The insertion of metal cocatalysts into semiconductor photocatalysts,which can promote electron–hole separation and provide additional reaction sites,is a popularly used approach to improve photocatalytic efficiency....The insertion of metal cocatalysts into semiconductor photocatalysts,which can promote electron–hole separation and provide additional reaction sites,is a popularly used approach to improve photocatalytic efficiency.In this article,we demonstrate a facile synthetic method for Cu/TiO_(2) photocatalysts with hollow structures by templating on metal–organic frameworks(MOFs).The Cu_(3)(BTC)_(2) MOF octahedral microcrystals enwrapped by TiO_(2) shells serve as a Cu precursor for the in situ generation of Cu nanoparticles on the TiO_(2) photocatalyst.This method offers the versatility to tailor the photocatalyst configurations(including compositions,crystal phases,cocatalyst sizes,etc.)by simply altering the treatment conditions on MOF cores(e.g.,room-temperature etching,simultaneous etching and reduction,and high-temperature calcination reduction).Enabled by the varied configurations,the synthesized octahedral-shell photocatalysts exhibit remarkably different performances in charge separation and photocatalytic hydrogen production,allowing the identification of an optimal design for photocatalysis.展开更多
基金financially supported by the 973 Program(no.2014CB848900)NSFC(no.21471141)+1 种基金Recruitment Program of Global Experts,CAS Hundred Talent Programthe Fundamental Research Funds for the Central Universities(no.WK2060190025,WK2310000035).
文摘The insertion of metal cocatalysts into semiconductor photocatalysts,which can promote electron–hole separation and provide additional reaction sites,is a popularly used approach to improve photocatalytic efficiency.In this article,we demonstrate a facile synthetic method for Cu/TiO_(2) photocatalysts with hollow structures by templating on metal–organic frameworks(MOFs).The Cu_(3)(BTC)_(2) MOF octahedral microcrystals enwrapped by TiO_(2) shells serve as a Cu precursor for the in situ generation of Cu nanoparticles on the TiO_(2) photocatalyst.This method offers the versatility to tailor the photocatalyst configurations(including compositions,crystal phases,cocatalyst sizes,etc.)by simply altering the treatment conditions on MOF cores(e.g.,room-temperature etching,simultaneous etching and reduction,and high-temperature calcination reduction).Enabled by the varied configurations,the synthesized octahedral-shell photocatalysts exhibit remarkably different performances in charge separation and photocatalytic hydrogen production,allowing the identification of an optimal design for photocatalysis.
