P06 超音波によって担持したコア・シェル型金・パラジウム二元金属ナノ粒子の二酸化チタン光触媒活性に対する助触媒効果(第II部,ポスター発表)

概要

論文の詳細を見る
A novel TiO_2 photocatalyst supporting Au-core/Pd-shell bimetallic nanoparticles was successfully prepared by sonochemical reduction method. Hydrogen evolution rate from ethanol aqueous solution over the photocatalyst was higher than those over the catalysts supporting random alloyed bimetallic nanoparticles and Au and Pd monometallic nanoparticles with the sane noble metal compositions. In the core-shell structured bimetallic nanoparticles, Au core effectively accumulates the photogenerated electrons and selectively denotes them to hydrogen ions. On the other hand, hydrogen permeative Pd shell restricts contact the Au active sites with species other than hydrogen ions. The segregation of the duties for noble metals enhances the photo evolution rates of hydrogen.
日本ソノケミストリー学会の論文
2008-12-05