ArticleNanomaterials (Basel, Switzerland)2022
Combined Gold Recovery and Nanoparticle Synthesis in Microbial Systems Using Fractional Factorial Design.
Article in Nanomaterials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 17 citations in OpenAlex.
- Phyto-assisted synthesis of zinc oxide nanoparticles using Bauhinia variegata buds extract and evaluation of their multi-faceted biological potentials.Scientific reports · 2024Article
- A Uni-Micelle Approach for the Controlled Synthesis of Monodisperse Gold Nanocrystals.Nanomaterials (Basel, Switzerland) · 2024Article
- Fractional Factorial Design to Evaluate the Synthesis and Electrochemical Transfer Parameters of h-BN Coatings.Nanomaterials (Basel, Switzerland) · 2023Article
- Green Synthesis of Silver Nanoparticles Loaded Hydrogel for Wound Healing; Systematic Review.Gels (Basel, Switzerland) · 2023Review
- Electrified bioreactors: the next power-up for biometallurgical wastewater treatment.Microbial biotechnology · 2022Review
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Authors and funding
9 authors at 4 institutions in 3 countries.
Funding
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Abstract
Green synthesis of gold nanoparticles (AuNPs) using microorganisms has been generally studied aiming for high-yield production and morphologies appropriated for various applications, such as bioremediation, (bio)sensors, and (bio)catalysis. Numerous approaches showed the individual effect of factors influencing the synthesis of AuNPs with limited analysis of the governing factors enhancing the production and desired quality of the precipitates. This study proposes a fractional-factorial design to investigate the simultaneous influence of seven environmental factors (cell concentration, temperature, anoxic/oxic conditions, pH, gold concentration, electron donor type, and bacterial species) on the recovery yield and synthesis of targeted AuNPs. Various sizes and morphologies of the AuNPs were obtained by varying the environmental factors studied. The factors with significant effects (i.e., 0.2 mM Au and pH 5) were selected according to statistical analysis for optimal removal of 88.2 ± 3.5% of gold and with the production of valuable 50 nm AuNPs, which are known for their enhanced sensitivity. Implications of the cytochrome-C on the bacterial mechanisms and the provision of electron donors via an electrochemical system are further discussed. This study helps develop gold recovery and nanoparticle synthesis methods, focusing on the determining factor(s) for efficient, low-cost, green synthesis of valuable materials.
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