首页|Construction and preparation of coated Z-scheme NaGdF4:Nd~(3),Yb~(3),Tm~(3)@CdS-Pd@NiO photocatalyst with core-shell structure for organic pollutant degradation with synchronous hydrogen evolution
Construction and preparation of coated Z-scheme NaGdF4:Nd~(3),Yb~(3),Tm~(3)@CdS-Pd@NiO photocatalyst with core-shell structure for organic pollutant degradation with synchronous hydrogen evolution
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NSTL
A coated Z-scheme NaGdF4:Nd~(3),Yb~(3),Tm~(3)@CdS-Pd@NiO photocatalyst with core-shell structure is prepared by hydrothermal and coprecipitation methods.NaGdF4:Nd~(3),Yb~(3),Tm~(3)as excellent up-conversion luminescent material can convert infrared light into visible light,broadening the light response range of CdS.Pd nanorods act as conductive channels and co-catalysts,leading to successful construction of tided photocatalyst,increasing contact area between two monomer photocatalysts,promoting transfer of photo-generated electrons.It also provides a large oxidation surface for organic pollutant degradation.The performance of prepared photocatalyst is assessed by Congo red degradation and hydrogen production.The emission spectrum and energy conversion mechanism of NaGdF4:Nd~(3),Yb~(3),Tm~(3)are investigated.The photocatalyst with 3:1 NaGdF4:Nd~(3),Yb~(3),Tm~(3)@CdS-Pd and NiO mass ratio has a preeminent activity.Congo red degradation ratio and hydrogen pro-duction amount reach 92.48% and 653.06 μmol/g,respectively,under simulated sunlight irradiation for 180 min.The possible mechanism of organic pollutant degradation with synchronous hydrogen production caused by titled photocatalyst is proposed.
Z-scheme NaGdF4:Nd~(3)Yb~(3)Tm~(3)@CdS-Pd@NiO photocatalystCoated core-shell structurePalladium(Pd)nanorodsUp-conversion luminescencePhotocatalytic degradation with simultaneoushydrogen production
Yitong Lin、Taiyu Jin、Yu Liu
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College of Environment,Liaoning University,Shenyang 110036,PR China
College of Chemistry,Liaoning University,Shenyang 110036,PR China
NSTL
