“…Further, with the emergence of field of nanochemistry, and due to its distinct variable oxidation states (Cu 0 , Cu I , Cu II , Cu III ), copper based nanomaterial found many application in diverse areas such as catalysis viz. electrocatalysis, photocatalysis and organic transformation ( Chen et al., 2021 ; Dong et al., 2019 ; Gawande et al., 2016 ; Ojha et al., 2017 ; Sambiagio et al., 2014 ; Shi and Buchwald, 2015 ), plant biology ( Lamichhane et al., 2018 ; Liu et al., 2018 ; Panagos et al., 2018 ), medicine ( Ahmedova et al., 2018 ; Mallick and Sabui, 2021 ) and environment remediation ( de Sousa et al., 2019a ; Fang and Guo, 2018 ). However, the pyrophoric nature of Cu 0 nanomaterial due to its high sensitivity towards O 2 and H 2 O restrict their application in various fields like optics and electronics etc ( Gawande et al., 2016 ).…”