Figure 7From: Fabrication and photocatalytic properties of silicon nanowires by metal-assisted chemical etching: effect of H2O2 concentrationMechanism diagram of Ag deposition on the Si surface in HF/AgNO 3 solution. (a) Formation of Ag nucleation. (b) Ag particle growth and Si substrate oxidation. (c) Ag particles trapped in the pits formed by the etching of SiO2 around it by HF.Back to article page