Versatile Covalent Postsynthetic Modification of Metal Organic Frameworks via Thermal Condensation for Fluoride Sensing in Waters

Having access to safe drinking water is one of the 17 sustainable development goals defined by the United Nations (UN). However, many settlements around the globe have limited access to drinkable water due to non-anthropogenic pollution of the water sources. One of those pollutants is fluoride, which can induce major health problems. In this manuscript, we report on a post synthetic functionalization of metal organic frameworks for the sensing of fluoride in water. The proposed thermal condensation methodology allows for a high yield of functionalization using few steps, reducing reagent costs and generating minimal by-products. We identified a Rhodamine B functionalized Al-BDC-NH2 metal organic framework as one particularly suitable for fluoride detection in water.

Supramolecular Organization of Melem for The Synthesis of Photoactive Porous Carbon Nitride Rods

Intrinsic defects and structural properties are two main factors influencing the photocatalytic performance of carbon nitride (CN) materials. Here, photoactive porous CN rods are fabricated through the thermal condensation of...

Efficient synthesis of porous graphitic carbon nitride nanosheets with different precursors via thermal condensation

Porous graphitic carbon nitride nanosheets were synthesized by the thermal condensation method using various precursors such as urea and melamine. Relevant properties of as-synthesized products were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and differential thermal analysis (DTA). The overall results suggest that the formation of porous graphitic carbon nitride nanosheets with a varied morphology can be achieved using diverse precursors through this process. Based on this product yield analysis, it is suggested that melamine and the lower synthesis temperature be selected to achieve the higher yield of graphitic carbon nitride production. The present work provides a facile and economic method for controlling the morphology and properties of graphitic carbon nitride products.

Facile synthesis of highly fluorescent free-standing films comprising graphitic carbon nitride (g-C3N4) nanolayers

The free-standing g-C3N4 films were fabricated by thermal condensation of C2H4N4 at 600 °C in a low pressure of Ar atmosphere. The as-synthesized g-C3N4 films exhibited stable and strong photoluminescence emission centered around 455–460 nm.

Bioinspired hierarchical cross-linked graphene–silicon nanofilms via synergistic interfacial interactions as integrated negative electrodes for high-performance lithium storage

Inspired by the relationship between nacre's unique structure and outstanding mechanical properties, a flexible and robust bioinspired rGO–Si–CMC–PAA film was prepared via a vacuum-assisted self-assembly process and thermal condensation reaction.