Fig. 2
From: Mesoporous Nickel Oxide (NiO) Nanopetals for Ultrasensitive Glucose Sensing
Constituent analysis of the fabricated NiO nanopetals using XPS a survey scan, b deep scan of 2p Ni, c XRD for the structural analysis, and d surface area and textual study using BET isotherm measurement by N2 adsorption/desorption