Hydrogen production by photocatalytic water splitting using poly(allylamine hydrochloride)/poly(acrylic acid)/TiO2/copper chlorophyllin self-assembled thin films

被引：17
作者：
Vebber, M. C. [1 ]
Faria, A. C. R. [1 ]
Dal'Acqua, N. [1 ]
Beal, L. L. [1 ]
Fetter, G. [2 ]
Machado, G. [3 ]
Giouanela, M. [1 ]
Crespo, J. S. [1 ]
机构：
[1] Univ Caxias do Sul, Ctr Ciencias Exatas & Tecnol, Rua Francisco Getulio Vargas 1130, BR-95070560 Caxias Do Sul, RS, Brazil
[2] Benemerita Univ Autonoma Puebla, Fac Ciencias Quim, Ave San Claudio,Ciudad Univ, Puebla 72570, Pue, Mexico
[3] Ctr Tecnol Estrateg Nordeste, Ave Prof Luiz Freire 01, BR-50740540 Recife, PE, Brazil
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 40期
关键词：
Self-assembled thin films; Weak polyelectrolytes; Titanium oxide; Chlorophyllin; Hydrogen production; Water splitting; H-2; PRODUCTION; TIO2;
D O I：
10.1016/j.ijhydene.2016.07.238
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：
The aim of this study was to fabricate and characterize self-assembled thin films (SATF) obtained by a combination of poly(allylamine hydrochloride), poly(acrylic acid), titanium dioxide (TiO2) nanoparticles and the visible light sensitizer sodium copper chlorophyllin (Cu-chln) using the layer-by-layer technique. SATF with 21, 81 and 161 layers were deposited onto glass substrates and then characterized by means of several techniques, including ultraviolet and visible spectrophotometry, scanning electron microscopy, energy dispersive spectroscopy, profilometry, and inductively coupled plasma optical emission spectrometry. Their photocatalytic activity was evaluated by quantifying the hydrogen production using gas chromatography by placing the SATF in water upon irradiation with a solar simulator. The maximum average hydrogen production rates were 0.16, 0.45 and 1.26 mu mol cm(-2) h(-1) for the SATF with 21, 81 and 161 layers, respectively. Cu-chin was shown to be effective to improve the TiO2 catalytic activity, more than doubling the hydrogen production rate compared to the SATF that were fabricated with only the polyelectrolytes and TiO2. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：17995 / 18004
页数：10
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