生物分子调控Pt/Pd纳米颗粒催化性能研究

刘燕虹; 蒋玉娇; 李国柱

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生物分子调控Pt/Pd纳米颗粒催化性能研究

首发时间：2016-06-27

刘燕虹 ¹
刘燕虹（1991-），女，硕士研究生，主要研究方向：催化加氢
蒋玉娇 ¹ 李国柱 ¹
李国柱（1982-），男，副教授，高能燃料催化加氢

1、天津大学化工学院，天津化学化工协同创新中心，天津 300072

摘要：封端剂在纳米催化剂的制备中起关键作用。通过不同种类和用量的封端剂可以调节催化剂的结构、形貌、尺寸大小及分布，还可以进一步精密调控纳米催化剂的催化性能。自然界中生物分子和材料可在纳米尺度相互作用来导向合成和应用并由此来精密调控无机结构。受此启发，本文设计了仿生调控下的贵金属纳米催化剂体系，研究了不同生物分子调控制备的Pt/Pd纳米颗粒催化剂的构型及其用于催化NaBH4还原对硝基苯酚的性能。实验使用多肽(T7，S7)、牛血清蛋白(BSA)、贻贝仿生多巴胺和聚酰胺(PAMAM)树枝状高分子为封端剂制备了形貌各异的Pt和Pd纳米颗粒，研究了其构型，系统考察了其催化活性。研究结果表明，多肽对Pt/Pd纳米颗粒的催化活性影响较大。不同的多肽肽链对的催化活性有着各异的影响，有的可以提高其催化活性，有的反而会起抑制作用，有的没有明显影响。多肽S7调控制备的Pt纳米颗粒比普通Pt纳米颗粒催化活性提高10倍，而S7调控制备的Pd纳米颗粒相对普通Pd纳米颗粒催化活性提高了近50倍。研究结果表明特定的仿生手段可以精密控制贵金属纳米颗粒的催化性能。

关键词：化学工艺仿生调控多肽贵金属对硝基苯酚催化

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Catalytic performance of Pt/Pd nanoparticles regulated by bioinspired molecules

LIU Yanhong ¹
刘燕虹（1991-），女，硕士研究生，主要研究方向：催化加氢
JIANG Yujiao ¹ LI Guozhu ¹
李国柱（1982-），男，副教授，高能燃料催化加氢

1、School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072

Abstract： Capping agent plays a key role in the preparation of nanocatalysts. Structure, morphology, size and distribution of the catalyst can be regulated by various capping agents. Furthermore, precise control of catalytic performance of nanocatalyst can be realized using this strategy. In nature, biomolecules interact with the growing materials at the nanoscale to direct both the synthesis and application. Inspired by this characteristic, new system of nanocatalysts regulated by biomimetic strategy has been developed. Morphology of Pt/Pd nanocatalysts regulated by different biomolecules has been investigated. Catalytic performance of the as-synthesized nanocatalysts for the reduction of 4-nitrophenol by NaBH4 was also studied. The peptides (T7 and S7), bovine serum albumin (BSA), mussel-inspired dopamine and poly(amidoamine) (PAMAM) dendrimer were used as capping agents for the preparation of Pt/Pd nanoparticles. Then catalytic performance of the obtained nanocatalysts were studied systematically. Great influence of peptides on the catalytic activity of Pt/Pd nanoparticles has been observed. Results showed that various peptides have different effects on their catalytic activity. Both improvement and inhibition of the catalytic activity can be achieved by certain peptides. In addition, some peptides have no obvious influence on the activity. After regulation by peptide S7, catalytic activity of Pt nanoparticles can be effectively increased to 10 times compared with bare Pt nanoparticles. For Pd nanoparticles regulated by S7, the catalytic activity is 50 times of bare Pd nanoparticles. In conclusion, precise control of catalytic activity of noble metal nanocatalysts can be realized by this biomimetic strategy.

Keywords： chemical technology biomimetic regulation peptides Pt/Pd nanoparticles 4-nitrophenol catalytic activity

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刘燕虹，蒋玉娇，李国柱. 生物分子调控Pt/Pd纳米颗粒催化性能研究[EB/OL]. 北京：中国科技论文在线 [2016-06-27]. https://www.paper.edu.cn/releasepaper/content/201606-887.

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论文编号	201606-887
论文题目	生物分子调控Pt/Pd纳米颗粒催化性能研究
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