Construction of 3DOM Fe2O3/CuO heterojunction nanomaterials for enhanced AP decomposition

Atomically dispersed rhodium on ordered macroporous In2O3 for the highly sensitive detection of ethanol and the sensing mechanism

“…The presence of a linear intermediate part in the isotherm at the low to medium pressure stage indicates the existence of unrestricted monolayer or multilayer adsorption of the macroporous structure. 24…”

Preparation of 3DOM CoFe2O4 nanomaterials and their highly efficient catalysis in the thermal decomposition of AP

“…1a). All the diffraction peaks of pure 3DOM Fe 2 O 3 can be labeled as the typical α -hematite crystal phase (JCPDS 33-0664) [5] . The XRD diffraction peaks appear at 62.86 °, 57.22 °, 53.74 °, 43.22 °, 35.56 °, and 30.22 °, corresponding to the (440), ( 511), ( 422), (400), (311), and (220) planes of CoFe 2 O 4 (JCPDS No.22-1086) [9] .…”

“…Its catalytic performance is not only better than 3DOM Fe 2 O 3 , but also better than bulk CoFe 2 O 4 . The reason is that three ordered macroporous structure of catalyst has a high surface area and higher adsorption, the AP thermal decomposition of the main gas intermediates NH 3 and HClO 4 (g) can adsorb on the surface of the porous catalyst, and under the action of the active site to produce a large number of O 2radical anion and oxidation NH 3 (g) into small molecules [5] . In addition, the construction of the spinel structure adjusts the electronic structure of the catalyst and increases its catalytic activity.…”

“…DSC tests were performed for 3DOM CoFe 2 O 4 (2% wt) at four different heating rates for investigating the kinetic process of AP thermal decomposition. The kinetic parameters (Ea, k) of the AP thermal decomposition can be calculated from the Arrhenius equation and the Kissinger equation [5] : In formula (1), Tp is the peak temperature of the THTD, β is the heating rate (℃ꞏmin -1 ), R is the ideal gas constant, A is the pre-exponential factor, and Ea is the apparent activation energy, [14] . For pure AP, the apparent activation energy was calculated as 178.42 kJ mol -1 .…”

“…Due to its connected three-dimensional pore structure and good mass transfer efficiency [4] , three-dimensional ordered macroporous material (3DOM) has been a promising nanocatalyst in catalytic reactions. In addition, other functional components assembled based on 3DOM support and functional 3DOM materials designed for special applications can greatly reduce Molecular diffusion resistance and provide enough space for gas and solid particles to convection and transport through interconnected pore networks, thus effectively improving catalytic efficiency [5] .…”