J. Mater. Sci. Technol. ›› 2023, Vol. 158: 63-76.DOI: 10.1016/j.jmst.2023.01.041

• Review article • Previous Articles     Next Articles

Green synthesis of functional metallic nanoparticles by dissimilatory metal-reducing bacteria “Shewanella”: A comprehensive review

Jing Yanga,b,c, Peng Jud,*, Xucheng Donga,b, Jizhou Duana,b,e,f, Hui Xiaoc, Xuexi Tangc, Xiaofan Zhaia,b,e,f,*, Baorong Houa,b,e,f   

  1. aCAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
    bOpen studio for marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, China;
    cCollege of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
    dKey Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
    eSanya Institute of Ocean Eco-Environmental Engineering, Sanya 572000, China;
    fInstitute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, China
  • Received:2022-09-19 Revised:2022-12-11 Accepted:2023-01-24 Published:2023-09-20 Online:2023-09-15
  • Contact: *E-mail address:jupeng@fio.org.cn (P. Ju), zhaixf@qdio.ac.cn (X. Zhai)

Abstract: The biosynthesis strategy of nanoparticles has attracted much attention due to the mild synthesis conditions, environmental-friendly properties, and low costs. Biosynthesized nanoparticles (bio-NPs) not only show excellent physicochemical properties, but also exhibit high stability, enlarged specific surface area, and excellent biocompatibility, which are crucial for industrial, agricultural, and medical fields. Shewanella, a kind of dissimilatory metal-reducing bacteria, is regarded as a typical biosynthesis-functional bacteria class with wide distribution and strong adaptability. Thus, in this paper, functional bio-NPs by Shewanella were reviewed to provide a comprehensive view of current research progress. The biosynthetic mechanisms of Shewanella are summarized as the Mtr pathway (predominant), extracellular polymeric substance-induced pathway, and enzyme/protein-induced pathway. During the biosynthesis process, biological factors along with the physicochemical parameters highly influenced the properties of the resultant bio-NPs. Till now, bio-NPs have been applied in various fields including environmental remediation, antibacterial applications, and microbial fuel cells. However, some challenging issues of bio-NPs by Shewanella remain unsolved, such as optimizing suitable bacterial strains, intelligently controlling bio-NPs, clarifying biosynthesis mechanisms, and expanding bio-NPs applications.

Key words: Shewanella strains, Functional metallic nanoparticles, Green biosynthesis, Metal reduction