Recommanded Product: Pyridine-4-thiol. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Pyridine-4-thiol, is researched, Molecular C5H5NS, CAS is 4556-23-4, about MoS2/graphene van der Waals heterojunctions combined with two-layered Au NP for SERS and catalysis analyse. Author is Lu, Weixi; Liu, Lu; Zhu, Tiying; Li, Zhaoxiang; Shao, Mingrui; Zhang, Chao; Yu, Jing; Zhao, Xiaofei; Yang, Cheng; Li, Zhen.
MoS2-plasmonic hybrid platforms have attracted significant interest in surfaceenhanced Raman scattering (SERS) and plasmon-driven photocatalysis. However, direct contact between the metal and MoS2 creates strain that deteriorates the electron transport across the metal/ MoS2 interfaces, which would affect the SERS effect and the catalytic performance. Here, the MoS2/graphene van der Waals heterojunctions (vdWHs) were fabricated and combined with two-layered gold nanoparticles (Au NP) for SERS and plasmon-driven photocatalysis analyze. The graphene film is introduced to provide an effective buffer layer between Au NP and MoS2, which not only eliminates the inhomogeneous contact on MoS2 but also benefits the electron transfer. The substrate exhibits excellent SERS capability realizing ultra-sensitive detection for 4-pyridinethiol mols. Also, the surface catalytic reaction of p-nitrothiophenol (PNTP) to p,p-dimercaptobenzene (DMAB) conversion was in situ monitored, demonstrating that the vdWHs-plasmonic hybrid could effectively accelerate reaction process. The mechanism of the SERS and catalytic behaviors are investigated via experiments combined with theor. simulations (finite element method and quantum chem. calculations).
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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts