Synthesis and formation mechanism of urchin-like nano/micro-hybrid α-MnO2

Synthesis and Characterization of MnO2 Nanoparticles: Study of Structural and Optical Properties

“…Based on the different (MnO 6 ) links, MnO 2 can be divided into three categories: the chain like structure, the sheet or layered structure and the 3D structure [1]. Physical Vapour deposition, Chemical vapour deposition, Electrodeposition, Sol-gel process, aerosol processing, mechanical alloying/milling are some of the commonly used methods by which nanoparticles can be synthesized.…”

Synthesis of layered birnessite-type manganese oxide thin films on plastic substrates by chemical bath deposition for flexible transparent supercapacitors

“…Among all the crystallographic forms of manganese oxide [20][21][22][23][24], the use of birnessite-type MnO 2 has become popular due to its layered structure, which is beneficial for the intercalation and deintercalation of H + or alkali metal cations, and shows promising properties in enhancing the special capacitance [25]. Although layered birnessite-type MnO 2 thin films can be prepared by the sol-gel method [26,27], electrostatic spray [28], hydrothermal synthesis [29,30], and electrodeposition [31], large-scale industrial production via these approaches will be limited due to their harsh reaction conditions, energy consuming and complicated procedures.…”

Structural-controlled synthesis of manganese oxide nanostructures and their electrochemical properties

“…Several hydrothermal methods can be used in syntheses of MnO 2 nanostructures as well as other Mn oxides materials such as reduction of MnO 4 − , mixing of MnO 4 − and Mn 2+ , and oxidation of Mn 2+ compounds [6][7][8][9][10][11][12]. Recently, the synthesis of MnO 2 nanostructures using commercial Mn oxide solid powder, likes MnO 2 and Mn 2 O 3 , as raw materials by facile hydrothermal treatment has attracted attentions because it not only avoids complicated purification processes but also shows clearly the relationships between phases of the target products and the raw materials [13][14][15][16][17][18].…”