Photo-enhanced catalytic hydrogen production from ammonia borane dehydrogenation over cobalt doped n-type semiconductors

被引：11

作者：

Filiz, Bilge Coskuner ^{[1
,3
,4
]}

Figen, Aysel Kanturk ^{[2
,3
]}

机构：

[1] Yildiz Tech Univ, Dept Met & Mat Engn, TR-34220 Istanbul, Turkiye

[2] Yildiz Tech Univ, Dept Chem Engn, TR-34220 Istanbul, Turkiye

[3] Yildiz Tech Univ, Clean Energy Technol Inst, TR-34220 Istanbul, Turkiye

[4] Yildiz Tech Univ, Fac Chem & Met, Dept Met & Mat Engn, TR-34220 Istanbul, Turkiye

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 60期

关键词：

UV-Vis; Photo-catalytic; TiO; 2; Hydrogen; Heterojunction; WO3; PHOTOCATALYTIC HYDROLYSIS; EFFICIENT CATALYSTS; H-2; EVOLUTION; NANOPARTICLES; NANOFIBERS; NANOWIRES; NANORODS; ANATASE;

D O I：

10.1016/j.ijhydene.2022.12.176

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：

Aimed at achieving the photo-enhanced dehydrogenation of ammonia borane (NH3BH3) in aqueous solutions, p-type cobalt (Co) doped n-type semiconductors (TiO2, WO3 and TiO2WO3) based heterojunction structures were proposed for hydrogen production. In the present study, the Co doped n-type semiconductors such as titanium dioxide (TiO2) and tungsten oxide (WO3) were synthesized by hydrothermal synthesis to obtain heterojunction structure and characterized by XRD, SEM/EDS, TEM, FT-IR and UV-Vis techniques. The photo-enhanced catalytic hydrogen production from NH3BH3 dehydrogenation over Co doped n-type semiconductors were tested under light-irradiation (UV-light and day-light) in presence of organic and inorganic scavengers. The experimental results showed that Co @TiO2-WO3 heterojunction structure improved hydrogen production almost three times in terms of TOF values (821 h-1) compared to Co@TiO2 (292 h-1) due to photoelectrons and hole pairs increases activity. The pseudo first order kinetics based on LangmuirHinshelwood (L-H) kinetic model fitting revealed that apparent adsorption constant

引用

页码：22954 / 22966

页数：13

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