Efficient Photocatalytic CO Reduction with High Selectivity for Ethanol by Synergistically Coupled MXene-Ceria and the Charge Carrier Dynamics.

The primary factors that govern the selectivity and efficacy of CO photoreduction are the degree of activation of CO on the active surface sites of photocatalysts and charge separation/transfer kinetics. In this context, the rational synthesis of heterostructured MXene-coupled CeO-based photocatalysts with different loading concentrations of TiCMXene via a one-step hydrothermal approach has been undertaken. These photocatalysts exhibit a shift in X-ray diffraction peaks to higher 2θ values and changes in stretching vibrations of 5 wt % TiCMXene/CeO(5-TC/Ce) that indicate interaction between TiCMXene and CeO.

Efficient Photocatalytic Reduction of Hexavalent Chromium by BiVO-Decorated MXene Photocatalysts and Their Charge Carrier Dynamics.

The synergistically co-catalyst-decorated -based heterostructured photocatalysts have been synthesized by a hydrothermal approach with varied loading concentrations of to drive the hexavalent chromium reduction efficiently. The formation of the heterostructured photocatalyst was confirmed by the appearance of X-ray diffraction (XRD) peaks corresponding to the monoclinic phase and and also the antisymmetric (834 cm) and symmetric stretching (715 cm) of tetrahedral VO and D (1330 cm) and G (1570 cm) bands corresponding to in the Raman spectrum. The worm-like structures of nanocrystals grew onto the lamellar sheets of , as shown by field emission scanning electron microscopy (FESEM), and has an increased surface area of 15.

Metal-free propargylation/aza-annulation approach to substituted β-carbolines and evaluation of their photophysical properties.

An efficient acid-catalyzed propargylation/aza-annulation sequence was developed under metal-free reaction conditions, thus leading to a one-pot synthesis of a variety of substituted β-carbolines starting from propargylic alcohols and indole 2-carbonyls. This versatile strategy was further extended to the synthesis of 5-azaindoles and 5-azabenzothiazoles. Optical properties suggested that manipulation of electron donor and acceptor moieties on β-carbolines has an impact on their ground and excited state electronic behavior.

Stipulating Low Production Cost Solar Cells All Set to Retail…!

Today's solar cells are exceptionally in demand whilst excess exploitation of natural fossil fuels. In this context, the first and second generation solar cells commercially available in market for more than decades however limitations in production cost and large-scale applications insist to generate inexpensive materials for fabrication. Thereby, organic materials based solar cells explored and emerging as third generation solar cells which possess flexibility, low cost and large-scale applications.

Light induced oxidation of an indoline derived system triggered spherical aggregates.

Indoline based donor-acceptor system (InBT) exhibits a colour transition from pink to orange to yellow in chloroform facilitated by the photo-oxidation of the N,N-dimethyl indoline of InBT and neutralized by chloride counter ions upon light irradiation at short and long range excitation wavelengths of 320 and 500 nm, which leads to spherical aggregates when subjected to methanol vapour diffusion (MVD).

Role of Co-Sensitizers in Dye-Sensitized Solar Cells.

Co-sensitization is a popular route towards improved efficiency and stability of dye-sensitized solar cells (DSSCs). In this context, the power conversion efficiency (PCE) values of DSSCs incorporating Ru- and porphyrin-based dyes can be improved from 8-11 % to 11-14 % after the addition of additives, co-adsorbents, and co-sensitizers that reduce aggregation and charge recombination in the device. Among the three supporting material types, co-sensitizers play a major role to enhance the performance and stability of DSSCs, which is requried for commercialization.