Microwave-assisted hydrothermal solution process for accelerated formation of 3D hierarchical flowery anatase-TiO2 microspheres with excellent photocatalytic activity
文献情報
Praveen Kumar Lavudya, SuryaBindu Sesha Devarakonda, Harita Pant, Sarah Geo, Avijit Tudu, Vadali Venkata Satya Siva Srikanth, Rajanikanth Ammanabrolu
A microwave-assisted hydrothermal solution synthesis methodology is used to prepare 3D hierarchical flowery TiO2 microspheres quickly and without calcination. The X-ray diffraction analysis showed that the microspheres are crystallized in the anatase form. Scanning electron microscopy showed that the anatase 3D hierarchical flowery TiO2 microspheres comprised many nm-thick petal-like features evenly distributed in each microsphere. The use of microwaves (for only 10 min at 200 W) acted as the additional source of energy that resulted in the accelerated growth of flowery TiO2 microspheres that otherwise would require long durations to form under only hydrothermal conditions. The microspheres exhibited a large specific surface area of 87.58 m2 g−1 and unique pore characteristics, making them suitable for photocatalysis. In this context, the measured photodegradation efficiency of the 3D hierarchical flowery anatase-TiO2 microspheres in degrading methylene blue dye was as high as 98%.
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CrystEngComm

CrystEngComm is the forum for the design and understanding of crystalline materials. We welcome studies on the investigation of molecular behaviour within crystals, control of nucleation and crystal growth, engineering of crystal structures, and construction of crystalline materials with tuneable properties and functions. We publish hypothesis-driven research into… how crystal design affects thermodynamics, phase transitional behaviours, polymorphism, morphology control, solid state reactivity (crystal-crystal solution-crystal, and gas-crystal reactions), optoelectronics, ferroelectric materials, non-linear optics, molecular and bulk magnetism, conductivity and quantum computing, catalysis, absorption and desorption, and mechanical properties. Using Techniques and methods including… Single crystal and powder X-ray, electron, and neutron diffraction, solid-state spectroscopy, spectrometry, and microscopy, modelling and data mining, and empirical, semi-empirical and ab-initio theoretical evaluations. On crystalline and solid-state materials. We particularly welcome work on MOFs, coordination polymers, nanocrystals, host-guest and multi-component molecular materials. We also accept work on peptides and liquid crystals. All papers should involve the use or development of a design or optimisation strategy. Routine structural reports or crystal morphology descriptions, even when combined with an analysis of properties or potential applications, are generally considered to be outside the scope of the journal and are unlikely to be accepted.