In this study, nitrogen (N) doped metal-free catalysts were obtained as a result of nitric acid (HNO₃) activation of carbon sample (C–KOH–N), which was obtained based on Chlorella Vulgaris microalgae by KOH activation (C–KOH). These catalysts have been effectively used to produce hydrogen (H₂) from the sodium borohydride (NaBH₄) methanolysis reaction. Compared to the C–KOH catalyst, the catalytic activity for C–KOH–N showed a seven-fold improvement. Hydrogen generation rate (HGR) values obtained for the NaBH₄ methanolysis reaction for C–KOH and C–KOH–N metal-free catalysts were 3250 and 20,100 mL min⁻¹ g⁻¹. The catalysts were characterized using various analytical techniques such as XPS, XRD, SEM, FTIR, BET, and elemental analysis. This work can provide a new alternative strategy to produce specific heteroatom-doped metal-free carbon catalysts for environmentally friendly conversion to produce H₂ efficiently.

在这项研究中，氮（N）掺杂的不含金属的催化剂，获得硝酸（HNO的结果₃）活化的碳样品（C-KOH-N），其基于所获得的小球藻KOH活化微藻（C –KOH）。这些催化剂已有效地用于从硼氢化钠 (NaBH ₄ ) 甲醇分解反应生产氢气 (H ₂ ) 。与 C-KOH 催化剂相比，C-KOH-N 的催化活性提高了七倍。对于 C-KOH 和 C-KOH-N 无金属催化剂的 NaBH ₄甲醇分解反应获得的氢生成速率 (HGR) 值为3250 和 20,100 mL min ^-1  g ^-1. 使用各种分析技术对催化剂进行表征，例如 XPS、XRD、SEM、FTIR、BET 和元素分析。这项工作可以提供一种新的替代策略，以生产特定的杂原子掺杂的无金属碳催化剂，实现环保转化以高效生产H ₂。