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<p>Electroless deposition (ELD) via spontaneous redox reactions between metal precursors and carbon substrates provides a sustainable and surfactant-free approach to supported metal nanoparticles (NPs). However, it is often limited by the weak reducing ability and cost of conventional carbons. Herein, we report a biomass-derived carbon (BC) prepared from microcrystalline cellulose (MC) as a low-cost carbon matrix that acts as both the reducing agent and the stabilizer for ELD of noble metals. Nitrogen (N)-doped biomass carbon (NBC) further improves deposition control, enabling tunable Pd loading, particle size, and dispersion with nitrogen content. Pd/NBC 5 shows an about threefold higher activity for 4-nitrophenol (4-NP) reduction than commercial Pd/C under identical conditions, mainly due to uniform Pd dispersion and nitrogen-enabled interfacial effects. Using the same procedure, NBC 5 also enables ELD of Au, Pt, and Ru with good dispersion, demonstrating the generality of this nitrogen-tunable biomass carbon. This work provides insights into how nitrogen tuning in biomass carbons regulates ELD behavior and offers a mild, aqueous, reductant-free strategy to construct carbon-supported noble metal nanocatalysts for chemical and environmental catalysis.</p> Graphical abstract <p></p>

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Sustainable electroless deposition of noble metal nanoparticles on biomass-derived carbon for high-performance catalysis

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • Jiru Jia,
  • Yusheng Tang,
  • Jing Jin,
  • Xiaofei Wang,
  • Jin Zhao,
  • Jun Peng,
  • Baishun Chen

摘要

Electroless deposition (ELD) via spontaneous redox reactions between metal precursors and carbon substrates provides a sustainable and surfactant-free approach to supported metal nanoparticles (NPs). However, it is often limited by the weak reducing ability and cost of conventional carbons. Herein, we report a biomass-derived carbon (BC) prepared from microcrystalline cellulose (MC) as a low-cost carbon matrix that acts as both the reducing agent and the stabilizer for ELD of noble metals. Nitrogen (N)-doped biomass carbon (NBC) further improves deposition control, enabling tunable Pd loading, particle size, and dispersion with nitrogen content. Pd/NBC 5 shows an about threefold higher activity for 4-nitrophenol (4-NP) reduction than commercial Pd/C under identical conditions, mainly due to uniform Pd dispersion and nitrogen-enabled interfacial effects. Using the same procedure, NBC 5 also enables ELD of Au, Pt, and Ru with good dispersion, demonstrating the generality of this nitrogen-tunable biomass carbon. This work provides insights into how nitrogen tuning in biomass carbons regulates ELD behavior and offers a mild, aqueous, reductant-free strategy to construct carbon-supported noble metal nanocatalysts for chemical and environmental catalysis.

Graphical abstract