近日，四川大学刘犇团队实现了稀土金属合金介孔PtPb纳米片上废甘油电合成高效甘油。2025年8月19日，《国家科学评论》期刊发表了这一成果。

电催化甘油氧化反应（GOR）为经济、可持续地合成高附加值化学品（如甘油酸）提供了一条很有前景的途径。尽管取得了一些成就，但由于甘油的C-C键断裂不可控（对于不利的C1和C2产物），GOR电催化的GLA选择性和产率仍然不理想。

在这项工作中，研究组证明稀土金属（REM）合金PtPb介孔纳米片是一种新型的高性能电催化剂，用于选择性地从GOR电合成GLA。最佳电催化剂PtPbY MNSs对甘油电合成GLA具有优异的性能，选择性为72.5%，可记录产率为656 μmol mgcat^-1 h^-1、抑制文献中报道的大多数电催化剂。同时，PtPbY MNSs具有良好的GOR电催化稳定性，在达到15个循环时保持了较高的GLA选择性和产率。

原位表征和密度泛函理论计算表明，其优异的性能归因于结构和成分的协同作用，这些协同作用在动力学上促进了甘油的反应性，加速了GLA的解吸，同时最大限度地减少了不良的C-C键裂解。研究组通过优化REM合金对介孔金属的化学吸附性能，阐述了一种从废醇中选择性电合成高附加值化学品的有效替代方法。

附：英文原文

Title: Efficient glyceric acid electrosynthesis from waste glycerol on rare-earth-metal-alloyed mesoporous PtPb nanosheets

Author: Fan, Dongping, Sun, Lizhi, Yuan, Ruijia, Qiao, Zhen-An, Che, Shunai, Liu, Ben

Issue&Volume: 2025-08-19

Abstract: Electrocatalytic glycerol oxidation reaction (GOR) offers a promising route to synthesize high value-added chemicals, for example glyceric acid (GLA), in an economic and sustainable manner. Despite some great achievements, GLA selectivity and yield rate of GOR electrocatalysis remain unsatisfactory due to uncontrollable C–C bond cleavage of glycerol (for unfavorable C1 and C2 products). In this work, rare-earth-metal (REM)-alloyed PtPb mesoporous nanosheets are demonstrated as novel yet high-performance electrocatalysts for selective GLA electrosynthesis from GOR. The best electrocatalyst – PtPbY MNSs – delivers outstanding performance for GLA electrosynthesis from glycerol, including superior selectivity of 72.5% and recordable yield rate of 656 μmol mgcat1 h1, suppressing most of electrocatalysts reported in the literature. Meanwhile, PtPbY MNSs hold impressive stability of GOR electrocatalysis, retaining the high GLA selectivity and yield rate for reaching 15 cycles. Superior performance, revealed by in situ characterizations and density functional theory calculations, is ascribed to structural and compositional synergies that kinetically promote the reactivity of glycerol and accelerate the desorption of GLA while minimizing undesirable C–C bond cleavage. This work elaborates a powerful alternative for selective electrosynthesis of high-value-added chemicals from waste alcohols by optimizing chemisorption properties of mesoporous metals by REM alloys.

DOI: 10.1093/nsr/nwaf343

Source: https://dx.doi.org/10.1093/nsr/nwaf343