Facile and green synthetic strategy of birnessite-type MnO2 with high efficiency for airborne benzene removal at low temperatures

MnO2‐Based Materials for Environmental Applications

“…Among many catalysts, MnO 2 ‐based materials have been extensively studied in the catalyst degradation of VOCs due to their natural abundance, environmentally friendliness, low cost, and specific chemical/physical properties, including different crystal structures and suitable redox activity. Currently, the reported types of VOCs degraded by MnO 2 ‐based materials include benzene series (such as toluene, [ 166,217,226,430–438 ] benzene, [ 171,173,439–441 ] ethylbenzene, [ 442–444 ] and o ‐xylene [ 297,445–448 ] ), formaldehyde, [ 54,86,116,123,137,155,156,296,449–455 ] propane, [ 456 ] aerobic sulfide, [ 172 ] methyl mercaptan, [ 299,457 ] acetone, [ 458,459 ] etc. Among them, formaldehyde and benzene series are the most common VOC pollutants in the air that have been studied the most ( Table 3 ).…”

Post-Plasma Catalysis for Trichloroethylene Abatement with Ce-Doped Birnessite Downstream DC Corona Discharge Reactor

“…A narrower band can be observed at 1540 cm −1 , which can be assigned to the formation of pyridinium ions resulting from pyridine protonation on Brønsted acid sites. The interaction of pyridine with Ce 0.01 Mn-AT gave rise to a set of several bands: (i) two bands at 1540 and 1635 cm −1 , associated with pyridinium ions resulting from pyridine protonation on Brønsted acid sites; (ii) two bands at 1450 and 1610 cm −1 , attributed to pyridine coordinated with Lewis acid sites; and (iii) overlapping bands of pyridine on Lewis and Brønsted acid sites at 1487 cm −1 [22,[30][31][32][33]. Moreover, the band at 1573 cm −1 can be attributed to the pyridine physisorption (P) [20], while the band at 1471 cm −1 could have resulted from the interaction between the adsorbed pyridine and manganese oxides [34].…”

Highly selective colorimetric determination of catechol based on the aggregation-induced oxidase–mimic activity decrease of δ-MnO2

“…Birnessite-type MnO 2 (d-MnO 2 ) was obtained through the redox reaction between KMnO 4 and methanol, as our previous work mentioned. 20 The products were collected and characterized. The morphology of d-MnO 2 was observed using transmission electron microscopy (TEM, Tecnai F30, FEI), and the chemical environment and element valences of the material surface were determined by X-ray photoelectron spectroscopy (ESCALAB™ 250Xi).…”