Efficient imidazolium ionic liquid as a tri-functional robust catalyst for chemical fixation of CO into cyclic carbonates.

The recent increase in CO levels has had an extensive impact on the environment; hence an effective catalyst for chemical CO fixation into value-added products is demanded. This work demonstrates a simple approach towards the chemical fixation of CO to cyclic carbonates without solvent, metal and additives using one-pot synthesized tri-functional-imidazolium bromide ionic liquid. Herein, synthesized tri-functional-imidazolium-based ionic liquids, namely 3-(2-hydroxyethyl)-1-vinyl-1H-imidazole-3-ium bromide ([VIMEtOH][Br] (24 and 72 h)), 3-(2-hydroxyethyl)-1-vinyl-1H-imidazole-3-ium hydroxyl ([VIMEtOH][OH]) and poly 3-(2-hydroxyethyl)-1-vinyl-1H-imidazole-3-ium bromide (poly [VIMEtOH][Br]), were used for the comprehensive investigation of chemical fixation of CO into cyclic carbonates and their physiochemical properties.

Synergetic effect of ZnCoO/inorganic salt as a sustainable catalyst system for CO utilization.

Currently, it is essential to consider the rapidly increasing emission of CO into the atmosphere, causing major environmental issues such as climate change and global warming. In this work, we have developed the binary catalyst system (ZnCoO/inorganic salt) for chemical fixation of CO with epoxides into cyclic carbonates without solvent, and all reactions were performed on a large scale using a 100 ml batch reactor. Two mesoporous catalysts of ZnCoO with different architecture, such as flakes (ZnCo-F) and spheres (ZnCo-S) were synthesized and utilized as a heterogeneous catalyst for cycloaddition reaction.

Efficient decontamination of toxic phenol pollutant using LaCOOH nanowires decorated AgPO hierarchical composites mediated by metallic Ag.

With the aim to develop an eco-friendly, efficient and stable photocatalyst, the present work reports the synthesis of AgPO/LaCOOH (AP/LC) heterojunction photocatalysts. Different weight ratios of AP/(x wt% LC) were tested to find the best composition for superior photocatalytic activity for dye pollutant degradation. AP/LC (20 wt%) revealed a superior photocatalytic activity.