Lead-Free CsAgBiCl Double Perovskite: Experimental and Theoretical Insights into the Self-Trapping for Optoelectronic Applications.

Lead-free double perovskites (DPs) will emerge as viable and environmentally safe substitutes for Pb-halide perovskites, demonstrating stability and nontoxicity if their optoelectronic property is greatly improved. Doping has been experimentally validated as a powerful tool for enhancing optoelectronic properties and concurrently reducing the defect state density in DP materials. Fundamental understanding of the optical properties of DPs, particularly the self-trapped exciton (STEs) dynamics, plays a critical role in a range of optoelectronic applications.

Possible handle for broadening the catalysis regime towards low temperatures: proof of concept and mechanistic studies with CO oxidation on surface modified Pd-TiO.

The present work demonstrates the effect of temperature-dependent surface modification (SM) treatment and its influence in broadening the catalysis regime with Pd-TiO catalysts prepared by various methods. Due to SM induced changes, a shift in the onset of CO oxidation activity as well as broadening of the oxidation catalysis regime by 30 to 65 K to lower temperatures is observed compared to the temperature required for virgin counterparts. SM carried out at 523 K for Pd-TiO exhibits the lowest onset (10% CO production - ) and for CO oxidation at 360 and 392 K, respectively, while its virgin counterpart shows and at 393 and 433 K, respectively.

Selective and Generic Photocatalytic Oxidation of Alcohol with Pd-TiO Thin Films: Butanols to Butanal/Butanone with Different Morphologies of Pd and 0.5θ -Pd Counterparts.

The present study reports on the photocatalytic oxidation of butanols to butanal/butanone using thin film form of facet-dependent nano-Pd supported on commercial TiO under one-sun condition and demonstrates the generic nature. Pd-nanocube (Pd (100)), Pd-truncated octahedron (Pd (100) and (111)), polycrystalline (Pd ), and their counterparts with half-a-monolayer Pt-coated on Pd (0.5θ -Pd)) have been used as co-catalyst.

Nanostructured Co-doped BiVO for efficient and sustainable photoelectrochemical chlorine evolution from simulated sea-water.

The co-production of hydrogen and chlorine from sea-water splitting could be a potential, sustainable and attractive route by any method. However, challenges to overcome are many, and critically, the sustainability and operating potential of the electrocatalyst are important. In this work, we report on Co-doping in the BiVO (Co-BV) crystal lattice and employed the same as the photoanode; Co-BV exhibits a photocurrent of 190 μA cm at 1.