ZnO/Ag2ZrO3 nanocomposites: A tailored nanostructure for enhanced supercapacitor, photocatalytic & antimicrobial applications
Source abstract
Abstract
The present study reported the synthesis of a novel ZnO/Ag 2ZrO 3 nanocomposite by a two-step method, involving hydrothermal synthesis followed by a co-precipitation method. As synthesized ZnO/Ag 2ZrO 3 nanocomposite was further used for the supercapacitor study, photocatalytic dye degradation, and antimicrobial applications. It was fairly challenging to enhance the supercapacitor performances of ZnO. Therefore, it was imperative to develop a novel approach utilizing a binary nanostructure composed of ZnO and Ag 2ZrO 3. This strategy aims to synergistically enhance the energy storage and conversion capabilities of inorganic materials, while simultaneously augmenting the photocatalytic and antimicrobial activity in the synthesized ZnO/Ag 2ZrO 3 nanocomposites. Among ZnO, Ag 2ZrO 3, and ZnO/Ag 2ZrO 3 nanocomposites with a varying weight percentage of Ag 2ZrO 3 (10 %, 20 %, 30 %, & 40 %), the ZnO/Ag 2ZrO 3 (20 %) electrode exhibited the highest specific capacitance (463.3 Fg –1) and energy density (10.2 Whkg –1) at current density 1 mAcm –2. Furthermore, we examined the photocatalytic activity, in the presence of persulfate ion (PS), the ZnO/Ag 2ZrO 3 (20 %) nanocomposite demonstrated superior degradation efficiency for Rhodamine B (RhB), Methyl Orange (MO), and Methylene Blue (MB). Almost 100 % degradation of RhB was observed in just 120 min of visible light irradiation, whereas only 27.6 %, 62.4 %, and 42.7 % of RhB degradation was observed on the pristine ZnO, ZnO/PS, and ZnO/Ag 2ZrO 3 (20 %) materials, respectively. This enhanced photocatalytic activity was attributed to the synergetic effect of photoinduced electron activating PS ions to form sulfate radicals ( ˙SO 4̄), higher visible light harvesting by ZnO/Ag 2ZrO 3 nanocomposite, and better charge separation. Five cycles of reusability test with no significant loss in dye degradation efficiency, confirms the stability test of ZnO/Ag 2ZrO 3 (20 %) nanocomposite. Moreover, the synthesized ZnO/Ag 2ZrO 3 (20 %) nanocomposite possesses improved antimicrobial potential against both gram +ve and gram -ve bacteria.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Advanced Photocatalysis Techniques · Nanomaterials for catalytic reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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