CeO2/TiO2 catalysts were fabricated by dry ball milling in the presence or absence of an organic ligand. It was found that the catalysts prepared by ligand-assisted ball milling exhibited high NH3-SCR activities due to the interaction between cerium ions and ligand molecules resulting in good dispersion, a high Ce3+ ratio and high reducibility of cerium species.

Three V2O5/TiO2 catalysts with V2O5 loading of 3 wt% were fabricated by wet impregnation, in which the TiO2 supports had different crystal types, including the octahedral TiO2 (preferentially exposed anatase {101} facets, labeled as TiO2-O), the sheet TiO2 (preferentially exposed anatase {001} facets, labeled as TiO2-S), and the commercial TiO2 (TiO2-P25), giving the three corresponding catalysts, respectively. The activities and the effects of H2O and SO2 over the V2O5/TiO2 catalysts for the selective catalytic reduction (SCR) of NO by NH3 were investigated. It was found that the crystal facets of TiO2 nanoparticles played an essential role in the catalytic activity. The V2O5/TiO2-S catalyst exhibited the better catalytic activity than the V2O5/TiO2-O and V2O5/TiO2-P25 catalysts for the NH3-SCR reaction. The N2 sorption isotherm measurement (BET), X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), temperature-programmed reduction (H2-TPR), temperature-programmed desorption (NH3-TPD), X-ray photoelectron spectra (XPS) and in-situ diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) characterizations showed that the good dispersion and reducibility of vanadium species, and the high concentration of chemisorbed oxygen of the V2O5/TiO2-S catalyst could be responsible for the enhancement in the activity of NH3-SCR reaction over the catalyst.

A highly porous metal–organic framework based on supramolecular building blocks with pcu-topology (pcu-MOF) has been tested for the oxidative coupling of amines and disulfides or thiols to afford the N-sulfenylimines directly in good yields without the formation of N-sulfinyl- and N-sulfonylimines. The pcu-MOF catalyst could be easily recovered from the reaction mixture by simple filtration, and could be reused at least five times without any substantial loss in the yield. The control experiments and mechanistic studies suggested that the oxidative coupling process involved the imine formation and the N–S coupling reaction.

•Two new porphyrin@MOFs type catalysts were synthesized through self-assembly approach.•CuTNPP@MOF exhibited a higher activity for the oxidation of DTBC.•A synergistic effect between the two structural components of CuTNPP@MOF was found.•The copper center of CuTNPP and the open copper sites within MOF are active sites.Reaction of 1,1-bis-[3,5-bis(carboxy) phenoxy]methane (H4L) and CuCl2 in the presence of meso-tetrakis[4-(nicotinoyloxy)phenyl]porphyrin (TNPP) and manganese complex of TNPP (MnTNPP), respectively, under solvothermal condition afforded CuTNPP@MOF and MnTNPP@MOF, microporous metal-organic materials containing neutral CuTNPP or MnTNPP molecules in their frameworks. The nitrogen sorption isotherm measurement, ultraviolet visible adsorption spectroscopy (UV–vis), powder X-ray diffraction (XRD), and thermogravimetric analysis (TGA) characterizations showed that CuTNPP@MOF and MnTNPP@MOF were permanently porous and had heterogeneous catalytic activity for the oxidation of 3,5-di-tert-butylcatechol.Two new porphyrin@MOFs type catalysts, CuTNPP@MOF and MnTNPP@MOF, have been synthesized through “one-pot” self-assembly approach, which are permanently porous and exhibit catalytic activity for the oxidation of 3,5-di-tert-butylcatechol.

A flexible ligand with two 1,3-benzenedicarboxylate units has been used to construct a microporous metal–organic framework with pcu topology based on supramolecular building blocks (SBBs). The obtained Cu(II) MOF exhibits a noticeable CO2 adsorption hysteresis and a comparable methane adsorption capacity at room temperature.

The interaction of a cationic water-soluble porphyrin, 5,10,15,20-tetrakis [4-(3-pyridiniumpropoxy)phenyl]porphyrin tetrakisbromide (TPPOC3Py), with anionic surfactant, sodium dodecyl sulfate (SDS), in aqueous solution has been studied by means of UV–vis, 1H NMR, fluorescence, circular dichroism (CD) spectra and dynamic laser light scattering (DLLS), and it reveals that TPPOC3Py forms porphyrin-surfactant complexes (aggregates), including ordered structures J- and H-aggregates, induced by association with surfactant monomers below the SDS critical micelle concentration (cmc), and forms micellized monomer upon the cmc, respectively. The position of TPPOC3Py in the micelle is determined, which is not in the micelle core instead of intercalated among the SDS chains, most likely with the pyridinium group extending into the polar headgroup region of the micelle.

CeO2/TiO2 catalysts were fabricated by dry ball milling in the presence or absence of an organic ligand. It was found that the catalysts prepared by ligand-assisted ball milling exhibited high NH3-SCR activities due to the interaction between cerium ions and ligand molecules resulting in good dispersion, a high Ce3+ ratio and high reducibility of cerium species.