Anchoring and Upgrading Ultrafine NiPd on Room‐Temperature‐Synthesized Bifunctional NH2‐N‐rGO toward Low‐Cost and Highly Efficient Catalysts for Selective Formic Acid Dehydrogenation,Advanced Materials

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Anchoring and Upgrading Ultrafine NiPd on Room‐Temperature‐Synthesized Bifunctional NH2‐N‐rGO toward Low‐Cost and Highly Efficient Catalysts for Selective Formic Acid Dehydrogenation
Advanced Materials ( IF 27.4 ) Pub Date : 2018-02-07 , DOI: 10.1002/adma.201703038
Jun-Min Yan ₁ , Si-Jia Li ₁ , Sha-Sha Yi ₁ , Ba-Ri Wulan ₁ , Wei-Tao Zheng ₁ , Qing Jiang ₁

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Hydrogen is widely considered to be a sustainable and clean energy alternative to the use of fossil fuels in the future. Its high hydrogen content, nontoxicity, and liquid state at room temperature make formic acid a promising hydrogen carrier. Designing highly efficient and low‐cost heterogeneous catalysts is a major challenge for realizing the practical application of formic acid in the fuel‐cell‐based hydrogen economy. Herein, a simple but effective and rapid strategy is proposed, which demonstrates the synthesis of NiPd bimetallic ultrafine particles (UPs) supported on NH₂‐functionalized and N‐doped reduced graphene oxide (NH₂‐N‐rGO) at room temperature. The introduction of the NH₂N group to rGO is the key reason for the formation of the ultrafine and well‐dispersed Ni_0.4Pd_0.6 UPs (1.8 nm) with relatively large surface area and more active sites. Surprisingly, the as‐prepared low‐cost NiPd/NH₂‐N‐rGO dsiplays excellent hydrophilicity, 100% H₂ selectivity, 100% conversion, and remarkable catalytic activity (up to 954.3 mol H₂ (mol catalyst)⁻¹ h⁻¹) for FA decomposition at room temperature even with no additive, which is much higher than that of the best catalysts so far reported.

中文翻译：

在室温合成的双功能NH2-N-rGO上锚定和升级超细NiPd，以实现低成本和高效的选择性甲酸脱氢催化剂

氢被广泛认为是未来替代化石燃料的一种可持续的清洁能源替代品。它的氢含量高，无毒且在室温下呈液态，使甲酸成为有前途的氢载体。设计高效，低成本的非均相催化剂是实现甲酸在基于燃料电池的氢经济中的实际应用的主要挑战。本文提出了一种简单但有效且快速的策略，该策略证明了室温下在NH ₂功能化和N掺杂的还原氧化石墨烯（NH ₂ ‐N‐rGO）上负载的NiPd双金属超细颗粒（UPs）的合成。引入的 NH ₂N基团到rGO是形成具有相对较大表面积和更多活性位点的超细且分散良好的Ni _0.4 Pd _0.6 UPs（1.8 nm）的主要原因。令人惊讶地，所制备的低成本NIPD / NH ₂ -N-RGO dsiplays优异的亲水性，100％H ₂选择性，转化率为100％，和显着的催化活性（高达954.3摩尔ħ ₂（摩尔催化剂）^-1 ħ ^{- 1}）即使在没有添加剂的情况下也能在室温下分解FA，这比迄今为止报道的最佳催化剂要高得多。

更新日期：2018-02-07

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