▎ 摘　　要

NOVELTY - Manufacturing graphene nanofibers (GNFs) from cotton sources comprises: selecting soft and fluffy stable cotton fiber (CF) and tenfold cotton rope (CR) upon investigating CFs and CR to synthesize GNFs of different shape and size; immersing stable CF and tenfold CR into solution of ethyl and isopropyl alcohols, where the alcohol-based solution is used to develop rapid carbon skeleton and flexibility within GNFs; pyrolyzing alcohol-soaked CF and CR upon placing inside hydrothermal reactor at 150 degrees C for 5 hours, nucleation of skeleton starts for growth of graphene nanosheets, performing high temperature pyrolysis to hydrothermally treated CF and CR inside tube furnace in inert atmosphere of nitrogen gas at 800 degrees C with heating rate of 5 degrees C/minutes of 40 minutes to develop graphitic nature with skeleton of CF and CR; and characterizing obtained GNFs by RAMAN, Fourier-transform infrared spectroscopy, field emission scanning electron microscopy (FESEM) analysis and UV-visible spectroscopy. USE - The process is useful for manufacturing graphene nanofibers (GNFs) from cotton sources, where the GNFs are useful in energy conversion and storage applications, and as active electrode materials for the smother passage of charge transportation in photovoltaic wires (all claimed). ADVANTAGE - The process: utilizes pyrolysis techniques to develop scalable and green synthesis of GNFs; shows the applicability of alcoholic mixtures to develop flexible GNFs; shows GNF based electrode for dye sensitized solar cell wires; and shows comparison of two types of the GNFs and evaluation of their band gaps to use them in the field of energy applications.