Abstract The synthesis of colloidal platinum nanoparticles (PtNPs) (dcore≈1-40 nm) in an aqueous solution was carried out using amido(dimethyl)amino- and carboxy- calix[4]resorcinarenes with alkyl substituents on the lower rim as stabilizer. The nanoparticles were characterized by spectrophotometry, IR, TEM, DLS, PXRD and SAXS. It was shown that PtNPs and gold nanoparticles (AuNPs) obtained, stabilized by calix[4]resorcinarenes, demonstrate the photocatalytic activity in the photodegradation of methyl orange and rhodamine B toxic dyes under visible light irradiation. The rate constants of catalytic reaction (K1, min−1) and activity of nanocatalysts (K2, min−1 mol−1) were calculated. It was found that size of metal core, structure of macrocycle stabilizing the surface of metal nanoparticles, its ability to form self-associates and bind dye molecules define the rate of dye photodegradation reaction. The study of the interaction of PtNPs and AuNPs capped with amidoamine macrocycles with organic photolinkers by spectrophotometry and fluorescence showed the binding of photolinkers by macrocycles, PtNPs and AuNPs. The photocatalytic activity of obtained cooperative nanoassociates was studied. The addition of photolinkers leads to both an increase and a decrease in the reaction rate, depending on the structure of linker and macrocycle. An increase in the reaction rate occurs due to the formation of photoactive supramolecular nanoassociates and the additional photosensitizing action of the photolinker on the surface of a metal nanoparticle. Such hybrid nanocatalysts based on metal nanoparticle and calixresorcinarenes have the potential to be used in the field of effective photodegradation of toxic water pollutants.

中文翻译：

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基于金和铂纳米粒子的超分子纳米缔合物对有机染料的光催化性能，由两亲杯[4]间苯二酚封端

摘要 在水溶液中合成胶体铂纳米粒子 (PtNPs) (dcore≈1-40 nm) 使用酰胺（二甲基）氨基-和羧基-杯[4] 间苯二酚作为稳定剂，在下缘具有烷基取代基。通过分光光度法、IR、TEM、DLS、PXRD 和 SAXS 对纳米颗粒进行表征。结果表明，获得的 PtNPs 和金纳米粒子 (AuNPs)，由杯 [4] 间苯二酚稳定，证明了在可见光照射下光降解甲基橙和罗丹明 B 有毒染料的光催化活性。计算了催化反应的速率常数（K1，min-1）和纳米催化剂的活性（K2，min-1 mol-1）。发现金属核的大小、大环结构稳定了金属纳米粒子的表面，其形成自缔合和结合染料分子的能力决定了染料光降解反应的速率。通过分光光度法和荧光对 PtNPs 和 AuNPs 与酰胺胺大环化合物与有机光连接剂的相互作用的研究表明，大环化合物、PtNPs 和 AuNPs 结合了光连接剂。研究了所得协同纳米缔合物的光催化活性。根据接头和大环的结构，添加光接头会导致反应速率的增加和降低。由于光活性超分子纳米缔合物的形成和金属纳米颗粒表面上光连接剂的额外光敏作用，反应速率发生增加。