The Front Cover shows a nonmetal catalyst (SiO₂@H⁺PEI) that promotes hydrogen production from the hydrolysis of NaBH₄. This newly developed catalyst, which is fabricated by covalently modifying SiO₂ nanoparticles with protonated poly(ethylene imime), provides a promising choice for the cheap and efficient catalysis of NaBH₄ hydrolysis. More details can be found in the Full Paper by Hua Dong and co‐workers (DOI: 10.1002/cplu.201900609).

中文翻译：

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质子化的聚乙烯亚胺包覆的二氧化硅纳米粒子，用于通过硼氢化钠的水解促进氢的产生

前封面显示了一种非金属催化剂（SiO ₂ @H ⁺ PEI），可促进NaBH ₄水解产生氢。这种新开发的催化剂是通过质子化的聚乙烯亚胺对SiO ₂纳米颗粒进行共价修饰而制成的，为廉价，高效地催化NaBH ₄水解提供了有希望的选择。可以在Hua Dong及其同事的论文全文中找到更多详细信息（DOI：10.1002 / cplu.201900609）。