Metal chalcogenide based photocatalysts decorated with heteroatom doped reduced graphene oxide for photocatalytic and photoelectrochemical hydrogen production

被引：33

作者：

Akyuz, Duygu ^{[1
]}

Ayaz, Rana Muhammad Zunain ^{[2
]}

Yilmaz, Seda ^{[2
]}

Uguz, Ozlem ^{[2
]}

Sarioglu, Cevat ^{[3
]}

Karaca, Fatma ^{[2
]}

Ozkaya, Ali Riza ^{[1
]}

Koca, Atif ^{[2
]}

机构：

[1] Marmara Univ, Fac Sci & Letters, Dept Chem, TR-34722 Istanbul, Turkey

[2] Marmara Univ, Dept Chem Engn, Fac Engn, TR-34722 Istanbul, Turkey

[3] Marmara Univ, Dept Met & Mat Engn, Fac Engn, TR-34722 Istanbul, Turkey

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 34期

关键词：

Photocatalyst; Hydrogen production; Reduced graphene oxide; Heteroatom; Photocatalytic hydrogen production; Photoelectrochemical hydrogen production; EVOLUTION REACTION; CARBON NITRIDE; COMPOSITES; SPECTROMETRY; G-C3N4; SIZE;

D O I：

10.1016/j.ijhydene.2019.04.049

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：

Heteroatom (N, B and P) doped reduced graphene oxide (RGO)-metal chalcogenide nanocomposites (RGO-Cd0.60Zn0.40S) were prepared by the solvothermal method, and then they were characterized with X-ray diffraction, Raman spectroscopy, transmission electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, UV-Vis diffuse reflectance spectroscopy and photoluminescence techniques. Doping of RGO with heteroatoms of N, B and P increased charge-transfer capability of nanocomposites and thus, improved both photocatalytic and photoelectrochemical hydrogen production activities of them. N-doped RGO-Cd0.60Zn0.40S photocatalyst exhibited the highest photocatalytic hydrogen production rate (1114 mu molh(-1) g(-1)) in photocatalytic (PC) system amongst other and it was 1.5 times higher than that of RGO-Cd0.60Zn0.40S photocatalyst. Having a current density of 0.92 mAcm(-2), photoelectrochemical hydrogen production activity of N-RGO-Cd0.60Zn0.40S electrode was found to be 3 times higher than RGO-Cd0.60Zn0.40S photoelectrode without any applied bias potential under visible light irradiation in photoelectrochemical system. In general, these results clearly showed that heteroatom doping of RGO led to promising materials for renewable hydrogen production in the photocatalytic and photoelectrochemical systems. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：18836 / 18847

页数：12

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