Graphitic carbon nitride (g-C3N4) stands as a prominent and sustainable photocatalyst, offering a transformative solution to pressing environmental and energy challenges. This review article provides a comprehensive examination of g-C3N4,...

https://pubs.rsc.org/en/content/articlepdf/2024/su/d3su00382e

Graphitic Carbon Nitride (g-C3N4) as an Emerging Photocatalyst for Sustainable Environmental Applications: A Comprehensive Review

Graphitic carbon nitride (g-C 3 N 4 )-based materials have emerged as promising photocatalysts due to their unique band structure, excellent stability, and environmental friendliness. 

Unveiling the photocatalytic potential of graphitic carbon nitride (g-C3N4): a state-of-the-art review

Over the past twenty years, a wide range of metal–organic frameworks (MOFs) has been developed. MOFs exhibit interesting behaviors owing to the complex interactions between metal ions or clusters and organic linkers through metal–ligand coordination bonds. The crystalline order and atomic arrangement of MOFs result in porous network structures with a high degree of flexibility for hosting a wide range of guest molecules. The modularity of MOFs makes them highly customizable, offering possibilities beyond the scope of typical porous materials, such as activated carbon, silica, and zeolites. Recently, chiral MOFs have attracted research attention for asymmetric applications because a wide range of properties can be obtained by carefully selecting their metal and ligand constituents. In addition, the complex interaction between guest molecules and the underlying framework enables novel functionalities. The interdisciplinary field of chiral MOFs includes elements of chirality chemistry, coordination chemistry, and material chemistry, and their applications extend to chemistry, physics, optics, medicine, pharmacology, crystal engineering, and environmental science. This comprehensive review systematically summarizes the recent advancements in chiral MOFs, including the design strategies, synthesis methods, and cutting-edge applications. The main goal of this review article was to provide readers with a deep understanding of chiral MOF chemistry to stimulate research initiatives toward the rational development of multifunctional chiral MOFs with industrial relevance. 

Beyond conventional: Role of chiral metal–organic frameworks in asymmetric scenarios

Asymmetric catalysis refers to the process in which less than stoichiometric concentrations of the catalyst are used for synthesis of one enantiomer preferentially over the other. This review article provides a concise summary of the most current applications, methodologies, and approaches to asymmetric catalysis under heterogeneous conditions. The technique allows subsequent use of chiral catalysts without diminishing activity or enantioselectivity. In this review article, numerous examples of industrial and laboratory chemo catalyzed processes will be presented, such as hydrogenation, epoxidation, Aldol, Diels-Alder reactions, diethylzinc addition, and ketone reduction. There is a general phenomenon called the confinement effect on surfaces and pores which can increase or decrease enantioselectivity. 

Shaping enantiochemistry: Recent advances in enantioselective reactions via heterogeneous chiral catalysis

Architecting High-Performance Photocatalysts: A Review of Modified 2D/2D Graphene/g-C3N4 Heterostructures

Herein, Ni and NiRe catalysts supported on mesoporous MCM-41 were synthesized through ammonia evaporation (AE) and impregnation (IM) routes to explore structure–activity correlations in the hydrogenation of levulinic acid (LA)...

Design of Rhenium-Decorated Mesoporous Nickel Phyllosilicate-Derived Ni-Re/MCM-41 Catalyst for Efficient Hydrogenation of Levulinic Acid to γ-Valerolactone

In the present work, we report a ground-breaking strategy in the development of spick-and-span protocol for the synthesis of l-proline chiral scaffold tethered onto the silica matrix i.e., l-proline-(3°amine)-f-SiO2 via the reaction between l- proline methyl ester and N-methyl aminopropyl silica with absolutely no use of protecting/ deprotecting groups. The as-synthesized catalyst was well corroborated through various physicochemical techniques such as 13C CP MAS NMR, X-ray diffraction (XRD), HRTEM, N2 adsorption−desorption isotherms, elemental analysis and FT-IR spectral studies. Emphatically, l-proline-(3°amine)-f-SiO2 significantly promoted an asymmetric aldol reaction under ambient conditions with no use of redundant organic solvent, bestowing unprecedented activity with 100% conversion and (ee) > 99% enantioselectivity of S-isomer. Moreover, the as-synthesized catalyst was effortlessly recycled seven consecutive times with absolutely zero loss of activity as well. 

Spick-and-span protocol for designing of silica-supported enantioselective organocatalyst for the asymmetric aldol reaction

Lithium-Doped Graphitic Carbon Nitride: Optimized Design for Visible-Light Photocatalytic Application

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