Journal
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
Volume 36, Issue 2, Pages 209-214Publisher
WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-021-2396-8
Keywords
V-doped CeO2; alkali-activated-steel-slag-based catalyst; photocatalysis; water splitting; hydrogen production
Categories
Funding
- National Natural Science Foundation of China [51372197]
- Basic Research Plan of Natural Science of Shaanxi Province [2020JQ-754]
- Key Innovation Team of Shaanxi Province [2014KCT-04]
- Special Project of Shaanxi Province [19JK0490]
- Construction and Promotion of High-level Achievements in Material Science and Engineering Discipline of Xi'an University of Science and Technology [2040519061]
- Xi'an University of Science and Technology Doctoral Start-up Project [2018QDJ011]
- [6000190120]
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A novel V-doped CeO2-supported alkali-activated-steel-slag-based catalyst (V-CeO2/AC) exhibits high photocatalytic activity for hydrogen production from water decomposition, attributed to the interaction between V-doped CeO2 active components and FeO in the catalyst carrier. The mechanism of photocatalytic water decomposition over the V-8CeO2/AC catalyst was proposed.
A novel V-doped CeO2-supported alkali-activated-steel-slag-based catalyst (V-CeO2/AC) for photocatalytic decomposition of water to hydrogen was prepared via co-impregnation method. The chemical composition, mineral phase, morphology, and optical performances of the synthesized catalyst samples were characterized by XRF, XRD, SEM, UV-Vis DRS, and so on. XRD and SEM results show that calcium silicate hydrate (Ca1.5SiO3.5 center dot xH(2)O) mineral phase is formed in the carrier sample, and the prepared catalyst specimens are made up of approximately 50 nm particles. After 6 hours of xenon lamp irradiation, the catalyst supported on V-doped 8wt% CeO2 exhibits the highest photocatalytic hydrogen production activity (8 292 mu mol/g), which is attributed to the interaction between the V-doped CeO2 active components and FeO existed in catalyst carrier. A possible photocatalytic decomposition of water for hydrogen production mechanism over the V-8CeO(2)/AC catalyst was proposed.
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