A low-cost and high-efficient catalyst (denoted as CuAg/BC) was fabricated by immobilizing Cu-Ag bimetal on green and renewable biomass carbon nanospheres derived from sucrose for the first time. The prepared CuAg/BC catalyst exhibited high catalytic activity and stability toward the dehydrogenation of formaldehyde at 30 °C. The rate of H₂ generation can reach 306.7 mL min⁻¹ g _catalys⁻¹, which is among the highest values reported so far. The superior catalytic performance is derived from that the synergistic effect between Cu and Ag nanoparticles, and the relatively small size of CuAg nanoparticles greatly increased the utilization efficiency of the metals.

通过首次将Cu-Ag双金属固定在衍生自蔗糖的绿色和可再生生物质碳纳米球上，制备了低成本高效催化剂（称为CuAg / BC）。制备的CuAg / BC催化剂在30℃下表现出高的催化活性和对甲醛脱氢的稳定性。H ₂生成速率可以达到306.7 mL min ^-1  g_催化剂^-1，这是迄今为止报道的最高值之​​一。优异的催化性能源于铜和银纳米颗粒之间的协同作用，并且相对较小的CuAg纳米颗粒尺寸大大提高了金属的利用效率。