Green and active hydrogen production from hydrolysis of ammonia borane by using caffeine carbon quantum dot-supported ruthenium catalyst in methanol solvent by hydrothermal treatment

被引：23

作者：

Izgi, Mehmet Sait ^{[1
]}

Onat, Erhan ^{[2
]}

Sahin, Omer ^{[3
]}

Saka, Cafer ^{[4
]}

机构：

[1] Siirt Univ, Fac Engn & Architecture, Dept Chem Engn, TR-56100 Siirt, Turkiye

[2] Bitlis Eren Univ, Tatvan Vocat Sch, Bitlis, Turkiye

[3] Istanbul Tech Univ, Dept Chem Engn, Istanbul, Turkiye

[4] Siirt Univ, Fac Hlth Sci, TR-56100 Siirt, Turkiye

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 51卷

关键词：

Caffeine carbon quantum dot; Ruthenium; Methanol; Hydrothermal treatment; Hydrogen; FACILE SYNTHESIS; PARTICLE-SIZE; NANOPARTICLES; GENERATION; GRAPHENE; DEHYDROGENATION; NANOTUBE; ALLOY; GOLD;

D O I：

10.1016/j.ijhydene.2023.08.119

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Here, carbon quantum dot (CQD) supported Ru nanoparticles from the caffeine in methanol or water by the hydrothermal method were synthesized for the first time to produce hydrogen (H-2) by hydrolysis of ammonia borane(NH3BH3) and their catalytic activities were investigated. The chemical compositions and morphology structures of this caffeine carbon dot-supported Ru catalysts were carefully characterized by UV, PL, TEM, FTIR, and ICP/OES analyses. Well-dispersed Ru nanoclusters with similar to 1.81 nm particle size on CQD by the hydrothermal method in methanol medium showed very good catalytic performance. The turnover frequency (TOF) obtained for H-2 production from the catalytic hydrolysis of 5% NH3BH3 with CQD supported Ru catalyst obtained by the hydrothermal method in methanol and water was found to be 361 and 1895 mol H-2 min(-1) mol(-1), respectively. The activation energies (Ea) for NH3BH3 hydrolysis with the same catalysts were measured as 33.32 and 27.80 kJmol(-1), respectively.

引用

页码：180 / 192

页数：13

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