Salt template-assisted in situ construction of Ru nanoclusters and porous carbon: excellent catalysts toward hydrogen evolution, ammonia-borane hydrolysis, and 4-nitrophenol reduction,Green Chemistry

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Salt template-assisted in situ construction of Ru nanoclusters and porous carbon: excellent catalysts toward hydrogen evolution, ammonia-borane hydrolysis, and 4-nitrophenol reduction
Green Chemistry ( IF 9.3 ) Pub Date : 2019/12/23 , DOI: 10.1039/c9gc03986d
Rong Ding _{1,

2,

3,

4} , Qian Chen _{1,

2,

3,

4} , Qian Luo _{1,

2,

3,

4} , Lingxi Zhou _{1,

2,

3,

4} , Yi Wang _{1,

2,

3,

4} , Yun Zhang _{1,

2,

3,

4} , Guangyin Fan _{1,

2,

3,

4}

Affiliation

Sustainable yet effective manufacture of supported metal nanoclusters (NCs) with high performance for catalytic applications is worthwhile but remains a big challenge. Here, we report a salt template-assisted approach through direct calcination of a mixture of ruthenium oleate precursor and sodium sulfate for one-step synthesis of Ru NCs solidly loaded on the simultaneously formed porous carbon (Ru/PC). In this case, both the salt template of sodium sulfate and one-step approach play key roles in forming surface-clean Ru NCs with good dispersion to supply abundant accessible active sites and constructing a three-dimensional architecture to boost the mass and/or electron transport during applications. Taking advantage of these features, Ru/PC as a catalyst shows excellent activities for electrocatalytic hydrogen evolution with an overpotential of 21 mV at 10 mA cm⁻² in 1.0 M KOH and ammonia-borane hydrolysis with a high turnover frequency of 744 min⁻¹ and a high activity for 4-nitrophenol reduction with a reaction rate of 1.29 min⁻¹ at room temperature. The catalyst also shows high stability and reusability for the investigated reactions. This study presents a green yet sustainable method to produce supported metal NCs for versatile catalytic applications.

中文翻译：

盐模板辅助的Ru纳米团簇和多孔碳的原位构建：极佳的催化剂，可用于放氢，氨硼烷水解和4-硝基苯酚还原

可持续而有效地制造具有催化应用高性能的支撑金属纳米簇（NC）值得，但仍然是一个巨大的挑战。在这里，我们报告了一种盐模板辅助方法，该方法通过直接煅烧油酸钌前体和硫酸钠的混合物进行一步法合成，将固体牢固地负载在同时形成的多孔碳（Ru / PC）上的Ru NCs合成。在这种情况下，硫酸钠的盐模板和一步法在形成具有良好分散性的表面清洁Ru NC时起着关键作用，以提供充足的可利用活性位点，并构建三维结构以提高质量和/或电子在申请过程中运输。利用这些功能，在1.0 M KOH中的^-2和氨-硼烷水解，在室温下具有744 min^-1的高周转频率，并且在1.29 min^-1的反应速率下具有高的4-硝基苯酚还原活性。对于所研究的反应，该催化剂还显示出高稳定性和可重复使用性。这项研究提出了一种绿色但可持续的方法，以生产用于多功能催化应用的支持金属NC。

更新日期：2020-02-13

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