Abstract
We investigate the possibility of reusing CTAB solutions for repeated synthesis of gold nanorods. Three tasks have been solved. The first task is to clean the growth solutions from gold nanorods. The second task is to develop a method using a purified cetyltrimethylammonium bromide solution for repeated synthesis of gold nanorods with the same optical properties as in the initial synthesis. The third task is to test the possibility of management of the optical properties of nanorods during repeated synthesis. The polydispersity of nanorods has been estimated by form factor using developed mathematical model.
Highlights
We investigate the possibility of reusing cetyltrimethylammonium bromide (CTAB) solutions for repeated synthesis of gold nanorods
The third task is to test the possibility of management of the optical properties of nanorods during repeated synthesis
The polydispersity of nanorods has been estimated by form factor using developed mathematical model
Summary
Для первоначального синтеза последовательно смешивали 3,003 г ЦТАБ, 82,27 мл воды, 1,8 или 2,5 мл 3,55 мМ водного раствора нитрата серебра, 2 мл 40,4 мМ водного раствора изоаскорбиновой кислоты, 2 мл 20 мМ водного раствора золотохлористоводородной кислоты (ЗХВК), 0,82 мл 1 М соляной кислоты и 0,82 мл водной смеси 1 мМ боргидрида натрия и 1 мМ гидроксида натрия. Очистка маточного раствора Маточный раствор после каждого синтеза очищали от наночастиц золота четырехкратным центрифугированием при 15000 g и времени центрифугирования 1,5 часа для каждого раза. Повторный синтез К 40 мл ОР последовательно добавляли от 0 до 0,9 мл 3,55 мМ водного раствора нитрата серебра, 0,9 мл 40,4 мМ водного раствора изоаскорбиновой кислоты, 0,9 мл 20 мМ водного раствора ЗХВК и 0,362 мл водной смеси 1 мМ боргидрида натрия и 1 мМ гидроксида натрия.
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