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Comparative study of the effect of TiO2 support composition and Pt loading on the performance of Pt/TiO2 photocatalysts for catalytic photoreforming of cellulose
Lan, Lan1; Daly, Helen1; Jiao, Yilai2; Yan, Yin1,3; Hardacre, Christopher1; Fan, Xiaolei1
Corresponding AuthorHardacre, Christopher(c.hardacre@manchester.ac.uk) ; Fan, Xiaolei(xiaolei.fan@manchester.ac.uk)
2021-09-01
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN0360-3199
Volume46Issue:60Pages:31054-31066
AbstractHerein, catalytic aqueous phase photoreforming of cellulose was carried out over Pt/mTiO(2) (i.e., mixed phase of anatase and rutile) and Pt/anatase catalysts to investigate the effect of the TiO2 support structure and Pt loading on the production of H-2. The effect of the TiO2 support on the properties of the resulting Pt/TiO2 catalysts (such as actual Pt loading and BET surface area) was not significant. At low Pt loading of 0.16 wt.%, the TiO2 supports affected the sub-nanometre Pt structures which was confirmed by the diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) characterisation (using CO as the probe). Conversely, the effect of TiO2 supports on larger Pt particles (on 1 wt.% catalysts) was insignificant possibly due to the reduced effect of restructuration of bigger Pt particles on the TiO2 supports. With an increase in Pt loading from 0.16 wt% to 1.00 wt.%, the normalised H-2 production rate (with respect to the actual supported Pt amount and specific surface area of the catalysts) showed a decreasing trend over the two types of the catalysts, i.e., from 10.6 to 1.4 mmol h(-1) m(-2) mg(Pt)(-1) for Pt/m-TiO2, and from 8.5 to 1.2 mmol h-1 m(-2) mg(Pt)(-1) for Pt/anatase. Specifically, large Pt particle sizes reduced the CO2/H-2 production from cellulose photoreforming over both Pt/m-TiO2 and Pt/anatase catalysts, indicting an important role played by Pt particle size in photoreforming. Interestingly, in this study, the m-TiO2 supported catalysts only showed the benefits of enhanced charge separation across the phase junction in producing H-2 with small Pt particles (at sub-nanometre), whilst, when large Pt particles (at around 1-2 nm) were supported, such a benefit was not significant in cellulose photoreforming. The promoting effect of small, sub-nm particles is attributed to the better capture of photoelectrons from bulk TiO2 and better activity of H+ coupling on small Pt particle. Further fundamental study on such guest-host interactions is devised to optimise Pt/TiO2 catalysts for improving H-2 production from photoreforming reactions. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
KeywordHydrogen (H-2) production Catalytic photoreforming Titanium dioxide (TiO2) Anatase Rutile Cellulose
Funding OrganizationChina Scholarship Council (CSC)-University of Manchester joint studentship ; China Scholarship Council (CSC) ; EPSRC
DOI10.1016/j.ijhydene.2021.06.043
Indexed BySCI
Language英语
Funding ProjectChina Scholarship Council (CSC)-University of Manchester joint studentship[201706950035] ; China Scholarship Council (CSC)[201706155095] ; EPSRC[EP/S000771/1]
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS IDWOS:000687479400005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159273
Collection中国科学院金属研究所
Corresponding AuthorHardacre, Christopher; Fan, Xiaolei
Affiliation1.Univ Manchester, Dept Chem Engn & Analyt Sci, Sch Engn, Manchester M13 9PL, Lancs, England
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China
Recommended Citation
GB/T 7714
Lan, Lan,Daly, Helen,Jiao, Yilai,et al. Comparative study of the effect of TiO2 support composition and Pt loading on the performance of Pt/TiO2 photocatalysts for catalytic photoreforming of cellulose[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2021,46(60):31054-31066.
APA Lan, Lan,Daly, Helen,Jiao, Yilai,Yan, Yin,Hardacre, Christopher,&Fan, Xiaolei.(2021).Comparative study of the effect of TiO2 support composition and Pt loading on the performance of Pt/TiO2 photocatalysts for catalytic photoreforming of cellulose.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,46(60),31054-31066.
MLA Lan, Lan,et al."Comparative study of the effect of TiO2 support composition and Pt loading on the performance of Pt/TiO2 photocatalysts for catalytic photoreforming of cellulose".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46.60(2021):31054-31066.
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