Biogas can be an energy carrier and on-site conversion of biogas into syngas provides an alternative to reduce its utilization cost and to increase its energy density since CO₂ can be converted into combustible contents. In this study, perovskite-type photocatalyst LaFeO₃ (LFO) and Ag-LaFeO₃/TiO₂ (ALFTO) are prepared and combined with a spark discharge reactor to conduct biogas reforming. Next, to reduce the influence of H₂S on reforming system, another photocatalyst BaTa_0.7Nb_0.3O₃ (BTaNO) is added to form plasma Z-scheme photocatalysis system. Results indicate that packing ALFTO enhances syngas generation rate to 20.2 mol/kW h but the existence of H₂S leads to deactivation of photocatalyst and restriction on discharge. Further introduction of BTaNO increases the stable discharge time of the reactor. Photocatalyst characterizations further indicate that there are interactions between plasma and photocatalyst to induce synergistic effects and Z-scheme photocatalysis is beneficial to alleviate the impact of H₂S on biogas reforming.

沼气可以作为能量载体，由于将CO ₂转化为可燃物，因此可以将沼气现场转化为合成气，从而降低其利用成本并提高其能量密度。在这项研究中，钙钛矿型光催化剂LaFeO ₃（LFO）和Ag-LaFeO ₃ / TiO ₂（ALFTO）制备并与火花放电反应器结合进行沼气重整。接下来，为减少H ₂ S对重整系统的影响，另一种光催化剂BaTa _0.7 Nb _0.3 O ₃添加（BTaNO）以形成等离子体Z方案光催化系统。结果表明，填充ALFTO可以将合成气的产生速率提高到20.2 mol / kW h，但是H ₂ S的存在会导致光催化剂失活并限制放电。进一步引入BTaNO会增加反应器的稳定放电时间。光催化剂的表征进一步表明，血浆和光催化剂之间存在相互作用，以产生协同效应，Z方案光催化有利于减轻H ₂ S对沼气重整的影响。