Novel photoactivation and solar-light-driven thermocatalysis on ε-MnO₂ nanosheets lead to highly efficient catalytic abatement of ethyl acetate without acetaldehyde as unfavorable by-product

Abstract

ε-MnO2 nanosheets exhibit excellent photothermocatalytic performance promoted by a novel photoactivation without unfavorable by-product of acetaldehyde for abatement of ethyl acetate under UV-vis-IR irradiation.

Photothermocatalytic Dry Reforming of Methane for Efficient CO2 Reduction and Solar Energy Storage

“…UV, visible, and infrared energy in solar light could be efficiently used. The strategy is highly efficient for photothermocatalytic purification of air pollutants. − It is also efficient for photothermocatalytic CO 2 reduction by H 2 O − and H 2 , − photothermocatalytic SRM, , photothermocatalytic methanol synthesis, photothermocatalytic ammonia decomposition, , photothermocatalytic H 2 –D 2 exchange reaction, photothermocatalytic DRM, − and so on. Among the photothermocatalytic strategies, photothermocatalytic DRM is promising and attractive because it shows the high catalytic activity of thermocatalytic DRM, − avoids the high energy consumption of thermocatalytic DRM due to its highly endothermic characteristics, and realizes highly efficient light-to-fuel conversion.…”

Efficient Photothermal Elimination of Formaldehyde under Visible Light at Room Temperature by a MnOx-Modified Multi-Porous Carbon Sphere

“…For the 0.05MnC-30-500 sample, the surface of the carbon sphere showed a certain burr and concave-convex feeling, which was due to the formation of MnO x on the surface of the carbon sphere. The HR-TEM of the 0.05MnC-30-500 catalyst (see Figure 7), which has a d-spacing of 0.49 nm, matching the interlayer distance of (100) facet of MnO x crystal, also proves this [18,19].…”

“…The Zn-CNS sample was then washed using 0.5 M of HCl, and the obtained sample (PCNS-500) had only carbon, indicating that the ZnO formed at the surface was removed, leaving a porous structure. Figure 5B shows an akhtenskite phase (2 theta = 36.5 • ) for 0.05MnC-30-500 [18,19], which indicates the stable formation of MnO x at the surface of the carbon spheres with porous structures after being immersed in 0.05 mol/L of KMnO 4 solution.…”

Low-Crystalline Akhtenskite MnO2-Based Aqueous Magnesium-Ion Hybrid Supercapacitors with a Superior Energy Density Boosted by Redox Bromide-Ion Additive Electrolytes

“…Figure f shows the Mn 2p spectrum with four major peaks centered at 643.7 eV (Mn 4+ 2p 3/2 ), 654.5 eV (Mn 4+ 2p 1/2 ), 642.1 eV (Mn 3+ 2p 3/2 ), and 653.3 eV (Mn 3+ 2p 1/2 ). The O 1s spectrum, as shown in Figure g, is also fitted into two components, which are lattice oxygen (O latt ) and surface adsorbed oxygen/oxygen vacancy (O ads /O vac ) located at 529.8 and 531.4 eV, respectively. , Notably, Figure h shows two peaks at 295.5 and 292.6 eV, indicating the presence of K + in K-MnO 2 -5. Besides, XPS Mn 2p, O 1s, and K 2p spectra of K-MnO 2 -3, K-MnO 2 -7, and K-MnO 2 -9 are displayed in Figure S4.…”