Microwave-assisted green synthesis of silver nanoparticles using orange peel extract

ACS Sustainable Chemistry and Engineering

Volumn 2, Issue 3, 2014, Pages 367-376

  Kahrilas, Genevieve A ^a   Wally, Laura M ^b   Fredrick, Sarah J ^b   Hiskey, Michael ^a   Prieto, Amy L ^b   Owens, Janel E ^a  

^a UNIVERSITY OF COLORADO   (United States)

^b Department of Environmental and Radiological Health Sciences   (United States)

Author keywords

Citrus peel; Green chemistry; Microwave synthesis; Silver nanoparticles

Indexed keywords

CITRUS PEEL; FLUORESCENCE EMISSION SPECTROSCOPY; GAS CHROMATOGRAPHY-MASS SPECTROMETRY; GREEN CHEMISTRY; MICROWAVE ASSISTED SYNTHESIS; MICROWAVE SYNTHESIS; SILVER NANOPARTICLES; SILVER NANOPARTICLES (AGNPS);

CITRUS FRUITS; EMISSION SPECTROSCOPY; GAS CHROMATOGRAPHY; MICROWAVE DEVICES; NANOPARTICLES; SYNTHESIS (CHEMICAL); TRANSMISSION ELECTRON MICROSCOPY; ULTRAVIOLET VISIBLE SPECTROSCOPY; X RAY DIFFRACTION;

SILVER;

EID: 84896874747     PISSN: None     EISSN: 21680485     Source Type: Journal    
DOI: 10.1021/sc4003664     Document Type: Article

References (90)

1. Auffan, M.; Rose, J.; Bottero, J.-Y.; Lowry, G. V.; Jolivet, J.-P.; Wiesner, M. R. Towards a definition of inorganic nanoparticles from an environmental, health and safety perspective Nat. Nanotechnol. 2009, 4, 634-641 10.1038/nnano.2009.242
2. Rejeski, D.; Kuiken, T.; Polischuk, P.; Pauwels, E. Consumer Product Inventory, 2012. The Project on Emerging Nanotechnologies. http://www. nanotechproject.org/cpi.
3. Suresh, A. K.; Pelletier, D. A.; Wang, W.; Morrell-Falvey, J. L.; Gu, B.; Doklycz, M. J. Cytotoxicity induced by engineered silver nanocrystallites is dependent on surface coatings and cell types Langmuir 2012, 28, 2727-2735 10.1021/la2042058
4. Srivastava, M.; Singh, S.; Self, W. T. Exposure to silver nanoparticles inhibits selenoprotein synthesis and the activity of thioredoxin reductase Environ. Health Perspect. 2011, 120, 56-61 10.1289/ehp.1103928
5. Demir, E.; Vales, G.; Kaya, B.; Creus, A.; Marcos, R. Genotoxic analysis of silver nanoparticles in Drosophila Nanotoxicology 2011, 5, 417-424 10.3109/17435390.2010.529176
6. Wang, J.; Jensen, U. B.; Jensen, G. V.; Shipovskov, S.; Balakrishnan, V. S.; Otzen, D.; Pedersen, J. S.; Besenbacher, F.; Sutherland, D. S. Soft interactions of nanoparticles alter protein function and conformation in a size dependent manner Nano Lett. 2011, 11, 4985-4991 10.1021/nl202940k
7. Liu, Z.; Zhang, T.; Ren, G.; Yang, Z. Nano-Ag inhibiting action potential independent glutamatergic synaptic transmission but increasing excitability in rat CA1 pyramidal neurons Nanotoxicology 2012, 6, 414-423 10.3109/17435390.2011. 583996
8. Zhao, C. M.; Wang, W. X. Importance of surface coatings and soluble silver in silver nanoparticles toxicity to Daphnia magna Nanotoxicology 2012, 6, 361-370 10.3109/17435390.2011.579632
9. Maccormack, T. J.; Clark, R. J.; Dang, M. K.; Ma, G.; Kelly, J. A.; Veinot, J. G.; Goss, G. G. Inhibition of enzyme activity by nanomaterials: Potential mechanisms and implications for nanotoxicity testing Nanotoxicology 2012, 6, 514-525 10.3109/17435390.2011.587904
10. Sung, J. H.; Ji, J. H.; Song, K. S.; Lee, J. H.; Choi, K. H.; Lee, S. H.; Yu, I. J. Acute inhalation toxicity of silver nanoparticles Toxicol. Ind. Health 2011, 27, 149-154 10.1177/0748233710382540
11. Luther, E. M.; Koehler, Y.; Diendorf, J.; Epple, M.; Dringen, R. Accumulation of silver nanoparticles by cultured primary brain astrocytes Nanotechnol. 2011, 2011, 37
12. El Badawy, A. M.; Silver, R. G.; Morris, B.; Scheckel, K. G.; Suidan, M. T.; Tolaymat, T. M. Surface charge-dependent toxicity of silver nanoparticles Environ. Sci. Technol. 2011, 45, 283-287
13. Park, K.; Park, E. J.; Chun, I. K.; Choi, K.; Lee, S. H.; Yoon, J.; Lee, B. C. Bioavailability and toxicokinetics of citrate-coated silver nanoparticles in rats Arch. Pharm. Res. 2011, 34, 153-158 10.1007/s12272-011-0118-z
14. Zhao, C. M.; Wang, W. X. Comparison of acute and chronic toxicity of silver nanoparticles and silver nitrate to Daphnia magna Environ. Toxicol. Chem. 2011, 30, 885-892 10.1002/etc.451
15. Xu, L.; Takemura, T.; Xu, M.; Hanagata, N. Toxicity of silver nanoparticles as assessed by global gene expression analysis Mater. Express 2011, 1, 74-79 10.1166/mex2011.1010
16. Kim, S.; Kim, S.; Lee, S.; Kwon, B.; Choi, J.; Hyun, J. W.; Kim, S. Characterization of the effects of silver nanoparticles on liver cell using HR-MAS NMR spectroscopy Bull. Korean Chem. Soc. 2011, 32, 2021-2026 10.5012/bkcs.2011.32.6.2021
17. Warisnoicharoen, W.; Hongpiticharoen, P.; Lawanprasert, S. Alteration in enzymatic function of human cytochrome P450 by silver nanoparticles Res. J. Environ. Toxicol. 2011, 5, 58-64 10.3923/rjet.2011.58.64
18. Powers, C. M.; Badireddy, A. R.; Ryde, I. T.; Siedler, F. J.; Slotkin, T. A. Silver nanoparticles compromise neurodevelopment in PC12 cells: Critical contributions of silver ion, particle size, coating, and composition Environ. Health Perspect. 2011, 119, 37-44 10.1289/ehp.1002337
19. Bexiga, M. G.; Varela, J. A.; Wang, F.; Fenaroli, F.; Salvati, A.; Lynch, I.; Simpson, J. C.; Dawson, K. A. Cationic nanoparticles induce caspase 3-, 7-and 9-mediated cytotoxicity in a human astrocytoma cell line Nanotoxicology 2011, 5, 557-567 10.3109/17435390.2010.539713
20. Zook, J. M.; MacCuspie, R. I.; Locascio, L. E.; Halter, M. D.; Elliott, J. T. Stable nanoparticle aggregates/agglomerates of different sizes and the effect of their size on hemolytic cytotoxicity Nanotoxicology 2011, 5, 517-530
21. Powers, C. M. Developmental Neurotoxicity of Silver and Silver Nanoparticles Modeled in Vitro and in Vivo. Ph.D. Dissertation, Duke University, 2010.
22. Powers, C. M.; Wrench, N.; Ryde, I. T.; Smith, A. M.; Seidler, F. J.; Slotkin, T. A. Silver impairs neurodevelopment: Studies in PC12 cells Environ. Health Perspect. 2010, 118, 73-79
23. Tang, J.; Xiong, L.; Zhou, G.; Wang, S.; Wang, J.; Liu, L.; Li, J.; Yuan, F.; Lu, S.; Wan, Z.; Chou, L.; Xi, T. Silver nanoparticles crossing through and distribution in the blood-brain barrier in vitro J. Nanosci. Nanotechnol. 2010, 10, 6313-6317
24. Braydich-Stolle, L. K.; Lucas, B.; Schrand, A.; Murdock, R. C.; Lee, T.; Schlager, J. J.; Hussain, S. M.; Hofmann, M. C. Silver nanoparticles disrupt GDNF/Fyn kinase signaling in spermatogonial stem cells Toxicol. Sci. 2010, 116, 577-589
25. AshaRani, P. V.; Mun, G. L. K.; Hande, M. P.; Valiyaveettil, S. Cytotoxicity and genotoxicity of silver nanoparticles in human cells ACS Nano 2009, 3, 279-290 10.1021/nn800596w
26. Sung, J. H.; Ji, J. H.; Park, J. D.; Yoon, J. U.; Kim, D. S.; Jeon, K. S.; Song, M. Y.; Jeong, J.; Han, B. S.; Han, J. H.; Chung, Y. H.; Chang, H. K.; Lee, J. H.; Cho, M. H.; Kelman, B. J.; Yu, I. J. Subchronic inhalation toxicity of silver nanoparticles Toxicol. Sci. 2009, 108, 452-461 10.1093/toxsci/kfn246
27. Kawata, K.; Osawa, M.; Okabe, S. In vitro toxicity of silver nanoparticles at noncytotoxic doses to HepG2 human hepatoma cells Environ. Sci. Technol. 2009, 43, 6046-6051 10.1021/es900754q
28. Kim, S.; Choi, J. E.; Choi, J.; Chung, K. H.; Park, K.; Yi, J.; Ryu, D. Y. Oxidative stress-dependent toxicity of silver nanoparticles in human hepatoma cells Toxicol. In Vitro 2009, 23, 1076-1084
29. Foldbjerg, R.; Olesen, P.; Hougaard, M.; Dang, D. A.; Hoffmann, H. J.; Autrup, H. PVP-coated silver nanoparticles and silver ions induce reactive oxygen species, apoptosis and necrosis in THP-1 monocytes Toxicol. Lett. 2009, 190, 156-162
30. Levard, C.; Hotze, E. M.; Lowry, G. V.; Brown, G. E., Jr. Environmental transformations of silver nanoparticles: Impact on stability and toxicity (critical review) Environ. Sci. Technol. 2012, 46, 6900-6914 10.1021/es2037405
31. Shoults-Wilson, W. A.; Reinsch, B. C.; Tsyusko, O. V.; Bertsch, P. M.; Lowry, G. V.; Unrine, J. M. Effect of silver nanoparticle surface coating on bioaccumulation and reproductive toxicity in earthworms (Eisenia fetida) Nanotoxicology 2011, 5, 432-444
32. Coutris, C.; Hertel-Aas, T.; Lapied, E.; Joner, E. J.; Oughton, D. H. Bioavailability of cobalt and silver nanoparticles to the earthworm Eisenia fetida Nanotoxicology 2012, 6, 186-195
33. Dimpka, C. O.; Calder, A.; Gajjar, P.; Merugu, S.; Huang, W.; Britt, D. W.; McLean, J. E.; Johnson, W. P.; Anderson, A. J. Interaction of silver nanoparticles with an environmentally beneficial bacterium, Pseudomonas chlororaphis J. Hazard. Mater. 2011, 188, 428-435
34. Radniecki, T. S.; Stankus, D. P.; Neigh, A.; Nason, J. A.; Semprini, L. Influence of liberated silver from silver nanoparticles on nitrification inhibition of Nitrosomonas europaea Chemosphere 2011, 85, 43-49
35. Fabrega, J.; Zhang, R.; Renshaw, J. C.; Liu, W. T.; Lead, J. R. Impact of silver nanoparticles on natural marine biofilm bacteria Chemosphere 2011, 85, 961-966
36. Gubbins, E. J.; Batty, L. C.; Lead, J. R. Phytotoxicity of silver nanoparticles to Lemna minor L Environ. Pollut. 2011, 159, 1551-1559
37. Turner, A.; Brice, D.; Brown, M. T. Interactions of silver nanoparticles with the marine microalga, Ulva lactuca Ecotoxicol. 2012, 21, 148-154
38. Wise, J. P., Sr.; Goodale, B. C.; Wise, S. S.; Craig, G. A.; Pongan, A. F.; Walter, R. B.; Thompson, W. D.; Ng, A. K.; Aboueissa, A. M.; Mitani, H.; Spalding, M. J.; Mason, M. D. Silver nanospheres are cytotoxic and genotoxic to fish cells Aquat. Toxicol. 2010, 97, 34-41
39. Lapied, E.; Moudilou, E.; Exbrayat, J. M.; Oughton, D. H.; Joner, E. J. Silver nanoparticle exposure causes apoptotic response in the earthworm Lumbricus terrestris (Oligochaeta) Nanomedicine 2010, 5, 975-984
40. Navarro, E.; Baun, A.; Behra, R.; Hartmann, N. B.; Filser, J.; Miao, A. J.; Quigg, A.; Santschi, P. H.; Sigg, L. Environmental behavior and ecotoxicity of engineered nanoparticles to algae, plants, and fungi Ecotoxicol. 2008, 17, 372-386
41. Navarro, E.; Piccapietra, F.; Wagner, B.; Marconi, F.; Kaegi, R.; Odzak, N.; Sigg, L.; Behra, R. Toxicity of silver nanoparticles to Chlamydomonas reinhardtii Environ. Sci. Technol. 2008, 42, 8959-8964 10.1021/es801785m
42. Yin, L.; Cheng, Y.; Espinasse, B.; Colman, B. P.; Auffan, M.; Wiesner, M. R.; Rose, J.; Liu, J.; Bernhardt, E. S. More than the Ions: The effects of silver nanoparticles on Lolium multiflorum Environ. Sci. Technol. 2011, 45, 2360-2367
43. Bilberg, K.; Hovgaard, M. B.; Besenbacher, F.; Baatrup, E. In vivo toxicity of silver nanoparticles and silver ions in zebrafish (Danio rerio). J. Toxicol. 2012, 2012, DOI: 10.1155/2012/293784.
44. Ringwood, A. H.; McCarthy, M.; Bates, T. C.; Carroll, D. L. The effects of silver nanoparticles on oyster embryos Mar. Environ. Res. 2010, 69 (Suppl) S49-51
45. Tolaymat, T. M.; El Badawy, A. M.; Genaidy, A.; Scheckel, K. G.; Luxton, T. P.; Suidan, M. T. An evidence-based environmental perspective of manufactured silver nanoparticle in syntheses and applications: A systematic review and critical appraisal of peer-reviewed scientific papers Sci. Total Environ. 2010, 408, 999-1006
46. Taurozzi, J. S.; Hackley, V. A.; Wiesner, M. R. Ultrasonic dispersion of nanoparticles for environmental, health and safety assessment-Issues and recommendations Nanotoxicology 2010, 5, 711-729
47. Taurozzi, J. S.; Hackley, V. A.; Wiesner, M. R. Reporting Guidelines for the Preparation of Aqueous Nanoparticle Dispersions from Dry Materials; NIST Special Publication 1200-1; National Institute of Standards and Technology: Gaithersburg, MD, 2012.
48. Hebbalalu, D.; Lalley, J.; Nadagouda, M. N.; Varma, R. S. Greener techniques for the synthesis of silver nanoparticles using plant extracts, enzymes, bacteria, biodegradable polymers, and microwaves ACS Sustainable Chem. Eng. 2013, 1 (7) 703-712 10.1021/sc4000362
49. Kouvaris, P.; Delimitis, A.; Zaspalis, V.; Papadoupoulous, D.; Tsipas, S. A.; Michailidis, N. Green synthesis and characterization of silver nanoparticles produced using Arbutus Unedo leaf extract Mater. Lett. 2012, 76, 18-20
50. Kaviya, S.; Santhanalakshmi, J.; Viswanathan, B. Green synthesis of silver nanoparticles using Polyalthia longifolia leaf extract along with D-sorbitol: Study of antibacterial activity. J. Nanotechnol. 2011, 2011, DOI: 10.1155/2011/152970.
51. Jha, A. K.; Prasad, K.; Kumar, V.; Prasad, K. Biosynthesis of silver nanoparticles using Eclipta leaf Biotechnol. Prog. 2009, 25, 1476-1479
52. Jha, A. K.; Prasad, K.; Prasad, K.; Kulkarni, A. R. Plant system: nature's nanofactory Colloids Surf., B 2009, 73, 219-223
53. Huang, J.; Li, Q.; Sun, D.; Lu, Y.; Su, Y.; Yang, X.; Wang, H.; Wang, Y.; Shao, W.; He, N.; Hong, J.; Chen, C. Biosynthesis of silver and gold nanoparticles by novel sundried Cinnamomum camphora leaf. Nanotechnol. 2007, 18, DOI: 10.1088/0957-4484/18/10/105104.
54. Leela, A.; Vivekanandan, M. Tapping the unexploited plant resources for the synthesis of silver nanoparticles African J. Biotechnol. 2008, 7, 3162-3165
55. Mubarak Ali, D.; Thajuddin, N.; Jeganathan, K.; Gunasekaran, M. Plant extract mediated synthesis of silver and gold nanoparticles and its antibacterial activity against clinically isolated pathogens Colloids Surf., B 2011, 85, 360-365
56. Chandran, S. P.; Chaudhary, M.; Pasricha, R.; Ahmad, A.; Sastry, M. Synthesis of gold nanotriangles and silver nanoparticles using Aloe vera plant extract Biotechnol. Prog. 2006, 22, 577-583
57. Vijayaraghavan, K.; Kamala Nalini, S. P.; Udaya Prakash, N.; Madhankumar, D. Biomimetic synthesis of silver nanoparticles by aqueous extract of Syzygium aromaticum Mater. Lett. 2012, 75, 33-35
58. Philip, D. Biosynthesis of Au, Ag, and Au-Ag nanoparticles using edible mushroom extract Spectrochim. Acta, Part A 2009, 73, 374-381
59. Nadagouda, M. N.; Varma, R. S. Green synthesis of silver and palladium nanoparticles at room temperature using coffee and tea extract Green Chem. 2008, 10, 859-862
60. Kaviya, S.; Santhanalakshmi, J.; Viswanathan, B.; Muthumary, J.; Srinivasan, K. Biosynthesis of silver nanoparticles using Citrus sinensis peel extract and its antibacterial activity Spectrochim. Acta, Part A 2011, 79, 594-598
61. Galema, S. A. Microwave chemistry Chem. Soc. Rev. 1997, 26, 233-238
62. Tsuji, M.; Hashimoto, M.; Nishizawa, Y.; Kubokawa, M.; Tsuji, T. Microwave-assisted synthesis of metallic nanostructures in solution Chemistry 2005, 11, 440-452
63. Nath, S.; Ghosh, S. K.; Panigrahi, S.; Pal, T. Aldehyde assisted wet chemical route to synthesize gold nanoparticles Indian J. Chem. A 2004, 43, 1147-1151
64. Jiang, H.; Moon, K.-s.; Zhang, Z.; Pothukuchi, S.; Wong, C. P. Variable frequency microwave synthesis of silver nanoparticles J. Nanopart. Res. 2006, 8, 117-124
65. Sato, S.; Mori, K.; Ariyada, O.; Atsushi, H.; Yonezawa, T. Synthesis of nanoparticles of silver and platinum by microwave-induced plasma in liquid Surf. Coat. Technol. 2011, 206, 955-958
66. Bahadur, N. M.; Furusawa, T.; Sato, M.; Kurayama, F.; Siddiquey, I. A.; Suzuki, N. Fast and facile synthesis of silica coated silver nanoparticles by microwave irradiation J. Colloid Interface Sci. 2011, 355, 312-320
67. Dwivedi, R.; Maurya, A.; Verma, A.; Prasad, R.; Bartwal, K. S. Microwave assisted sol-gel synthesis of tetragonal zirconia nanoparticles J. Alloys Compd. 2011, 509, 6848-6851
68. Blosi, M.; Albonetti, S.; Dondi, M.; Martelli, C.; Baldi, G. Microwave-assisted polyol synthesis of Cu nanoparticles J. Nanopart. Res. 2011, 13, 127-138
69. Marquardt, D.; Vollmer, C.; Thomann, R.; Steurer, P.; Mulhaupt, R.; Redel, E.; Janiak, C. The use of microwave irradiation for the easy synthesis of graphene-supported transition metal nanoparticles in ionic liquids Carbon 2011, 49, 1326-1332
70. Horikoshi, S.; Abe, H.; Torigoe, K.; Abe, M.; Serpone, N. Access to small size distributions of nanoparticles by microwave-assisted synthesis. Formation of Ag nanoparticles in aqueous carboxymethylcellulose solutions in batch and continuous-flow reactors Nanoscale 2010, 2, 1441-1447
71. Pal, A.; Shah, S.; Devi, S. Microwave-assisted synthesis of silver nanoparticles using ethanol as a reducing agent Mater. Chem. Phys. 2009, 114, 530-532
72. Hu, B.; Wang, S.-B.; Wang, K.; Zhang, M.; Yu, S.-H. Microwave-assisted rapid facile "green" synthesis of uniform silver nanoparticles: Self-assembly into multilayered films and their optical properties J. Phys. Chem. C 2008, 112, 11169-11174
73. Baruwati, B.; Simmons, S. O.; Varma, R. S.; Veronesi, B. "Green" synthesized and coated nanosilver alters the membrane permeability of barrier (intestinal, brain endothelial) cells and stimulates oxidative stress pathways in neurons ACS Sustainable Chem. Eng. 2013, a (7) 753-759 10.1021/sc400024a
74. Khan, M. A. M.; Kumar, S.; Ahamed, M.; Alrokayan, S. A.; Alsalhi, M. S.; Alhoshan, M.; Aldwayyan, A. S. Structural and spectroscopic studies of thin film of silver nanoparticles Appl. Surf. Sci. 2011, 257, 10607-10612
75. Kim, T.-G.; Kim, Y. W.; Kim, J. S.; Park, B. Silver-nanoparticle dispersion from the consolidation of Ag-attached silica colloid J. Mater. Res. 2004, 19, 1400-1407
76. Bohren, C. F.; Huffman, D. R. Absorption and Scattering of Light by Small Particles; Wiley: New York, 1983.
77. Link, S.; El-Sayed, M. A. Optical properties and ultrafast dynamics of metallic nanocrystals Annu. Rev. Phys. Chem. 2003, 54, 331-366
78. Kreibig, U.; Vollmer, M. Optical Properties of Metal Clusters; Springer-Verlag: New York, 1995.
79. Kerker, M. The optics of colloidal silver: Something old and something new J. Colloid Interface Sci. 1985, 105, 297-314
80. Shaw, P. E.; Wilson, C. W., III Importance of nootkatone to the aroma of grapefruit oil and the flavor of grapefruit juice J. Agric. Food Chem. 1981, 29, 677-679
81. Dharmawan, J.; Kasapis, S.; Sriramula, P.; Lear, M. J.; Curran, P. Evaluation of aroma-active compounds in Pontianak orange peel oil (Citrus nobilis Lour. Var. microcarpa Hassk.) by gas chromatography-olfactometry, aroma reconstitution, and omission test J. Agric. Food Chem. 2009, 57, 239-244
82. Alqudami, A.; Annapoorni, S. Fluorescence from metallic silver and iron nanoparticles prepared by exploding wire technique Plasmonics 2007, 2, 5-13
83. Yeshchenko, O. A.; Dmitruk, I. M.; Alexeenko, A. A.; Losytskyy, M. Y.; Kotko, A. V.; Pinchuk, A. O. Size-dependent surface-plasmon-enhanced photoluminescence from silver nanoparticles embedded in silica Phys. Rev. B 2009, 79, 235438
84. Jiang, Z.; Yuan, W.; Pan, H. Luminescence effect of silver nanoparticle in water phase Spectrochim. Acta, Part A 2005, 51, 2488-2494
85. El-Shishtaway, R. M.; Asiri, A. M.; Al-Otaibi, M. M. Synthesis and spectroscopic studies of stable aqueous dispersion of silver nanoparticles Spectrochim. Acta, Part A 2011, 79, 1505-1510
86. Vigneshwaran, N.; Nachane, R. P.; Balasubramanya, R. H.; Varadarajan, P. V. A novel one-pot 'green' synthesis of stable silver nanoparticles using soluble starch Carbohydr. Res. 2006, 341, 2012-2018
87. Duran, N.; Marcato, P. D.; Alves, O. L.; De Souza, G. I. H.; Esposito, E. Mechanistic aspects of biosynthesis of silver nanoparticles by several Fusarium oxysporum strains. J. Nanobiotechnol. 2005, 3, DOI: 10.1186/1477-3155-3-8.
88. Zhao, Y.; Jiang, Y.; Fang, Y. Spectroscopy property of Ag nanoparticles Spectrochim. Acta, Part A 2006, 65, 1003-1006
89. Vigneshwaran, N.; Ashtaputre, N. M.; Varadarajan, P. V.; Nachane, R. P.; Paralikar, K. M.; Balasubramanya, R. H. Biological synthesis of silver nanoparticles using the fungus Aspergillus flavus Mater. Lett. 2007, 61, 1413-1418
90. MacCuspie, R. I.; Rogers, K.; Patra, M.; Suo, Z.; Allen, A. J.; Martin, M. N.; Hackley, V. A. Challenges for physical characterization of silver nanoparticles under pristine and environmentally relevant conditions J. Environ. Monit. 2011, 13, 1212-1226