Comparative study of the effect of TiO2 support composition and Pt loading on the performance of Pt/TiO2 photocatalysts for catalytic photoreforming of cellulose

doi:10.1016/j.ijhydene.2021.06.043

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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, Lan 1; Daly, Helen 1; Jiao, Yilai 2; Yan, Yin 1,3; Hardacre, Christopher 1; Fan, Xiaolei 1
刊名	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
	2021-09-01
卷号	46 期号:60 页码:31054-31066
关键词	Hydrogen (H-2) production Catalytic photoreforming Titanium dioxide (TiO2) Anatase Rutile Cellulose
ISSN号	0360-3199
DOI	10.1016/j.ijhydene.2021.06.043
通讯作者	Hardacre, Christopher(c.hardacre@manchester.ac.uk) ; Fan, Xiaolei(xiaolei.fan@manchester.ac.uk)
英文摘要	Herein, 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.
资助项目	China Scholarship Council (CSC)-University of Manchester joint studentship[201706950035] ; China Scholarship Council (CSC)[201706155095] ; EPSRC[EP/S000771/1]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000687479400005
资助机构	China Scholarship Council (CSC)-University of Manchester joint studentship ; China Scholarship Council (CSC) ; EPSRC
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/159272]
专题	金属研究所_中国科学院金属研究所
通讯作者	Hardacre, Christopher; Fan, Xiaolei
作者单位	1.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
推荐引用方式 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.