Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 837, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2022.155720
Keywords
Nanomaterial; Bactericidal behavior; Disinfection technology; Bactericidal devices; Sterilization product
Categories
Funding
- Natural Science Foundation of Zhejiang Province [LY19B070005]
- National Key Research and Development Project [2018YFC0214100]
- ZhejiangUniversity of Technology Initial Research Foundation [2018129000929]
- Xinmiao Program for Talents from Zhejiang Province [2020R403053]
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This article provides a state-of-the-art review on the development of nanomaterial-based disinfection/sterilization techniques, focusing on the types of nanomaterials, disinfection techniques, bactericidal devices, sterilization products, and application scenarios. The widely used silver nanoparticles are considered as the most effective bacterial agents. Various methodologies to address challenges in traditional sterilization are discussed, and feasible strategies for improving disinfection/sterilization systems are proposed.
Harmful microorganism (e.g., new coronavirus) based infection is the most important security concern in life sciences and healthcare. This article aims to provide a state-of-the-art review on the development of advanced technology based on nanomaterial disinfection/sterilization techniques (NDST) for the first time including the nanomaterial types, disinfection techniques, bactericidal devices, sterilization products, and application scenarios (i.e., water, air, medical healthcare), with particular brief account of bactericidal behaviors referring to varied systems. In this emerging research area spanning the years from 1998 to 2021, total of ~200 publications selected for the type of review paper and research articles were reviewed. Four typical functional materials (namely type of metal/metal oxides, S-based, C-based, and N-based) with their development progresses in disinfection/sterilization are summarized with a list of synthesis and design. Among them, the widely used silver nanoparticles (AgNPs) are considered as the most effective bacterial agents in the type of nanomaterials at present and has been reported for inactivation of viruses, fungi, protozoa. Some methodologies against (1) disinfection by-products (DBPs) in traditional sterilization, (2) noble metal nano particles (NPs) agglomeration and release, (3) toxic metal leaching, (4) solar spectral response broadening, and (5) photogenerated e(-)/h(+) pairs recombination are reviewed and discussed in this field, namely (1) alternative techniques and nanomaterials, (2) supporter anchoring effect, (3) nonmetal functional nanomaterials, (4) element doping, and (5) heterojunction constructing. The feasible strategies in the perspective of NDST are proposed to involve (1) non noble metal disinfectors, (2) multi-functional nanomaterials, (3) multi-component nanocomposite innovation, and (4) hybrid techniques for disinfection/sterilization system. It is promising to achieve 100% bactericidal efficiency for 10(8) CFU/mL within a short time of less than 30 min.
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