Membrane filtration and absorption strategies based on superwetting surface for oil-water separation have regained tremendous attention due to its low cost, high efficiency and environmental friendly advantages. Besides usual superhydrophobic,...

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A highly stable and efficient CsPbBr3@SiO2 composite phosphor is achieved by protecting the CsPbBr3 QDs from direct exposure to the atmosphere by encapsulating CsPbBr3 into dual-shell hollow silica nanospheres.

Highly thermally and environmentally stable CsPbX3@h-BN composites are constructed via a simple one-pot in situ synthesis strategy, and the corresponding heat dissipation mechanism is proposed based on the enhanced thermal conductivity.

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A new type of low-temperature selective catalytic reduction (SCR) catalyst, CuMnAlO, derived from layered double hydroxides is presented in this contribution. By tuning the Cu/Mn/Al ratio, the optimal catalyst CuMnAlO resulted in a NO conversion of 91.2% at 150 °C, which is much higher than that of all other control catalysts, CuAlO (71.1%), Cu-Mn/γ-AlO (65.23%), and Mn/γ-AlO (59.32%). All samples were characterized in detail using various physico-chemical techniques including XRD, BET, FTIR, TEM, H-TPR, NH-TPD, and XPS analyses, and the results revealed that the superior catalytic performance of the CuMnAlO catalyst can be attributed to its high specific surface area, high reducibility of MnO and CuO species, abundance of surface acid sites, and the good dispersion of MnO and CuO species. FTIR analyses of pyridine adsorbed samples revealed that the catalytic activity is proportional to the amount of Lewis acid sites. CuMnAlO also showed much higher resistance to 100 ppm SO and 5% HO than the control catalysts. The poisoning mechanism and the regenerability of the CuMnAlO catalyst was also investigated. In all, compared with the control catalysts of CuAlO, Cu-Mn/γ-AlO, and Mn/γ-AlO, the newly designed CuMnAlO catalyst is not only more active at low temperatures (100-250 °C), but is also relatively more robust in the presence of SO and HO.

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