In this paper, a novel method was proposed for the synthesis of Cu
2S on copper mesh via electrolysis in SRB culture medium. It was found that following electrolysis in SRB medium, squamous-like Cu
2S arrays were obtained on the copper
[...] Read more.
In this paper, a novel method was proposed for the synthesis of Cu
2S on copper mesh via electrolysis in SRB culture medium. It was found that following electrolysis in SRB medium, squamous-like Cu
2S arrays were obtained on the copper mesh, and the Cu
2S loading contents varied with the electrolyzing parameters. The resultant Cu
2S on copper mesh in SRB (CSCM-SRB) with the highest catalytic MB degradation properties was produced by electrolysis at 3.75 mA/cm
2 for 900 s. The optimized MB-degrading conditions were determined to be 1.2 cm
2/mL CSCM-SRB with 0.05 M H
2O
2 at 35 °C when pH = 6, under which the degradation of MB reached over 99% after 120 min of reaction. Disinfecting properties was also proven by antibacterial tests, revealing that an almost 100% antibacterial rate against
E. coli was obtained after 8 min. The organic compounds produced by SRB adsorbed on CSCM-SRB strongly promoted the degradation of MB. Furthermore, possible Fenton-like mechanisms of CSCM-SRB were proposed, illustrating that ·O
2−, ·OH, and
1O
2 acted as the main functional species during Fenton-like reactions, leading to effective MB degradation and high antibacterial properties. Finally, a simple device for wastewater treatment was designed, providing possible applications in real environments.
Full article
