A Review of Recent Progress on Nano MnO 2 : Synthesis, Surface Modification and Applications
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A Review of Recent Progress on Nano MnO2: Synthesis, Surface Modification and Applications Ayonbala Baral1 · Lakkoji Satish2 · Guoying Zhang3 · Shaohua Ju1 · Malay K. Ghosh4 Received: 28 August 2020 / Accepted: 13 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract This review highlights the synthesis, structure modification, morphology, and properties of nano manganese dioxide ( MnO2). Though MnO2 has been widely employed for electrode materials due to its superior electrochemica1 performance, abundant storage, low cost, and environmental friendly nature, the usage in bioapplications and dye mineralisation studies have started since few decades only. Currently, nano MnO2 plays an important role in solar cell devices and gas sensing as it can be easily tunable into desired polymerphic structure and morphology. Herein, the use of nano M nO2 as advanced material in energy, gas sensing, biological application and wastewater remediation are described. Based on the recent research, the available preparation procedures, surface modification and applications of nanostructured M nO2 are systematically presented. Also, structure stabilization and performance improvement of nano MnO2 by doping or composite formation with metals, carbon materials, and conductive polymers are summerised. According to the latest research progress, new trends and strategies of nano MnO2 towards specific applications besides energy storage application are focused in this review, as well as a brief overview of the challenges and future perspectives of M nO2, synthetic methodologies, and their state-of-the-art applications in different fields are presented.
* Guoying Zhang [email protected] * Shaohua Ju [email protected] 1
Faculty of Metallurgy & Energy Engineering, Kunming University of Science & Technology, Kunming 650093, Yunnan, China
2
Department of Chemistry, Ravenshaw University, Cuttack, Odisha 753003, India
3
Yunnan Province Energy Research Insititute Co Ltd, Kunming 650000, China
4
Hydro & Electrometallurgy Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751013, India
13
Vol.:(0123456789)
Journal of Inorganic and Organometallic Polymers and Materials
Graphic Abstract
Keywords MnO2 · Nanomaterials · Doping · Composite · Energy · Photocatalysis · Bio application
1 Introduction Manganese (Mn) is the 10th most abundant transition metal found in the Earth’s crust and second only to iron as the very common heavy metal. It is easily oxidized near the Earth’s surface, giving rise to more than 30 known Mn oxide/ hydroxide minerals. Manganese can form several stable oxides (MnO, Mn3O4, Mn2O3, MnO2) [1]. The predominant oxidation states of manganese are + 2, + 3 and + 4 and some of which are assumed to be the strongest oxidants naturally distributed in the environment. Among various types of manganese oxides and their derivatives, manganese dioxide (MnO2) has been widely studied by researchers due to its unique
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