Reduced graphene oxide anchored with zinc oxide nanoparticles with enhanced photocatalytic activity and gas sensing properties

Abstract

Reduced graphene oxide (rGO)–zinc oxide (ZnO) composites were synthesized by a two-step hydrolysis–calcination method, using GO and Zn(Ac)2 as precursors.

Enhanced visible light-driven photocatalytic performance of ZnO–g-C3N4 coupled with graphene oxide as a novel ternary nanocomposite

“…Furthermore, the formation of an interface between GO and the semiconductor can help the photo-induced charge carriers to migrate to the GO surface, facilitating reactions that increase photocatalytic performance [16,17]. It has been well reported [18][19][20][21][22][23][24][25][26][27][28][29] that GO supported ZnO composites exhibit improved photocatalytic activity due to the remarkable photophysical properties of GO.…”

“…ZnO/GO composites have been prepared by many methods, including the sol-gel, facile solvothermal, hydrothermal, hydrolysis-calcination, ultra-sonic, UV-assisted photocatalytic, self-assembly-photoreduction, thermal, etc [18][19][20][21][22][23][24][25][26][27][28][29]. However, it is a challenge to prepare ZnO/GO based ternary composites by facile and efficient method.…”

“…As the reviewer suggested, the studies on the preparation and photocatalytic activity of GO/ZnO photocatalysts is included in the text in page 3 and line 7-14 as follows "It has been well reported [18][19][20][21][22][23][24][25][26][27][28][29] that GO supported ZnO composites exhibit improved photocatalytic activity due to the remarkable photophysical properties of GO. ZnO/GO composites have been prepared by many methods, including the sol-gel, facile solvothermal, hydrothermal, hydrolysis-calcination, ultra-sonic, UV-assisted photocatalytic, self-assembly-photoreduction, thermal, etc [18][19][20][21][22][23][24][25][26][27][28][29].…”

Reduced graphene oxide/hierarchical flower-like zinc oxide hybrid films for room temperature formaldehyde detection

“…For rGO based composite films, rGO/zinc oxide (ZnO) composite films have attracted more and more attention due to the sensitive properties of ZnO [5]. In rGO/ZnO composite films, different ZnO materials, such as ZnO film [10], ZnO nanorods [7,11], ZnO nanoparticles [12,13] and ZnO nanowires [14] have been adopted to fabricate rGO/ZnO composite films and obtain the enhanced gas sensing properties. In recent years, hierarchical metal oxide architectures have stimulated great interest due to its exceptional physical and chemical properties and have been proved to show better sensing properties than the mono-morphological metal oxide nanostructures [15][16][17][18].…”

Morphological tuned preparation of zinc oxide: reduced graphene oxide composites for non-enzymatic fluorescence glucose sensing and enhanced photocatalysis

“…Moreover, the photogenerated holes absorbed by defects react with dye molecules (electron donor) and the photocatalytic reaction is greatly facilitated [28,29]. Few attempts have been demonstrated to improve the photocatalytic activity of metal oxides by monitoring the various parameters such as grain size, surface area, oxygen defects, aspect ratio and facets [18,[30][31][32][33][34].…”