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The article discusses the design and synthesis of a catalyst, a-Ni/CeO2@NC, where atomically dispersed nickel (Ni) is anchored on ceric oxide (CeO2) particles embedded in peanut-shaped hollow nitrogen-doped carbon structures. Topics include the catalyst demonstrates enhanced electrocatalytic oxygen evolution activity; it activates adjacent Ce sites through electronic coupling and redistribution; and improving electrocatalytic activity by manipulating intrinsic activity at the atomic level.

To reduce the dust pollution caused by the construction industry, calcium magnesium acetate (CMC), and glycerin as the primary raw materials, sodium dodecyl benzene sulfonate (SDBS) as the surfactant, and sodium hydroxide (NaOH) as the initiator were used to produce construction-site dust suppressant. This study focused on the preparation conditions of this dust suppressant and the dust-suppression effects of different dust-suppressant spraying methods. Tests of dust suppression derived from 1 h of reaction time, 70°C of reaction temperature, and 0.3 g of initiator dosage showed superior performance. The dust suppressant viscosity, hardness, antiwind erosion, and water retention capacity of the consolidated soil were improved greatly under this condition. Moreover, in experiments using different spraying methods, the method of spraying the dust suppressant instantly after water spraying worked best; the water-saving efficiency was increased by up to 92.62%, and the economic cost was reduced by 55.1% compared to the water-spraying method. This research can provide effective technical support for dust-suppression operations at construction sites. [ABSTRACT FROM AUTHOR]