The as the solution were mixed together, there was no color change, and then the UV-vis was read every 10min but barely any absorbance was observed. The solutions were 2,1mM of NaBH4 and 0,07g AgNO3 in 400ml of H2O. The Mixture of both was 30ml of sodium borohydride and 1ml of silver nitrate, and was placed in a ice bath. Then we expected the color to change but it never did
Dmitriy Berillo
Hello, It seems that you dont use suitable stabilizing agent or the pH is acidic. Therefore if silver reduced , but to microparticles. Also check your borohydride it may be hydrolyzed during storage and inactive
Please check our recent paper we reduced without reducing agent https://doi.org/10.1016/j.rsurfi.2023.100114
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