Nanospherical like reduced graphene oxide decorated TiO2 nanoparticles: an advanced catalyst for the hydrogen evolution reaction

作者：Chen, Dejian; Zou, Liling; Li, Shunxing^*; Zheng, Fengying

来源：Scientific Reports, 2016, 6(1): 20335.

DOI：10.1038/srep20335

• ENHANCED PHOTOCATALYTIC ACTIVITY
• FACILE FABRICATION
• WATER
• NANOCOMPOSITES
• OXIDATION
• COCATALYSTS
• SEPARATION
• BEHAVIOR
• TITANIA

Modification of titanium dioxide (TiO2) for H-2 generation is a grand challenge due to its high chemical inertness, large bandgap, narrow light-response range and rapid recombination of electrons and holes. Herein, we report a simple process to prepare nanospherical like reduced graphene oxide (NS-rGO) decorated TiO2 nanoparticles (NS-rGO/TiO2) as photocatalysts. This modified TiO2 sample exhibits remarkably significant improvement on visible light absorption, narrow band gap and efficient charge collection and separation. The photocatalytic H-2 production rate of NS-rGO/TiO2 is high as 13996 mu mol g(-1) h(-1), which exceeds that obtained on TiO2 alone and TiO2 with parallel graphene sheets by 3.45 and 3.05 times, respectively. This improvement is due to the presence of NS-rGO as an electron collector and transporter. The geometry of NS-rGO should be effective in the design of a graphene/TiO2 composite for photocatalytic applications.

• 出版日期2016-2-1
• 单位闽南师范大学