Easily Applicable Heterogeneous Catalyst from Sustainable Resources: Anchoring of Pd Nanoparticles onto Chemically Poly(2-amino thiophenol)-Modified Wool Fabrics,ACS Applied Polymer Materials

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Easily Applicable Heterogeneous Catalyst from Sustainable Resources: Anchoring of Pd Nanoparticles onto Chemically Poly(2-amino thiophenol)-Modified Wool Fabrics
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2022-09-07 , DOI: 10.1021/acsapm.2c00776
Begüm Başbuğ ₁ , Meryem Kalkan Erdoğan ₁ , Meral Karakışla ₁ , Mehmet Saçak ₁

Affiliation

For preparing the Pd nanoparticle (PdNP)-decorated heterogeneous catalyst material, wool fabric was utilized as a practical platform after enriching its chemical functionality with two straightforward chemical processes. First, wool keratin was transformed to a reduced structure (WSH) with NaHS by extracting −SH groups and then reconstructed to the S–S linkages by the covalent attachment of 2-amino thiophenol (2-ATP). The graft copolymerization of 2-ATP onto this 2-ATP/WSH surface was ensured to prepare a P2ATP-g-WSH copolymer fabric. As the second process, the polymerization of 2-ATP was also performed on the WSH fabrics to prepare a P2ATP/WSH composite. The PdNP anchoring was subsequently ensured onto these copolymer and composite samples through the in situ reduction of Pd²⁺ to the PdNPs. The conditions yielding the highest PdNP content were investigated in detail, and the PdNP formation abilities of both fabrics prepared by different routes were compared. It was observed that the contribution of PdNPs through the P2ATP/WSH composite route was relatively high compared to that of the copolymer route. The structural and morphological alterations in the wool nature, the existence, the oxidation state, and the relative abundance (%) of PdNPs with respect to the Pd²⁺ ions were evidenced by many techniques in detail. After examining the performance of the PdNP composites in the catalytic reduction of two nitroarenes to the aminoarenes, the Pd/P2ATP/WSH demonstrated satisfactorily high performance in terms of reduction yield (%), reduction rate constant (min^–1), and reusability, compared to that of Pd/P2ATP-g-WSH.

中文翻译：

来自可持续资源的易于应用的多相催化剂：将 Pd 纳米颗粒锚定到化学聚（2-氨基苯硫酚）改性的羊毛织物上

为了制备 Pd 纳米颗粒 (PdNP) 修饰的非均相催化剂材料，羊毛织物在通过两个简单的化学过程丰富其化学功能后被用作实用平台。首先，羊毛角蛋白通过提取 -SH 基团用 NaHS 转化为还原结构 (WSH)，然后通过 2-氨基苯硫酚 (2-ATP) 的共价连接重建为 S-S 键。确保 2-ATP 在该 2-ATP/WSH 表面上的接枝共聚，以制备 P2ATP- g -WSH共聚物织物。作为第二个过程，2-ATP 的聚合也在 WSH 织物上进行，以制备 P2ATP/WSH 复合材料。随后通过原位还原 Pd ^{2+确保 PdNP 锚定在这些共聚物和复合材料样品上}到 PdNPs。详细研究了产生最高 PdNP 含量的条件，并比较了通过不同途径制备的两种织物的 PdNP 形成能力。据观察，与共聚物路线相比，PdNPs 通过 P2ATP/WSH 复合路线的贡献相对较高。许多技术详细证明了羊毛性质、存在、氧化态和 PdNPs 相对于 Pd ^{2+离子的相对丰度 (%) 的结构和形态变化。}在检查了 PdNP 复合材料在两种硝基芳烃催化还原为氨基芳烃中的性能后，Pd/P2ATP/WSH 在还原收率 (%)、还原速率常数 (min ^–1) 和可重复使用性，与 Pd/P2ATP- g -WSH 相比。

更新日期：2022-09-07

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