Shape-controllable ZnO nanostructures based on synchronously electrochemically reduced graphene oxide and their morphology-dependent electrochemical performance

Graphene Oxide-Assisted Morphology and Structure of Electrodeposited ZnO Nanostructures

“…Zinc oxide (ZnO) is an n-type semiconductor highly employed in different devices, such as sensors, biosensor, solar cells, supercapacitor and catalysis fields [1][2][3][4] thanks to its interesting properties, including its wide band gap of 3.37 eV [4], resistivity control, high electrochemical stability, good electron transfer features and transparency in the visible wavelength region [1] in addition to being an abundant non-toxic and low-cost material.…”

“…It is well known that properties of materials at nano-scale are markedly dependent on their size, shape or morphology; thus, the control of features such as porosity, surface area or specific orientation has attracted much interest for improving the performance of ZnO-based devices [5]. In this respect, ZnO morphology is highly versatile as it encompasses nanorods, nanowires, nanotubes, nanowalls, nanocups nanobelts, nanorings, nanosprings, nanobowls, nanoflowers, nanohelices and nanoparticles [1,[6][7][8]. For example, Wang et al reported a novel and improved ethanol gas sensor based on electrodeposited flower-like ZnO microstructures [9], Psychoyios et al fabricated a ZnO-based potentiometric cholesterol biosensor with improved adsorption capability by improving the surface successfully applied to control the structure and orientation of ZnO electrodeposited nanostructures towards improving its performance in varying fields.…”

Bio-Sensing Applications of Graphene Based Composite Films

“…Various biologically-relevant substances/biomaterials such as DNA, blood sugar, other parameters and H 2 O 2 can be detected using Graphene and/ or its composite films [9][10][11][12][13][14][15]. We will discuss GCF based bio-sensors according to their sensing mechanism.…”

Diseño sostenible de materiales cerámicos multifuncionales para el suministro eléctrico de baja potencia.

“…El óxido de zinc (ZnO) es un semiconductor tipo n con un ancho de banda de 3.37 eV que presenta propiedades especiales como alta estabilidad electroquímica, buena transferencia de electrones y transparencia en la región del espectro visible (T. Yang et al, 2015). El ZnO puede ser sintetizado por el método de electrodeposición o depositado en forma de partículas por el método del Doctor Blade.…”

“…El óxido de grafeno (GO, graphene oxide) puede obtenerse mediante el método tradicional de Hummers (Hummers, W. S.;Offeman & E., 1957) y puede ser reducido química, electroquímica o térmicamente para obtener óxido de grafeno reducido (rGO) (Balis et al, 2016). Gracias a sus grupos funcionales, el GO puede actuar como agente estructural para el crecimiento del ZnO (T. Yang et al, 2015) y como aceptor de electrones para reducir la recombinación de pares electrón-hueco (Teh et al, 2016).…”