Error in Figures
In the original publication [1], there were mistakes in the Graphical Abstract, Figures 1 and 2, as published. The authors added the wrong SEM images to Figure 2 and, as a consequence, the SME images in Figure 1 and the Graphical Abstract were also incorrect. The corrected Graphical Abstract, Figure 1 and Figure 2 appear below.
Graphical Abstract
Figure 1.
Schematic illustration of the synthesis of Ag-doped@Co(OH)2@polypyrrole NSs.
Figure 2.
SEM images of the prepared Co(OH)2 nanoparticles (a–c), Ag-doped@Co(OH)2 nanoparticles (d–f), and Ag-doped@Co(OH)2@polypyrrole NSs (g–i).
In the original publication [1], there were mistakes in Figure 4. The XRD patterns were erroneously added to Figure 4. The corrected Figure 4 appears below.
Figure 4.
The XRD patterns for the electrode materials (a); the XPS survey spectrum (b) and the XPS spectra of Co 2p (c), O 1 s (d), and Ag 3d (e) of the Ag-doped@Co(OH)2@polypyrrole NSs.
Text Correction
There was an error in the original publication [1]. Following the above error in Figure 4, a correction has been made to Section 3, Results and Discussion, Paragraph 4.
“The structure and phase purity of the prepared Ag-doped@Co(OH)2 NPs and Ag-doped@Co(OH)2@polypyrrole NSs were studied using the XRD technique, and the recorded XRD patterns are depicted in Figure 4a. From these XRD patterns, the Co(OH)2 nanoparticles were shown to exhibit an amorphous behavior with very poor broad peaks at 2θ = 18°–35°. Contrastingly, the individual Ag-doped@Co(OH)2 nanoparticles appeared to have a hexagonal crystal phase of Co(OH)2 (JCPDS no. 30-0443) with diffraction angles of 19.4°, 32.6°, 37.8°, 57.7°, and 61.6° [34,35]. After developing Ag-doped particles onto the polypyrrole nanoparticles, the peaks of the Co(OH)2 crystalline phases could still be seen in the XRD observation. After wearable polypyrrole particles were added on to Ag-doped@Co(OH)2, new diffraction angles showing at 38.2°, 64.7°, and 77.54° matched well with the metallic cubic crystalline of Ag (JCPDS no. 65-2871) [36], proving the generation of PPy@Co(OH)2@Ag NSs.”
The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated.
Reference
- Arbi, H.M.; Yadav, A.A.; Anil Kumar, Y.; Moniruzzaman, M.; Alzahmi, S.; Obaidat, I.M. Polypyrrole-Assisted Ag Doping Strategy to Boost Co(OH)2 Nanosheets on Ni Foam as a Novel Electrode for High-Performance Hybrid Supercapacitors. Nanomaterials 2022, 12, 3982. [Google Scholar] [CrossRef] [Scilit] [PubMed]
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