [16][17][18], photocatalyst [19], batteries [20], sensor [21][22][23] and electrochromic material [24], and has engaging properties such as transparent conduction [25], magnetism [26,27] and resistance switching [28,29] which renders this material suitable for spintronic devices and resistive random access memories (RRAMs). Over the last decade, like many other attractive nanomaterials, the focus for potential application for NiO nanoparticles has shifted towards energy-related research activities.…”

“…With the ever-increasing demand for sustainable energy storage and transmission due to the constant onslaught of technological advancement coupled with increasingly commodious lifestyle, it has been a prerogative for the researchers to look for alternative tools capable of efficient energy storage and smooth transmission of the same. Electrochemical capacitors are being viewed as the perfect alternative to currently used rechargeable batteries which suffer from a slower power delivery or uptake and short life cycle [14,30]. Various metal oxides and their composites have been investigated for electrochemical performance with varying degrees of success.…”

“…Materials such as MnO 2 [31,32], Co 3 O 4 [33,34] and RuO 2 [35][36][37] have previously been reported to show excellent electrochemical behaviour and potential candidates for this application. But industrial application of these materials has practical bottlenecks such as high processing costs, narrow operating voltage and toxicity [14]. NiO has been investigated as an alternative to these materials because of its environmental benignity, cost effectiveness and high pseudocapacitive behaviour.…”

Influence of the Microwaves on the Sol-Gel Syntheses and on the Properties of the Resulting Oxide Nanostructures

“…Among the most studied branches of nanostructures are metal oxides, with representatives such as TiO 2 , ZnO, CuO, Fe 3 O 4 , WO 3 , Cr 2 O 3 , Co 3 O 4 [6].…”

Studying the Effects of Cu Doping on Structure and Photoluminescence Properties of SnO2 Nanoparticle with Its Effectiveness towards the Mineralization of Toxic Industrial Dye

“…Eminence of semiconducting nanomaterials with wide band gap has triggered an extensive study on their structural, optical, electrical and magnetic properties. 1,2 Metal oxide semiconductors like tin oxide (SnO 2 ) have been under intense investigation due to their distinctive physical, chemical and catalytic properties. 2,3 SnO 2 is an interesting material with unique attributes such as; high electrical conductivity, high optical transparency to visible light, high chemical and thermal stability.…”