Ferromagnetic nanocrystallines containing copper as an efficient catalyst for photoinduced water oxidation

被引：20

作者：

Du, Xiaoqiang ^{[1
]}

Ding, Yong ^{[1
,2
]}

Xiang, Rui ^{[1
]}

Xiang, Xu ^{[2
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China

[2] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing, Peoples R China

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 16期

基金：

中国国家自然科学基金;

关键词：

VISIBLE-LIGHT-DRIVEN; POLYOXOMETALATE CATALYST; PHOTOSYSTEM-II; COMPLEXES; REDUCTION; LIGAND; IRON; INTERMEDIATE; PRECATALYSTS; PHOSPHATE;

D O I：

10.1039/c5cp00688k

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：

CuFe2O4 nanocrystallines with cubic jacobsite structure have been obtained by heat treatment of the coprecipitation product, which were synthesized by the reaction of Cu2+ ions and Fe3+ ions under alkaline conditions. Reported here is the first copper-based catalyst for photocatalytic water oxidation using [Ru(bpy)(3)]Cl-2 as the photosensitizer and Na2S2O8 as the sacrificial electron acceptor, respectively. An apparent TOF value of 1.2 mmol s(-1) m(-2) and an oxygen yield of 72.8% were obtained with CuFe2O4. The apparent TOF value with CuFe2O4 (1.2 mmol s(-1) m(-2)) is the highest value among all heterogeneous photocatalytic water oxidation systems. CuFe2O4 can be easily separated from reaction solution by magnetic separation while maintaining excellent water oxidation activity in the fourth and fifth runs. The surface conditions of CuFe2O4 are slightly absent after examination by X-ray photoelectron spectroscopy (XPS) before and after the photocatalytic reaction.

引用

页码：10648 / 10655

页数：8

共 47 条

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