Metal Nanoparticles Anchored on Rhenium Disulfide Nanosheets as Catalysts for the Reduction of Aromatic Nitro Compounds. Issue 12 (20th November 2018)

• Record Type: Journal Article
• Authors: Dhenadhayalan, Namasivayam; Lin, Ta‐Wei; Veerakumar, Pitchaimani; Lin, King‐Chuen
• Is Part Of: ChemNanoMat. Volume 4:Issue 12(2018)
• Page Start: 1262
• Page End: 1269
• Publication Date: 2018-11-20
• Subjects: heterogeneous catalysis -- nanoparticles -- nitro compounds -- reduction -- transition metal dichalcogenides; Nanochemistry -- Periodicals; Nanostructured materials -- Periodicals; Nanochemistry; Nanostructured materials; Periodicals; 541.2
• DOI: 10.1002/cnma.201800353
• Languages: English
• ISSNs: 2199-692X

Abstract

Abstract: The nanohybrids of noble metal (M=Ag, Au, Pd, Pt, and Ru) nanoparticle‐decorated rhenium disulfide nanosheets (ReS2 NSs) were demonstrated as excellent catalysts towards the reduction of aromatic nitro compounds. The M/ReS2 nanohybrids were synthesized by facile hydrothermal method and characterization results proved that each metal nanoparticle was anchored on the ReS2 NSs. These nanohybrids exhibited superior catalytic performance towards the reduction of aromatic nitro compounds including 4‐nitrophenol, 2‐nitroaniline, and nitrobenzene. Interestingly, the Ru/ReS2 and Pd/ReS2 showed enhanced catalytic reduction compared to Ag/ReS2, Au/ReS2, and Pt/ReS2 and also showed significant catalytic stability due to metal nanoparticles anchored strongly on the surface of ReS2 NSs. Moreover, these M/ReS2 nanohybrids turned out to have much better catalytic performance compared to noble metal nanoparticle‐based catalysts. A plausible reduction mechanism was proposed for each nitro compound. It was verified that the metal‐nanoparticle‐mediated hydrogen transfer was involved in the reduction of nitro compounds to amines. This report demonstrates the catalytic activities for metal nanoparticle‐decorated ReS2 nanohybrids, which can serve as a paradigm to open up a future trend in the design of transition metal dichalcogenides nanohybrids as superior catalysts. Abstract : For a noble cause : Transition metal dichalcogenide materials were developed as nanocatalysts with noble metal nanoparticles. The ReS2 nanosheets were decorated with individual Ru, Pd, Ag, Au, and Pt nanoparticles to form nanohybrids and were shown to be excellent catalysts. The Ru/ReS2 and Pd/ReS2 had a high catalytic performance towards the reduction of 4‐nitrophenol, 2‐nitroaniline, and nitrobenzene with high rate constants.