Effect of Reaction Conditions on the Characterization of Plasmon-Driven Surface Catalytic Reduction Reaction for Para-nitroaniline in a Liquid Condition

Optically Driven Gold Nanoparticles Seed Surface Bubble Nucleation in Plasmonic Suspension

“…Surface bubbles generated by photothermal effects are playing significant roles in a wide range of applications, such as micro-bubble logics(1), vapor generation (2)(3)(4), cancer therapy (5)(6)(7)(8)(9), plasmon-assisted catalysis (10)(11)(12)(13) and nanoparticle (NP) manipulation (14)(15)(16)(17) and deposition (18)(19)(20). To realize the photothermal effect, a light-absorbing substrate, such as silicon, thin-metallic layer and conducting oxide, is usually immersed in liquid to convert optical energy into thermal energy (15,16,18).…”

“…Surface bubbles generated by photothermal effects are playing significant roles in a wide range of applications, such as microbubble logics, vapor generation, − cancer therapy, − plasmon-assisted catalysis, − and nanoparticle (NP) manipulation − and deposition. − To realize the photothermal effect, a light-absorbing substrate, such as silicon, thin-metallic layer, and conducting oxide, is usually immersed in liquid to convert optical energy into thermal energy. ,, When the light intensity is sufficiently high to raise the temperature of the substrate above a threshold, a surface bubble can nucleate.…”

A P/N type silicon semiconductor loaded with silver nanoparticles used as a SERS substrate to selectively drive the coupling reaction induced by surface plasmons

“…Since under the catalysis of plasmons, the reduction reaction of the nitro group had better SERS sensitivity compared with the oxidation reaction of the amino group. 18 The SERS signal, for which the probe molecule was PATP, was detected at 2.5 mV (PNTP, 0.5 mV). Mapping technology was used to randomly select 36 points, and a green light source with an excitation wavelength of 532 nm was used.…”

“…13 Recent studies have shown that the reaction mechanisms of the typical surface plasmon induce the oxidation reaction of p-aminothiophenol (PATP), and the reduction reaction of p-nitrothiophenol (PNTP) to p-dimercaptoazobenzene (DMAB). [14][15][16][17][18] The quality of the SERS signal is closely related to the performance of the SERS substrate. Because the metal nanoparticles prepared by the sol method are easily clustered in solution, the reproduction performance in Raman spectroscopy is poor, and inexpensive and easily available semiconductor materials have also been tried as SERS substrate materials.…”

“…28,29 In this system, the substrate morphology and synthesis process can affect the detection performance of SERS. 18,30,31 Therefore, this paper provides a method for preparing SERS composite substrates with strong and reusable silicon semiconductorsilver nanoparticles synthesized by the self-assembly method, and analyses the regulation process of the electron (hole) caused by the optical drive charge transfer.…”