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Volume 12
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10.3390/coatings12091263
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Article

Near-Infrared-Activated MoS2(S)–Ag3PO4 Coating for Rapid Bacteria-Killing

by
Honggang Xia
1,
Dongbin Wang
1,
Aixian Tian
1,
Yingde Xu
2,
Hao Gong
1,
Zhaoyang Li
2,* and
Jun Miao
1,*
1
Department of Cardio-Thoracic Surgery, Tianjin Hospital Affiliated to Tianjin University, Tianjin 300200, China
2
Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
*
Authors to whom correspondence should be addressed.
Coatings 2022, 12(9), 1263; https://doi.org/10.3390/coatings12091263
Submission received: 30 July 2022 / Revised: 24 August 2022 / Accepted: 26 August 2022 / Published: 30 August 2022
(This article belongs to the Special Issue Advances in Antibacterial Coatings: From Materials to Applications)
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Abstract

Medical tools and implants used in clinics can be contaminated with bacteria even with disinfection treatment. To avert this situation, titanium (Ti) plates modified with a MoS2(S)–Ag3PO4 coating were designed to kill Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) effectively under near-infrared (NIR) light irradiation. The introduction of Ag3PO4 nanoparticles (NPs) reduced the bandgap of MoS2 and suppressed the recombination of the photogenerated electron–hole pairs. Therefore, Ti–MoS2(S)–Ag3PO4 exhibited a higher photocatalytic performance, leading to the generation of more radical oxygen species (ROS). Furthermore, cooperating with the good photothermal performance of MoS2, the MoS2(S)–Ag3PO4 coating exhibited a high antibacterial efficacy of 99.76 ± 0.15% and 99.85 ± 0.09% against S. aureus and E. coli, respectively, for 15 min in vitro. Moreover, the MoS2(S)–Ag3PO4 coating had no apparent toxicity to cells. The proposed strategy may provide new insights for rapidly eradicating bacteria on medical tools and superficial implants.
Keywords: bacteria-killing; Ag3PO4; MoS2; photocatalytic; photothermal bacteria-killing; Ag3PO4; MoS2; photocatalytic; photothermal

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MDPI and ACS Style

Xia, H.; Wang, D.; Tian, A.; Xu, Y.; Gong, H.; Li, Z.; Miao, J. Near-Infrared-Activated MoS2(S)–Ag3PO4 Coating for Rapid Bacteria-Killing. Coatings 2022, 12, 1263. https://doi.org/10.3390/coatings12091263

AMA Style

Xia H, Wang D, Tian A, Xu Y, Gong H, Li Z, Miao J. Near-Infrared-Activated MoS2(S)–Ag3PO4 Coating for Rapid Bacteria-Killing. Coatings. 2022; 12(9):1263. https://doi.org/10.3390/coatings12091263

Chicago/Turabian Style

Xia, Honggang, Dongbin Wang, Aixian Tian, Yingde Xu, Hao Gong, Zhaoyang Li, and Jun Miao. 2022. "Near-Infrared-Activated MoS2(S)–Ag3PO4 Coating for Rapid Bacteria-Killing" Coatings 12, no. 9: 1263. https://doi.org/10.3390/coatings12091263

APA Style

Xia, H., Wang, D., Tian, A., Xu, Y., Gong, H., Li, Z., & Miao, J. (2022). Near-Infrared-Activated MoS2(S)–Ag3PO4 Coating for Rapid Bacteria-Killing. Coatings, 12(9), 1263. https://doi.org/10.3390/coatings12091263

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