The design and development of a highly robust catalyst for energy production and environmental abetment are gaining much attention in the field of visible-light-driven catalysis.This work demonstrates the fabrication ...The design and development of a highly robust catalyst for energy production and environmental abetment are gaining much attention in the field of visible-light-driven catalysis.This work demonstrates the fabrication of a series of hierarchical macroporous mixed-phase TiO_(2)on the surface of B-doped g-C_(3)N_(4)(BCN).The physicochemical properties such as crystallinity,morphology,chemical environment,and optical and electronic properties of the as-synthesized materials were analysed by using different analytical techniques.PXRD and HRTEM data revealed the growth of mixed-phase TiO_(2)(anatase and rutile)on the BCN surface,mimicking P25 in the case of the best photocatalyst(TBCN-8).The catalytic activity of the as-synthesized materials was tested towards H2O_(2)production(110μmol h-1)and phenol oxidation(87% of 20 ppm phenol solution)under visible light.Higher photocurrent,lower impedance arc,and lower PL intensity suggest a lower electron-hole recombination rate in the case of TBCN-8,elucidating the best catalytic performance by the material.This work validates the facile fabrication of macroporous TiO_(2)/BCN nanocomposites and their visible-light-driven catalytic activity based on both the p-n heterojunction and Z-scheme mechanism.展开更多
文摘The design and development of a highly robust catalyst for energy production and environmental abetment are gaining much attention in the field of visible-light-driven catalysis.This work demonstrates the fabrication of a series of hierarchical macroporous mixed-phase TiO_(2)on the surface of B-doped g-C_(3)N_(4)(BCN).The physicochemical properties such as crystallinity,morphology,chemical environment,and optical and electronic properties of the as-synthesized materials were analysed by using different analytical techniques.PXRD and HRTEM data revealed the growth of mixed-phase TiO_(2)(anatase and rutile)on the BCN surface,mimicking P25 in the case of the best photocatalyst(TBCN-8).The catalytic activity of the as-synthesized materials was tested towards H2O_(2)production(110μmol h-1)and phenol oxidation(87% of 20 ppm phenol solution)under visible light.Higher photocurrent,lower impedance arc,and lower PL intensity suggest a lower electron-hole recombination rate in the case of TBCN-8,elucidating the best catalytic performance by the material.This work validates the facile fabrication of macroporous TiO_(2)/BCN nanocomposites and their visible-light-driven catalytic activity based on both the p-n heterojunction and Z-scheme mechanism.
