Unraveling the structural and morphological stability of oxygen vacancy engineered leaf-templated CaTiO3 towards photocatalytic H2 evolution and N2 fixation reactions
Literature Information
Ashish Kumar, Manish Kumar, Vempuluru Navakoteswara Rao, Muthukonda Venkatakrishnan Shankar, Saswata Bhattacharya, Venkata Krishnan
The investigation of the structural and morphological stability of leaf-templated and oxygen vacancy engineered materials is of great importance along with the detailed study of catalytically active sites. In this work, oxygen vacancy engineered leaf-templated CaTiO3 materials have been synthesized by using NaBH4 as a reductant and the formation of oxygen vacancies was confirmed by using different spectroscopic and morphological techniques. Leaf-templated CaTiO3 with the optimum amount of oxygen vacancies showed improved photocatalytic H2 evolution and N2 fixation abilities in comparison to pristine CaTiO3. Density functional theory calculations suggested that the O-vacancies present in the TiO2 plane played a crucial role in enhancing the photocatalytic performance than the O-vacancies present in the CaO plane of CaTiO3. The optimized material showed good structural stability but with a loss in morphological features. It is concluded that the benefits of efficient light absorption by the three-dimensional morphology of leaf-templated semiconductor materials could not be utilized in the studied solid–liquid binary phase reactions. The enhanced photocatalytic performance could solely be attributed to the optimum oxygen vacancy sites, which promote the surface reactions and improve the separation of photogenerated charge carriers. This work is expected to provide a future direction in the smart design of application-oriented three-dimensional photocatalysts and other materials.
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Journal of Materials Chemistry A

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment










![N-[2,6-Di(9-anthryl)-4-oxido-8,9,10,11,12,13,14,15-octahydrodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl]-1,1,1-trifluoromethanesulfonamide structure N-[2,6-Di(9-anthryl)-4-oxido-8,9,10,11,12,13,14,15-octahydrodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl]-1,1,1-trifluoromethanesulfonamide structure](https://static.chemtradehub.com/structs/122/1227374-64-2-cdb5.webp)



