Graphene, attributable to its exceptional
electrical, chemical,
physical, mechanical, thermal, structural, and optical characteristics,
has evolved into a remarkable and revolutionary substance with which
scientists are tinkering and molding its various forms. Currently,
as greener resources are more approachable, for environmental and
human health reasons, researchers are now employing diverse forms
of natural resources, such as plant resources (flowers, wood, leaves,
etc.), edibles (fruits, vegetables, cookies, chocolate, coffee, tea,
etc.), biowaste, or any other kind of natural resources, by using
different methods for their synthesis, such as the hydrothermal method,
chemical vapor deposition, thermal exfoliation, freeze-drying, and
so on, for framing different forms of graphene or its hybrids or even
for the synthesis of graphene itself. In this review, we highlight
several natural resources along with the biowaste materials to fabricate
widely approachable graphenes which can also be transformed into different
forms to make them more environmentally protected. We included here
the safer synthetic processes, as well as many sectors where graphene
and its various forms have intriguing potential. Future graphene research
is anticipating new paths as the demand for the protection of the
environment and sustainable alternatives is increasing.
