Spindle-like Co3O4-ZnO Nanocomposites Scaffold for Hydrazine Sensing and Photocatalytic Degradation of Rhodamine B Dye
Ramesh Kumar, Ahmad Umar, Rajesh Kumar, M. S. Chauhan, Girish Kumar and Suvarcha Chauhan
1Government College, Rajgarh District, Sirmaur, Himachal Pradesh, 173101, India
2Department of Chemistry, Faculty of Science and Arts, Najran University, Najran, 11001, Kingdom of Saudi Arabia
3Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Kingdom of Saudi Arabia
4Department of Chemistry, JCDAV College Dasuya, Hoshiarpur, Panjab, 44205, India
5Department of Chemistry, Himachal Pradesh University, Gyan Path, Summer Hill, Shimla, 171005, India
Abstract
Spindle-like cobalt oxide (Co3O4)-zinc Oxide (ZnO) nanocomposites were synthesized by a facile low-temperature (~60 °C) solution process and well-characterized by several techniques which revealed the presence of Co3O4 along with ZnO in Spindle-like Co3O4-ZnO nanocomposites. The as-synthesized Spindle-like Co3O4-ZnO nanocomposites were analyzed for their photocatalytic and sensing properties. The photocatalytic degradation of the aqueous solution of Rhodamine B (RhB) was evaluated in the presence of Ultraviolet (UV) radiations. About 98% degradation of RhB was observed within just 50 min. The synthesized Co3O4-ZnO nanocomposites displayed prevalent photocatalytic behavior towards the photocatalytic dissociation of RhB under optimal experimental conditions than pure ZnO particles. The sensing studies were carried out by using Co3O4-ZnO nanocomposites modified gold electrode for hydrazine. The modified sensor exhibited good sensitivity of 23.15 µA µM−1cm−2and a low-detection limit of 0.05 µM with a short response time of 2 s for hydrazine. The improved photocatalytic and sensing activities of the Co3O4-ZnO nanocomposites toward photodegradation of RhB and sensing of hydrazine were credited to the associated effects of improved surface area and charge separation efficiencies.
Publication details
Received: 20 Sep 2021
Revised: 10 Oct 2021
Accepted: 10 Oct 2021
Published online: 12 Oct 2021
Article type:
Research Paper
DOI:
10.30919/es8d548
Volume:
16
Page:
288-300
Citation:
Engineered Science, 2021, 16, 288-300
Permissions:
Copyright
Number of downloads:
2680
Citation Information:
17
Description:
The work demonstrates the synthesis of Co3O4-doped ZnO nanospindles as a potential scaffold for hydr....
The work demonstrates the synthesis of Co3O4-doped ZnO nanospindles as a potential scaffold for hydrazine sensing and photocatalytic degradation of Rhodamine B dye applications.
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