Silica‐Protected Ultrathin Ni3FeN Nanocatalyst for the Efficient Hydrolytic Dehydrogenation of NH3BH3,Advanced Energy Materials

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Silica‐Protected Ultrathin Ni3FeN Nanocatalyst for the Efficient Hydrolytic Dehydrogenation of NH3BH3
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-01-19 , DOI: 10.1002/aenm.201702780
Xin Zhang _{1,

2} , Yufei Zhao ₁ , Xiaodan Jia ₃ , Yunxuan Zhao _{1,

2} , Lu Shang ₁ , Qing Wang _{1,

2} , Geoffrey I. N. Waterhouse ₄ , Li-Zhu Wu ₁ , Chen-Ho Tung ₁ , Tierui Zhang _{1,

2}

Affiliation

Transition metal nitrides (TMNs) inevitably aggregate in the high‐temperature thermal ammonolysis process, resulting in blocking of the active catalytic sites and serious decreases in their corresponding catalytic performance. Therefore, how to synthesize ultrasmall TMNs with higher exposed unsaturated coordination sites is still a challenge. Herein, ultrathin Ni₃FeN (Ni₃FeN@SiO₂) with the size of ≈20 nm and thickness of ≈3.0 nm is fabricated by SiO₂ protection strategy. The obtained Ni₃FeN@SiO₂ displays outstanding performance in NH₃BH₃ hydrolytic dehydrogenation due to the high specific surface area, intrinsic metal‐vacancies, and hydrophilic SiO₂ layer.

中文翻译：

二氧化硅保护的超薄Ni3FeN纳米催化剂，用于NH3BH3的有效水解脱氢

过渡金属氮化物（TMNs）在高温热氨解过程中不可避免地会聚集，导致活性催化位点被封堵并严重降低其相应的催化性能。因此，如何合成具有较高暴露的不饱和配位位点的超小型TMN仍然是一个挑战。在此，通过SiO ₂保护策略制造了尺寸约为20 nm，厚度约为3.0 nm的超薄Ni ₃ FeN（Ni ₃ FeN @ SiO ₂）。所获得的Ni ₃ FeN @ SiO ₂在NH ₃ BH _3中显示出优异的性能。高比表面积，固有的金属空位和亲水性SiO ₂层导致水解脱氢。

更新日期：2018-01-19

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