Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 1, Pages 534-542Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b06045
Keywords
photocatalysis; carbon quantum dots; MoS2; photothermal; antibacterial
Categories
Funding
- Natural Science Fund of Hubei Province [2018CFA064]
- National Natural Science Foundation of China [51671081, 51871162, 51801056, 51925104]
- National Key Research and Development Program of China [2016YFC1100600, 2016YFC1100604]
- Hong Kong Research Grants Council (RGC) General Research Funds (GRF) [11301215, 11205617, 17214516]
- RGC/NSFC [N_HKU725-16]
- Hong Kong ITC [ITS/287/17, GHX/002/14SZ]
- Health and Medical Research Fund [03142446]
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Bacteria are widespread in the environment, and antibiotics are usually used in large doses to kill the bacteria, which consequently leads to the appearance of drug-resistance bacteria. As a result, the development of new and non-antibiotic antibacterial material is in urgent need. Herein, the molybdenum disulfide (MoS2) nanosheet, which shows photocatalytic and photothermal properties, was modified with N-doping carbon quantum dots (CQDs). The CQDs could transport the photogenerated electrons produced by MoS2 nanosheets, preventing the recombination of electrons and holes, resulting in a much higher photocatalytic property. Because of the enhanced photocatalytic properties, these MoS2/CQDs hybrids could kill bacteria highly effectively, with antibacterial ratios of 99.38 and 99.99% against Staphylococcus aureus and Escherichia coli, respectively. Meanwhile, the hybrids exhibit good biocompatibility, which can prevent the potential side effect to both human and environment. Furthermore, through a simple spin-coating method, the MoS2/CQDs hybrids could also form a coating on the basement, e.g., Ti, and act as an antibacterial coating to prevent bacterial infection.
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