Silver‐Loaded Bio‐Structured Carbon/Cadmium Sulfide Lamellar Composites with Enhanced Photocatalysis under Visible Light

Abstract

A silver (Ag)-loaded biostructured carbon/cadmium sulfide (CdS) lamellar composite photocatalyst was synthesized using a hydrothermal and photodeposition method. Camellia petals functioned both as a biological layered template and as a source of carbon. The prepared composite photocatalyst demonstrated good absorption under visible light and exhibited excellent photocatalytic degradation performance. The photocatalytic degradation efficiency of the obtained 457 composites substantially improved compared with pure CdS. The 5 wt.-% Ag-loaded C/CdS sample exhibited the highest photocatalytic activity, reaching 96.5 % after 180 min, which was 8.7 times that of pure CdS. Specifically, the biocarbon sheet enhanced the absorption of visible light. Furthermore, the high electrical conductivity of Ag can effectively transfer and separate photogenerated electrons and holes, thus enhancing both photocatalytic performance and stability.

Synthesis of SnS2/Carbon Quantum Dots/g‐C3N4 Composite and Its Photocatalytic Property

“…Among them, χ is the electronegativity of the material; is the energy of free electrons at the hydrogen standard potential (about 4.5 eV). [ 39 ] According to the literature reports, the χ of g‐C 3 N 4 is 4.64 eV, [ 40 ] and the E VB of g‐C 3 N 4 is calculated to be +1.36 eV and E CB to be −1.07 eV, while SnS 2 has E VB of +2.13 eV and E CB of −0.15 eV.…”