查找使用阿拉丁产品的科研文献

Synthesis of hollow core-shell CdS@TiO2/Ni2P photocatalyst for enhancing hydrogen evolution and degradation of MB

Keliang Wu,Pengcheng Wu,Junfang Zhu,Chang Liu,Xuejun Dong,Jianning Wu,Guihua Meng,Kangbo Xu,Juan Hou,Zhiyong Liu,Xuhong Guo

During the photocatalytic production of hydrogen gas, close interface with a catalyst is very important. We designed a noble-metal-free photocatalytic system that is spatially separated to produce hydrogen by high frequency visible light. We used a new type of a catalyst consisting of hollow core-shell CdS@TiO 2 /Ni 2 P structures prepared using sacrificial template method. Photocatalytic decomposition of water was tested using this catalyst. Hydrogen production yield using 420 nm light was 14.80 mmol/g after 2.5 h and using Xe lamp with AM1.5G filter was 34.78 mmol/g after 2.5 h. Hollow core shell CdS@TiO 2 /Ni 2 P particles were more stable than hollow core shell CdS@TiO 2 /Pt structures because TiO 2 protected CdS from photo-corrosion. Combination of CdS and Ni 2 P increased absorption range of TiO 2 at 720 nm. Holes and electrons produced during the photo-reaction can migrate to the CdS on the inside and to the Ni 2 P on the outside of the TiO 2 protective coating. Such design exposes more surface, thus, increases hydrogen production.