Fast synthesis of silver colloids with a low-cost 3D printed photo-reactor

Simple Preparation of Metal-Impregnated FDM 3D-Printed Structures

“…In contrast, photosynthesized clusters (blue line spectrum) show an SPR maximum at 585 nm, which is representative of the presence of decahedral structures (average particle size > 20 nm). Please refer to our previous contribution [ 3 ] for a complete nanoparticles synthesis procedure and analysis.…”

“…For testing the AgNPs attachment to the PLA surface, 3D-printed milli-reactors (1 mm channel width) were impregnated in the channels with both synthesized colloids, ( Figure 4 a) (Please refer to a previous contribution [ 3 ] for a complete description of the design and assembly of the 3D-printed milli-reactors and pumping system). In our previous contribution, the 3D-printed reactors did not adsorb NPs when they were pumped across the fluidic system.…”

“…The synthesis procedure of quasi-spherical and variable shape AgNPs was adjusted from a previous contribution [ 3 ]. Freshly prepared AgNO 3 (10 mM), NaBH 4 (100 mM), Na 3 C 6 H 5 O 7 (100 mM), and H 2 O 2 (400 mM) were used as starting solutions.…”

“…Bigger clusters were synthesized using a 3D-printed reactor illuminated with a green LED light (100 W, IP66) at room temperature [ 3 ]. Briefly, the starting solution was pumped through the reactor ware with an infusion syringe pump (SP-200, Advanced Instrumentation, Miami, FL, USA) for 4 h. Samples were collected and stored in the dark prior to characterization.…”

“…Interest in the additive manufacturing process known as 3D printing has grown in different scientific areas in recent years [ 1 , 2 ], due to the advantages of rapid prototyping, fast design, ease of access, cost effectiveness, among many others. This fast development process has been applied in batch and micro- and milli-fluidic reactors [ 3 , 4 , 5 , 6 ] for chemical synthesis, medical devices [ 7 ], medicine tablets for drug delivery [ 8 , 9 ], 3D-printed scaffolds for tissue engineering [ 10 ], laboratory equipment [ 11 ], analytical and bioanalytical sensors [ 12 ], catalytic systems [ 13 , 14 ], etc. Among several 3D-printing techniques, fused deposition modeling (FDM) appears to be the cheapest, fastest, and most affordable method [ 1 ].…”