A double polyoxometalates?based composite catalyst material was prepared by Mechanochemistry. In order to compare with the double polyoxometalates?based composite catalyst material, one polyoxometalates?based were prepared by the same method. The structures of these catalysts were characterized by X?ray powder diffraction, Fourier transform infrared spectroscopy, and liquid ultraviolet spectroscopy. The photocatalytic degradation of rhodamine B (RhB) was selected as a model reaction to evaluate its photocatalytic activity and the possible mechanism were further explored in the degradation process. The results indicate that the degradation efficiency of H₃PMo₁₂O₄₀&H₄SiW₁₂O₄₀@MOF?199 is 92% while irradiating in simulated sunlight for 60 minutes, which is superior to that of the corresponding single POMs catalysts H₃PMo₁₂O₄₀ or H₄SiW₁₂O₄₀@MOF?199 and has a good cycling activity. The synergistic effect of the good photocatalytic activity of polyoxotungstates and the good oxidation?reduction ability of polyoxomolybdates, which provides a new vision for designing diverse POMs@MOFs composite catalysts with different catalytic properties.

Biomass carbon aerogels with high specific surface area derived from sweet potato were prepared by freeze?drying and alkali activation processes. Sweet potato carbon aerogels (SPCA) and activated sweet potato carbon aerogels (ASPCA) with different morphologies and features were prepared by changing carbonization temperature and activation method. The prepared biomass carbon aerogels were characterized and analyzed by SEM, XRD, low temperature nitrogen absorption/desorption test and Raman spectroscopy. The results show that with the increasing of carbonization temperature, the pores increased, furthermore, alkali activation has a great promotion effect on the formation of pores on ASPCA. The prepared biomass carbon aerogel has good adsorption performance, and the maximum adsorption capacity for Rhodamine B (RdB), methyl orange (MO) and alizarin red (ARS) in deionized water is 202.2 mg/g, 83.6 mg/g and 160.2 mg/g, respectively.

Heterocyclic N?oxides are important structural units in organic synthesis and pharmaceutical molecules. Under mild conditions, the combination of visible?light catalysis and transition metal catalysis can simply and efficiently realize the direct ortho?C—H bond acylation reaction of heterocyclic N?oxides and benzoyl formic acid. The reaction system has good universality and excellent selectivity, and can obtain a series of N?oxides substituted by ortho?acyl groups at a moderate to good yield.

An transition metal copper?catalyzed cross?coupling reaction of tosylates with p?toluene sulfonate compounds and alkyl Grignard reagent has been developed, and a long alkyl branched fatty alcoholto could be synthesized simply and efficiently. 10?octylicosan?1?ol was obtained in 65% isolated yield under the optimized reaction conditions. It was further characterized by nuclear magnetic resonance,the structure of the compound was confirmed.