Photoelectrochemical properties of morphology controlled manganese, iron, nickel and copper oxides nanoball thin films deposited by electric field directed aerosol assisted chemical vapour deposition

H2O2-assisted photoelectrocatalytic degradation of Mitoxantrone using CuO nanostructured films: Identification of by-products and toxicity

“…Though it is rare, anodic photocurrent generation were reported by other workers (Yoon et al 2000;Chaudhary et al 2004;Naeem et al 2015). Naeem et al (2015) obtained anodic photocurrent for CuO films and observed that, with increasing applied potential, photocurrent density increases reaching 120 µA cm -2 at 0.7 V versus Ag/AgCl. Yoon et al (2000) investigated the PEC properties of CuO thin films on ntype silicon electrodes.…”

“…The highest photocurrent obtained for the CuO is in agreement with the impedance results. The lower value of Rct for the CuO film compared to Si results in an efficient charge transfer across the electrode-electrolyte interface, there by minimizing charge recombination and enhancing the photocurrent response (Naeem et al 2015).…”

Nanoscale Mn3O4 Thin Film Photoelectrodes Fabricated by a Vapor-Phase Route

“…Thin films and supported nanoarchitectures (nanowires, nanotubes, nanobelts, hierarchical structures, etc.) of transition metal oxides (TMOs) play an essential role in a plethora of advanced technological applications. − Relevant examples encompass gas sensors, fuel cells, electrolyzers, batteries and capacitors, recording media, electrochromic and photochromic coatings, heterogeneous catalysts, and many other end-uses requiring an immobilized functional material anchored on a suitable supporting medium. − ,,, Specifically, nanostructured TMOs have gained an increasing interest due to their size- and shape-dependent properties, high surface area and chemical reactivity, and short distances for mass and charge transport as well as tunable structural, optical, electrical, and magnetic characteristics. ,,− …”

“…In this context, manganese oxides (MnO x ) such as Mn 3 O 4 , Mn 2 O 3 , and MnO 2 have emerged as attractive candidates, especially for use in electrochemical and photoelectrochemical (PEC) devices, since their multitude of valence states and structures offer a very rich redox chemistry and widely diversified chemicophysical properties. ,,− Among the over 30 different crystal structures characterizing the Mn–O phase diagram, − hausmannite (α-Mn 3 O 4 ) is particularly appealing for (photo)­electrochemical applications. In fact, it possesses a normal spinel structure that favorably stabilizes a mixed Mn­(II)/Mn­(III) valence and contains Jahn–Teller tetragonally distorted Mn­(III) highly reactive centers with d 4 configuration. ,,,− In addition, hausmannite, featuring a good stability in aqueous solutions, is a direct band gap ( E G ) semiconductor with E G ≈ 2.5 eV, enabling the absorption of an appreciable fraction of visible light. ,,, These properties, combined with manganese large natural abundance, low cost, and nontoxicity, ,− make α-Mn 3 O 4 potentially intriguing for large-scale sunlight-assisted photoelectrochemical technologies.…”

Electric‐Field Aerosol‐Assisted CVD: Synthesis, Characterization, and Properties of Tin Oxide Microballs Prepared from a Single Source Precursor

“…The present synthetic strategy is mainly concerned with optimization of deposition conditions and to work out an easily adoptable and scalable synthesis of high surface area tin(IV) oxide mesoporous microballs using single source precursor [Sn (OAc)(dmae)] 2, 1, using an in house designed/built electric field directed aerosol assisted chemical vapour deposition (EFDAACVD) process . The tin oxide microballs synthesised by this technique have typical diameters ranging from 195‐632 nm and a well‐defined reproducible structures that contain nanosized pores in the exterior and interior surfaces in the size range of 56‐66 nm and 8‐160 nm, respectively.…”