Photothermal-Driven High-Performance Selective Hydrogenation System Enabled by Delicately Designed IrCo Nanocages,Small

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Photothermal-Driven High-Performance Selective Hydrogenation System Enabled by Delicately Designed IrCo Nanocages
Small ( IF 13.0 ) Pub Date : 2022-06-20 , DOI: 10.1002/smll.202201271
Lingling Zhang _{1,

2} , Jing Pan ₁ , Li Liu _{1,

3} , Shuaishuai Zhang ₁ , Xiao Wang _{1,

3} , Shuyan Song _{1,

3} , Hongjie Zhang _{1,

3,

4}

Affiliation

The incorporation of a transition metal into a noble metal for the formation of nanoalloys paves a potential way to modulate the electronic structures and spatial arrangement modes, thereby manipulating the target catalysis under the desired reaction pathways. Herein, a top-down synthetic route to fabricate IrCo nanoalloys with delicately designed compositions and morphologies at an extremely low calcination temperature of 200 °C is reported, which efficiently breaks through the thermodynamic limitations caused by the large atomic radii and electronegativity discrepancies between Co and Ir. A high-performance selective hydrogenation system enabled by the synthesized IrCo nanoalloys and the light irradiation is further established. Significantly, the unique properties of IrCo alloy, involving the special capability of generating local heating rather than hot electrons under light irradiation (the hot-electron effect was considered detrimental to hydrogenation reactions), as well as the highly polarized surface which aids in the hydrogen transfer from borane-ammonia complex (AB) to 4-nitrostyrene (4-NS) are discovered.

中文翻译：

由精心设计的 IrCo 纳米笼实现的光热驱动高性能选择性加氢系统

将过渡金属掺入贵金属中以形成纳米合金为调节电子结构和空间排列模式铺平了道路，从而在所需的反应途径下操纵目标催化。本文报道了一种自上而下的合成路线，在 200 °C 的极低煅烧温度下制备具有精心设计的成分和形貌的 IrCo 纳米合金，有效突破了由 Co 和 Co 之间的大原子半径和电负性差异引起的热力学限制。红外。进一步建立了由合成的IrCo纳米合金和光照射实现的高性能选择性加氢系统。值得注意的是，IrCo 合金的独特性能，

更新日期：2022-06-20

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