As an environment-conscious catalyst, a nanocomposite of Pt nanoparticles supported by dendrimer and cellulose nanofiber was designed. The poly(amido amine) dendrimer was immobilized, by the amidation reaction, on the 2,2,6,6-tetramethyl-1-piperdinyloxy free radical oxidized cellulose nanofiber (TOCNF), and its binding ratios at different mixing ratios were colorimetrically analyzed. The results showed that the dendrimer bound on TOCNF caused a saturation, while polyethyleneimines (PEIs) almost linearly increased the binding mass ratio per TOCNF as the mixing ratio rose. The dendrimer/TOCNF formed a viscoelastic gel in wide mixing ratios, while the PEIs/TOCNF varied their gel characters depending on molecular weight of PEI and mixing ratio. The Pt nanoparticle-incorporated dendrimer (DENPtNPs) was chemically bound on TOCNF. The TOCNF/DENPtNPs gels were dried to form solid films, and then applied for the decomposition of formaldehyde in gas phase. It was demonstrated that the dendrimer effectively captured formaldehyde and the PtNPs decomposed it. These results would be useful to develop catalytic nanocomposite membranes.

作为一种环保催化剂，设计了由树枝状大分子和纤维素纳米纤维支撑的Pt纳米颗粒的纳米复合材料。通过酰胺化反应将聚（酰胺胺）树状大分子固定在2,2,6,6-四甲基-1-哌啶基氧基自由基氧化纤维素纳米纤维（TOCNF）上，并比色分析了其在不同混合比下的结合率。 。结果表明，随着混合比的增加，结合在TOCNF上的树枝状聚合物引起饱和，而聚乙烯亚胺（PEI）几乎线性增加了每个TOCNF的结合质量比。树枝状聚合物/ TOCNF以宽混合比形成粘弹性凝胶，而PEI / TOCNF根据PEI的分子量和混合比改变其凝胶特性。掺有Pt纳米颗粒的树状聚合物（DENPtNPs）化学键合在TOCNF上。将TOCNF / DENPtNPs凝胶干燥以形成固体膜，然后将其用于气相中的甲醛分解。结果表明，树枝状聚合物有效地捕获了甲醛，PtNPs分解了甲醛。这些结果对于开发催化纳米复合膜将是有用的。