Robust dehydrofluorination of HFC-245fa to HFO-1234ze VOFx formation over a non-oxalic acid assisted VO/γ-AlO catalyst.

The demand for trans-1,3,3,3-tetrafluoropropene [HFO-1234ze(E)] as a next-generation, low-global-warming-potential (GWP) refrigerant is rising due to international restrictions on high-GWP refrigerants like chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs). Catalytic dehydrofluorination of HFC-245fa offers a viable synthesis route for the production of HFO-1234ze(E), but the catalyst degradation under harsh acidic conditions remains a major challenge. In this study, a highly stable γ-AlO supported catalyst was developed for efficient dehydrofluorination with vanadium species exhibiting the highest activity among the screened metal ions Ni, V, Zn, La, Fe, Mn and Cu.

Controllable synthesis of semiconducting anatase TiO nanostructures for visible light driven photocatalytic degradation of crystal violet and methylene blue dye.

The colorant dyes represent significant sources of non-aesthetic contamination and have the potential to generate hazardous byproducts via processes such as oxidation, hydrolysis, or other chemical transformations. Consequently, it is imperative to eliminate them from the water before their introduction into the ecosystem. In this study, we have been synthesised anatase TiO photocatalyst by simple chemical co-precipitation method at low temperatures.

Efficient hydrogen evolution via neutral water electrolysis using nanocrystalline TiO electrocatalyst.

Significant efforts have been focused on the development of non-noble metal electrocatalysts for efficient production of green hydrogen using renewable energy sources such as water and sunlight. Various transition metal oxides have been explored as promising candidates for hydrogen evolution reactions (HER), attracting considerable attention in the field of water splitting. In this study, we report the synthesis of anatase phase TiO nanoparticles (NPs) with a crystallite size of 6.

Revolutionizing microorganism inactivation: Magnetic nanomaterials in sustainable photocatalytic disinfection.

The rapid emergence of antibiotic-resistant microorganisms and the demand for sustainable water purification methods have spurred research into advanced disinfection, with photocatalysis as a promising approach. This study explores magnetic nanomaterials as catalysts in photocatalytic processes for microorganism inactivation. Magnetic nanoparticles and composites, due to their unique properties, are promising for enhancing photocatalytic disinfection.

Multi-walled carbon-nanotube-decorated tungsten ditelluride nanostars as anode material for lithium-ion batteries.

Multi-walled carbon-nanotube (MWCNT)-decorated WTe nanostars (WTe@CNT nanocomposites) are to be employed for the first time as anode candidates in the development of lithium-ion (Li-ion) batteries. WTe@CNT nanocomposites deliver a high discharge capacity of 1097, 475, 439, 408, 395 and 381 mA h g with an increasing current density of 100, 200, 400, 600, 800 and 1000 mA g, respectively, while WTe nanostars exhibit a reversible capacity of 655, 402, 400, 362, 290 and 197 mA h g with the aforementioned current densities. Furthermore, WTe@CNT nanocomposites exhibit a superior reversible capacity of 592 mA h g at 500 mA g with a capacity retention of 100% achieved over 500 cycles, while bare WTe nanostars deliver ∼85 mA h g over 350 cycles.