Three-dimensional carbon foam supported MnO2/Pt for rapid capture and catalytic oxidation of formaldehyde at room temperature

An Advanced Dual‐Function MnO2‐Fabric Air Filter Combining Catalytic Oxidation of Formaldehyde and High‐Efficiency Fine Particulate Matter Removal

“…[1] Among different strategies proposed to control HCHO emission, heterogeneous catalytic oxidation into harmless byproducts is a most attractive method to remove HCHO with robust performance and low energy consumption. [2,3] In recent years, transition metal oxides such as MnO 2 , [4][5][6] CeO 2 , [7,8] Co 3 O 4 , [9] have shown potential for HCHO catalytic oxidation. Among these, MnO 2 is widely used in HCHO removal via complete transformation of HCHO into CO 2 and H 2 O. Sekine et al [10] indicated that among 13 commercial transition metal oxides, MnO 2 had the best HCHO catalytic activity.…”

“…In recent years, transition metal oxides such as MnO 2 , [ 4–6 ] CeO 2 , [ 7,8 ] Co 3 O 4 , [ 9 ] have shown potential for HCHO catalytic oxidation. Among these, MnO 2 is widely used in HCHO removal via complete transformation of HCHO into CO 2 and H 2 O. Sekine et al.…”

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 ).…”

“…In recent years, many efforts have been made to improve the performance of MnO 2 catalysts to enhance their low‐temperature oxidation activity for formaldehyde and CO 2 selectivity. Loading noble metal NPs, such as Pt, [ 155,453,461 ] Au, [ 296 ] Ag, [ 116 ] etc., on the surface of MnO 2 to enhance the formaldehyde degradation performance of the catalytic system has been widely recognized and studied. The highly dispersed NPs on the surface of MnO 2 possesses many advantages, such as increasing the number of surface atoms, thus, increasing the number of active centers, which results in the high catalytic performance for formaldehyde degradation.…”

Pt Anchored on Mn(Co)CO3/MnCo2O4 Heterostructure for Complete Oxidation of Formaldehyde at Room Temperature

“…Numerous individual supports, for example, TiO 2 , MnO 2 , hydroxyapatite (HAP), Co 3 O 4 , iron‐containing compounds, AlOOH, sepiolite, Al 2 O 3 , NiMoO 4 , hydrotalcite and hybrids like CeO 2 −AlOOH, MnO x −CeO 2 and CeO 2 −Co 3 O 4 have been exploited for HCHO oxidation at low temperature, which could enhance the dispersion of active noble metal nanoparticles (NPs), and provide plenty of surface hydroxyls to stabilize the active noble metal NPs and/or to directly participate in HCHO oxidation reaction. Furthermore, the typical redox properties of some supports could easily generate an interaction between noble metal NPs and the support, which would induce the formation of reactive oxygen species on their interface.…”