Saka, Cafer2024-12-242024-12-2420230360-31991879-3487https://doi.org/10.1016/j.ijhydene.2022.12.212https://hdl.handle.net/20.500.12604/6579Herein, the surface properties of graphitic carbon nitride (GCN) with sulphur(S), boron (B) and oxygen (O) dopants were improved. The heteroatom-doped metal-free GCN exhibited both rich surface functional groups and a carbon defect structure. These metal-free cata-lysts were used to obtain hydrogen (H2) from the sodium borohydride (SB) methanolysis for the first time. Compared to GCN, S, B, and O doped GCN catalyst obtained showed a 2.2-fold improvement in H2 production. HGR value obtained with B, O and S doped GCN (10 mg) via SB of 2.5% was 9166 ml min-1g-1. XPS, SEM-EDX, TEM, FTIR, and XRD analyses were used for the structural properties of catalysts. The activation energy (Ea) for B, O and S doped GCN was 28.89 kJ mol-1.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessCarbon nitrideCarbon vacancyBoron oxygenSulphurHydrogenArticle48351312313138Q1WOS:000969533700001Q12-s2.0-8514636157910.1016/j.ijhydene.2022.12.212