MxCo(3-x)O(4) (M = Co, Mn, Fe) porous nanocages derived from metal-organic frameworks as efficient water oxidation catalysts | |
Wei, Jie1; Feng, Yingying1; Liu, Yan1; Ding Y(丁勇)1,2 | |
刊名 | Journal of Materials Chemistry A
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2015 | |
卷号 | 3期号:44页码:22300-22310 |
ISSN号 | 2050-7488 |
通讯作者 | 丁勇 |
英文摘要 | The design and development of efficient and robust water oxidation catalysts based on earth-abundant elements are crucial for energy conversion and storage technology. Herein, we report Co3O4 porous nanocages derived from simple metal–organic frameworks by a simple self-assembly method and a low temperature annealing process. This method can synthesize MxCo3−xO4 (M = Co, Mn, Fe) porous nanocage materials and allow precise control of the ratio of substituted metal in Co3O4 catalysts. These catalysts were investigated for photochemical, chemical-driven (cerium(IV)-driven) and electrochemical water oxidation, and they presented a superior activity for water oxidation. A high turnover frequency (TOF) of ∼3.2 × 10−4 s−1 per Co atom was obtained under neutral pH using Co3O4 porous nanocages in the photocatalytic water oxidation reaction, which is comparable with those of nanostructured Co3O4 clusters supported on mesoporous silica. Under cerium(IV)-driven water oxidation conditions, a high TOF of ∼3.6 × 10−3 s−1 per Co atom was achieved, which was the highest among those of other known reported cobalt oxides. The overpotential of Co3O4 porous nanocages for the electrochemical water oxidation (η = 0.42 V at 1 mA cm−2) is comparable to the reported overpotentials of catalysts based on cobalt. Multiple experimental results (e.g. XRD, TEM, HR-TEM and XPS) confirm that Co3O4 porous nanocages are highly stable. This study illustrates a guideline for the design and synthesis of inexpensive and highly active spinel catalysts for water oxidation. |
学科主题 | 物理化学与绿色催化 |
收录类别 | SCI |
资助信息 | the national Natural science Foundation of China (Grant Nos 21173105;21172098) |
语种 | 英语 |
WOS记录号 | WOS:000364080400042 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/19068] ![]() |
专题 | 兰州化学物理研究所_OSSO国家重点实验室 |
作者单位 | 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.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Wei, Jie,Feng, Yingying,Liu, Yan,et al. MxCo(3-x)O(4) (M = Co, Mn, Fe) porous nanocages derived from metal-organic frameworks as efficient water oxidation catalysts[J]. Journal of Materials Chemistry A,2015,3(44):22300-22310. |
APA | Wei, Jie,Feng, Yingying,Liu, Yan,&Ding Y.(2015).MxCo(3-x)O(4) (M = Co, Mn, Fe) porous nanocages derived from metal-organic frameworks as efficient water oxidation catalysts.Journal of Materials Chemistry A,3(44),22300-22310. |
MLA | Wei, Jie,et al."MxCo(3-x)O(4) (M = Co, Mn, Fe) porous nanocages derived from metal-organic frameworks as efficient water oxidation catalysts".Journal of Materials Chemistry A 3.44(2015):22300-22310. |
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