N与F共掺杂空心碳球用于电催化合成H_(2)O_(2)的试验研究

Experimental Study on N and F Codoped Hollow Carbon Spheres for Electrocatalytic Synthesis of H_(2)O_(2)

双电子(2e^(-))氧还原反应(ORR)可用于电催化合成H_(2)O_(2),它是一种绿色技术,可连续合成H_(2)O_(2),但开发具有高活性和高选择性的催化剂仍然是一项重大挑战。试验通过碳球(CS)和氟化铵(NH_(4)F)的碳化来制备杂原子双掺杂多孔空心碳催化剂(FNCS),不仅实现N和F的双重掺杂,还使碳球具有空腔结构。结果表明,FNCS显示出卓越的双电子氧还原反应性能,在0.3~0.5 V的宽电位范围内,H_(2)O_(2)选择性高达60%,它在H_(2)O_(2)合成领域有很大的应用潜力。

The dual electron(2e^(-))oxygen reduction reaction(ORR)can be used for electrocatalytic synthesis of H_(2)O_(2),which is a green technology that can continuously synthesize H_(2)O_(2),however,developing catalysts with high activity and selectivity remains a major challenge.The experiment prepares a heteroatom doped porous hollow carbon catalyst(FNCS)by carbonizing carbon spheres(CS)and ammonium fluoride(NH_(4)F),which not only achieves dual doping of N and F,but also makes the carbon spheres have a cavity structure.The results indicate that FNCS exhibits excellent dual electron oxygen reduction reaction performance,with a wide potential range of 0.3~0.5 V and a selectivity of up to 60%for H_(2)O_(2),it has great potential for application in the field of H_(2)O_(2)synthesis.