Preparation and characterization of Ag@AgCl-doped fly ash cenospheres for photocatalytic applications
MetadataShow full item record
A plasmonic photocatalyst composite based on Ag@AgCl and fly ash cenospheres was successfully prepared through a two-step method. X-ray diffraction analysis, scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy, and diffuse reflectance ultraviolet–visible spectroscopy were used to determine the structure and optical properties of the Ag@AgCl-doped fly ash cenospheres (denoted Ag@AgCl/FAC). SEM micrographs showed that Ag@AgCl was well deposited on the surface of the fly ash cenospheres. Photocatalytic experiment results showed that the degradation ratio increased with increasing dosage of Ag@AgCl/fly ash cenospheres; proper concentration of pollutant was important for the photocatalytic reaction for given amount of catalyst. Moreover, improved degradation of rhodamine B was observed at acidic conditions under visible-light irradiation. This excellent catalytic ability is mainly attributed to the formation of Ag nanoparticles on the surface of the fly ash cenospheres and the high separation efficiency of photoelectron–hole pairs. © 2016 Springer Science+Business Media Dordrecht
Showing items related by title, author, creator and subject.
Ash cenosphere formation, fragmentation and its contribution to particulate matter emission during solid fuels combustionLi, Yi (2012)Electricity generated from stationary coal-fired power stations has been playing an important role in powering the global economy and is projected to continue its key role in the foreseeable future. However, substantial ...
Further Investigation into the Formation Mechanism of Ash Cenospheres from an Australian Coal-Fired Power StationLi, Yi; Gao, Xiangpeng; Wu, Hongwei (2013)This study continues the investigation into the ash cenosphere formation mechanism using a series of narrow size-fractioned ash cenosphere samples separated from the fly ash of an Australian coal-fired power station. The ...
Ash Cenosphere from Solid Fuels Combustion. Part 1: An Investigation into Its Formation Mechanism Using Pyrite as a Model FuelLi, Yi; Wu, Hongwei (2012)This paper reports a systematic investigation into the fundamental formation mechanism of ash cenosphere during solid fuels combustion using pyrite as a model fuel. The combustion of pulverized pyrite particles (38-45 µm) ...