Sonochemical deposition of ultrafine metallic Pt nanoparticles on CdS for efficient photocatalytic hydrogen evolution

Abstract

Ultrasonic irradiation drives the reduction of Pt4+ and tight adherence of the resulting metallic Pt nanoparticles to CdS to boost photocatalytic H2 evolution.

Prominent roles of Ni(OH)2 deposited on ZnIn2S4 microspheres in efficient charge separation and photocatalytic H2 evolution

“…[7][8][9] For an efficient photocatalytic H 2 production reaction, it is indispensable to load a noble metal such as Pt, Pd, Ag, or Au as a cocatalyst on the host semiconductors. [10][11][12][13] The noble metals as cocatalysts can not only facilitate the separation of electron-hole pairs over host semiconductor effectively, but also function as active sites for H 2 production. Nevertheless, the high cost and scarcity of these noble metals seriously hinder their practical application.…”

Controlled growth of ultrafine metal nanoparticles mediated by solid supports

“…There are three common ways to introduce nucleation and anchoring sites in supports: installing organic functional groups, heteroatom doping and creating defect sites. [30][31][32][33][34][35] Organic functional groups can bind the metal ions in the precursor solution. It is a common method to capture the metal ions and anchor the resulting UMNPs in organic or hybrid supports, such as metal organic frameworks (MOFs) and covalent organic frameworks (COFs).…”

Designing Microflowreactors for Photocatalysis Using Sonochemistry: A Systematic Review Article

“…Many researchers have taken advantage of ultrasound to immobilize nanoparticles. Recently, Liu et al worked on the deposition of metallic platinum nanoparticles on CdS for photocatalytic hydrogen evolution using ultrasound [39]. However, the development of a more adaptable system that is more synthetically feasible is needed [32].…”