The present review summarizes the recent development and challenges in visible light responsive metal oxide based photocatalysts for water splitting.

Review: summary on single enzyme, multi enzymatic and semiconducting nanomaterial integrated enzymatic systems for CO2 conversion to clean fuels; 134 refs.

No abstract

No abstract

No abstract

The present study aims to investigate and develop a cheap adsorption method for color removal from wastewater using water-washed manganese nodule leached residues (WMNLR) as adsorbent. The method was employed for the removal of methylene blue (MB), and the influence of various factors such as adsorbent dose, adsorbate concentration, electrolytes (NaCl, Na2HPO4, Na2SO4, NaNO3, and Na2CO3), temperature, and pH was studied. The equilibrium of adsorption was modeled by using the Langmuir and Freundlich isotherm models; the kinetic parameters and intraparticle diffusion were also then determined for the MB−WMNLR system. Kinetic data were well described by the pseudo second-order model. The thermodynamics of the MB−WMNLR system indicates spontaneous and endothermic nature of the process. The results in this study indicated that WMNLR was an attractive candidate for removing MB (98%), which could be reused up to four times without significant loss in its adsorption capacity.

No abstract

Room temperature and atmospheric pressure assisted hydrogenation of aromatic nitro compounds is achieved with a high proficiency over Schiff base Pt(II) complex supported montmorillonite. Usually hydrogenation reactions require severe conditions to crop up. However, our catalyst could alter these extremities exhibiting excellent yields with 100% selectivity. The catalyst was prepared by intercalating Schiff base Pt(II) complex into montmorillonite by simple cation exchange mechanism. The intercalation of the complex inside the clay matrix was supported by various characterization techniques like X-ray diffraction, thermogravimetric and differential thermogravimetric analysis, BET surface area measurement, UVÀvis diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy (FT-IR), and atomic absorption spectroscopy. The stability of the catalyst during the course of the reaction was confirmed from its post catalytic FT-IR analysis. The catalyst could be reused three times without noticeable loss of its catalytic activity.