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Efficient visible-light photocatalytic degradation system assisted by conventional Pd catalysis.


ABSTRACT: Different approaches like doping and sensitization have been used to develop photocatalysts that can lead to high reactivity under visible-light illumination, which would allow efficient utilization of solar irradiation and even interior lighting. We demonstrated a conceptually different approach by changing reaction route via introducing the idea of conventional Pd catalysis used in cross-coupling reactions into photocatalysis. The -O-Pd-Cl surface species modified on Ni-doped TiO2 can play a role the same as that in chemical catalysis, resulting in remarkably enhanced photocatalytic activity under visible-light irradiation. For instance, Pd/Ni-TiO2 has much higher activity than N-TiO2 (about 3 ~ 9 times for all of the 4-XP systems) upon irradiation with wavelength of 420?nm. The catalytically active Pd(0) is achieved by reduction of photogenerated electrons from Ni-TiO2. Given high efficient, stable Pd catalysts or other suitable chemical catalysts, this concept may enable realization of the practical applications of photocatalysis.

SUBMITTER: Yu Y 

PROVIDER: S-EPMC5380333 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature

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Efficient visible-light photocatalytic degradation system assisted by conventional Pd catalysis.

Yu Yanlong Y   He Tao T   Guo Lingju L   Yang Yajun Y   Guo Limei L   Tang Yue Y   Cao Yaan Y  

Scientific reports 20150331


Different approaches like doping and sensitization have been used to develop photocatalysts that can lead to high reactivity under visible-light illumination, which would allow efficient utilization of solar irradiation and even interior lighting. We demonstrated a conceptually different approach by changing reaction route via introducing the idea of conventional Pd catalysis used in cross-coupling reactions into photocatalysis. The -O-Pd-Cl surface species modified on Ni-doped TiO2 can play a r  ...[more]

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