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One of the major challenges in chemistry confronted by the chemists is the replacement of conventional
homogeneous catalysts by heterogeneous catalysts for the development of green, sustainable and economical chemical
processes. Recently, carbon based nanocomposites have attracted the attention of scientists due to their unique physical and
chemical properties such as large surface area and pore volume, chemical inertness, high stability and high electrical
conductivity. These NCs have been employed in energy storage, electronic devices, sensors, environmental remediation etc.
Owing to the wide availability and low cost, carbon‐based‐materials have been utilized as supports for transition metals and
other materials. The carbon based NCs offers a number of advantages such as high stability, easy recovery, reusability with
often minimal leaching of metal ions, and green and sustainable approaches to heterogeneous catalysis for various organic
transformations. Hence, they can be used as the substitute of the existing catalyst used for heterogeneous catalysis in industries.
In this review, various processing methods for carbon based nanocomposites and their applications as heterogeneous catalyst
for organic transformations like hydrogenation, oxidation, coupling, and multi‐component reactions, have been discussed.