Abstract
In recent decades, the attention of scientists has been drawn towards nanoparticles (NPs) of metals and metalloids. Traditional methods for the manufacturing of NPs are now being extensively studied. However, disadvantages such as the use of toxic agents and high energy consumption associated with chemical and physical processes impede their continued use in various fields. In this article, we analyse the relevance of the use of living systems and their components for the development of "green" synthesis of nano-objects with exceptional properties and a wide range of applications. The use of nano-biotechnological methods for the synthesis of nanoparticles has the potential of large-scale application and high commercial potential. Bacteria are an extremely convenient target for green nanoparticle synthesis due to their variety and ability to adapt to different environmental conditions. Synthesis of nanoparticles by microorganisms can occur both intracellularly and extracellularly. It is known that individual bacteria are able to bind and concentrate dissolved metal ions and metalloids, thereby detoxifying their environment. There are various bacteria cellular components such as enzymes, proteins, peptides, pigments, which are involved in the formation of nanoparticles. Bio-intensive manufacturing of NPs is environmentally friendly and inexpensive and requires low energy consumption. Some biosynthetic NPs are used as heterogeneous catalysts for environmental restoration, exhibiting higher catalytic efficiency due to their stability and increased biocompatibility. Bacteria used as nanofactories can provide a new approach to the removal of metal or metalloid ions and the production of materials with unique properties. Although a wide range of NPs have been biosynthetic and their synthetic mechanisms have been proposed, some of these mechanisms are not known in detail. This review focuses on the synthesis and catalytic applications of NPs obtained using bacteria. Known mechanisms of bioreduction and prospects for the development of NPs for catalytic applications are discussed.
Highlights
The current stage of science development over the last 20 years has been characterized by comprehensive miniaturization of technological processes in chemistry, biology, medicine and agriculture, which contributes to the formation of a fundamentally new direction as nanotechnology
More and more bacteria have been used for the synthesis of selenium, which is widely used in agriculture, the use of which increases the productivity of animals and poultry much better than inorganic forms (Singh & Singh, 2019; Tsekhmistrenko et al, 2019)
Nano-It is promising to study the systemic response of macroorganisms to biotechnologies, based on the use of bacteria, contribute to the reduction the action of nanoparticles, which in general may differ significantly of nanoparticles, have high commercial potential with the prospects of from the results obtained in experiments on isolated cells
Summary
Zhytomyr National Agroecological University, Stary Boulevard, 7, Zhytomyr, 10002, Ukraine. Bacterial synthesis of nanoparticles: A green approach. Traditional methods for the manufacturing of NPs are being extensively studied. Disadvantages such as the use of toxic agents and high energy consumption associated with chemical and physical processes impede their continued use in various fields. We analyse the relevance of the use of living systems and their components for the development of "green" synthesis of nanoobjects with exceptional properties and a wide range of applications. Bacteria are an extremely convenient target for green nanoparticle synthesis due to their variety and ability to adapt to different environmental conditions. This review focuses on the synthesis and catalytic applications of NPs obtained using bacteria.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
