研究目的
The synthesis of SrTiO3 with controlled morphology, high surface area, and enhanced photocatalytic activity for applications in photocatalytic degradation and H2 production.
研究成果
A series of SrTiO3 hierarchical structures with controlled morphologies including particle, golf-like, star-like, urchin-like, flower-like have been synthesized via a facile mixed solvothermal method. By adjusting the ratio of mixed solvent, SrTiO3 shows a well-controlled evolution of 3D self-assemble morphology. Compared with particle shaped ANPs and GLPs, micro-nano hierarchical structure including SLMs, ULMs, and FLMs exhibit much higher photocatalytic activities for the degradation of K2Cr2O7 and TC. Moreover, SLMs, ULMs, and FLMs superstructures exhibited superior photocatalytic performance in the photocatalytic H2 production under the optimized Pt loading amount. Remarkably, ULMs with a low Pt loading (0.075wt.%) shows the highest hydrogen evolution rate of 8.21 mmol·g-1·h-1 among our prepared samples.
研究不足
The technical and application constraints of the experiments include the limitation in the specific surface area of SrTiO3 materials (almost lower than 30 m2·g-1) which possibly limits further applications in many fields. Potential areas for optimization include developing more convenient and well-controlled strategies for the preparation of SrTiO3 materials with different morphologies.
