Open Accessλ-MnO<sub>2</sub> Thin Films with Sponge-Like Structures: Synthesis, Characterization and Physiochemical Applications
Author(s) -
Khalid Abdelazez Mohamed Ahmed
Publication year - 2021
Publication title -
indonesian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.273
H-Index - 14
eISSN - 2460-1578
pISSN - 1411-9420
DOI - 10.22146/ijc.64392
Subject(s) - chemistry , electrochemistry , cyclic voltammetry , x ray photoelectron spectroscopy , manganese , desorption , methyl orange , chemical engineering , hydrothermal circulation , lithium (medication) , adsorption , hydrothermal synthesis , inorganic chemistry , electrode , organic chemistry , catalysis , medicine , photocatalysis , engineering , endocrinology
Manganese dioxide has acquired significant research attentiveness in many fields over the past years because of its exciting physicochemical features. The magnetized λ-MnO2 thin films with sponge-like structures (TSLs) were prepared by hydrothermal-soft chemical and delithiation-lithium manganese process. The XRD, XPS, EDX, FESEM, TEM, HR-TEM, and N2 adsorption-desorption techniques were used to characterize the as-prepared product’s structure composition, morphology, and surface area. The particle growth details of λ-MnO2 are postulated by the oxidation-ionic change-delithiation (OID) mechanism. The electrochemical property was analyzed by galvanostatic discharge-charging, electrochemical impedance spectrum (EIS), and cyclic voltammetry (CV). Special attention of λ-MnO2 S.L.s is given to their applications in the degradation of methyl orange (MO) from wastewater under O2 air bubble pump and cathodic substance in the lithium-ion battery. Due to the peculiarity crystal form and morphology face, the λ-MnO2 TSLs might be promisingly applied in the various physicochemical area.