Fig. 1. Synthesis route of silver nanocluster aqueous solution

Fig. 2. Uv-vis spectra of silver nanoclusters (a), fluorescence spectrum of silver nanoclusters (excitation wavelength 550 nm) (b)

Fig. 3. TEM image (a) and particle size distribution (b) of silver nanoclusters

Fig. 4. Macroscopic performance of silver nanocluster composites

Fig. 5. Fluorescence (a) and spectra (b) of Ag nanocluster composites before and after treatment with different concentrations of chromium ions (Ⅲ)

Fig. 6. Ultraviolet-visible spectra of the catalytic process (a), first-order fitting catalytic equation (b), and cyclic catalytic process (c) of silver nanocluster composite PE film

Fig. 7. Ultraviolet-visible spectra of the catalytic process (a), and catalytic process (b) of silver nanocluster cotton composite