Buscar recursos académicos

Photocatalysis uses semiconductors to convert sunlight into chemical energy. Recent reports have shown that plasmonic nanostructures can be used to extend semiconductor light absorption or to drive direct photocatalysis ...

Several forms of niobium oxide were prepared, including nanostructured mesoporous materials, and their acidity properties were comprehensively investigated and compared with commercially available materials. The composit...

Highlights Establishes a unified framework linking the origins, descriptors, and catalytic functions of polarisation in covalent organic frameworks (COFs). Systematically categorises polarisation engineering strategies i...

Abstract Photo-redox catalysis has emerged as a new generation of biochemical protocols in proximity labeling, noninvasive therapy, ultrafast activation. However, the well-developed photocatalysts cannot simultaneously p...

Abstract FLPClusters, which are structurally precise metal clusters incorporating Frustrated Lewis Pairs (FLPs), represent a promising class of FLP catalysts. Although FLPClusters have emerged only recently, their precis...

The research was aimed to use the residual asphaltic materials taken from northern refinery in the preparation of activated carbon by oxidation with V O5 in the presence of a stream of air for 3hrs at 350°C temp, .The r...

In this study, we present an effective chemo-enzymatic method for synthesizing di- and tetra-carboxyl–functionalized poly(ethylene glycol)s (PEGs) using Candida antarctica lipase B (CALB). PEG-diacid was synthesized th...

Illumination of noble metal nanostructures by electromagnetic radiation induces coherent oscillations of conductive electrons on their surfaces. These coherent oscillations of electrons, also known as localized surface p...

Polymerization of caprolactone using lipases from Candida antarctica B, Rhizomucor meihei, Candida rugosa, and Pseudomonas fluorescens is highly effective, with 97% conversion into polycaprolactone. Poly(propylene)-suppo...

Chemical equation presented Daily vitamins: A mild, general, and highly stereoselective Pd0-catalyzed cascade to the triene system of the hoi mone 1α,25-dihydroxyvitamin D3 and six representative analogues is reported. ...

Methanation of CO2 was studied over Ni-CeO2 based catalysts supported on Al2O3 prepared by two different strategies: simultaneous and successive impregnation. The CeO2 addition modifies the interaction of Ni with the sup...

Abstract Herein, Ru⁰/TiO₂ nanocomposites containing 0.5 wt% Ru were prepared via a simple wet-impregnation route followed by chemical reduction and were thoroughly characterized by XRD, FTIR, SEM, TEM, and EDS analys...

Molecular iodine was identified as an efficient catalyst for the cycloisomerization of conjugated dienals to substituted 2-cyclopentenones. DFT calculations suggested an unexpected concerted character for this cyclizatio...

Catalytic fast pyrolysis of sunflower seed shells was performed using a two-stage fixed bed reactor to produce partially deoxygenated bio-oils. Ketonization and aldol condensation reactions were performed in a dual bed r...

Catalytic methane decomposition (CMD) offers a direct pathway to CO2-free hydrogen by converting CH4 into H2 and solid carbon. However, its application is constrained by the need for efficient heat delivery to the cataly...

Abstract Stomata of plant leaves open to enable CO2 entry for photosynthesis and close when CO2 in the leaf is elevated. CO2 is thought to promote stomatal closure in part by activating the SLAC1 anion channel at the gua...

Abstract Per- and polyfluoroalkyl substances (PFAS) and microplastics (MPs) are certain types of persistent plastic contaminants that are a cause of concern to both the ecosystems and human health. The nanotechnologies o...

The characteristic oral environment – with its dynamic clearance, moisture, microbial load, and inflammatory potential – makes oral diseases highly prevalent and therapeutically challenging. Metal-organic frameworks ...

ABSTRACT Pyroelectric catalysis has shown promising prospects for sustainable energy generation and medical treatments. However, its potential is limited by intrinsically low pyroelectric coefficients and insufficient in...

Abstract The dual challenges of waste biomass disposal and escalating contamination by inorganic, organic, and emerging microplastic pollutants demand sustainable, circular remediation strategies. Biochar, a carbon-rich,...

Interweaving boron with metal atoms within a two-dimensional plane represents a promising strategy to fabricate unconventional boron networks. However, the practical synthesis and structural determination of such materia...

Dry synthesis is a highly versatile method for the fabrication of nanoporous metal films, since it enables easy and reproducible deposition of single or multi-layers of nanostructured materials that can find intriguing a...

Copper sites in proteins are designed to perform either electron transfer or redox catalysis. Type 1 and CuA sites are electron transfer hubs bound to a rigid protein fold that prevents binding of exogenous ligands and s...

The cytochrome P450 enzymes catalyze the hydroxylation of organic substrates by dioxygen. The high-potential reactive intermediate in cytochrome P450 catalysis, compound I (CI), has the capacity to deliver oxidizing equi...