Correction: Chen et al. Preparation and Photothermal Antimicrobial Performance of Triple Linkage Hydrogels. Coatings 2024, 14, 363

There were some errors in the original publication [1].

Text Correction

Three corrections have been made to Section 2.5, Photothermal Performance Test, to improve the paper logic with rephrasing sentences and correcting writing mistake for:

• First paragraph, third sentence: “The photothermal performance of TNT@MPDA@Au nanotubes with different concentrations of TNT@MPDA@Au was investigated by this irradiation and temperature measurement process [45].”
• Second paragraph, first sentence, the original was changed from “1 mL” to “3 mL”.
• Second paragraph, third sentence: “In this experiment, the photothermal stability of the TNT@MPDA@Au nanotubes was investigated by the cyclic curves of temperature increase and decrease [46].”

Five corrections have been made to Section 3, Results and Discussion, to improve the paper logic with rephrasing sentences and correcting writing mistake for:

• Title of Section 3.1, the original was changed from “TiO₂TNTs@MPDA@Au” to “TNT@MPDA@Au”.
• Section 3.1, fifth paragraph has been corrected as follows: “As shown in Figure 3, curves A and B represent the FTIR spectra of TNT@MPDA and TNT@MPDA@Au nanotubes, respectively. In the FTIR spectra, a broad peak belonging to the Ti–O bond appeared at 490 cm⁻¹. The peaks at 1380 cm⁻¹, 1620 cm⁻¹, and 3180 cm⁻¹ represent the C–H bending vibration within the benzene ring, the backbone vibration of the benzene ring, and the C=C stretching vibration within the benzene ring, respectively. These indicate the successful preparation of TNT@MPDA@Au composites [46,54].”
• Section 3.1, sixth paragraph, sixth sentence: the original was changed from “θ” to “2θ”.
• Section 3.2, first paragraph, fifth–seventh sentence: “The temperature reached 56.1 °C at a concentration of 2 mg/mL. Figure 5b shows a temperature difference of 29 °C for TNT@MPDA@Au nanotubes at a concentration of 2 mg/mL and a room temperature of 27.1 °C. The absorbance of the TNT@MPDA@Au nanotubes at 808 nm was measured by UV–Vis as 2.488.”
• Section 3.2, first paragraph, ninth sentence: “According to Formulas (1)–(3), the photothermal efficiency of TNT@MPDA@Au nanotubes can be calculated to be 37.88% at a concentration of 2 mg/mL.”

To improve the readability and accuracy of the paper, a correction has been made to Section 3.4, In Vitro Cytotoxicity, first paragraph, second sentence: the original was changed from “CCK 8” to “CCK-8”; Section 3.5, Mechanical Properties of Hydrogels, third paragraph, last sentence: “the initial values were reached in 12 h.”

Error in Figures

In the original publication [1], there was a mistake in the legend for Figure 2f; the split peaks in the original plot were not well fitted.

Corrected Figure 2 and it’s legend appears below:

Figure 2. The high-definition XPS of (a) C1s, (c) N1s, (e) O1s, (g) Ti2p, and (i) XPS full spectrum of TNT@MPDA nanotubes. The high-definition XPS of (b) Au4f, (d) C1s, (f) O1s, (h) Ti2p, and (j) XPS full spectrum of TNT@MPDA@Au nanotubes.

Figure 2. The high-definition XPS of (a) C1s, (c) N1s, (e) O1s, (g) Ti2p, and (i) XPS full spectrum of TNT@MPDA nanotubes. The high-definition XPS of (b) Au4f, (d) C1s, (f) O1s, (h) Ti2p, and (j) XPS full spectrum of TNT@MPDA@Au nanotubes.

Figure 3b and the content were deleted to improve the accuracy of the paper. The interpretation of the FTIR spectra of the TNT@MPDA and TNT@MPDA@Au nanotubes was not precise enough and has been corrected to improve the logic and accuracy of the paper. As mentioned, the presence of AuNPs was reflected in the TEM, SEM, and XPS, and the presence of Figure 3b was not very necessary, as it made the article more cumbersome and was incorrectly described in the original article.

The correct legend and Figure 3 appear below.

Figure 3. FTIR spectra of TNT@MPDA nanotubes and TNT@MPDA@Au nanotubes.

Figure 3. FTIR spectra of TNT@MPDA nanotubes and TNT@MPDA@Au nanotubes.

There was a mistake in the legend for Figure 4; the image was blurry, so it was replaced with a clearer one.

The correct legend and Figure 4 appear below.

Figure 4. (a) XRD spectrum of anatase TiO₂ nanopowders and the produced titanate nanotube. (b) XRD spectrum of TNT@MPDA@Au nanotubes. (c) Zeta potential curves and (d) hydration kinetic particle size of the TNT@MPDA nanotubes and the TNT@MPDA@Au nanotubes. (e) N₂ adsorption-desorption curves and (f) pore size distribution plots of the TNT@MPDA nanoparticles.

Figure 4. (a) XRD spectrum of anatase TiO₂ nanopowders and the produced titanate nanotube. (b) XRD spectrum of TNT@MPDA@Au nanotubes. (c) Zeta potential curves and (d) hydration kinetic particle size of the TNT@MPDA nanotubes and the TNT@MPDA@Au nanotubes. (e) N₂ adsorption-desorption curves and (f) pore size distribution plots of the TNT@MPDA nanoparticles.

There was a mistake in the legend for Figure 8g; the vertical coordinates of Figure 8g in the original article represent the degradation rates (%) which should be 100%, 200%, 300%, etc., instead of 1%, 2%, 3%, etc., which is due to a mistake in the calculation when applying Formula (6) in the article [1]: R = W_i/W_f × 100%. The Authors apologize for this unfortunate error and have provided accurate data for that experiment.

The corrected Figure 8 and legend are shown below.

Figure 8. Adhesive properties of pure hydrogel and TNT@MPDA@Au@PVA/PEG hydrogel (a). Injectable, self-healing properties and remodelling of pure PVA/PEG hydrogel (b) and TNT@MPDA@Au@PVA/PEG hydrogel (c). Typical tensile stress–strain curves (d) and typical compression stress–strain curves (e), swelling curve (f) and degradation curve (g) for pure PVA/PEG hydrogel TNT@MPDA@Au@PVA/PEG hydrogels (1.5 wt%) and TNT@MPDA@Au@PVA/PEG hydrogels (3 wt%).

Figure 8. Adhesive properties of pure hydrogel and TNT@MPDA@Au@PVA/PEG hydrogel (a). Injectable, self-healing properties and remodelling of pure PVA/PEG hydrogel (b) and TNT@MPDA@Au@PVA/PEG hydrogel (c). Typical tensile stress–strain curves (d) and typical compression stress–strain curves (e), swelling curve (f) and degradation curve (g) for pure PVA/PEG hydrogel TNT@MPDA@Au@PVA/PEG hydrogels (1.5 wt%) and TNT@MPDA@Au@PVA/PEG hydrogels (3 wt%).

The authors state that the scientific conclusions are unaffected. These corrections were approved by the Academic Editor. The original publication has also been updated.