SiO2 AgNPs@SiO2 AgNPS Water Negative Control Av Gi Bh Av Gi Bh Chromium no no no no no no no no no Oxazolidine no no no no yes yes yes yes no Aluminium yes yes yes yes yes yes yes yes no Titanium no no no no no no no no no

Table 3: Visual assessment results of the spotting test under different conditions.