The porous biomass carbons (PBCs) as catalyst supports were synthesized by simple hydrothermal and carbonization method, and the surface property of PBCs were designed by plasma treatment technology. The Pd and Ce loaded TPBCs (PBCs were treated with plasma) supports were evaluated for their catalytic activity in the CO oxidation reaction. The Pd–Ce/TPBCs-20 catalyst (Conditions: CO concentration: 1 vol%, Total flow rate: 50 mL min⁻¹, Moisture: 4 vol%) exhibited the highest catalytic activity, and the complete conversion temperature (T₁₀₀) was about 20 °C for CO catalytic oxidation. Moreover, the Pd–Ce/TPBCs-20 catalyst behaved an excellent stability with the CO conversion rate in the presence of moisture, remaining higher than 90% after 24 h on stream at 20 °C. Raman, XPS, H₂-TPR and O₂-TPD analysis revealed that the surface oxygen-containing functional groups and defect concentration will increase with increasing plasma treatment time, which could improved Pd and Ce diffusion and Pd–O–Ce bonding interactions, resulting in increased CO catalytic activity. In addition, chitosan as the raw material for the synthesis of PBCs support, is low-cost and easy to be obtained from nature. Therefore, the Pd–Ce/TPBCs catalysts have great potential for catalytic removal of CO in practical application.

通过简单的水热碳化法合成了多孔生物质碳（PBCs）作为催化剂载体，并通过等离子体处理技术设计了其表面性质。评估了负载Pd和Ce的TPBC（用血浆处理过的PBC）载体在CO氧化反应中的催化活性。Pd–Ce / TPBCs-20催化剂（条件：CO浓度：1 vol％，总流速：50 mL min ^-1，水分：4 vol％）表现出最高的催化活性，并且完全转化温度为（T ₁₀₀）对于CO催化氧化为约20℃。此外，Pd-Ce / TPBCs-20催化剂在存在水分的情况下表现出出色的稳定性，在CO转化率方面，在20°C下运转24小时后仍保持高于90％。拉曼，XPS，H₂ -TPR和O ₂ -TPD分析表明，随着处理时间的延长，表面含氧官能团和缺陷浓度将增加，这可以改善Pd和Ce的扩散以及Pd–O–Ce的键合相互作用，从而导致CO催化作用的增加。活动。另外，壳聚糖作为合成PBCs载体的原料，成本低廉，易于从自然界中获得。因此，Pd-Ce / TPBCs催化剂在实际应用中具有巨大的催化去除CO的潜力。