g-C3N4/CeO2/Fe3O4 Ternary Composite as an Efficient Bifunctional Catalyst for Overall Water Splitting

被引：59

作者：

Rashid, Jamshaid ^{[1
]}

Parveen, Nadia ^{[1
]}

ul Haq, Tanveer ^{[2
]}

Iqbal, Aneela ^{[3
]}

Talib, Shamraiz Hussain ^{[4
]}

Awan, Saif Ullah ^{[5
]}

Hussain, Naveed ^{[6
]}

Zaheer, Muhammad ^{[2
]}

机构：

[1] Quaid i Azam Univ, Fac Biol Sci, Dept Environm Sci, Islamabad 45320, Pakistan

[2] Lahore Univ Management Sci, SBA Sch Sci & Engn, Dept Chem & Chem Engn, Lahore 54792, Pakistan

[3] Natl Univ Sci & Technol, Sch Civil & Environm Engn, Inst Environm Sci & Engn, Sect H-12, Islamabad 44000, Pakistan

[4] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[5] Natl Univ Sci & Technol, NUST Coll Elect & Mech Engn, Dept Elect Engn, Islamabad 54000, Pakistan

[6] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

CHEMCATCHEM | 2018年 / 10卷 / 24期

关键词：

Bi-functional Catalysts; Graphitic Carbon Nitride; Hydrogen Evolution Reaction; Oxygen Evolution Reaction; Overall Water Splitting; LIGHT-DRIVEN PHOTOCATALYSTS; HYDROGEN EVOLUTION; ELECTROCATALYSTS; OXIDE; NANOPARTICLES; FE3O4; NANOCOMPOSITES; NANOSHEETS; NANOTUBES;

D O I：

10.1002/cctc.201801597

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：

We report the very first example of a catalyst based on a ternary composite of graphitic carbonitride (g-C3N4), ceria (CeO2) and magnetite (Fe3O4) for overall water splitting in 1.0 M KOH. Synergy between the components due to electronic effects results in a highly efficient catalyst which catalyzes Oxygen Evolution Reaction (OER) and Hydrogen Evolution Reaction (HER) at substantially low overpotentials (400 mV and 310 mV respectively) to produce benchmark current density (10 mA cm(-2)). OER activity of the catalysts surpasses that of the benchmark RuO2 catalyst at higher current densities (>= 50 mA cm(-2)). The composite catalyst is stable and shows a Faraday efficiency of 98% for OER. Overall water splitting was achieved at an overpotential of 1.94 V which is substantially high at 1 wt% loading of active metal.

引用

页码：5587 / 5592

页数：6

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[51] Polymer derived non-oxide ceramics modified with late transition metals [J].