We report the use of palladium nanoparticles (Pd NPs) immobilized on m-aminophenol/formaldehyde resin (APF)-derived porous carbon spheres (Pd@PCS) as heterogeneous catalysts for the reduction of organic dyes. The morphology, structure, surface compositions, and textural properties of PCS and the Pd@PCS catalyst were characterized fully to document the excellent catalytic efficiency of Pd@PCS composites. Pd NPs of mean particle size ca. 12 ± 0.8 nm were highly dispersed on the surface of PCSs, and possessed surface area and pore volume as high as 896.3 m² g⁻¹ and 0.934 cm³ g⁻¹, respectively. Prepared catalysts were applied to the reduction of various organic dyes; high catalytic activity towards crystal violet, eosin yellow and sunset yellow was observed. More importantly, the catalysts could be recovered readily, and reused many times with good stability. Therefore, the robust material utilized for the treatment of containing organic dyes could be used widely for environmental applications.

中文翻译：

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低价钯装饰上米氨基苯酚-甲醛衍生的多孔碳球的增强的催化还原的有机染料的†

我们报道了使用固定在钯纳米颗粒（钯NPS）的米氨基苯酚/甲醛树脂（APF）衍生的多孔碳球（钯@ PCS）作为用于有机染料的还原的非均相催化剂。充分表征了PCS和Pd @ PCS催化剂的形貌，结构，表面组成和质构性质，以证明Pd @ PCS复合材料具有出色的催化效率。平均颗粒尺寸的纳米颗粒的Pd CA。12±0.8 nm高度分散在PCS的表面上，其表面积和孔体积分别高达896.3 m ² g ^-1和0.934 cm ³ g ^-1， 分别。将制得的催化剂用于还原各种有机染料。观察到了对结晶紫，曙红和日落黄的高催化活性。更重要的是，催化剂可以容易地回收，并以良好的稳定性多次使用。因此，用于处理含有机染料的坚固材料可广泛用于环境应用。