Photocatalytic hydrogen production using TiO2-Pt aerogels

被引：61

作者：

Puskelova, Jarmila ^{[1
]}

Baia, Lucian ^{[2
,3
]}

Vulpoi, Adriana ^{[2
,3
]}

Baia, Monica ^{[2
,3
]}

Antoniadou, Maria ^{[1
]}

Dracopoulos, Vassilios ^{[4
]}

Stathatos, Elias ^{[5
]}

Gabor, Kovacs ^{[6
]}

Pap, Zsolt ^{[6
]}

Danciu, Virginia ^{[1
,6
]}

Lianos, Panagiotis ^{[1
,4
]}

机构：

[1] Univ Patras, Dept Chem Engn, Patras 26500, Greece

[2] Univ Babes Bolyai, Fac Phys, Cluj Napoca 400084, Romania

[3] Univ Babes Bolyai, Inst Interdisciplinary Res Bionanosci, Cluj Napoca 400271, Romania

[4] FORTH ICE HT, Patras 26504, Greece

[5] Inst Educ Technol, Dept Elect Engn, Patras 26334, Greece

[6] Univ Babes Bolyai, Fac Chem & Chem Engn, Cluj Napoca 400028, Romania

来源：

CHEMICAL ENGINEERING JOURNAL | 2014年 / 242卷

关键词：

TiO2-Pt; Aerogels; Photocatalytic hydrogen production; Ethanol reforming; VISIBLE-LIGHT; METAL NANOPARTICLES; ETHANOL; ALCOHOL; NANOCOMPOSITES; DEGRADATION; OXIDATION; METHANOL; WATER;

D O I：

10.1016/j.cej.2013.12.018

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

TiO2-Pt aerogel composites have been synthesized by mixing sol-gel titania with Pt colloidal suspensions followed by supercritical drying. The highest specific surface achieved with these materials ranged between 550 and 600 m(2) g(-1) before annealing and stayed relatively high, i.e. 162 m(2) g(-1), after calcination. The concentration of Pt nanoparticles ranged between 0.3 and 1.0 wt.% while their size ranged between 5.75 and 6.5 nm. These composites were employed as photocatalysts for room-temperature photocatalytic reforming of ethanol and hydrogen production. The highest hydrogen production rate, 7.2 mmol H-2 h(-1) g(-1), was obtained in the case of the smallest and most concentrated metal nanoparticles underlying the importance of the number of active sites on the TiO2-Pt composites. This rate of hydrogen production is relatively high and reflects the relatively high specific surface of the employed photocatalysts. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：96 / 101

页数：6

共 38 条

[1] Photocatalytic oxidation of ethanol using undoped and Ru-doped titania: Acetaldehyde, hydrogen or electricity generation [J].