Hussain Imtiyaz, Singh N B, Singh Ajey, Singh Himani, Singh S C
Plant Physiology Laboratory, Department of Botany, University of Allahabad, Allahabad, UP, 211002, India.
Laser Spectroscopy Laboratory, Department of Physics, University of Allahabad, Allahabad, UP, 11002, India.
Biotechnol Lett. 2016 Apr;38(4):545-60. doi: 10.1007/s10529-015-2026-7. Epub 2015 Dec 31.
Nanotechnology is a new and emerging technology with wealth of applications. It involves the synthesis and application of materials having one of the dimensions in the range of 1-100 nm. A wide variety of physico-chemical approaches are being used these days for the synthesis of nanoparticles (NPs). However, biogenic reduction of metal precursors to produce corresponding NPs is eco-friendly, less expensive, free of chemical contaminants for medical and biological applications where purity of NPs is of major concern. Biogenic reduction is a "Bottom Up" approach similar to chemical reduction where a reducing agent is replaced by extract of a natural products with inherent stabilizing, growth terminating and capping properties. Furthermore, the nature of biological entities in different concentrations in combination with reducing organic agents influence the size and shape of NPs. Present review focuses on microbes or plants based green synthesis of Ag, Au, Cu, Fe, Pd, Ru, PbS, CdS, CuO, CeO2, Fe3O4, TiO2, and ZnO NPs and their potential applications.
纳米技术是一项新兴的具有广泛应用的技术。它涉及到合成和应用尺寸在1-100纳米范围内的材料。如今，各种各样的物理化学方法被用于合成纳米颗粒（NPs）。然而，将金属前体生物还原以生产相应的纳米颗粒在医学和生物学应用中是环保的、成本较低且无化学污染物的，因为在这些应用中纳米颗粒的纯度是主要关注点。生物还原是一种“自下而上”的方法，类似于化学还原，只是用具有固有稳定、生长终止和封端特性的天然产物提取物替代了还原剂。此外，不同浓度的生物实体与还原性有机试剂相结合的性质会影响纳米颗粒的尺寸和形状。本综述聚焦于基于微生物或植物的银、金、铜、铁、钯、钌、硫化铅、硫化镉、氧化铜、二氧化铈、四氧化三铁、二氧化钛和氧化锌纳米颗粒的绿色合成及其潜在应用。
