▎ 摘　　要

In this work, the silver/graphene oxide (AG) nanocomposite was synthesized with various AgNO3:GO ratios according to our previous studies. The characterization of AG nanocomposites is determined through modern analytical methods, resulting in particle sizes of 18.09 +/- 3.78 nm (1:1 wt/wt -AG2) and 22.88 +/- 4.67 nm (1.25:1 wt/wt -AG3). Further investigations on the smallest variation of factors affecting the Hg(II) sensing ability of AG nanocomposite were examined through the Box-Behnken model. The obtained results showed that the sensing performance of AG3 achieved a limit of detection of 19.06 +/- 0.42 mu g/L with AG dose of 49.21 mg/L, solution salinity of 52 parts per thousand, and interaction time of 10.08 min. The acceptable relative standard deviation of 6.7% revealed the high precision of the treatment. Meanwhile, AG2 demonstrates the highest adsorption capacity towards CV, attaining 100 % of removal with the initial concentration of less than 25 mg/L; concurrently, the adsorption behavior follows the Langmuir isotherm model and provides impressive reusability. The research has introduced the AG nanocomposite as a promising material in Hg(II) sensing and crystal violet removal.