Photocatalytic Degradation of Methyl Orange Dyes Using Green Synthesized MoS[sub.2]/Co[sub.3]O[sub.4] Nanohybrids

In this work, a new binary MoS[sub.2]/Co[sub.3]O[sub.4] nanohybrids was successfully fabricated and the chemical structures, morphologies, electrochemical and optical characterizations were carried out. In addition, heterojunction nanoparticles present in S-scheme structures act as electron traps and promote light absorption capacity for the degradation of Methyl orange (MO) with visible-light activity. MoS[sub.2]/Co[sub.3]O[sub.4] nanohybrids suggested excellent photocatalytic performance compared to bare MoS[sub.2] and Co[sub.3]O[sub.4], where 95.6% of MO was degraded within 170 min, respectively. The results also showed excellent stability and recyclability over five consecutive cycles, without noticeable changes in the nanocomposite structure. The boosted photocatalytic degradation and redox activities of MoS[sub.2]/Co[sub.3]O[sub.4] can be attributed to the created S-scheme heterostructure to facilitate the separation of and to delay recombination of photoinduced charge carriers. We believe that this strategy of exploiting nanohybrid photocatalysts has great potential in the field of environmental catalysis and diverse applications.