CoNi LDH-6 with a nano-petal structure was prepared, which exhibited excellent rate performance and long-term stability as a supercapacitor electrode.

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Coating cellulose tris (3,5-dimethylphenylcarbamate) (CDMPC) on silica gels with large pores have been demonstrated as an efficient way for the preparation of chiral stationary phase (CSP) for high-performance liquid chromatography (HPLC). During the process, a number of parameters, including the type of coating solvent, amount of coating, and the method for subsequent solvent removing, have been proved to affect the performance of the resultant CSPs. Coating times and the concentration of coating solution, however, also makes a difference to CSPs' performance by changing the arrangement of cellulose derivatives while remaining the coating amount constant, have much less been studied before, and thereby, were systematically investigated in this work.Results showed that CSPs with more coating times exhibited higher chiral recognition and column efficiency, suggesting that resolution was determined by column efficiency herein. Afterwards, we also investigated the effect of coating amount on the performance of CSPs, and it was shown that the ability of enantio-recognition did not increase all the time as the coating amount; and four of seven racemates achieved best resolution when the coating amount reached to 18.37%. At the end, the reproducibility of CDMPC-coated CSPs were further confirmed by two methods, ie, reprepared the CSP-0.15-3 and reevaluated the effect of coating times.

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The exploitation of economical and high‐efficient heterogeneous catalysts plays a vital role in ammonia‐borane (NH3BH3, AB) hydrolysis for hydrogen evolution. Herein, poly(N‐vinyl‐2‐pyrrolidone) (PVP) stabilized highly dispersed Ru–Ni nanoclusters immobilized on reduced graphene oxide (rGO) are successfully synthesized via in situ chemical reduction. The optimized Ru1Ni1@PVP/rGO‐1 catalyst exhibits a superior catalytic performance toward hydrolytic dehydrogenation of AB for hydrogen evolution, with a low activation energy (Ea) of 21.1 kJ mol−1 and a high turnover frequency (TOF) value of 425.1 molH2 molRu−1 min−1at 298 K. Moreover, an outstanding recyclability with 82.1% of the initial catalytic activity is achieved after 20 consecutive cycles due to PVP coating that can effectively prevent the agglomeration of nanoclusters during the recycling tests. Experimental analyses and DFT calculations reveal a synergistic effect in Ru–Ni nanoclusters, resulting in a strong adsorption of AB molecules and an easy activation of water molecules on Ru–Ni nanoclusters. These findings in this study open a new avenue for a hopeful design of highly efficient heterogeneous catalysts.

Through the 2002 Early Childhood Education Initiative, Shouguang City in the Shandong province of China expanded its early childhood education program to include children below the age of three. The strategies which were applied to ensure the successful implementation of the program included: (1) creating a three-tiered professional development program for preschool teachers to enhance their knowledge and skills in infant and toddler care; (2) opening activity centers for infants and toddlers cared for at home and their parents to provide them with professional early education services; (3) reaching out to families of children cared for at home by offering parental education and individualized consultation; and (4) utilizing local resources in the community to allow more young children access to much-needed learning materials. This Initiative has achieved its goal of raising the community's awareness of the importance of early childhood education. As a result, parents and teachers in the community have gained knowledge of child development and skills in early childcare, and more local children are receiving quality early education, which has consequently brought positive changes to the entire community.